I have 16k miles on my 2021 M440i and just had my water pump fail. Coolant low warning light came on intermittently as you described. Took it to dealership and they replaced it under warranty. On a side note, service rep advised that there is now a Dinan M Performance tune for the B58 engine which boost HP to ~480 HP to the wheels and ~470 Ft. Lbs. Torque. they also have a new Air filter which will add a few extra HP's and Torque. Price for the Tune is ~$2200 plus tax and ~175 for air filter. it is warrantied for what is left on the original manufactures warranty.
I had just shy of 15k miles on my 2023 M340i when it developed a coolant leak. I took it to the dealership which diagnosed the water pump. The '23 model water pump has a plastic internal seal which failed on my car causing it to lose 2L of coolant in 60 miles. The dealership replaced it under warranty with a revised pump that uses a rubber internal seal.
I have a small amount of coolant loss from the tank closest to the rad pack (11000miles) (GEN1 late 2018 m140i), it's the start of winter here in the UK so I'll give my coolant a quick check again now if this is what can happen to the pump, thanks 👍
My 2021 m340 lost the pulley on the water pump while getting on the highway. Car had 12k miles. Fixed under warranty in October 2021 hopefully I got the upgraded part. The service advisor said he had never seen anything like this. I feel like that’s what they always say.
Same thing happened to me two days ago a 2021 m340i. Pulley came off hit the rad fan broke it, belt came off and water pump failure. Bled coolant like crazy.
92k miles gen1 B58 in a 2016 340i Water Pump started leaking from weephole. Probably similar cause as the coolant slowly gets low in these vehicles for some reason and it doesn't always notify you before damage to pump occurs.
Love your videos. Like Chris fix for the b58, my idle had a loud noise over the injectors and fuel tank vent valve and I loosened the belt and my water pump has enough play to make the noise so I have to do it now, about 82k miles gen 1
I have 57k miles on my 20 M340i I have a coolant leak right below where the coolant tank sits. I just drove it opened the cap slightly and more dripped out the bottom. No low coolant light.
I have a leak in the back area of my motor, I changed the the thermostat and the coolant reservoir cap I recently changed as we’ll. Could a bad water pump cause a leak in the back of the motor also ?
Hi Kern, 2017 440i GC (B58 Gen 1) owner here with 42K miles in the car and i’m also having a little drip from the weep plug on my water pump, but only a few drops from time to time and not every day… i need to top off a little of coolant every month but honestly is keeping the level relatively fine. I want to change the water pump to solve the issue but i need to know if there is a new updated part of the water pump or if i can buy the same one and wait 45K -65K miles until it fails again? Thanks for your opinion and for making this kind of content for the B58 comunity.
Oddly enough my wife's 2022 x7 had a tiny leak at 23k miles. Looks like it was an exact same issue as there was NO coolant on the block only a tiny spot on the under tray. About quarter size over a couple months time. Dealer replacing under warranty.
@@kern417 yes xdrive not lowered and 18inch wheels oem 225/40/18 at the front… the roads in my area are really bad thinking of going 17 inch with 50 profile tires it might help reduce shock on bearing
My stock 2017 440i LCI with 70,000km on the clock just got the “low coolant” warning yesterday.. took it to BMW today and they diagnosed the coolant leak as “Coolant leak from plug under water pump. Require to replace water pump as plug is part of unit” $1193 AUD 😢
What oil do you use to prevent water pump issues? On a real note I’m at 80k kilometers / 49k miles and my water pump is still running fine. I believe my coolant vent hose line might be leaking as every 1-2 months I lose a bit of coolant
I just had to change main coolant tank , as the lower hose Was leaking it might have been jusy the O Ring in the Pipe i changed that also … I now bleed the air with The electronic brake bleeding procedures for both reservoir hope Thats enough… and not have to drain whole Coolant
Man, I smell coolant in my engine bay but can not locate any coolant leaking and I dont have any warning lights. This is a 2022 m340i w less than 5k mi.
