Hello, I drive a SLK R170 and also have the problem with the sporadic light on the BAS/ASR warning light in the cockpit. PROBLEM DESCRIPTION: I start the car and the warning light lights up. If I turn off the engine now while driving and then switch on again, the warning light goes off. As soon as my car comes to a stop at the next traffic light, however, the BAS/ASR lamp goes directly on again. But as I said, the problem is sporadic. Sometimes the lamp also stays out, od It doesn’t even start at all. FIRST REPARATURE MEASURE: I changed the brake light switch during the Christmas days, but without success. By the way, the car did not require any recalibration afterwards. The lamp stayed out after the first ride and only lit up two days later. FEHLERPROTOKOLL: After that, I went to the Bosch Service Center to read out the fault memory. On the error log, the rear brake sensor on the left and the rear brake sensor on the left side of the brake. PROBLEM SEARCH: I find it strange that according to the protocol, both sensors should have failed at the same time and then also function at the same time, and then fail again at the same time. So, according to all logic, this is highly unlikely. I am also surprised that both sensors should always fail at the rear (i.e. left and right wheel sensor) at the same time. Especially since the ABS / ESP Lame is extinguished when I use the car during d After this action, the lamp will only turn on again when the car comes to a complete standstill, i.e. before a red traffic light. Is there possibly still a sensor on the gearbox that could trigger the error message if necessary? Maybe a corroded plug etc.? Every now and then I have heard of reasons like the car battery or the transverse acceleration sensor? If this had to be displayed in the error protocol! So, I This is why I ask for your expertise. Who knows the problem and knows advice or has a schematic that could bring clarity if necessary? Opinions, help, tips etc. – I am grateful for everything. In this sense best regards from Frankfurt am Main, Jens.