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 tha ...

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 ...

Cleaning the sensors
  Clean sensors 1 of the driving systems with water, car shampoo and a soft cloth. When cleaning the sensors with a power washer, maintain a distance between the vehicle and the nozzl ...