See also:

Important safety notes
WARNING The PARKTRONIC is a supplemental system. It is not intended to, nor does it replace, the need for extreme care. The responsibility during parking and other critical maneuvers alway ...

Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be trigg ...

Starting procedure with the SmartKey
To start the engine using the SmartKey instead of KEYLESS-GO, pull the Start/Stop button out of the ignition lock. To start a gasoline engine: turn the SmartKey to position 3 in the ignition lo ...