See also:

Overhead control panel
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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. ...

Switching off the manual drive program
Vehicles with the dynamic handling package: press the program selector button. M is no longer shown in the multifunction display. AMG vehicles: turn the drive program selector until C, ...