If your airbag light is flashing because something random might have happened while you were working on the car then you can follow the following process to reset the computer. Auto-Talk recommends taking the car to the dealer to avoid any injury. However sometimes you know that airbag light came on because of some random mistake and you do not want to pay $100 for a rest so this is what you can do.
Ignition Key Method:
1) Turn IGNITION on (but don't start car)
2) After the AIR BAG warning lamp lights for 7 seconds, turn IGNITION off within 1 second.
3) Wait 4 seconds
4) Turn IGNITION on (but don't start car)
5) After the AIR BAG warning lamp lights for 7 seconds, turn IGNITION off within 1 second.
6) Wait 4 seconds
7) Turn IGNITION on (but don't start car)
8) After the AIR BAG warning lamp lights for 7 seconds, turn IGNITION off within 1 second.
9) Wait 4 seconds
10) Turn IGNITION on (but don't start car)
11) Wait 3 seconds
12) Turn IGNITION off
13) Wait 2 seconds
14) START Car (the light may be blinking slower than before)
15) Wait 3 seconds
16) Turn IGNITION off
17) Wait 3 seconds
18) START Car
Using the Door Method:
Open the driver's door. Note the rubber covered button located low on the B pillar, a button which is pressed by the door when the door is closed. This is the Driver's Door Switch (DDS).Turn the ignition from OFF to ON. Press the DDS at least 5 times within 7 seconds after turning the ignition switch ON. Turn the ignition OFF. Close the driver's door. Start the engine.