Changing the battery

You require a CR 2025 3 V cell battery.

SmartKey. Take the mechanical key out of the SmartKey.

Press mechanical key 2 into the opening

in the SmartKey in the direction of the 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.
terminal facing upwards. Use a lint-free Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.
free from lint, grease and all other forms of Make sure that the surface of the battery is free from lint, grease and all other forms of contamination.
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.
on the vehicle. Check the function of all SmartKey buttons on the vehicle.

    See also:

    Applying/releasing manually
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    Switching the windshield wipers on/ off
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    Warranty
    The Service and Warranty Information booklet contains detailed information about the warranties covering your vehicle. Your authorized Mercedes-Benz Center will exchange or repair any defective ...