See also:

Problems with the SmartKey
Problem Possible causes/consequences and  Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged ...

Safety & Features
As of this writing, neither the National Highway Traffic Safety Administration nor the Insurance Institute for Highway Safety has tested the E-Class wagon. (IIHS has tested the E-Class sedan, but ...

Lights
Display messages about LEDs: This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and Solutions Check Left Cornering ...