See also:

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 th ...

Checking the battery
Press the or button. The battery is working properly if battery check lamp 1 lights up briefly If battery check lamp 1 does not light up briefly during the test, the battery is discha ...

Separate USB connection
In addition to the USB connection on the Media Interface, there is another USB connection in the glove box. This connection can also be used to play audio files. Electrical consumption at this ...