Super helpful. Anyone else think the Maintenance Mode process feels like a video game cheat code? Thought my Prius was going to start floating or something
I probably will have to do this soon. But I would like to personally tell you, I appreciate you. I have saved money and learned about my car in the process. Thank you kind sir - you have helped a woman not get scammed by these dealers!
NOT great. He did not mention the bleeding valve under the cowl panel that is required by the factory manual. And these 3rd gen cars are prone to engine overheat.
@@AnnaA-fq8ywas I understand it, they found that the bleed valve was unnecessary with the pressurized system, so Toyota eliminated it during the Gen 3 run.
i'm going thru changing the water pump and thermostat now. if someone doesn't want to remember all those steps for maintenance mode you can just place an item on the accelerator pedal and the car will start and stay running. if you want or need to get to 2500-2700 rpm you can place an item heavy enough to get the pedal to get to those rpm's. bleeding air out of this car was more of a challenge then i thought it would be. had to compress the inlet hose(at the t/stat) many times to prime the pump. good video. thanks.
Thank you for the video, it helped me so much to do the coolant change and to do the whole process again when I had to replace the water pump. Maybe next time you can add the video about that too, even though is actually not bad to do. Only 2 hours tops.
Using a trim removal tool, gently wiggle out the plastic pins that hold the splash shield so you don’t break them. Reinstall them in same location. Have spare plastic pins ready. You want that shield just like it came from the factory.
thank you, we appreciate that :) You can also check out PriusChat forum as well, they are pretty helpful in questions in case you have any problems with your vehicle. :)
@@mattgreen4611 I think the coolant runs through the heater core whether you have the heater on or off. It's like a little radiator inside the duct work or heat and air assembly.
@@NutzAboutBolts the fans started kicking on and off so I guess it worked. I have hot air, but what's strange is I'm use to seeing a lot more movement in the water when it kicks on. Also weirdly enough I had it at exactly full and now it's like an inch over full..? That's a first as well
If you turn your heater on "full blast" the gasoline engine will keep running until the engine warms up and cooling fans energize and the heating t-stat opens up. I don't think there's any need for the elaborate "maintenance mode" ordeal.
We were filming the inverter coolant drain and refill video as well, so that’s why the undercarriage panel was off. But yes, you don’t need to remove the panel since there is a hole for the radiator peck cock from the buttom.
I have a great question for you. I have a 2014 toyota prius v and I have low heat after driving for 10-15 mins. I changed the thermostat and that only made a slight difference. I make sure my coolant level is to the top. Maybe is obvious but I do have a bad head gasket that doesn't mix with oil just burn coolant and the heat was working even with that issue present. I put the car into maintenance mode and left the car on reving to 2000 rpm for about 40 mins with the tank cap off and the heat on high and the car never gets hot even in full speed and max temp. I also squeeze the lines awhile it was on with the tank cap off. I changed the cap and still no heat. When the cooling fans kick in the hoses from the thermostat is hot and I measure the temperature of the two heater core hoses and they were the same temp 102c. I also flush the heater core before this and made no difference. After all of this is it possible there is still air in the cooling system? Is it may be that three way coolant valve that is causing the issue even tho I don't have the p0 code for it?
So to summarize when you want heat the car isn't blowing hot air? Does your car still blow cold air when you have the AC on? If yes then most likely the heater core is clogged up and if a flush didn't work it the core will need to be replaced. If the cold air isn't working either most likely the blower motor is out. A heater issue has nothing to do with the head gasket and the obd 2 system so you'll never get a code for it not working.
@@MrTmenzo Just a update in the matter. The AC system in the car isn't usable since the ac compressor was causing a high voltage leak which will turn on a hybrid code light so i just disconnected the compressor from the car, its still there and the lines but no com with the compressor since i disconnected from the wiring harness. It blows cold air when i have the heat on and after 20 minutes of driving it would get Luke warm but not warm. I found out that if leave the car in maintenance mode for 20 minutes than i get good heat. Don't worry i am not driving it with maintenance mode on because that will ruin the transaxle but if I wanted to take a nap that's what i did since i know i am not going to be driving it. Both the heater hoses are hot and i did flush it but honesty I don't think that its clogged since i eventually got great heat after being left in maintenance mode for a long time. Before that i replaced the thermostat twice and both times i found it closed which is the way it supposed to be because if I found it open that would be the cause of my problem. Most of the time having head gasket issues wouldn't effect the heat on cars but i found for some reason if you have a head gasket issue on a prius it will allow a lot of air to be mixed with the coolant so you would never get the heat you want. By leaving the car in maintenance mode or driving the car nonstop for 70 or more miles without a break any air that gets in the coolant would bleed out because of the temperature of the coolant would be so hot and the engine will stay on which would mean that the hoses and all will cause any repeated air coming in will just bleed out. I still have the prius now but i already have a 2000 lincoln continental with 105k in good shape so i am just waiting until i have the money for the registration and take it to a shop to get the inspection done. It's been a good run with the prius, i got it at 320,000 miles from a mechanic that my dad was great friends with but both him and my dad died of co-vid 19 not so long after. Right now it have 372,000 + with it misfiring from here to there and burning crazy amounts of oil even after replacing the pcv valve. I just put a heavier oil for more protection and that it last longer and i get a big hit on the mpg for that but for me it's better for the car to run with 21 mpg rather than having to check it everyday for oil and having 50 mpg but one day i forgot to check and the engine throws a rod. Thanks for trying to help out but unfortunately having a head gasket issue is a death sentence for the heat. After i tried everything i came to the conclusion and many people on the prius forums have come to that conclusion after all the crazy things they have tried to get their heat to work.
was it cool before? This doesnt affect the AC if that’s what you’re thinking. If your AC isn’t cooling, I’d check if the freon is low or leak in your AC system line.
First I want to thank you for this awesome video. My 2010 wouldn't pick up. Then I found your video. Now my car picks up, runs in the maintenance mode but for a few seconds and then shut back off. Please what else can I try? Thanks in advance.
At what temperature does the thermostat open? Shouldn't there be a noticeable drop in coolant level when it does? I'm bleeding mine after replacing my water pump and refilling coolant and temps got up to 215 Fahrenheit without any drop in coolant level.
Yes, but it still needs to be changed to remove the salt build up from old coolant. The longer you go without a change the faster the coolant boils off and leaves behind even more salts
The fans kick on when the coolant temperature reaches 95°C, so if you have an OBD app or some other means of checking the temperature, you can watch your progress instead of just waiting.
