Restraints and Safety Systems: Service Precautions

Safety precautions when working with airbag circuits
- Work on the components of the airbag system must always be carried out with the battery disconnected. Disconnect and cover the negative terminal of the battery. Before disconnecting any airbag it is essential to wait the recommended time:
- 30 minutes for vehicles up to 9/93
- 1 minute for vehicles from 9/93
- Components of the airbag system should only be checked when properly mounted and only using the measurement system of the DIS/MoDiC or a high quality, low impedance multimeter.
- Always disconnect the negative terminal of the battery when performing any welding or body work on the vehicle.
- When removing airbags temporarily they should be stored in the trunk, face-up, with the trunk lid closed.
- Components of the airbag system that have been dropped from more than 18 inches should not be installed in the vehicle.
- Never treat airbag components or connectors with cleaning agents or conductive grease.
- Airbags must not be thrown into the trash, but must be properly disposed of according to local regulations for hazardous materials. Airbags returned to BMW must be shipped back in the original packaging of the replacement part.
- Always dis-arm mechanical seat belt tensioners before working on a seat or removing/installing the tensioners. Do not forget to re-arm when finished.
- Always follow safety precautions in the TIS repair manual instructions.