See also:

Emergency braking
The vehicle can also be braked during an emergency using the electric parking brake. While driving, push handle 1 of the electric parking brake. The vehicle is braked as long as you keep the ...

Mercedes-Benz M-Class Owners Manual
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Center console, upper section
1 Audio system/COMAND; see the separate operating instructions 2 Seat heating 3 Seat ventilation 4 PARKTRONIC 5 Downhill Speed Regulation (vehicles without AIRMATIC package) 6 Hazard war ...