I have a problem with the cruise control automatically disengaging and the ABS, BAS/ESP warning lights coming on. Took to the shop and they replaced a multi-function switch located behind the gas pedal. Car worked fine for about 4 days then the symptom came back. Took back to shop 3 days ago and they are having difficulty identifying the underlying problem. It appears that when the engine is turned off, the computer reboots itself and the car runs fine for a while but eventually, at totally random intervals, the problem will come back. Any ideas as to the underlying problem? Thanks.

Are all 4 tires exactly the same circumference??

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

yes, had four new tires put on about 3 months ago

The brake lamp switch comes to mind.

I didn't ask if they were new, BUT since you brought that UP...is that when the problem started?

Just because they are new doesn't mean that the circumferences are all with-in 1/4"

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

they are new tires but the problem started two weeks ago