Air bag systems represent a necessary safety feature that is designed to help keep both driver and passengers safer in the event of a collision. The problem is that many things, from small 5mph collisions to moderate damage due to inanimate objects, can cause problems with the air bag system.
Even if the airbag does not deploy, it may fall victim to circuit faults and other undesirable conditions that could lead to its inability to operate, which in turn leads to a significantly less safe vehicle than you should have.
In the event that safety is not your concern, components related to the air bag system can cause problems. Items like the clock spring found in most steering wheels can cause electrical malfunctions that can lead to everything from check engine lights (CELs) to the eventual malfunction of the ECU, which is the vehicle’s electronic brain.