@@bearsneaglesentertainment3901 what would cause it to get up to like 215 in maintenance mode while doing this process. It kept climbing up higher so I shut it off, but I’ve got new pump and thermostat no leaks fans came on just didn’t help to drop the temp
It would be cool if you said why you did each process (maintenance mode, turn hybrid off,run heater) for us noobs ,also is it bad to just top off the coolant? Why is this overall process even necessary?
I could flush the engine coolant of my Gen III Prius (2013) without opening any panel at all. First I memorized the position of yellow knob of valve which was visible from top . Then there was a rectangular hole (aprx 6" x 3") in the sheet metal at bottom where I could put my arm and my hand could reach the valve at the estimated position (reach of others may depend upon the thickness/girth of their arm). With some effort I could open the valve by hand and most of drained coolant came out through another smaller hole in the sheet metal, though not very cleanly. Around 1% of coolant splashed and came out from a couple of other holes. In retrospect, I wish I would have drained slowly and had additional pans ready which may have reduced the mess. After draining I could close back the valve from the same hole at bottom.
Yep same here (2014 Gen3 Prius) @ 155K (first one I think - liquid looks good). If you ONLY have to drain the engine coolant (the inverter was replaced by Toyota so they changed that coolant), you don't need to remove the panel. Easy rolled on ramp, to reach in there and turn (if really slow it drips straight down, if faster it will splatter and will come out 2 holes further back in the cover as well. I cut a gallon milk jug to collect those secondary drips. used dr.prius app to put into maintenance mode and torque app rev to 2500rmp and heat coolant (89c stated boiling in overflow, no fan though). I used Zerex Asian pink for toyota. Same organic coolant at $11/g vs 33 at dealer a long drive away. easy peazy...
just like the engine one it has a limited life and could get dirty and is exposed to heat as well...looking at maintenance log p50 it shows [] replace engine/inverter coolant at 100k / 10y BUT inverter is 150k - with this side note: 3) Initial engine coolant replacement at 100,000 miles/120 months. Replace every 50,000 miles/60 months thereafter. Initial inverter coolant replacement at 150,000 miles/180 months. Replace every 50,000 miles/60 months thereafter. Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for more information.
Good info! Thanks. My 3rd gen Prius has no heat.🙁 coolant level is about 1/4” below the low marker. Car had been driven about an hour earlier. What to do?🤔
If anybody is watching this video just know this process is incorrect! You will be fine if you stick with the same coolant more than likely, but just realize since he didn't drain the cylinder block drain cock plug most of the coolant is still in! Don't accidentally mix it if you're trying to swap colors! Coolant capacity is about 5 more quarts than he was able to get out just draining the radiator and leaving the coolant in the engine!
@@stn7172 pull a line on the exhaust heat exchange and let it drain. For filling you use the burp port near the dash.Just open it though. You fill up to the burp line on the coolant tank.
@paladain55 to clarify I have to fill the coolant reservoir up to the burp fill line in order to open up the burp port? I am having issues with filling my coolant system up.
@@JuanPablo-kt4uh Easiest method is to drain the coolant line going to the exhaust portion and the radiator. When it finishes, fill from the bleed port on the top of the engine near the firewall, and finish up with the coolant resevoir. Theres a hump in the system at the engine block so one side will drain and one wont. Hope tht makes sense.
Why maintenance mode? The engine runs with the hybrid system on? Seems fun to control the computer with such an obscure button pedal mix! Thanks I will definitely plan to do this myself, slowly and carefully!
Maintenance mode bypasses the hybrid system. It’ll let you run the engine only so that the engine gets up to the proper temp for the thermostat to open up to finish bleeding the system from air bubbles.
I used an Airlift tool when I refilled the coolant. It eliminates the hassle of the bleeding process and speeds things up considerably. The third generation Prius has a very extensive cooling system. Air bubbles are real concern. I also squeezed the radiator hoses (from the bottom of radiator, to remove air bubbles) after the thermostat opened in the engine.
+farmerinchico you know, the funny thing is, it didn't take long for the engine to heat up and bleed all the air out of the system. It was much faster than my Honda Accord when I bleed it. We covered up the plastic under panel too early so we used the over flow hose by the coolant reservoir to check if it's hot enough, and sure enough, it was hot and a couple minutes later, the radiator fan kicked on. I think people make these hybrid vehicle maintenance out to be harder than it is, when it's really that easy.
My 2014 prius almost at 120,000, and I'm planning to replace the water pump on the enging. Should I replace the thormostat as well? Have you ever had to replace them on your car?
Thanks for this great video. I followed all the steps except keeping the engine running in maintenance mode until fan comes up. It was fine in city driving but after like 10k kilometers I had to travel on highway, where while driving on constant high speed of like 110km/h for like a minute or so temperature warning light came up, and now it comes up on highways on above or higher speeds and the light goes off when I remove my foot from the pedal. I got the coolant from a Toyota dealership in town but he gave me Toyota pre diluted long life coolant, it was in red color not pink like yours and made in Thailand. My question is wether the above problem is because of (a) faulty coolant; (b) not removing possible air (though I did run my engine on maintenance mood but not long enough for fan to come up), or (c) my water pump not in perfect shape (and how to check water pump's performance).
Its possible that you didn't bleed the air in the system. I would recommend redoing the procedure, and use the 50/50 pink coolant. The red coolant is a different additive for older Toyota vehicles. You need the 50/50 pink coolant and redo this procedure and make sure to wait for the radiator fan to come on. Good luck.
@@NutzAboutBolts that's what I thought, but watching your video, unless I missed something, it looks like you are only draining and filling the reservoir on the left side, which I assume is the inverter coolant. Can you give me a time stamp in the video where you drained and filled the engine coolant side? Looking at a schematic, the invertor coolant reservoir is the same as the power control unit reservoir.
@@TerryUniGeezerPetersonwe have 2 videos for the coolant drain and refill, this video is for the engine side, our other video is for the inverter coolant. If you’re looking at the engine, the left coolant reservoir is for the engine, the right coolant reservoir by the brake fluid reservoir is the inverter coolant. Hope that clears this confusion.
hi nice video thanks for help I m having issue with hot air it's not coming out of vent and it's engine getting hot as well from the time I have changed radiotor looks like air blocked what should I do
Thank you for the video. I took engine radiator out, but do not what screws/clips go where. Do you have any video or a diagram you can refer me to on the internet. Thanks !
Hi after water pump changed screen show me maintenance mode . What’s the mean it is ? Is it dangereus or ? Pls unterstand I’m female driver . Help me pls
Confused why you don’t flush the system and you just drain and refill? I followed your video and my new coolant instantly started to turn dark like my old coolant I drained. I even poured distilled water in until all the dark coolant came out before adding the new coolant.
