Airbag lights stay on until the problem is fixed. Resetting the light does not stop it from coming on again when the car starts. Airbag lights can indicate a range of problems, and many of these can cause the airbag to not deploy if the car crashes.
Airbags produce a high level of force when released to ensure that they are set as quickly as possible. As a result, improper deployment can cause a host of injuries, particularly if a piece of shrapnel is involved. Car owners who notice that the airbag light stays on should have their car investigated promptly to ensure safety in case of an accident.