See also:

Issued warning
If you leave the lane and if a lane marking has been detected, the steering wheel begins vibrating. If the turn signal is set before changing the lane, a warning is not issued. ...

Backrest width
Change the width of the backrest using the side wings to adjust the lateral support. To make it easier to enter and exit the vehicle, the backrest width temporarily opens fully. ...

Functional readiness of the airbag system
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 tensione ...