ANY HELP IS APPRECIATED! Can't figure out why I have no hot air. Changed blown head gasket, changed water pump and thermostat, and still no heat. Bread the system for 45 min to get no bubbles in a raised funnel. If I wait for 30 min, the cabin heat warms up to hot, but as soon as I hit the A/C on button, it starts blowing cold air again. (Room temp).
Hello, great video! I have a question regarding the water pump, how many miles can you recommend to replace it? I have 170k miles I know it’s easy job but some people saids that if you get the light alert maybe it’s to late! Thanks in advance
mines is still running at 392K, but I did replace my first pump around 28k something was wrong with the oem water pump. I did replaced it with another OEM pump. I was looking at this video, on how to bleed the coolant, since I just cleaned out the EGR and EGR cooler. How ever my fan is not turning on, might need to run it till 20min.
These videos are fantastic..thank you so much! I am in a bit of a jam as I forgot the sequence and drained the fluid before removing the fill plug on a Gen3 Prius. The fill plug is now 100% stripped, rounded out even though I was using a 10mm allen plug...not sure how this could have happened. Anyway,, it is stripped and interested if you or anyone here encountered the same and, if so, how it was fixed? I am close to drilling out the plug however concerned of accidental damage to the threads and/or metal shavings inside the transmission case (and think even compressed air might not work given there is wet fluid liner inside.
@@NutzAboutBolts The top fill plug for transmission, for this video. The plug that is tucked behind the axel w/very little room to work. The 10mm allen socket plug went from looking like a square to now looking like a circle. Tried vice-grips on the outside, no luck and that chewed up the outside a bit....the plug continues to degrade.
Think there might be one shot left to create a dent (did this earlier w/effort of knocking it loose.) To confirm, 'in reverse' you are saying hammer the same direction to unscrew (counter clockwise?) No risk to damaging threads? As backup, is there any other way to fill the transmission (with a close measurement on volume?)
Hi, I took my car to the dealer to have the radiator coolant replace and I don't know if they knew how to put the car on maintenance mode anyways after that my car over heats going over 45 MPH I think they didn't bleed out the air by putting the car on maintenance mode and that could be making it over heat. what do you guys think?
Hi, Thanks for the nice video. I have 2014 Prius V (3,30,000 KM). It keeps on blowing cold air in the morning when it is cold outside even after the coolant temp is 85C. Also electric water pump stays at 6375 rpm. However if I restart the engine then pump runs at 2975 rpm and it blows hot air with no problem afterwards. Recently I got the error code P148F (Engine coolant pump over revolution) which I cleared. I have already replaced the thermostat but I think the old one was also good. Please advice if I need to replace the water pump? I appreciate your help. Thank you!
There’s a Facebook group called Prius Nation, I think someone was asking something similar to coolant, you can join and ask them. they should be able to help you with your answer
Thanks for sharing. Did it exactly following your procedures but in the last step to put the engine in service mode did not see much coolant going down the funnel. The fan just won't come on since it's freezing code today when I did it. Any thoughts on if I need to do anything else to bleed air out? Thanks!
+Yi Ni like we said in the video, when you're in maintenance mode, you're not suppose to be driving since all of the system is off or disable. Just run the engine until the radiator fan comes on. Check the overflow hose that goes to the reservoir until its hot as well. Eventually your radiator fan will come on, you can notice that our coolant starts bubbling because the system is hot and a couple minutes later, the fan will come on.
exactly where is the drain had a hard time seeing it is it on the driver side or passenger side or dead center does the whole plastic need to come completely off
So my coolant was bubbling up for 20 minutes or more and then when it slow down just a little bit I turned on the heater to let all the air out and it was still bubbling up a little bit and I close the cap while the coolant was still hot and turned off the vehicle am I going to be OK?
Hello! Thanks for the video. I have a prius 05 and change my first time coolant system. After done, I noticed a water flowing from the passenger cabin I don't know why. Could you please explain to me how to fix it? I really appreciate from your time.
I don't understand what "bleeding the system" means if you just ran your car with a radiator cap off... is that called bleeding the system? Couldn't you just run you car after putting coolant in, and let it "bleed the system" on its own? Of is it bleeding only if the cap is off? Trying to see if I have air in the system, or a bad thermostat/water pump. All my hoses on the bottom are cold, and and there is no heat I the car.
You need to put the car in maintenance mode so it’ll bypass the hybrid system and have the engine running only, then you can start bleeding the air in the system by running the engine until the engine radiator fan turns on. That’s when the thermostat opens and the bottom radiator hose is hot. If you have a bad water pump, youll get a check engine light. As for the thermostat, you’ll have to remove it and check if it still jiggles or not.
@@NutzAboutBolts I did get a check engine light for a bad pump. Then I reset the light, and while testing, the light never came back on. When I pulled the pump, it was completely seized.
@@NutzAboutBolts ya, I replaced it. Car runs perfect now. No overheating. I should mention I replaced the thermostat also. But the problem was def the seized pump.
Is there any difference between bleeding in maintenance mode vrs just letting it run with the heater on ?aside from wasted time when the engine kicks off?
If you don’t run it in maintenance mode, your engine won’t be on, it’ll be the hybrid system on. If you run in maintenance mode, the engine will be running the whole time so it’ll circulate the coolant throughout the engine and warm it up.
Hey guys, I put a bottle of the K&W stop leak in the reservoir to fix most likely a leaky head gasket.. (burns maybe a couple cups of coolant every 10,000mi or so) ..And like 3days later I just got the "check hybrid system" limp mode thing while driving.. I also basically lost all heat in the car after I put that bottle in.. I noticed the car was also overheating when it went into limp mode... so did I clog up the system? I've always heard that was a possibility with that kinda stuff, but this is the 1st time its ever happened.. Can I flush it/high pressure it out? I was gonna drain it tomorrow and pump a bunch of water through the reservoir or that top hose.., hoping to clear out as much as that stuff as possible..,? or does it not work like that? It also looks like the Inverter has its own reservoir and drain plug as well.. Can I 'flush' that like a radiator? Does it matter which line I use? Are they dangers to pumping water through the system? I'm obviously going to fill it with the factory coolant when I'm done, but any advice would be appreciated..
@@nastytaco420 Not well.. I flushed it a bunch.. the system would randomly unclog itself a for a few moments, but it eventually stayed clogged.. Since its like a 9hr repair job for the heater core, and the transmission was having problems too, I decided to just buy a new car. Got the awd corolla hybrid. Sold the prius for $2k to a back yard mechanic. No clue if he fixed it or not.
@@beeziebeats3634 we add the coolant to max and ran the vehicle in maintenance mode. That usually sucks the coolant into the cooling system and we just top it off till the fan kicks in. Did you do that?
