See also:

Driving safety systems overview
In this section, you will find information about the following driving safety systems: - ABS (Anti-lock Braking System) - BAS (Brake Assist System) - BAS PLUS (Brake Assist System Plus*) ...

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 ...

Changing the battery
You require a CR 2025 3 V cell battery. Take the mechanical key out of the SmartKey. Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...