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 tensioner.
Airbag system malfunctioning
▷ Warning lamp does not come on when the ignition is turned on.
▷ The warning lamp lights up continuously.
When there is a malfunction,
have the airbag
system checked immediately
When there is a malfunction, have the airbag system checked immediately; otherwise, there is a risk that the system does not function as expected in the event of an accident despite corresponding severity of the accident.
See also:
General information
1. Turn the controller: select letters or numbers.
2. Select additional letters or numbers if
needed.
3. "OK": confirm the entry.
...
Before driving into a car wash
In order for the vehicle to be able to roll into a car
wash, heed the information regarding Washing
in automatic car washes ...
Safety
Both the coupe and convertible have front airbags plus side-impact airbags
built into the front seats. As required of all 2012 models sold in the U.S., the
640i has standard antilock brakes and an ...