@@NutzAboutBolts the coolant was at the full line and nothing was happening until the fan kicked on then I saw bubbles and the coolant level slowly was rising and would overflow then Go back down and then over flow again.
30-40 min is a long time. I overfilled the coolant and will drive it around and watch for low levels. Let it cool and refill as needed....Coolant should go through a pressurized system okay (with air in the coolant).
@@rohitbhatnagar7599 yeah we rarely do it while idling, we rev to 1500rpm and leave it there, or you can just go on a drive and watch for coolant level and hearing your fan come on
Cylinder(s) misfiring. Do you have a check engine light? If so, go to your local auto parts store and ask for them to put on a code reader (if you don't own one).
@@troybonner91 the driving noise is a loud knocking when im driving at a lower speed. Imagine a lawnmower, that's how it is. Toyota told me its the engine
@@dessalinesx5091 I assume you came here because your losing coolant and if your engine is knocking as well, most likely have a leaking headgasket. About 1100 cost of job.
Maintenance mode: power button twice, gas fully twice, brake once (hold), neutral, twice gas, park, twice more gas pedal
How to turn off this mode ?
@@Doinformowany Turn engine off with start button and it will revert back to normal
Nice cheat code
up, up, down, down, left, right, left, right, B, A and Start
Will this give my engine infinite lives or any special powers?
Super helpful.
Anyone else think the Maintenance Mode process feels like a video game cheat code?
Thought my Prius was going to start floating or something
🤣🤣 up up down down left right left right A, B, Start
I probably will have to do this soon. But I would like to personally tell you, I appreciate you. I have saved money and learned about my car in the process. Thank you kind sir - you have helped a woman not get scammed by these dealers!
No problem! Glad the videos were helpful and helped saved you lots of $$$ 🙂
Great video and instructions for engine coolant and inverter coolant replacement. Based on dealer quote, this saved me $550.
I was about to take it to them i will do it myself 😂
NOT great. He did not mention the bleeding valve under the cowl panel that is required by the factory manual. And these 3rd gen cars are prone to engine overheat.
U5aa5,д5дгчTY k KY just uju😂@@alexisrodriguez2966
@@AnnaA-fq8ywas I understand it, they found that the bleed valve was unnecessary with the pressurized system, so Toyota eliminated it during the Gen 3 run.
This channel is such a hidden gem! 💎 Thank you for sharing your expertise in such a beginner-friendly way!
Thanks for helping me diagnose this. I’m headed Valvoline but I didn’t know where to turn before. Thanks.
Man that was way easy to change out the fluid. Great Video sir, keep it up.
Thanks!
i'm going thru changing the water pump and thermostat now. if someone doesn't want to remember all those steps for maintenance mode you can just place an item on the accelerator pedal and the car will start and stay running. if you want or need to get to 2500-2700 rpm you can place an item heavy enough to get the pedal to get to those rpm's. bleeding air out of this car was more of a challenge then i thought it would be. had to compress the inlet hose(at the t/stat) many times to prime the pump. good video. thanks.
How do I bleed the air out? I can't get the coolant system to fill? Is my t/stat not opening? Or am I not doing something right?
Thank you for the video, it helped me so much to do the coolant change and to do the whole process again when I had to replace the water pump. Maybe next time you can add the video about that too, even though is actually not bad to do. Only 2 hours tops.
for sure when ours go bad, its electric water pump, so it shouldn't go out on you...
Using a trim removal tool, gently wiggle out the plastic pins that hold the splash shield so you don’t break them. Reinstall them in same location. Have spare plastic pins ready. You want that shield just like it came from the factory.
There's a vent valve on the heater return pipe on the transmission side of the engine,open that to get the air out quicker
It’s only on 2010-2011 models
thx man. I just bought a hybrid prius and didn't know how to work these new cars. thx for the help and I'll share this with everyone I know
thank you, we appreciate that :) You can also check out PriusChat forum as well, they are pretty helpful in questions in case you have any problems with your vehicle. :)
thx will do
You put the cap back on before running the heater? Wouldn't that keep more air bubbles from coming out?
My thoughts exactly
@@mattgreen4611 I think the coolant runs through the heater core whether you have the heater on or off. It's like a little radiator inside the duct work or heat and air assembly.
Man, you and this video are pure life savers. This is exactly what I needed. Thank you very much. New subscriber
Glad it helped 👍🏼
@@NutzAboutBolts how long does it take for the fan to come on. it's around 50 degrees outside where I am
@@Juss-Saiyan if you idle it, it’s usually longer than 30 mins. If you keep it at 2k rpm, it’ll probably turn on between 15 mins to 25mins.
@@NutzAboutBolts the fans started kicking on and off so I guess it worked. I have hot air, but what's strange is I'm use to seeing a lot more movement in the water when it kicks on. Also weirdly enough I had it at exactly full and now it's like an inch over full..? That's a first as well
If you turn your heater on "full blast" the gasoline engine will keep running until the engine warms up and cooling fans energize and the heating t-stat opens up. I don't think there's any need for the elaborate "maintenance mode" ordeal.
you can also get dr.prius mobile app and use the free tool to go into service mode.
That's I'm thinking
There are access holes for both the drain nozzle and the tap. No need to take anything off underneath.
We were filming the inverter coolant drain and refill video as well, so that’s why the undercarriage panel was off. But yes, you don’t need to remove the panel since there is a hole for the radiator peck cock from the buttom.
Thank you for your video i use this videos for change the spark plugs, transmission oil and the water pump and coolant
Put a piece of vinyl tubing on the radiator drain petcock, and run it into a jug/container. No splashing!
I now know the cheat code to my car. Thank you.
Great video. Broke down to step by step.
Is this supposed to be done at 100k miles?
Per Toyota yes
Does it have coolant level sensor?i forget to hook overflow line and was driving a week without warning
I have a great question for you. I have a 2014 toyota prius v and I have low heat after driving for 10-15 mins. I changed the thermostat and that only made a slight difference. I make sure my coolant level is to the top. Maybe is obvious but I do have a bad head gasket that doesn't mix with oil just burn coolant and the heat was working even with that issue present. I put the car into maintenance mode and left the car on reving to 2000 rpm for about 40 mins with the tank cap off and the heat on high and the car never gets hot even in full speed and max temp. I also squeeze the lines awhile it was on with the tank cap off. I changed the cap and still no heat. When the cooling fans kick in the hoses from the thermostat is hot and I measure the temperature of the two heater core hoses and they were the same temp 102c. I also flush the heater core before this and made no difference. After all of this is it possible there is still air in the cooling system? Is it may be that three way coolant valve that is causing the issue even tho I don't have the p0 code for it?
