2011 M3 e92 no start and no crank

[mxzrev]

Hello everyone- looking for some guidance here- Brand new battery installed months ago. Never any start issues. Lights on, AC runs, radio works.

Today went to start it and it cranked for about 2 seconds and that was it. Has not made a cranking noise since. barely a clicking sound is all that is audible.

Also, It sounds like the fuel pump(?) is running when the car is turned off. Never recall hearing it before. Coming from the passenger rear right by the fuel tank.

Electric motor sound continues for about 2-4 mins even with the key in my pocket. Again I can't recall ever hearing that before.

Thanks for any suggestions on what this might be.

[MPower7]

Do you have a code reader?

[mxzrev]

Yes sir. Getting P158A

[MPower7]

Originally Posted by mxzrev

Yes sir. Getting P158A

I believe that is the Throttle Acuators. Someone who has more knowledge can chime in but that is what it coming up in my search.

[mxzrev]

Thanks MPower7,
I found the issue- completely broken ground strap by the exhaust header. Should've gone there 1st I guess. All set now. Car fired right up. I am ordering new ground straps tomorrow.

[bvrider1]

Always nice when people return back with their findings. Glad that worked out for you.

Originally Posted by mxzrev

Thanks MPower7,
I found the issue- completely broken ground strap by the exhaust header. Should've gone there 1st I guess. All set now. Car fired right up. I am ordering new ground straps tomorrow.

[Dakar Bam]

Originally Posted by mxzrev

Thanks MPower7,
I found the issue- completely broken ground strap by the exhaust header. Should've gone there 1st I guess. All set now. Car fired right up. I am ordering new ground straps tomorrow.

Where is this ground straps? Mine only has this problem when my car stands for like 7 hours

[Helmsman]

Made me curious too, found this: https://www.m3post.com/forums/showthread.php?t=1444544

Makes me wonder about the ground strap further back on the exhaust back box. Gone in my case, wonder if it does anything else than adding further ground/redundancy?