clb0099

So I been getting this error light since I owned the 2007 Mercedes s550. I changed all the speed sensors already but this seems more related to it not being able to communicate with the brake system. Any help would be great.

Plutoe

take the car to any dealer as the control unit i believe is covered under a mb warantee

clb0099

I did and Benzel Busch Mercedes dealership said no warranty.. could it be the brake light switch?

EasyPhil

You need a Star Diagnostic system to correct this...You start with initiating the road test procedure which should clear it. If it doesn't, re-calibrate the BAS unit followed by the road test procedure.

I created a thread about this

clb0099

Phil… I tried this but I am either slow lol or just can’t do it correctly

EasyPhil

You have to follow the instructions precisely and having the car in a remote location with no traffic helps.