So to summarize when you want heat the car isn't blowing hot air? Does your car still blow cold air when you have the AC on? If yes then most likely the heater core is clogged up and if a flush didn't work it the core will need to be replaced. If the cold air isn't working either most likely the blower motor is out. A heater issue has nothing to do with the head gasket and the obd 2 system so you'll never get a code for it not working.
@@MrTmenzo Just a update in the matter. The AC system in the car isn't usable since the ac compressor was causing a high voltage leak which will turn on a hybrid code light so i just disconnected the compressor from the car, its still there and the lines but no com with the compressor since i disconnected from the wiring harness. It blows cold air when i have the heat on and after 20 minutes of driving it would get Luke warm but not warm. I found out that if leave the car in maintenance mode for 20 minutes than i get good heat. Don't worry i am not driving it with maintenance mode on because that will ruin the transaxle but if I wanted to take a nap that's what i did since i know i am not going to be driving it. Both the heater hoses are hot and i did flush it but honesty I don't think that its clogged since i eventually got great heat after being left in maintenance mode for a long time. Before that i replaced the thermostat twice and both times i found it closed which is the way it supposed to be because if I found it open that would be the cause of my problem. Most of the time having head gasket issues wouldn't effect the heat on cars but i found for some reason if you have a head gasket issue on a prius it will allow a lot of air to be mixed with the coolant so you would never get the heat you want. By leaving the car in maintenance mode or driving the car nonstop for 70 or more miles without a break any air that gets in the coolant would bleed out because of the temperature of the coolant would be so hot and the engine will stay on which would mean that the hoses and all will cause any repeated air coming in will just bleed out. I still have the prius now but i already have a 2000 lincoln continental with 105k in good shape so i am just waiting until i have the money for the registration and take it to a shop to get the inspection done. It's been a good run with the prius, i got it at 320,000 miles from a mechanic that my dad was great friends with but both him and my dad died of co-vid 19 not so long after. Right now it have 372,000 + with it misfiring from here to there and burning crazy amounts of oil even after replacing the pcv valve. I just put a heavier oil for more protection and that it last longer and i get a big hit on the mpg for that but for me it's better for the car to run with 21 mpg rather than having to check it everyday for oil and having 50 mpg but one day i forgot to check and the engine throws a rod. Thanks for trying to help out but unfortunately having a head gasket issue is a death sentence for the heat. After i tried everything i came to the conclusion and many people on the prius forums have come to that conclusion after all the crazy things they have tried to get their heat to work.
Thanks I did as you said but my ac is not cooling any idea what happened.?
was it cool before? This doesnt affect the AC if that’s what you’re thinking. If your AC isn’t cooling, I’d check if the freon is low or leak in your AC system line.
30 minutes and my coolant read at 203 F and fan still did not come on 😢. Any advice? It’s about 60F outside
Update?
Also, how do you know collant temp?
How about air bleeding the system?
First I want to thank you for this awesome video. My 2010 wouldn't pick up. Then I found your video. Now my car picks up, runs in the maintenance mode but for a few seconds and then shut back off. Please what else can I try? Thanks in advance.
At what temperature does the thermostat open? Shouldn't there be a noticeable drop in coolant level when it does? I'm bleeding mine after replacing my water pump and refilling coolant and temps got up to 215 Fahrenheit without any drop in coolant level.
Did you also replace the thermostat?
How did you fix the issue?
what if it's low? can you simply add more coolant?
Yes, but it still needs to be changed to remove the salt build up from old coolant. The longer you go without a change the faster the coolant boils off and leaves behind even more salts
Hi, how long does it take until the cooling fans turn on during maintenance mode?
45 mins of you leave it idle, but if you rev it up like we do to about 2-3k rpm, then it takes around 15-20 mins.
@@NutzAboutBolts 3
The fans kick on when the coolant temperature reaches 95°C, so if you have an OBD app or some other means of checking the temperature, you can watch your progress instead of just waiting.
@@bearsneaglesentertainment3901 what would cause it to get up to like 215 in maintenance mode while doing this process. It kept climbing up higher so I shut it off, but I’ve got new pump and thermostat no leaks fans came on just didn’t help to drop the temp
@mattbrooks9928 did you find a fix?
how does it good to inspection mode do I wait
I find that just run the heat on HI will make the engine run. you can also hit the gas. that fluid looked new. LOL
Looks can be deceiving on coolant. You can use a test strip on it to see if it is still good
I tried to do the maintenance mode, but instead it unlocked beast mode and now my Prius has 800hp! 😳
🤣😂🤣
😂😂😂😂😂
Thank you for this video. It really helped!
It would be cool if you said why you did each process (maintenance mode, turn hybrid off,run heater) for us noobs ,also is it bad to just top off the coolant? Why is this overall process even necessary?
I could flush the engine coolant of my Gen III Prius (2013) without opening any panel at all. First I memorized the position of yellow knob of valve which was visible from top . Then there was a rectangular hole (aprx 6" x 3") in the sheet metal at bottom where I could put my arm and my hand could reach the valve at the estimated position (reach of others may depend upon the thickness/girth of their arm). With some effort I could open the valve by hand and most of drained coolant came out through another smaller hole in the sheet metal, though not very cleanly. Around 1% of coolant splashed and came out from a couple of other holes. In retrospect, I wish I would have drained slowly and had additional pans ready which may have reduced the mess. After draining I could close back the valve from the same hole at bottom.
Yep same here (2014 Gen3 Prius) @ 155K (first one I think - liquid looks good). If you ONLY have to drain the engine coolant (the inverter was replaced by Toyota so they changed that coolant), you don't need to remove the panel. Easy rolled on ramp, to reach in there and turn (if really slow it drips straight down, if faster it will splatter and will come out 2 holes further back in the cover as well. I cut a gallon milk jug to collect those secondary drips. used dr.prius app to put into maintenance mode and torque app rev to 2500rmp and heat coolant (89c stated boiling in overflow, no fan though).
I used Zerex Asian pink for toyota. Same organic coolant at $11/g vs 33 at dealer a long drive away. easy peazy...
@@alaind831 I have same 2014 Prius. We have to change inverter coolant???
just like the engine one it has a limited life and could get dirty and is exposed to heat as well...looking at maintenance log p50 it shows [] replace engine/inverter coolant at 100k / 10y BUT inverter is 150k - with this side note:
3) Initial engine coolant replacement at 100,000 miles/120 months. Replace every 50,000 miles/60 months thereafter.
Initial inverter coolant replacement at 150,000 miles/180 months. Replace every 50,000 miles/60 months thereafter.
Refer to “Engine/Inverter Coolant” in the “Explanation of Maintenance Items” section in the back of this guide for
more information.
@@alaind831 what guide sir?
