Brake Light Switch Failure May Cause ESP/BAS Warning Lights on Mercedes-Benz C240

The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.

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Average mileage: 97,611 (39,500–175,000)
5 model years affected: 2001, 2002, 2003, 2004, more2005
18 people reported this problem
8 people shared problem details
Where is location of brake ligth switch on mercedes bez c240 2001 model
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ABS, ESP, BAS warning lights come on constantly, car goes in to limp mode. ABS module has been replaced twice. Still having the same problem. Bought the car new in 2001 C240. It's been a lemon.
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esp and bas malfunction lights come on at will, then reset when car shut off. Sometimes, this does not happen for weeks, then almost everyday, then is stops again for long periods.
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Brake light switch no warking
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I had the BAS, ESP lights come on. Cruise had stopped working, also sometimes the car had stopped shifting gears when in drive, it would take a a few seconds after being put into drive for the throttle to kick in. And finally it used to jerk sometimes right after engaging into reverse or drive. The culprit for all this was the brake (stop) light switch. A simple enough replacement, not that expensive and everything seems to be fine now! Your friendly dealer should be able to take care of it for you. Mine charged me 80 bucks. But if you want to do it yourself use this https://www.youtube.com/watch?v=AWjIZBuPLZ0
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The ABS, ESP, and the BAS indicators are on and the car will not come out of park
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Esp warning light on
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The problem was actually on our E320 4Matic wagon but, it was the same reported issue. One important thing to tell the repair shops is that the cruise control doesn't work along with the warning lights. This helped to point them in the direction of that switch - as it controls the cruise control when you step on the brake, switching off the cruise control.
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