Copied:
For the airbag light you need to fit the bulb back in then use the M.E.S connector to erase the fault , resetting the ecu does not erase SRS codes.
Undo your lower kick panel , under your steering wheel , find the fuse panel .
There will be a 2pin plug with a yellow lead plugged in it , take it out.
Then with a metal paper clip :
* Ignition off ~ bridge the 2 pins with the paper clip
* Ignition on ~ SRS light will come on for 6 secs. then go off
* Within 4 secs of the light going out , unbridge the 2 pins with the clip , SRS light will come back on.
* Within 4 secs of the light coming back on , bridge the 2 pins again , SRS light will go off.
* Within 4 secs. of the light going off , unbridge the 2 pins again , SRS light blinks twice.
* Ignition off , wait 10 secs , and badabing badaboom the light is sorted
But it will only work if the original cause of the fault is rectified