2003 Mercedes C-Class Owner's Manual - Page 256

Practical hints What to do if ... What to do if ... Lamps in instrument cluster General information: If a bulb in the instrument cluster fails to light up during the bulb self-check when Possible cause The yellow ESP warning lamp lights up while driving. turning the SmartKey in the starter switch to position 2, have it checked and replaced if necessary. Suggested solution Problem v The ESP is deactivated. Risk of accident! Turn the ESP back on ( page 75). Adapt your speed and driving to the prevailIf the ESP cannot be turned back on, have ing road conditions. the system checked at an authorized Mercedes-Benz Center as soon as possible. The ESP or traction control has come into operation because of detected traction loss in at least one tire. When driving off apply as little throttle as possible. While driving ease up on the accelerator. Adapt your speed and driving to the prevailing road and weather conditions. Do not deactivate the ESP. Exceptions: ( page 75). Failure to follow these instructions increases the risk of accidents. v The yellow ESP warning lamp flashes while driving. 256