Volvo S60/S80/V70/XC70/XC90 CCM Fan Button Repair
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- Опубликовано: 26 фев 2022
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Video about fixing your Climate Control Unit (CCM) fan button. It will also show how to clean the cabin temperature sensor and fan. The car used is XC90, removing the CCM is slightly different on other models but the fix is the same.
Here is photo of the resistors you should resolder as well:
imgur.com/a/TeTCa1G
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PHENOMENAL. My 2007 XC70 would only consistently allow auto fan control - any manual use was "iffy" (usually didn't work). I'd long suspected it was due to the then-new lead-free solder; it took awhile for manufacturers to get the alloy right and any heat cycling would crack the joints (XBox "red ring of death," laptops etc.). I'd hoped to pop the board in my oven to re-flow everything but there was too much non-removable plastic. Used your method and it worked like a charm, in fact, the sketchy looking joints were on the (2) resistors (makes sense since resistors can get hot... careful - they slide when the solder melts!). I'd add the details about key position II and disconnecting/reconnecting the battery as in your other videos.
Thanks!
This must be the same problem that the radio volume knob has!!
@@zzoinksMight just need a reset or cleaning. When I removed the radio/climate unit (first doing the ignition/battery disconnect sequence) I also did the (maybe apocryphal) extra step of clamping together the disconnected positive and negative battery leads. My radio had randomly been going into “search” when certain presets were pushed; though I did nothing other than that plus electronics cleaner to the radio controls, it now works great.
Thanks for a very complete video! the fan knob on my 2005 XC90 became non-functional, so I had no manual control and had to run the system in auto mode. I was skeptical, but followed your instructions and the re-soldering did the job! Works like new!
Thanks, well done!
Hey man, it really works. Thanks a lot. Greetings from Czech Republic. Volvo v70 II 2005
Thanks for sharing this idea. I did re-solder the chip contacts under the fan knob. It still did not work: every turn of fan knob, it still skips speed level. What worked for me is when I followed up by spraying wd-40 specialist silicone on both sides of the circuit board. I let it dry for about 90 minutes, and it worked. I did disconnect the battery first before I took out the AC control module. And no, I did not have the contact cleaner wd-40 at the time.
Many, many thanks for the advice, especially since it's hard to find replacement parts (in a distant country) for a 2005 car in 2024....
Thank you so much for this! Just fixed my wife’s S60 with this repair method. I was about to buy a used climate module off eBay until I found this.
Well done!
Thanks! Just did this repair on my S60 and it worked flawlessly
Great!
I replaced the entire board from a spare on eBay before watching this video. Could well have just been the bad solder joins 😢 excellent video, in sure it will help a lot of people!
Cheers!
Thank you for showing us how to do it. I bought XC70 recently and could not figure out how to operate the fan manually. It turned out it was faulty fan knob. Followed your video and fixed it. Works like a charm! Thanks 👍👍
Thanks, good work!
I have a2002 xc70 the knob turns color when I turn it but now won't blow does this mean the regulator went out and the blower or is it this what he's showing in the video seems much easier to do this?
@@oudogs TBH with you I'm not really sure but when my fan was faulty the LEDs weren't working either.
My lights work on the knob and the auto and the manual is just the blowerout the vents that don't work
To me it looks more like regulator or blower motor gone. Did you check fuse?
Super job! It worked on my 09 XC90.
One more sub! If after almost 5 years can I fix one of the last pending I had, it will be a quick success!
Totally worked!! Success!! Thanks a lot man!
Thanks for your video. I resoldered as shown in the vid. it worked right away but then seems like it has to warm up or something before it starts to function properly? I'm going to give another day or two before taking it out again...unless your familiar with my issue...Thanks.
Very nicely done. Thank you
very nice guide! I tried but failed nonetheless.
I don't know how to tell a "nice and clean" solder from a bad one. So that might be the problem.
Thank you. Works like magic
You're welcome!
