2010 Mercedes E-Class Owner's Manual - Page 267

What to do if ... Problem å The yellow ESC OFF warning lamp comes on while the engine is running. Possible causes/consequences and M Solutions The ESC has been switched off. Risk of accident! When the ESC is switched off it will not stabilize the vehicle if the system recognizes that the vehicle starts to skid or that a wheel is spinning. X Switch the ESC back on. Exceptions: (Y page 62). X If leaving the ESC switched off, adapt your speed and driving to the prevailing road and weather conditions. X If the ESC cannot be switched back on: Have the system checked at an authorized Mercedes-Benz Center as soon as possible. The ESC is not operational due to a malfunction. The ABS, the BAS, the BAS PLUS, the hill-start assist system, the HOLD function, the PRE-SAFE® system, and the PRE-SAFE® Brake are also switched off. The brake system is still functioning normally but without the systems specified above available. The ATTENTION ASSIST is disabled. X Read and observe additional messages that may appear in the multifunction display. X Continue driving with added caution. Wheels may lock during hard braking, reducing steering capability. X Adapt your speed and driving to the prevailing road and weather conditions. X Have the system checked at an authorized Mercedes-Benz Center as soon as possible. Failure to follow these instructions increases the risk of an accident. The ESC or the ETS has come into operation because of detected traction loss in at least one tire. X When driving off, apply as little throttle as possible. X While driving, ease up on the accelerator pedal. X Adapt your speed and driving to the prevailing road and weather conditions. X Do not deactivate the ESC. Exceptions: (Y page 62). Failure to follow these instructions increases the risk of an accident. 265 ä The yellow ESC å warning lamp and the yellow ESC OFF warning lamp come on while the engine is running. ä The yellow ESC warning lamp flashes while driving. Z Practical hints