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Old 05-17-2022, 02:29 AM
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Join Date: Jun 2016
Location: Toronto, CA
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2011 X5 35i N55 - intermittent starting + CEL on WOT

Hi everyone,


over last few months, my 2011 X5 35i (02/2010 build ) has random starting issues.


here is a video of what I'm taking about


https://youtube.com/shorts/WD_dNzbikjo?feature=share


I also seem to get the half CEL issue on WOT - or above a certain speed. Not sure if the above are related.


I pulled some codes using INPA and here is what I'm seeing

2E0F
2DCE

I know I have issues with the valvetronic which is the cause of the above 2- but I'm not about to replace the ValveTronic motor + sensor and the camshaft on this car.

What I DO want to uncover is the reason why the car fails to start every once in a while. Usually when it fails to start and i leave it for long enough it will eventually start up.

Last time this happened I had it battery boosted and it started right up. Then I took it home and charged the battery for 4-5 hours. Does this mean the battery is on its way out? any way to check this hypothesis? I replaced the battery about 2.5 years ago.


Also got this code

2C57 - Charging pressure control, plausibility Pressure too low.

Fix for above seems to be to replacing the pressure converter:
Genuine BMW - 11747626351 - Pneumatic Wastegate Actuator.


Has anyone done this on an X5 before?

Last edited by bmwannabe; 05-18-2022 at 10:25 PM. Reason: Grammar
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