Another thing to maybe check if your having this problem is the coupler that leads to the blower fan, i was about to solder my switch and figured maybe i should test if the fans even getting the signal from the switch and the ground was arcing and melting the coupler for some reason. My guess is the kids blocked the vents and had the fan on full and the motor was possibly getting hot or it just wasn't a good contract. Anyway hope this helps anyone with this issue, maybe a proper diagnosis of the fan vids in order? I found this video to be the best and most detailed so i propose its from you 💪😌
Thanks for the idea. I have actually seen it before and I can imagine it could be because of a poor connection. If your fan is not working at all there can be many different causes. Easy check if you need to fix the CCM fan knob is that you just press the auto climate button and see it it works then or see if the lights around the knob move when rotating it.
many years later....had to remove motor (twice) as something in the whole CCM setup isn't working - no fan. Been working my way through fuses, CCM, fan, fan controller resistor, air quality sensor...one thing to note is I have found it is possible to replace the air sensor when you have the fan out. This is worth doing because you should really use a wiper arm puller to remove the wiper arms to get to the sensor from above. If only changing the sensor, sure, this is way less hassle than removing the fan motor. Hella make an air quality sensor for at least half the Volvo stamped one. IMO it is worth replacing this sensor when fan is out because it sometimes messes with the CCM logic. Also replace the CCM bulbs while out, and CAREFULLY clean the cabin air temperature sensor and fan - do not break the wire. If you do, it is possible to obtain correct wire and solder a new one in (search RUclips), but avoid snapping in first place! I did resolder all the fan speed joints on the rear too. They will dry/break, so you might as well do that too while the whole dash is out!
gracias por el video, efectivamente a mi ahora funciona
1000 gracias!!!!!!!
Excellent timing of the video.
I have a 2003 S60 and the fan isn't turning off when I turn the ignition off and lock the car. It was suggested I resolder the CCM.
Now I can attempt this with some guidance, rather than going in blind.
Does it always stay on or just sometimes? Can you otherwise adjust the speed when the car is running?
@@HeapsofProjects stays on with ignition off, key removed, and car locked.. for hours
Speed adjust stopped working today, so it just blows at one speed now.
@@alien_marksman okay, you can try this but I don't think it would fix your fan staying on issue. Do any lights on CCM stay on? Would it run until battery is empty or will it stop eventually?
@@HeapsofProjects all the CCM lights work. The fan speed indicator lights go up and down according to input from the knob. Fan speed isn't changing, and it would still run untill the battery went flat if I let it. Been pulling the Fan Fuse to stop it.
@@alien_marksman I would say your problem is not the CCM but maybe the fan "resistor" which is in the same housing with the fan and can be bought separately.
oh those seat covers look so cosy, might get myself a set for the winter!
They are!
going to give it a shot
많은 도움이 되었습니다. 감사합니다.
What exactly did you do to the knob? It looked like you just re-touched solder points. did you replace the knob, or clean it out?
Great video. I've got a 2006 v70r wagon and I was wondering what I was going to have to do about my fan knob acting funny. Is there also a cabin filter in these Volvos as well that gets plugged up ? I'll have my fan on all the way and it does seem like much air comes out of my vents. Hardly any.
Yes there is cabin filter and that can cause the problem you have
excellent :) thank You
Hello anyone knows what to do when it shorts and fan i is on whether the ignition is on or off... I already replaced the fan blower and resistor. I didn't see any relays in the engine hood for the fan blower. I think the short has to be inside the fan controller
Success! Worked for me
Well done!
Appreciate the video, that really helps. Question can i use regular soldering iron solder? I don't have the flux pen.
Yes you can 👍
@@HeapsofProjects Thank You Soooo much for your 👍🏾👍🏾
@@eltonharris4502 no problem at all
THX for the DIY Video. I have the same problem on my 2008 XC90 and this will help me to fix my problem. You also talk about forgetting to resolder some SMT resistors. Could you please let me know or maybe you can edit your video and point with arrows what are the resistors you recommend to resolder too.
I will try to do that in few days.
Hi, please see this image of the 3 resistors: imgur.com/a/TeTCa1G
I'm done solder under the knob button, but's the blower some time don't off after i off the engine,some time can't on the blower ...
