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 tray cover 1 opens. When doing so, do not hold cover 1 shut.
- Remove battery tray cover 1.

- Repeatedly tap the SmartKey against your palm until battery 3 falls out.
- Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.
- Make sure that the surface of the battery is free from lint, grease and all other forms of contamination.
- Insert the front tabs of battery tray cover 1 and then press to close it.
- Insert the mechanical key into the SmartKey.
- Check the function of all SmartKey buttons on the vehicle.
See also:
Service for recovering a stolen vehicle
If your vehicle has been stolen:
► Notify the police.
The police will issue a numbered incident
report.
► This number will be forwarded to the
Mercedes-Benz Customer Assistance
C ...
Parking the vehicle for a long period
If you leave the vehicle parked for longer than
four weeks, the battery may be damaged by
exhaustive discharge.
Connect a trickle charger.
You can obtain information about
trickle
chargers ...
Instrument cluster
Selecting the unit of measurement for
distance
The Display Unit Speed-/Odometer: function allows you to choose
whether
certain displays appear in kilometers or miles.
The selected unit of meas ...
