See also:

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. ...

Interior motion sensor
The windows and glass sunroof must be closed for the system to function properly. ...

Controls
Controls 1 Display screen 2 Infrared interface for headphones 3 CD/DVD player 4 Headphone connection: jack plug 5 12 V sockets ...