See also:

Deactivating/activating PARKTRONIC
To deactivate/activate PARKTRONIC Indicator lamp If indicator lamp 2 lights up, PARKTRONIC is deactivated. PARKTRONIC is automatically activated when you turn the SmartKey to position ...

Removing the mechanical key
Push release catch 1 in the direction of the arrow and at the same time, remove mechanical key 2 from the SmartKey. ...

Important safety notes
WARNING When leaving the vehicle, always remove the SmartKey from the ignition lock. Always take the SmartKey with you and lock the vehicle. Do not leave children unattended in the vehicle ...