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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Drivetrain Malfunction Warning Light
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      05-02-2020, 05:27 PM   #1
jchenman
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Drivetrain Malfunction Warning Light

Hi need some help or have anyone have the same issue as me. 2014 535xi with 76,000 miles. I was accelerating and the Drivetrain Malfunction light came on, so I pull over shutdown the car and restart and the light went away. I thought it was the spark plugs and coils, I replaced them all. Test drive it again, accelerated and the same light came on. Do anyone know the issue, the hidden code was useless (B7F668 Envi 16777216 Env2 195448573). The more research I do, people are saying it's the high pressure fuel pump, does that make sense or do I need to take it in the shop? Your help is appreciated!
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      05-02-2020, 08:15 PM   #2
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Originally Posted by jchenman View Post
Hi need some help or have anyone have the same issue as me. 2014 535xi with 76,000 miles. I was accelerating and the Drivetrain Malfunction light came on, so I pull over shutdown the car and restart and the light went away. I thought it was the spark plugs and coils, I replaced them all. Test drive it again, accelerated and the same light came on. Do anyone know the issue, the hidden code was useless (B7F668 Envi 16777216 Env2 195448573). The more research I do, people are saying it's the high pressure fuel pump, does that make sense or do I need to take it in the shop? Your help is appreciated!
Code B7F668 - usually comes after flashing/updating the car... Could also indicate battery is going bad... I didn't find anything for the other two codes.


Just go to bmwfault.codes on the browser and look up the codes for full description.

Last edited by ziekxq; 05-02-2020 at 09:37 PM..
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      06-03-2020, 05:40 AM   #3
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Unfortunately get ready for the endless N63 engine nightmare. I finally got rid of our last one which we went through 2 used 2014 550's. Both had 79k and 72k miles on them. Constant pita! Replaced fuel pumps, software upgrades, new battery, but NO CODE CAME UP WHERE BMW would replace under extended warranty which is complete bs. My Indy ran the codes and it pointed to the right front fp. Never knew this car had 3 fuel pumps. Always had the Drivetrain Malfunction pop up. The fuel injectors are another huge issue with this car. People as you know have had BMW replace the engine only if you waste half your life going through the continual process to have them finally throw on the towel and get lucky with them to say YES. It's a horrible experience for just owning a car. It's inexcusable actually. OP get ready for the roller coaster ride of back and forth to the dealer. Life is too short to for such a hassle to fix a car. Good luck!!
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      06-03-2020, 07:26 AM   #4
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Originally Posted by 335xi Beast View Post
Unfortunately get ready for the endless N63 engine nightmare. I finally got rid of our last one which we went through 2 used 2014 550's. Both had 79k and 72k miles on them. Constant pita! Replaced fuel pumps, software upgrades, new battery, but NO CODE CAME UP WHERE BMW would replace under extended warranty which is complete bs. My Indy ran the codes and it pointed to the right front fp. Never knew this car had 3 fuel pumps. Always had the Drivetrain Malfunction pop up. The fuel injectors are another huge issue with this car. People as you know have had BMW replace the engine only if you waste half your life going through the continual process to have them finally throw on the towel and get lucky with them to say YES. It's a horrible experience for just owning a car. It's inexcusable actually. OP get ready for the roller coaster ride of back and forth to the dealer. Life is too short to for such a hassle to fix a car. Good luck!!
He said he got 535i xDrive lol.
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      06-03-2020, 12:30 PM   #5
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Originally Posted by ziekxq View Post
He said he got 535i xDrive lol.
...gulp. rut row...
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