See also:

Capacities
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Operational readiness of airbag system
Operational readiness of airbag system In the radio ready state and beyond the warning lamp comes on briefly to indicate that the entire airbag system and the belt tensioners are operational. ...

Switching on/off directly
1. "Settings" 2. "Climate" 3. "Activate parked-car vent." The symbol on the automatic climate control flashes if the system is switched on. ...