The most common cause of the SRS light in your car is a bad sensor. You could have a faulty seat belt latch sensor or a bad passenger seat sensor. Corrosion in the sensors or connectors will also cause the light to come on. In rare cases, the SRS control unit will go bad. A bad control unit requires either reprogramming or replacement. Make sure that you have an experienced mechanic perform the repair to get your airbag system working properly again.