The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.
Car Problem Reports
Mercedes-Benz SLK230 Brake Light Switch Failure May Cause ESP/BAS Warning Lights
Mercedes-Benz SLK230 Problem
Average Mileage: 84,811 mi (70,000 mi - 112,000 mi)
Visitor, 2003 Mercedes-Benz SLK230, 112,000 mi
car brakes too right side and esp/bas light comes on