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. - ...

Tread
The part of the tire that comes into contact with the road. ...

Problems with PARKTRONIC
Problem Possible causes/consequences and - Solutions Only the red segments in the PARKTRONIC warning displays are lit. You also hear a warning tone for approximately ...