Kia Optima: Air Bag Warning LightThe purpose of the air bag warning light in your instrument panel is to alert you of a potential problem with your Air Bag - Supplemental Restraint System (SRS).
Have the system checked if:

The Importance of the Passenger Being Properly Seated
Supplemental Restraint System ServiceTrunk Lid Knob Lock
If the trunk lid lock knob (located near the latch) is in the “LOCK” position
when the trunk lid is closed, it will not be possible to open the trunk lid by using
the remote release. In this ...
Power windows
The ignition switch must be in the ON position for power windows to operate.
Each door has a power window switch that controls the door's window. The driver
has a power window lock switch whic ...
Interior Trim. Repair procedures
Replacement
Door Scuff Trim Replacement
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Put on gloves to protect
your hands.
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...