See also:

Treadwear indicators
Narrow bars (tread wear bars) that are distributed over the tire tread. If the tire tread is level with the bars, the wear limit of 1/16 in (1.6 mm) has been reached. ...

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 ...

Charging the battery
WARNING Never charge a battery still installed in the vehicle unless a battery charger unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions tha ...