kvuj

Hello everyone!

I would like to request some help trying to repair my BMW. It recently stopped starting (no crank, though I hear the fuel pump) et I decided to change the starter thinking it was the issue (it was very old and I should have changed it anyway). It turns out that it wasn't the problem because there is still no crank.

Using INPA, I get a few errors including a very unhelpful one (A0B4). I have confirmed that the brake pedal is correctly detected as down in the CAS diagnostics. I recorded a video of me trying to start the car with the voltages values from the CAS diagnostic page.
I am starting to suspect a flaky cable between the relay and the starter.

Battery is very healthy and fully charged (and paired when installed).

Any help would be welcome

kvuj

To anyone who encounters this in the future: it was a bad ground between the engine block and the chassis. The braided cable was extremely oxidized.

seanjordan20

A common overlooked item. Glad you figured it out and thanks for posting the resolution