See also:

Overview
The on-board computer is activated as soon as you turn the SmartKey to position 1 in the ignition lock. You can control the multifunction display and the settings in the on-board computer using ...

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 ...

Releasing seat belts
Press release button 4() and guide belt tongue 2 back towards belt sash guide 1. Make sure that the seat belt is fully rolled up. Otherwise, the seat belt or belt tongue will be trapped ...