I too am now getting the BAS/ESP light as soon as I touch my brake pedal upon starting. I have read in past posts that it might be fixed with adjustment of the brake switch. OK, where is it and how adjusted? Any other ideas from those of you who are well educated in this problem?
2001 SLK 230.
Thank you in advance!

 

on the brake pedal bracket

pull it up to reset

 

Thanks!! I'll try it after I get off work.

 

Sleepwalker,
OK, I tried your fix and found the switch to be fixed in place. I can take it out but no adjustment to its positioning or with the contact point on the brake pedal extension is possible.
I hope I am not completely retarded in what you were telling me to do. I am mechanically inclined but unable to find any way to resolve this problem. Any help possible, THANKS!

 

you need a guide. here it is>>>>>>>>

[IMG]local://upfiles/1/19DDC2D2E3B34280A8619D5214A14774.jpg[/IMG]

 

I finally got around to adjusting the switch. IT WORKED!!
Thanks a million, now my cruise control works.

 

 

OK Sleepwalker,
Your fix worked great until now. The darn light comes on about 20% of the time when the brake is applied. There does not appear to be any common environmental conditions causing it, such as temperature, etc. Just comes on ever-so-often. Any ideas? Time to replace the stinking thing?

 

time to read the fault code.

it can be a steering angle sensor, bas control module, or the brake lamp switch.