So curious 😢, please help
Great video! I can’t get the green tab off for the AC components. What tool where are you using in order to depress that green top and remove it?
If you mean the green plug then yes that can be bit trickey. I think I used L shape allen key for that.
Got it thank you!
Thanks so much for this.. My lights used to bounce around like that before and now they don't come on at all and no fan whatsoever. Didn't drive it over the winter and even chilly now. did you just re heat the old solder? I am going to try this tonight when i get off work. next step will be the resistor but no lights on the knob had me suspicious
Yes, you can just reheat but add some flux when doing so, otherwise you will end up with a crappy connection.
Hey Mike, did yours get fixed because I was wondering the same, whether it's resistor or blower motor. I've checked fuses but no luck yet and haven't done this yet.
@@nabeeljacksonrhoda6480 hey no it didn’t work for me but if ya have an hour its a simple thing to try. Im sure mine was the blower motor itself but i ended up just selling the car to someone with more time money and patience then me. Fighting stuff for 2 years i was done lol
Great tip! The solders on mine looked fine so I was sceptical that it would be that, saw that Kevin Crosby was also sceptical so I tried it and it now works perfectly again. If not for this video I would have bought a new pot. That would have fixed it too but with a lot more time for part shipping and effort with desoldering the old one and soldering the new one. Thanks!
Good job!
@@HeapsofProjects It went back to its broken state unfortunately. Guess I will have to hunt for a new potentiometer after all...
@@gusos234 most likely it's still the solder joints. You can try redo them, use some new paste and flux 👍
What is the paste for? Ive never done any soldering other than cb/ vhf radio antennas and its much larger, simpler contact with no fux or paste neccessary. Im ignorant to the paste/ flux and how/ what to do with it. Awesome video though!
Flux helps solder to flow
Thanks for documenting this. I have the exact same issue with the knob. I'm trying to understand, why does the knob go bad? Does the solder points for some reason lose contact?
Also, my module has another issue. The AC is always running. Even when the button select is OFF. For example: I run the blower while the AC button is OFF, and it's blowing cold or hot air depending on the temperature set. Will resoldering the resistors fix that? Thanks again.
Yes it is a solder problem due to temperature/vibration/chosen material etc. It won't solve your other A/C issue tho, does the light go on an off when you press the ac off button?
The light works as intended. The light switches color from green to orange and back, so it works as intended. But when the light is orange (OFF), it's still producing cold/hot air. @@HeapsofProjects
The knob on my 05 V70R stays at four, doesn’t go up or down, auto still works but will this fix this issue on the manual fan knob
Yes. Most likely it would.
Excellent video and fix . Question on the temperature sensor as yours had bunch fluff etc. Could a gummed up sensor like that impact the air conditioner . Mine blow cold but not super cold . I may need a recharge of Freon but occurred to me when you mentioned temp sensor ? New subscriber and Tnx for video . 2009 XC90 V8
Thanks, it would only make it see the wrong temp in the cabin so if its not blowing not really cold it's more likely gas issue
Спасибо
Did the soldering, now fan stuck at 100%, do you have any knowledge about what could be the issue?
Could you take a photo of the soldering? Probably just a bad soldering joint somewhere.
The driver's seat on my 2007 Volvo s80 2.5T stopped operating electronically. How can I fix it?
Is that fan switch supposed to be able to turn around in complete nonstop rotations, with no stops?
Yes, thats correct.
One question...before fixing, front windscreen button, defroster, isnt working too?
Sorry, haven't had that problem before so I can't help you.
I didn’t see where did you buy the switch from or is there a part number? Thanks.
I didn't replace the switch, just resoldered the connection
First of all, thanks so much for a clear video!
Seems I fucked up somewhere however 🙂 the AC is definitely cooler, the rotary button works better, but not 100% (guess I need to go over it a couple of times)
But I gifted myself a new problem in the process, giving an error message on the dash "urgent revision airbags". Any idea what that could have been?
Appreciate your help!