@@terrytorres7075 "maintenance log page 50" as stated above
Good info! Thanks. My 3rd gen Prius has no heat.🙁 coolant level is about 1/4” below the low marker. Car had been driven about an hour earlier. What to do?🤔
Did you follow the procedure? Why’s it below the low mark?
How do u remove it from maintenance mood?
Turn off the engine. That simple.
@@psadhi thats great. But how do you get it into maintenance mode prior to draining coolant?
How much coolant should I buy if I'm going to do the inverter and the engine at the same time?
2 gallons.
Thanks!
If anybody is watching this video just know this process is incorrect! You will be fine if you stick with the same coolant more than likely, but just realize since he didn't drain the cylinder block drain cock plug most of the coolant is still in! Don't accidentally mix it if you're trying to swap colors! Coolant capacity is about 5 more quarts than he was able to get out just draining the radiator and leaving the coolant in the engine!
How do you flush the engine
@@stn7172 pull a line on the exhaust heat exchange and let it drain. For filling you use the burp port near the dash.Just open it though. You fill up to the burp line on the coolant tank.
Makes sense why I did this and my new coolant instantly turned dark like the old stuff I drained
@paladain55 to clarify I have to fill the coolant reservoir up to the burp fill line in order to open up the burp port? I am having issues with filling my coolant system up.
@@JuanPablo-kt4uh Easiest method is to drain the coolant line going to the exhaust portion and the radiator. When it finishes, fill from the bleed port on the top of the engine near the firewall, and finish up with the coolant resevoir. Theres a hump in the system at the engine block so one side will drain and one wont. Hope tht makes sense.
Can you write the steps on bringing the car in the maintenance mode please and how to bring it back to hybrid mode before driving it. Thanks
Romeo maloco any response?
YES I did put out there how do you get into maintennae mode? I know how to get out of it by simply shutting the engine off.
Why maintenance mode? The engine runs with the hybrid system on? Seems fun to control the computer with such an obscure button pedal mix! Thanks I will definitely plan to do this myself, slowly and carefully!
Maintenance mode bypasses the hybrid system. It’ll let you run the engine only so that the engine gets up to the proper temp for the thermostat to open up to finish bleeding the system from air bubbles.
You mentioned maintenance mode and inspection mode
If you cant bleed it out would it be bad just to fill it up
I mean, it’s not too bad but overtime the coolant won’t be affective in protecting the engine from the heat due to the coolant being diluted.
@@NutzAboutBolts sweet thamks for the info
I used an Airlift tool when I refilled the coolant. It eliminates the hassle of the bleeding process and speeds things up considerably. The third generation Prius has a very extensive cooling system. Air bubbles are real concern. I also squeezed the radiator hoses (from the bottom of radiator, to remove air bubbles) after the thermostat opened in the engine.
+farmerinchico you know, the funny thing is, it didn't take long for the engine to heat up and bleed all the air out of the system. It was much faster than my Honda Accord when I bleed it. We covered up the plastic under panel too early so we used the over flow hose by the coolant reservoir to check if it's hot enough, and sure enough, it was hot and a couple minutes later, the radiator fan kicked on. I think people make these hybrid vehicle maintenance out to be harder than it is, when it's really that easy.
+NutzAboutBolts It's all those noises a Prius makes as it just sitting in the garage: )
+farmerinchico I know what you mean lol!! Darn Prius noise.
+NutzAboutBolts
you didn't flush the system
21boxhead
that's why its called a drain and refill...
was not easy to drive it for few minutes till the sensor opens and stop and refill until your coolant level has stop? good video.
My 2014 prius almost at 120,000, and I'm planning to replace the water pump on the enging. Should I replace the thormostat as well? Have you ever had to replace them on your car?
How do i know i need to drain it or just top it off?
Top off won’t clear out the old fluids… draining will do that.
Thanks for this great video.
I followed all the steps except keeping the engine running in maintenance mode until fan comes up.
It was fine in city driving but after like 10k kilometers I had to travel on highway, where while driving on constant high speed of like 110km/h for like a minute or so temperature warning light came up, and now it comes up on highways on above or higher speeds and the light goes off when I remove my foot from the pedal.
I got the coolant from a Toyota dealership in town but he gave me Toyota pre diluted long life coolant, it was in red color not pink like yours and made in Thailand.
My question is wether the above problem is because of (a) faulty coolant; (b) not removing possible air (though I did run my engine on maintenance mood but not long enough for fan to come up), or (c) my water pump not in perfect shape (and how to check water pump's performance).
Its possible that you didn't bleed the air in the system. I would recommend redoing the procedure, and use the 50/50 pink coolant. The red coolant is a different additive for older Toyota vehicles. You need the 50/50 pink coolant and redo this procedure and make sure to wait for the radiator fan to come on. Good luck.
@@NutzAboutBolts x
Haseeb Ahmed did you find out what it was
Did you figure out what was wrong with it? I'm having similar issues, thanks!
What's up Haseeb...??? Did you ever get to the bottom of this ???
So the 2011 Prius only has the inverter coolant?
@@TerryUniGeezerPeterson all Prius should have the inverter coolant, that’s the hybrid coolant
@@NutzAboutBolts what meant was, does the gen 3 have *two* separate reservoirs: one for engine coolant and another for convertor coolant?
@@TerryUniGeezerPetersonyes, they all should have separate cooling system since ones for the engine and ones for the hybrid side.
@@NutzAboutBolts that's what I thought, but watching your video, unless I missed something, it looks like you are only draining and filling the reservoir on the left side, which I assume is the inverter coolant. Can you give me a time stamp in the video where you drained and filled the engine coolant side? Looking at a schematic, the invertor coolant reservoir is the same as the power control unit reservoir.
@@TerryUniGeezerPetersonwe have 2 videos for the coolant drain and refill, this video is for the engine side, our other video is for the inverter coolant. If you’re looking at the engine, the left coolant reservoir is for the engine, the right coolant reservoir by the brake fluid reservoir is the inverter coolant. Hope that clears this confusion.
I have a 2015 Prius and it looks like there is a 2nd coolant reservoir on the drivers side. It’s pink in color as well. What is that!?
It is for the converter only, not the engine, although it takes the same type of antifreeze
hi nice video thanks for help I m having issue with hot air it's not coming out of vent and it's engine getting hot as well from the time I have changed radiotor looks like air blocked what should I do
whats the history of the vehicle? suddenly it just doesn't blow hot air?
khurram manzoor shahid might be thermostat.
great videos man. quick and easy and great quality!
+Jesse Ramirez thanks!
Thank you for the video. I took engine radiator out, but do not what screws/clips go where. Do you have any video or a diagram you can refer me to on the internet. Thanks !
