I have an E39 530i Sport with the High OBC. When starting up the car the airbag check light does not illuminate. I have performed the lamp test, which is number 2 in the test regime. All the other lights illuminate except for the airbag one.
Am I right in assuming then that this means its just the bulb that is actually defective. The instruction manual states that if the light does not come on when turning ignition to position 1 then the system is defective.