Technical Accessory belt spins but engine won’t crank or start

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Technical Accessory belt spins but engine won’t crank or start

AxelCDA

Member
Joined
Jul 24, 2025
Messages
27
Points
58
Location
Idaho
I’ve got a 2014 500L, and I’m in the US. A couple of months ago while driving the car suddenly shut off and hasn’t started since. I have replaced the starter, timing belt, Cam Position Sensor, Crank Position Sensor, spark plugs, ignition coils, head gasket, and piston rings. After all of that, there is no change to the situation. Forgot to mention, there was no compression in any of the cylinders at the beginning of this saga, and still no compression.


I’m about to give up, sell the car as is and buy something different for my wife. After reinstalling the engine there is one sensor plug that I can’t find a home for. It’s in the backside of the engine and when I google the numbers on the plug it comes back related to the ignition coils? The numbers on the sensor plug are 10092983 C0D A and 322DBEHC, see pic and videos. I’m desperate for answers, clearly this is beyond my mechanical understanding. I’d like to avoid taking it to a mechanic and relying on all of you for some ideas.

Image_2025-11-06 03_49_29_467.png
 
Model
500L
Year
2014
Mileage
98000
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