Hi after water pump changed screen show me maintenance mode . What’s the mean it is ? Is it dangereus or ? Pls unterstand I’m female driver . Help me pls
Could i use a hand pump to suck out the coolant from reservoir so i dont have to take off the under pumper?
Let gravity do the job, it’s easier, and hand pump won’t suck everything out of the engine block...
Confused why you don’t flush the system and you just drain and refill? I followed your video and my new coolant instantly started to turn dark like my old coolant I drained. I even poured distilled water in until all the dark coolant came out before adding the new coolant.
ANY HELP IS APPRECIATED!
Can't figure out why I have no hot air. Changed blown head gasket, changed water pump and thermostat, and still no heat. Bread the system for 45 min to get no bubbles in a raised funnel. If I wait for 30 min, the cabin heat warms up to hot, but as soon as I hit the A/C on button, it starts blowing cold air again. (Room temp).
If you turn on the a/c, it’s not going to blow hot air, it’ll blow cold air
@@NutzAboutBolts that's not how it works. A/C should blow hot air if the temp is set to max. I have 2 prius, and the other one works fine.
what are your thoughts on vacuum filling coolant method❔
Never tried it… how long is the process?
Thank you for the helpful video!
You’re welcome
How much coolant did you use?
can I add the coolant but drain the old coolant ? thanks
Yes
The link for the antifreeze is no good. Please update it.
thanks! I just update it.
Does the inverter coolant and engine coolant use the same fluid?
yes.
so during the entire process of heating the engine your a/c was on on
No, temp was high, a/c off
Hello, great video! I have a question regarding the water pump, how many miles can you recommend to replace it? I have 170k miles
I know it’s easy job but some people saids that if you get the light alert maybe it’s to late!
Thanks in advance
Mines still running at 240k miles. I’d change it when it alerts me lol
mines is still running at 392K, but I did replace my first pump around 28k something was wrong with the oem water pump. I did replaced it with another OEM pump. I was looking at this video, on how to bleed the coolant, since I just cleaned out the EGR and EGR cooler. How ever my fan is not turning on, might need to run it till 20min.
Excellent video. The explanation was very good !!
These videos are fantastic..thank you so much!
I am in a bit of a jam as I forgot the sequence and drained the fluid before removing the fill plug on a Gen3 Prius. The fill plug is now 100% stripped, rounded out even though I was using a 10mm allen plug...not sure how this could have happened. Anyway,, it is stripped and interested if you or anyone here encountered the same and, if so, how it was fixed? I am close to drilling out the plug however concerned of accidental damage to the threads and/or metal shavings inside the transmission case (and think even compressed air might not work given there is wet fluid liner inside.
Which fill plugs stripped? For the transmission?
@@NutzAboutBolts The top fill plug for transmission, for this video. The plug that is tucked behind the axel w/very little room to work. The 10mm allen socket plug went from looking like a square to now looking like a circle. Tried vice-grips on the outside, no luck and that chewed up the outside a bit....the plug continues to degrade.
@@PixelRogue3 try using a flat head screw driver or something sharp to create a dent, and use a hammer and hammer the bolt in reverse to twist it out.
Think there might be one shot left to create a dent (did this earlier w/effort of knocking it loose.) To confirm, 'in reverse' you are saying hammer the same direction to unscrew (counter clockwise?) No risk to damaging threads?
As backup, is there any other way to fill the transmission (with a close measurement on volume?)
UPDATE: Used a chisel to create an indentation, then screw driver and once it had a grip it spun out as if it were brand new! Happy days. Thank you!
For a Prius Hybrid, you did not also drain the inverter, which should have a drain plug under the car?
We did another video for it
Absolutely what I needed, thanks 🙏
How does the air in your heater core bleed out if you already put the pressure cap on?
The radiator fan turned on, there’s no air in the system.
i just bought a 2010 prius second gen. with 106k should i change the cooling? previous owner told me they never did.
Yes change it
Hi, I took my car to the dealer to have the radiator coolant replace and I don't know if they knew how to put the car on maintenance mode anyways after that my car over heats going over 45 MPH I think they didn't bleed out the air by putting the car on maintenance mode and that could be making it over heat. what do you guys think?
I’d take it back to the dealership and complain about the issues to them…
Do I turn the heater on while the maintenance mood is active
Yes, when the radiator fan turns on.
@@NutzAboutBolts thanks man
Hi, Thanks for the nice video. I have 2014 Prius V (3,30,000 KM). It keeps on blowing cold air in the morning when it is cold outside even after the coolant temp is 85C. Also electric water pump stays at 6375 rpm. However if I restart the engine then pump runs at 2975 rpm and it blows hot air with no problem afterwards. Recently I got the error code P148F (Engine coolant pump over revolution) which I cleared. I have already replaced the thermostat but I think the old one was also good. Please advice if I need to replace the water pump? I appreciate your help. Thank you!
There’s a Facebook group called Prius Nation, I think someone was asking something similar to coolant, you can join and ask them. they should be able to help you with your answer
Engine and inverter coolant are same?
Yes, they use the same coolant type
@@NutzAboutBolts Thank you!
Is radiator cleaner necessary?
I’ve never used one before. If it gets to the point of it being clogged, you can try, if not, then replace it.
Is there not, an engine block drain plug, also? All the coolant you are getting, is out of the radiator bottom?
Thanks for sharing. Did it exactly following your procedures but in the last step to put the engine in service mode did not see much coolant going down the funnel. The fan just won't come on since it's freezing code today when I did it. Any thoughts on if I need to do anything else to bleed air out? Thanks!
+Yi Ni like we said in the video, when you're in maintenance mode, you're not suppose to be driving since all of the system is off or disable. Just run the engine until the radiator fan comes on. Check the overflow hose that goes to the reservoir until its hot as well. Eventually your radiator fan will come on, you can notice that our coolant starts bubbling because the system is hot and a couple minutes later, the fan will come on.
@@NutzAboutBolts how do you put into maintenance mode? Another reader explained how to get out of it by shutting the engine off.
@@harsep we showed that step in the beginning of the video
At 316 they go thru steps for maintenance mode. Then turning on ready mode (idling) to cycle cooling system.
Is this the only coolant that needs replacement? Or are there other coolant circuits?
One for the engine and one for the inverter
Great Prius maintenance video!
exactly where is the drain had a hard time seeing it is it on the driver side or passenger side or dead center does the whole plastic need to come completely off
on the driver side under neath the radiator.
does the method of getting into maintenance mode apply to Lexus CT200H as well? (same 1.8L engine)
To anyone else reading this now, the answer is yes
@@hiwrenhere thank you, a bit late (3 yrs old) , but I guess it beats never
Can you put a 2011 Prius into maintenance mode if you don't have a screen?
