Cadillac 2005 DeVille - Manual (Page 162)

If the airbag readiness light stays on after you start the
vehicle or comes on when you are driving, your
airbag system may not work properly. Have your vehicle
serviced right away.
{ CAUTION:
If the airbag readiness light stays on after you
start your vehicle, it means the airbag system
may not be working properly. The airbags in
your vehicle may not inflate in a crash, or they
could even inflate without a crash. To help avoid
injury to yourself or others, have your vehicle
serviced right away if the airbag readiness light
stays on after you start your vehicle.
The airbag readiness light should flash for a few
seconds when you turn the ignition key to ON. If the
light does not come on then, have it fixed so it will
be ready to warn you if there is a problem.
Charging System Light
When you turn the key to
ON or START, this light will
come on briefly to show
that the generator and
battery charging systems
are working properly.
If this light stays on, you need service and you should
take your vehicle to the dealer at once. To save
your battery until you get there, turn off all accessories.
See DIC Warnings and Messages on page 3-60 for
more information.
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