@@kern417 on both tanks the levels are good, caps are clean with nothing on the outside of tanks. Idk if it could be spilled coolant from the factory but I feel that would’ve been burnt off by now. It’s not a heavy coolant smell but it’s def there. Driving me nuts.
I have 16k miles on my 2021 M440i and just had my water pump fail. Coolant low warning light came on intermittently as you described. Took it to dealership and they replaced it under warranty. On a side note, service rep advised that there is now a Dinan M Performance tune for the B58 engine which boost HP to ~480 HP to the wheels and ~470 Ft. Lbs. Torque. they also have a new Air filter which will add a few extra HP's and Torque. Price for the Tune is ~$2200 plus tax and ~175 for air filter. it is warrantied for what is left on the original manufactures warranty.
I love my 340 so much. Pretty reliable but even so-extremely serviceable. After working on fruends Audi i’ll never take B58 for granted
Facts, coming from a former vs owner 😂
I had just shy of 15k miles on my 2023 M340i when it developed a coolant leak. I took it to the dealership which diagnosed the water pump. The '23 model water pump has a plastic internal seal which failed on my car causing it to lose 2L of coolant in 60 miles. The dealership replaced it under warranty with a revised pump that uses a rubber internal seal.
Thanks for that very informative knowledge transfer!
I have a small amount of coolant loss from the tank closest to the rad pack (11000miles) (GEN1 late 2018 m140i), it's the start of winter here in the UK so I'll give my coolant a quick check again now if this is what can happen to the pump, thanks 👍
My 2021 m340 lost the pulley on the water pump while getting on the highway. Car had 12k miles. Fixed under warranty in October 2021 hopefully I got the upgraded part. The service advisor said he had never seen anything like this. I feel like that’s what they always say.
The date on the tsb is September 2021 so it was still very new to dealers at that time
Just had my serpentine belt go at 14000 miles on my 2021 m340i, water pump had to be replaced because pulley wheel sheared off.
Yep sounds like the same thing. First time i heard about this i assumed it was a freak accident too. But it quickly became more common.
Same thing happened to me two days ago a 2021 m340i. Pulley came off hit the rad fan broke it, belt came off and water pump failure. Bled coolant like crazy.
92k miles gen1 B58 in a 2016 340i
Water Pump started leaking from weephole. Probably similar cause as the coolant slowly gets low in these vehicles for some reason and it doesn't always notify you before damage to pump occurs.
Love your videos. Like Chris fix for the b58, my idle had a loud noise over the injectors and fuel tank vent valve and I loosened the belt and my water pump has enough play to make the noise so I have to do it now, about 82k miles gen 1
I have 57k miles on my 20 M340i I have a coolant leak right below where the coolant tank sits. I just drove it opened the cap slightly and more dripped out the bottom. No low coolant light.
Kern I love you man you’re a lifesaver, I hope the woman in your life is routinely giving you the sloppiest of top because you deserve it 🤝.
My coolant is leaking from that plug too, do you need to replace the whole pump when there’s leak in that plug?
I have a leak in the back area of my motor, I changed the the thermostat and the coolant reservoir cap I recently changed as we’ll. Could a bad water pump cause a leak in the back of the motor also ?
Could u leave the link to buy the waterpump
added a link to the video description
2017 G32 B58. Аналогичная течь из дренажного отверстия на помпе. Пробег 150 000 км
Hi Kern, 2017 440i GC (B58 Gen 1) owner here with 42K miles in the car and i’m also having a little drip from the weep plug on my water pump, but only a few drops from time to time and not every day… i need to top off a little of coolant every month but honestly is keeping the level relatively fine. I want to change the water pump to solve the issue but i need to know if there is a new updated part of the water pump or if i can buy the same one and wait 45K -65K miles until it fails again? Thanks for your opinion and for making this kind of content for the B58 comunity.
