Changing the battery

You require a CR 2025 3 V cell battery.

the Take the mechanical key out of the SmartKey.

Press mechanical key 2 into the

opening 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. Repeatedly tap the SmartKey against your palm until battery 3 falls out.
positive terminal facing upwards. Use a lint-free cloth to do so. Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.
battery is free from lint, grease and all other forms of contamination. Make sure that the surface of the battery is free from lint, grease and all other forms of contamination.
tray cover 1 and then press to close it. Insert the front tabs of battery tray cover 1 and then press to close it.
SmartKey. Insert the mechanical key into the SmartKey.
buttons on the vehicle. Check the function of all SmartKey buttons on the vehicle.

    See also:

    Setting the side air vents
    To open/close: turn thumbwheel 3 up or down. Side window defroster vent 1 is never completely shut, even if side air vent 2 is shut. ...

    MB Info call button
    •► Press and hold MB Info call button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in MB Info call button 1 fla ...

    Important safety notes
    WARNING To help avoid personal injury during a collision or sudden maneuver, exercise care when storing objects in the vehicle. Put luggage or cargo in the cargo compartment if possible. Do n ...