See also:

Active front head restraints
In the event of a rear-end collision of sufficient severity, the active head restraint reduces the distance to the head. Reduced protective function ▷ Do not use seat or head restraint c ...

Switching on automatically
Select transmission position R with the engine running. The Top View and PDC images are displayed if the system is switched on via iDrive. ...

Functional readiness of the airbagsystem
When the ignition is switch on, the warning lamp in the instrument cluster lights up briefly and thereby indicates the operational readiness of the entire airbag system and the belt tensioner. ...