Question on brakes and DSC - yes i have searched...

[andrewgrhogg]

OK - here's the latest on this.

If you recall the issue is that the anti-lock brakes kick in way to early and the DSC kicks in on corners when it should not. The car has air bags on all 4 wheels and the user-controlled suspension leveling.

I went thru two new front level sensors and three new controllers (the expensive part in the back that includes the computer and compressor) before it appeared to be "fixed". All this over about 4 weeks at the dealer, about 2 weeks ago.

Over the last week its been exhibiting the same symptoms, where the front left wheel is too low to the body (i.e. the gap between tire and wheel well is too small compared to the other side), and the brakes and dsc have been kicking in early. But no dash message.

Yesterday i start the car up and i get the "Self Leveling Suspension Inactive" message and its been there ever since. Now here is the interesting part.

The car now drives great. I can rocket around corners and accelerate from a stop into a turn and the car drives like a BMW should. It sticks to the road. I can slam on the brakes and be pitched forward into my belt without the anti-lock brakes coming on. The thing drives awesome.

So, what sensors are ignored when the car goes into this mode. Cause its those sensors (or the computers reaction to them) that are causing all the issues. Perhaps front wheel speed sensors - not sure if there is one on each wheel or not.


Any thoughts and insights welcome.