Checking the battery

Press the or

button. Press the button. or button.
The battery is working properly if battery check lamp 1 lights up briefly

If battery check lamp 1 does not light up briefly during the test, the battery is discharged.

You can obtain the battery at a qualified Changing the battery.

specialist workshop. You can obtain the battery at a qualified specialist workshop.

the signal reception range of the vehicle, If the SmartKey battery is checked within the signal reception range of the vehicle, pressing the button locks or or unlocks the vehicle. button locks or unlocks the vehicle.

    See also:

    Notes for 4MATIC vehicles
    Vehicles with 4MATIC must not be towed with either the front or the rear axle raised, as doing so will damage the transmission. If the vehicle has transmission damage or damage to the front or ...

    Problems with PARKTRONIC
    Problem Possible causes/consequences and - Solutions Only the red segments in the PARKTRONIC warning displays are lit. You also hear a warning tone for approximately ...

    Trailer load/noseweight
    The trailer load/noseweight affects the gross weight of the vehicle. If a trailer is attached, the trailer load/noseweight is included in the load along with occupants and luggage. The trailer loa ...