The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.Google+
Car Problem Reports
Mercedes-Benz C230 Brake Light Switch Failure May Cause ESP/BAS Warning Lights
Mercedes-Benz C230 Problem
Average Mileage: 120,714 mi (58,000 mi - 160,000 mi)
Visitor, 2002 Mercedes-Benz C230, 110,000 mi
esp light is on
I replaced the fuse.
Visitor, 2000 Mercedes-Benz C230, 108,000 mi
bas/esp kept coming on intermittently. replaced the brake light switch which should have resolved problem but it hasn't. Dealer has been trying to figure out why this hasnt worked for the last 4 months. Dealer now suggesting that the related control module unit is the problem. They have replaced it several times with no resolution.
Visitor, 2002 Mercedes-Benz C230, 126,000 mi
Visitor, 2002 Mercedes-Benz C230
do not see the switch on the brake pedal,only see the switch on the emergency brake.