General notes

If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged.

•► Check the battery in the SmartKey and replace it if necessary.

•► Unlock the driver's door using the mechanical key.

•► Lock the vehicle using the mechanical key.

•► Have the starter battery and the battery contacts checked at a qualified specialist workshop.

If the SmartKey is faulty, contact Roadside Assistance or a qualified specialist workshop.

    See also:

    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 ...

    Opening
    Switch off the engine. Remove the SmartKey from the ignition lock. KEYLESS-GO: open the driver’s door. This switches the ignition to position 0, which corresponds to having removed the Sma ...

    Unlocking and opening doors from the inside
    Only open the door when the traffic situation permits. If the vehicle was previously locked with the SmartKey or with KEYLESS-GO, opening the vehicle from the inside will activate the antitheft ala ...