you would be amazed...usally when they start to work on a car they disconnect the battery and the airbags then work on the car when finished they hook the battery up and start it OOPS! the srs light is on now to reset you use the MES connector with a jumper wire shorting the plug turn the key after 6 sec. the srs light will go out ,remove the jumper withn 4 sec. and the light will come back on again ,withn 4 sec of the light coming back on short the connector again the srs light will blink 2 times and and stay out...unless theres a problem then the light will come back on after the 2 blinks.