No, thank you! I managed to solve another electrical problem as well thanks to this great website (BMW WDS).

The driver door didn’t work, or well only my window and side mirror did. I couldn’t control the passengerside window or mirror. The central lock didn’t work either (only on the other doors).

So the door had no connection from the door to the general module, meaning a problem with the P-BUS. I managed to find the pins by looking through BMW WDS, so I could measure the resistance from the wire in the door – yeah it was broken, so I installed a new wire and now everything works again!

I’ve been dealing with a ASC/DSC problem for a long time. My car is a BMW E39 520i from 1996 (December).

I had my car scanned with INPA and it showed a fault on the left front speed sensor. I replaced it, but the problem persisted. I then measured the resistance through the speed sensor as well as the resistance through ASC/DSC unit. No problems.

Now only two things could be wrong. I was 100% sure it was my ASC/DSC unit which was faulty, but getting a new (used) one would be quite expensive (I live in Europe). I instead got a new left wheel bearing and replaced that first. Solved the problem!

The magnetic ring in the bearing had somehow become damaged. So the first sensor I replaced was actually working. It was just destroyed when it was removed, because it had never been removed before.

So, I just wanted to say that remember that it’s also very probable that there might be something wrong with your wheel bearing. So check the resistance/wires also!