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:

    Cleaning the steering wheel and gear orselector lever
    ► Thoroughly wipe with a damp cloth or use leather care agents that have been recommended and approved by Mercedes- Benz. ...

    Releasing seat belts
    ► Press release button 4 and guide belt tongue 2 back towards belt sash guide 1. Make sure that the seat belt is fully rolled up. Otherwise, the seat belt or belt tongue will be trapped i ...

    Pedals
    WARNING Make sure absolutely no objects are obstructing the pedals' range of movement. Keep the driver's footwell clear of all obstacles. If there are any floormats or carpets in the footw ...