Yes, you might have to resolder again. You get SRS fault when you have disconnected CCM and accidentaly turn the ignition on. You will need diagnostic tool to erase that code
Can you just disconnect the battery for a while to turn the srs light off?
@@kalel0192late response, but no. It stores it in memory. You will need a diagnostic tool to clear it
Tried to resolder. Worked well for couple drives, then stack. Looks like second resoldering killed the unit. The fan speed is working, but somehow I lost a heated seats :-(
Yes, it can be bit hard with SMD resistors as you can't really tell if you have a good contact before putting everything back together and testing it. I don't have any pulled apart at the moment but you can trace the track from the seat heater switch and try resoldeing ones there. Most likely it's still poor connection
@@HeapsofProjects This is now resolved. It's me who didn't know that the seats are operate only when you starting the car. 🙂
However, the original problem is still there (the fan knob ether not operating or having fun behavior).
Got another unit from junk yard (only one was available) - the unit is fully working, but, to my luck it's a bit different form size (even the PCB a bit wider)...
Can't fit it. I am afraid to take any components out, since looks like this CCU is connected to everything else in my car.
I can't even lock the car with remote without it 🙂
So... will look for another unit that will work and fit, before I ruined the car completely 🙂
Thanks!
Worked great for 15 minutes & then fan knob stopped working altogether again. 2nd time I resoldered the fan speed decreases by 1, then increases by 1 back & forth no matter which direction the knob is turned. Each click of the knob decreases then increases by 1. Any ideas if this is due to a connection issue on a resistor or 1 of the knob connections themselves?
It's hard to say, most likely the knob connection. Try to use plenty of flux and go over them again.
@@HeapsofProjects thanks I’ll give it a shot
Hello. You don't know what's wrong if you turn off the ignition, but the interior fan continues to work?
If it's always on then most likely you have failed blower fan resistor. It is in the same housing with the fan but can be replaced separately.
My auto mechanic said it's the regulator or the blower or both so so you think it could be just this fix??
Does it work when you press Auto? If not then your mechanic is probably right.
@@HeapsofProjectsmy button dont work, but light red of ac is working, shud i do this or ? Before that my ac fan of cabin works strange starts and goes
You can take the shift stick off ... just pull hard up as the first
This fixed my fan problem, but now my passenger side temp control and the person in the middle no longer light up at night. Any ideas?
I would just go over the resistors again and maybe try adding some fresh soldering paste/lead
My blower fan is not working on manual or auto, how do you differentiate between a bad blower motor resistor (or fan) and this switch problem? Thanks
If it's not working on auto then it is not the swich problem. Also you should see the small LED-s light up if you turn the knob.
@@HeapsofProjects the LED's were moving but no air so I tried re-soldering the switch and still no air. Switched the blower/resistor unit with one from another Volvo I have and it worked. Thanks
What temperature are you soldering at?
Usually 330-350 *C
I think worst case is having the fan motor come on by itself with the key out/not running/locked. The battery doesn't like that.
How do i know if i did it right lol
It starts working 😀
No good for me. I miss the dismantling of the CV joint form the Axis. Most video's just show the fixing, not the "Take apart" part.
Did you mean to comment the CV axle video? What part of the process you would like to see?
@@HeapsofProjects Hey thanks for Reply. I do have A s60(2002) and I can't get the CV Joint from the Axle. I have to replace the CV Boot but I do not have The special Cone to drag it over the CV Joint
@@johnenrani okay it can be bit of a hassle sometimes when the groove or stopper itself has worn. I think the best way is to clean as much of the grease away from the CV as you can. Clamp the shaft in the vice about 100mm from the CV. Now you should be able to move the CV on the shaft little bit, maybe 1mm or less. You push it towards the vice as far as it goes, get a good punch with at least 12mm diameter or a 1/2in socket extension (not good for the extension tho). Now you put the punch againt the center of the cv so its touching the axle as well but wont actually move the cv away from its position. Now give it a good hit with decent hammer. If it didn't come off you push the cv towards the vice as far it goes and repeat.
;
Pero no pudiste desoldar el controlador...como q así lo armas le falta a tu video....