[bayern68]

I have a 440ix GC. At 12k I got the low coolant level warning. 0.15 gal was missing in the expansion tank. No leak, all is dry. Still have the impression the water level is not stable. BMW dealer could not find anything, BMW recommended to replace turbocharger (under warranty). Someone had the same kind of problem?

[insanecoder]

Originally Posted by bayern68

I have a 440ix GC. At 12k I got the low coolant level warning. 0.15 gal was missing in the expansion tank. No leak, all is dry. Still have the impression the water level is not stable. BMW dealer could not find anything, BMW recommended to replace turbocharger (under warranty). Someone had the same kind of problem?

low coolant = replace turbocharger?
sure sounds like they know something
would love to see any bulletins associated w/B58 turbos

[bayern68]

Originally Posted by insanecoder

low coolant = replace turbocharger?
sure sounds like they know something
would love to see any bulletins associated w/B58 turbos

Turbocharger is water cooled.
BMW HQ (not the dealer) advised few issues with low coolant water are known on the B58. Without evidence of leaking they recommend to replace turbocharger.
Keep you posted.
Anyway I don't feel safe replacing a turbo on a new car. Even there are zero cost for me...

[insanecoder]

Originally Posted by bayern68

Turbocharger is water cooled.
BMW HQ (not the dealer) advised few issues with low coolant water are known on the B58. Without evidence of leaking they recommend to replace turbocharger.
Keep you posted.
Anyway I don't feel safe replacing a turbo on a new car. Even there are zero cost for me...

Yea keep us posted please
I doubt they would just replace turbo for little reason.. it costs $$$
they are just not telling us or letting us in the flaw
maybe try to dig for more info next time you speak to them
thanks

[DrifterX]

Had my first low coolant issue at around 42,000 km a couple months ago. Went to the dealer and they told me it's normal but couldn't explain to me why water would evapourate in a closed cooling system when I asked.

One thing I noticed was the service manager had a tough time opening the coolant reservoir tank cap. Once he got it open with some force, there was a lot of white crusty residue on the threads of the reservoir opening. This leads me to believe techs may have topped up my coolant during my 2 services I've had already and did not use distilled water in the mix which annoys the hell out of me...

Either way, I'm still baffled as to why coolant is evapourating in a closed system.

[G.Newt]

Originally Posted by bayern68

I have a 440ix GC. At 12k I got the low coolant level warning. 0.15 gal was missing in the expansion tank. No leak, all is dry. Still have the impression the water level is not stable. BMW dealer could not find anything, BMW recommended to replace turbocharger (under warranty). Someone had the same kind of problem?

I too also got the low coolant warning last month. I've had the car for about a year and over 10k miles. I simply mixed in 50/50 BMW blue coolant/distilled water and haven't seen the warning since.

I think there's another post somewhere about a turbo being replaced. I had a service bulletin regarding the DME connector, which they found there to be no problem, but not the turbo. Now I'm worried lol.

[FrankiE90]

Change the turbos.
If dealer is offering, take it. With lower miles best
have it changed and written up. Any case down the road will have a paper trail.

Drive that loaner.
If the issue comes back again -
Back 2 the dealer - eventually if problem doesn’t get fixed . Lemon.

[boosted]

25k mi - NOT a single issue!!! Very happy..
Just one time low coolant light came out after driving hard for two weeks. Just added a quart - never seen again

[bayern68]

Originally Posted by FrankiE90

Change the turbos.
If dealer is offering, take it. With lower miles best
have it changed and written up. Any case down the road will have a paper trail.

Drive that loaner.
If the issue comes back again -
Back 2 the dealer - eventually if problem doesn’t get fixed . Lemon.

Turboloader changed yesterday on warranty after low coolant message at 12k miles. According to the mechanics, turbo was leaking coolant water, but only internally, that's why no water leakage under the car.
Dealer also said it's a known issue on B58 2016 production.
I check in 2000 miles if level still at max... Hopefully yes.

