2010 750 Valve Seals replaced in February, now the dreaded Transmission Malfunction ! - Bimmerfest - BMW Forums



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  #1  
Old 06-11-2019, 05:02 PM
hgarcia hgarcia is offline
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2010 750 Valve Seals replaced in February, now the dreaded Transmission Malfunction !

So, a little history on the vehicle. I had my seals replaced through bmw dealership here in Northern NJ back in Late January/early February of this year 2019.

I leave the gym, about to merge onto the highway, I go about 30 miles and gradually increasing in mileage and BOOM I just hear the rpm sound go off and I accelerate and the car won't give off any power. Pretty scary but luckily it wasn't rush hour. The car would not go more than 30 miles.

I am waiting on a friend so hopefully his computer can give read the errors on my 750
The car only has 66,680 miles and only about 1,400 miles since when they changed the seals.


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  #2  
Old 06-11-2019, 05:45 PM
hgarcia hgarcia is offline
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Mein Auto: 750Li
Managed to get my uncle to connect his scanner and one code that popped up was: Ratio monitoring clutch e implausible

400441
Drove fine after the vehicle was off for 10 minutes. Will do some more research and hope it's not the transmission.

One thing to note, back in January when they did the seals, the service agent said they had to put transmission fluid because it was very low. When I picked my car up, he said that eventually I would need a new transmission...and here we are now

Last edited by hgarcia; 06-11-2019 at 06:04 PM.
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  #3  
Old 06-12-2019, 02:44 AM
Prezzi Prezzi is offline
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I have the same exact fault in 09 7 series. You need a new transmission as far as I'm told. The cheapest I've seen is $5,000.
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Old 06-12-2019, 06:40 AM
hgarcia hgarcia is offline
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Quote:
Originally Posted by Prezzi View Post
I have the same exact fault in 09 7 series. You need a new transmission as far as I'm told. The cheapest I've seen is $5,000.
great
I see you are in NY, I am in Northern NJ...do you have a reputable independent shop that quoted you this price?


Also, are you currently driving it? How long has it been since you got that error?

Thought I would hold on to this car for a few more years after the dealer did the valve stem seals replacement. I bought the vehicle with 49k miles and one would think that it wouldn't have these types of MAJOR issues from a brand like BMW.
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Old 06-14-2019, 07:22 PM
Prezzi Prezzi is offline
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Try this shop in Brooklyn
https://www.google.com/url?sa=t&sour...q1PhKMtAWgIuR7. They know BMW's.

Or this place in Queens
https://www.google.com/url?sa=t&sour...moaZNVHN4d9w2G.
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  #6  
Old 06-14-2019, 07:58 PM
HerbP HerbP is offline
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Mein Auto: 05 645Ci, 07 750, 14 750M
Our transmissions rarely fail, but seals on or in the valve body do fail. BMW will tell you the tranny is bad, but your problem is most likely in the valve body, or low fluid level. The fluid should be changed every 50k miles, regardless of what BMW says!
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Old 06-15-2019, 08:17 AM
hgarcia hgarcia is offline
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Quote:
Originally Posted by HerbP View Post
Our transmissions rarely fail, but seals on or in the valve body do fail. BMW will tell you the tranny is bad, but your problem is most likely in the valve body, or low fluid level. The fluid should be changed every 50k miles, regardless of what BMW says!
I had the seals replaced in January of this year. Got the car back in February.
The SA mentioned my car was low on transmission fluid so they put 2 quarts in it. Also stated that I might need a new transmission soon.
So I'm not sure if they actually added it or removed the fluid
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Old 06-17-2019, 06:41 PM
hgarcia hgarcia is offline
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got it checked with a different scanner: snap on zeus
this one doesn't show the 400 441 error but shows two other codes:

alternator no communication 210 901
cd9 304

no other information showed when we clicked each error
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Old 06-17-2019, 09:48 PM
Prezzi Prezzi is offline
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Location: NEW YORK
 
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Mein Auto: 7 SERIES F01
Scan your car with Ista+. I know I guy in the UK tha sells the software. If you're interested.
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