Modern cars are fitted with with computers that monitor and run the major functions of the car. Each function has its own computer and each computer talks to each other. This series of networked computers is called an Electronic Control Unit or ECU for short. An ECU requires specialized diagnostics computers to diagnose & repair.
Diagnosing issues with a cars air bag system can be expensive and dangerous for someone without experience and the correct tools As they are designed to explode outward violently when disutrbed.
Call an expert
The Anti Lock Braking System or ABS is responsible for stopping your car as quickly and safely as possible and as such is something best left to the experts so you can be confident you can stop your car on time.
some electrical issues with ABS can also only be diagnosed with the proper equipment.