tonee

Hi all,

I have a 2004 525i with the M54 engine and it has been shutting down on its own while driving. It used to only occur when slowing down coming to a stop or stopped at a traffic light however now it happens while driving at speed. I used to be able to let it rest for a few minutes then start it up again however now it doesn’t start again after hours.

I have changed the auto transmission fluid however that did not fix the problem.

Has anyone here experience similar issues? Any help is appreciated.

Thanks!

seanjordan20

Why did you change the transmission fluid for the car dying while running.

tonee

I thought it was a transmission problem. I needed fresh fluids anyway so no harm.
After some reading on the forums it seems like a common problem maybe from a faulty camshaft sensor. I really hope its simple as that!

donpb

It would help immensely if you could provide the BMW DTC codes.

seanjordan20

I don't know about it being a common failure. Part do go bad over time. Check you crankshaft sensor first to see if there is oil around it. You will know for sure by check the codes.