You’ll need the dash screen to see if it’s set in maintenance mode or not
@@NutzAboutBolts don't have MFD. But obviously don't need to put it into maintenance mode in order to change the inverter fluid.
What is wrong if the fan never turns on? Been having overheating issues. Sensor?
Can this be performed on a ct200h the same way?
My question as well. There are very few CT200 videos.
Yes. I just did my wife’s 2013 ct200h. Same procedure into the maintenance mode
helpful video for "maintenance mode."
So my coolant was bubbling up for 20 minutes or more and then when it slow down just a little bit I turned on the heater to let all the air out and it was still bubbling up a little bit and I close the cap while the coolant was still hot and turned off the vehicle am I going to be OK?
yeah it is fine, its bubbling because the engine was hot, ours did the same thing.
Good
Thanks for this video places want like 230 bucks to flush and replace.
Yeah they’re pretty pricey
How long did it took for the fans to start?
30 mins idling or 15-20 mins with engine rev to 2-3k rpm
Tha kool for video . I have a 2017 Prius two. I’ve driven 35k mikes . When should I change my coolant liquid?
Dealer says Toyota coolant good for 100k it's long life coolant, but good idea to do it at 80k
Hello! Thanks for the video. I have a prius 05 and change my first time coolant system. After done, I noticed a water flowing from the passenger cabin I don't know why. Could you please explain to me how to fix it? I really appreciate from your time.
Sovann HEAN it’s possible it could be from the AC drainage hose...
@@NutzAboutBolts I have checked there is no leak on the floor mat. But it just a sound of water movement that I noticed. Is it cause by AC?
Sovann HEAN that’s probably the coolant flowing through the evaporator behind the passenger dashboard. You’re fine.
@@NutzAboutBolts Thank you so much!
I don't understand what "bleeding the system" means if you just ran your car with a radiator cap off... is that called bleeding the system? Couldn't you just run you car after putting coolant in, and let it "bleed the system" on its own? Of is it bleeding only if the cap is off?
Trying to see if I have air in the system, or a bad thermostat/water pump. All my hoses on the bottom are cold, and and there is no heat I the car.
You need to put the car in maintenance mode so it’ll bypass the hybrid system and have the engine running only, then you can start bleeding the air in the system by running the engine until the engine radiator fan turns on. That’s when the thermostat opens and the bottom radiator hose is hot. If you have a bad water pump, youll get a check engine light. As for the thermostat, you’ll have to remove it and check if it still jiggles or not.
@@NutzAboutBolts I did get a check engine light for a bad pump. Then I reset the light, and while testing, the light never came back on. When I pulled the pump, it was completely seized.
@@OnlyTruthLove have you replaced the pump since then?
@@NutzAboutBolts ya, I replaced it. Car runs perfect now. No overheating. I should mention I replaced the thermostat also. But the problem was def the seized pump.
pump had 285k miles on it.
Is there any difference between bleeding in maintenance mode vrs just letting it run with the heater on ?aside from wasted time when the engine kicks off?
If you don’t run it in maintenance mode, your engine won’t be on, it’ll be the hybrid system on. If you run in maintenance mode, the engine will be running the whole time so it’ll circulate the coolant throughout the engine and warm it up.
Do we need to bleed it if we are just topping off ?
No
Hey guys, I put a bottle of the K&W stop leak in the reservoir to fix most likely a leaky head gasket.. (burns maybe a couple cups of coolant every 10,000mi or so)
..And like 3days later I just got the "check hybrid system" limp mode thing while driving.. I also basically lost all heat in the car after I put that bottle in..
I noticed the car was also overheating when it went into limp mode... so did I clog up the system? I've always heard that was a possibility with that kinda stuff, but this is the 1st time its ever happened..
Can I flush it/high pressure it out? I was gonna drain it tomorrow and pump a bunch of water through the reservoir or that top hose.., hoping to clear out as much as that stuff as possible..,? or does it not work like that?
It also looks like the Inverter has its own reservoir and drain plug as well.. Can I 'flush' that like a radiator? Does it matter which line I use? Are they dangers to pumping water through the system? I'm obviously going to fill it with the factory coolant when I'm done, but any advice would be appreciated..
how did that go for you?
@@nastytaco420 Not well.. I flushed it a bunch.. the system would randomly unclog itself a for a few moments, but it eventually stayed clogged..
Since its like a 9hr repair job for the heater core, and the transmission was having problems too, I decided to just buy a new car. Got the awd corolla hybrid. Sold the prius for $2k to a back yard mechanic. No clue if he fixed it or not.
If i have a Techstream what i need to do after refill ?
When I ran my car in maintenance mode and let it warm up the coolant kept overflowing out of the reservoir. What is the problem ?
That’s normal, make sure the reservoir is filled up to medium or max when the radiator fan turns on.
@@NutzAboutBolts I have had to fill the reservoir twice already. Should I just let it run until it stops over flowing and keep adding coolant ?
@@beeziebeats3634 we add the coolant to max and ran the vehicle in maintenance mode. That usually sucks the coolant into the cooling system and we just top it off till the fan kicks in. Did you do that?
@@NutzAboutBolts the coolant was at the full line and nothing was happening until the fan kicked on then I saw bubbles and the coolant level slowly was rising and would overflow then Go back down and then over flow again.
@@beeziebeats3634 how many gallon did you add? It’s probably purging air in the cooling system
I ran the car for 15 minutes and cooling fans never came on. Anyway to turn them on?
If it runs on idle, it usually takes 30-40 mins. You can try holding on the gas pedal for 15 mins to get the engine hot for the fan to turn on.
30-40 min is a long time. I overfilled the coolant and will drive it around and watch for low levels. Let it cool and refill as needed....Coolant should go through a pressurized system okay (with air in the coolant).
@@rohitbhatnagar7599 yeah we rarely do it while idling, we rev to 1500rpm and leave it there, or you can just go on a drive and watch for coolant level and hearing your fan come on
2010 prius is making a knocking noise when driving. Any way to fix that issue? Thanks for this video. Im going to change the coolant in my car today
Cylinder(s) misfiring. Do you have a check engine light? If so, go to your local auto parts store and ask for them to put on a code reader (if you don't own one).
@@troybonner91 the driving noise is a loud knocking when im driving at a lower speed. Imagine a lawnmower, that's how it is. Toyota told me its the engine
@@dessalinesx5091 I assume you came here because your losing coolant and if your engine is knocking as well, most likely have a leaking headgasket. About 1100 cost of job.
@@dessalinesx5091 The sound you hear is a piston preparing to slam its way through the side of your engine block.