[Musashi]

Originally Posted by bayern68

Turboloader changed yesterday on warranty after low coolant message at 12k miles. According to the mechanics, turbo was leaking coolant water, but only internally, that's why no water leakage under the car.
Dealer also said it's a known issue on B58 2016 production.
I check in 2000 miles if level still at max... Hopefully yes.

Has the coolant level remained steady?

[NormanConquest]

40k
1 time low coolant
Twice had to fix mud flaps
1 recall harness
And that it so far

[Mr Carrots]

Originally Posted by bayern68

I have a 440ix GC. At 12k I got the low coolant level warning. 0.15 gal was missing in the expansion tank. No leak, all is dry. Still have the impression the water level is not stable. BMW dealer could not find anything, BMW recommended to replace turbocharger (under warranty). Someone had the same kind of problem?

low coolant at 7k

dealer said it wasn't the turbo

BMW NA gave me a new engine :/

[MMacx1]

Just hit 20k 14 months
Got a total of 6 Drive trains malfunctions through out the year , shut down
re start fixes the problem
Crappy Dealer can not find nothing wrong. No error codes.
Other than that love the car. No other problems to report.

[NormanConquest]

Originally Posted by MMacx1

Just hit 20k 14 months
Got a total of 6 Drive trains malfunctions through out the year , shut down
re start fixes the problem
Crappy Dealer can not find nothing wrong. No error codes.
Other than that love the car. No other problems to report.

Any mods? I have 40k and zero DTM

[jalkster]

Originally Posted by MMacx1

Just hit 20k 14 months
Got a total of 6 Drive trains malfunctions through out the year , shut down
re start fixes the problem
Crappy Dealer can not find nothing wrong. No error codes.
Other than that love the car. No other problems to report.

Ive had a few, but all with low tank.

[BillD1953]

Just picked up my new X3 M40i today with 12 miles on the odometer.
Drove the car home and then for a 35-40 mile breakin spin.
Some time along the trip I noticed the tiny yellow "engine outline" light lit between the speedo and tac. Light is for "emissions". There are NO iDrive messages. Ill swing by the dealers tomorrow

[NormanConquest]

Originally Posted by BillD1953

Just picked up my new X3 M40i today with 12 miles on the odometer.
Drove the car home and then for a 35-40 mile breakin spin.
Some time along the trip I noticed the tiny yellow "engine outline" light lit between the speedo and tac. Light is for "emissions". There are NO iDrive messages. Ill swing by the dealers tomorrow

The light turns on everytime your exuberant driving kills a polar bear.

[BillD1953]

Originally Posted by NormanConquest

The light turns on everytime your exuberant driving kills a polar bear.

Good one....

[rockymtnpilot]

One failed coil pack which 2 weeks to fix since BMW sent the replacement part for Germany. Apparently they were VERY interested in this malfunction since I had only 6k on the car at the time. Besides that, the JB4 I just added has seemed to fix the disparity in performance due to varying environmental conditions.

[NormanConquest]

At 40k had creaking noise stop at the dealer and they said I needed a new driver seat frame

Mind you I'm heavy but not above 250 so he was pretty surprise it needed one as well

View post on imgur.com

[TatuBuilt]

34K Miles 440i F32 M sport package
Dinan Tune, ER Catless downpipe, AWE Tuning Midpipe, BMS Intake, Muffler Delete, Dinan springs and bumpstops, Michelin Pilot Sport 4S tires
No issues what so ever. Its also been modified since 8K miles and didnt give it the best of break ins.
Had coolant twice both a week or 2 after i went on a rally. I just top it off. But im about to do a full coolant change with the proper mix. Only thing is my turbo glows red after hard canyon runs that keep me in 1-3 the whole time. But that im not too worried about. Love the car and its a blast to drive even and the sound with an open exhaust is intoxicating.

[wacomlog12]

I've had an ongoing issue with the coolant in my 340i Touring. Dealer can't find any leaks so it's a bit of a mystery. Seems many others having a similar issue.