BMW 2006 M3 Owner's Manual page 54

Airbags
54
This is the right way a larger child
should sit wearing the seat belt when
rear side airbags are provided.
Indicator lamp
The indicator lamp indicates the
operational status of the airbag
system when the ignition key is
in position 1 or higher.
System operational:
> The indicator lamp comes on briefly
when the ignition key is turned to
position 1 or higher.
System malfunction:
> Indicator lamp does not come on or
> indicator lamp lights up continuously.
If there is a system malfunction,
there is a risk that the airbags will
not be triggered within their normal
response range, even if the level of
impact would normally have triggered
them. Have your BMW center inspect
the airbag system immediately.<
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