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:
Important safety notes
WARNING
Only use roof racks approved by Mercedes-Benz for your vehicle model to avoid
damage
to the vehicle.
Follow the manufacturer's installation
instructions. Otherwise, an improperly
a ...
Using the main loudspeakers
This function is available in conjunction with
COMAND.
You can use the vehicle loudspeakers to
listen to a disc inserted in the rearcompartment
drive. To do so, at least one of
the rear-compa ...
Components and storage
The EASY-PACK load-securing kit allows you
to use your cargo compartment for a variety
of purposes. The accessory parts are located
under the trunk floor.
– Open the trunk floor.
EASY-PACK ...