What part number for the gen 2 new water pump
Should be 11515A444F4
@@kern417they are ditect Bolt on for gen 1?
Is it necessary to replace the brace too? I have a 2016 340i
What brace
Oddly enough my wife's 2022 x7 had a tiny leak at 23k miles. Looks like it was an exact same issue as there was NO coolant on the block only a tiny spot on the under tray. About quarter size over a couple months time. Dealer replacing under warranty.
anyone ever get coolant leak into oil?
I’m having issues with front wheel bearing on my m240, have you heard of such issues, change both front in less than 5k miles
Is it XDrive? Are you lowered? Wheel setup?
@@kern417 yes xdrive not lowered and 18inch wheels oem 225/40/18 at the front… the roads in my area are really bad thinking of going 17 inch with 50 profile tires it might help reduce shock on bearing
@@hass1005 maybe get your alignment checked
My stock 2017 440i LCI with 70,000km on the clock just got the “low coolant” warning yesterday.. took it to BMW today and they diagnosed the coolant leak as “Coolant leak from plug under water pump. Require to replace water pump as plug is part of unit” $1193 AUD 😢
What oil do you use to prevent water pump issues?
On a real note I’m at 80k kilometers / 49k miles and my water pump is still running fine. I believe my coolant vent hose line might be leaking as every 1-2 months I lose a bit of coolant
🤞🏾🤞🏾🤞🏾
Our 2017 540i leaked from the pump, car has 88k on it FBO and tuned for 38k of them. Simple replacement.
How much did replacement cost? Did you take it to bmw? My 540i 84k miles just dropped a shit load of coolant
@@wordlife_97 I worked for BMW so my cost is skewed. I can’t remember the last time we sold one retail.
@@NWABIMMER_KEV ah man I hope it’s not too much for me
@@wordlife_97how much did it come out to?
Just had to replace mine at 36k due to coolant loss
How much did it cost? Did you take it to bmw? Mine just leaked so much
I just had to change main coolant tank , as the lower hose Was leaking it might have been jusy the O Ring in the Pipe i changed that also … I now bleed the air with The electronic brake bleeding procedures for both reservoir hope
Thats enough… and not have to drain whole
Coolant
As long as you bled the system and see no more leaks you should be good 👍🏾
@@kern417 So far so good … My car has 112tkm early next year i will do Gearbox Oil change, then spark plug change , then tune it
Mine is getting replaced as we speak. 2022 X3 M40i 45k miles...
Man, I smell coolant in my engine bay but can not locate any coolant leaking and I dont have any warning lights. This is a 2022 m340i w less than 5k mi.
Is you coolant level low
@@kern417 nope. Check it about 20 mins after I left the comment and it was at the max line.
@@jasonsutton6193 both tanks? Any crusty material around the threads of the cap? That's very strangem
@@kern417 on both tanks the levels are good, caps are clean with nothing on the outside of tanks. Idk if it could be spilled coolant from the factory but I feel that would’ve been burnt off by now. It’s not a heavy coolant smell but it’s def there. Driving me nuts.
@@jasonsutton6193 is it stronger by the exhaust?
BMW just replaced mine at 34k under warranty. Went in for an oil change and they noticed it. 34k 22 m340i
I just replaced water pump on my wife’s 21 x5 b58 with 18 k miles 🤷🏻♂️……
Mine done at 40k miles. Luckily still under warranty, makes me rethink keeping this car long term
@@peemo888failed water pump will not make me sell the car , bmw water pump is a common thing to fail .
Have replaced few of them easy to replace.
@@Top_g80comp yah, but its way too early to fail dont you agree?
@@peemo888 mine failed at 18k miles that is unacceptable for sure , but that wont make me get rid of it , love this car 🤘💯
@@peemo888this is literally the only issue with b58 lol
The Will Smith thumbnail L😂L
felt like it was the best way to illustrate my emotions