Service Precautions

WARNING: This page is about a different car, the 1996 BMW 840Ci. However, it is still accessible from the selected car via links, so may be relevant.

Observe these precautions when working on SRS:

When working around steering column and before any repairs are performed, disable SRS. See procedures under DISABLING & ACTIVATING AIR BAG SYSTEM .
Always ensure radio is off before disconnecting battery. This will prevent damage to radio microprocessor.
Before straightening damaged metal or arc-welding, disable SRS and disconnect front sensors. See procedures under DISABLING & ACTIVATING AIR BAG SYSTEM .
After disabling SRS, wait at least 10 minutes before servicing vehicle. SRS control unit maintains SRS voltage for about 10 minutes after system is disabled. Servicing SRS before 10 minutes may cause accidental air bag deployment and possible personal injury.
Always wear safety glasses and gloves when handling a deployed air bag module. Air bag module may contain sodium hydroxide deposits, which irritates skin.
Handle sensors carefully. Never strike or jar sensors. All sensors and mounting bracket bolts must be tightened to specification to ensure proper sensor operation. See the TORQUE SPECIFICATIONS table.
Never use any SRS component that has been dropped from 2 feet or higher.
To avoid air bag deployment when trouble shooting SRS, DO NOT use self-powered electrical test equipment, such as battery- powered or AC-powered voltmeter, ohmmeter, etc. DO NOT repair any part of SRS wiring harness.
Always handle air bag module with trim cover away from your body. Always place air bag module on workbench with trim cover up, away from loose objects.
Never expose SRS components to temperatures greater than 212°F (100°C).
Never expose any SRS system components to cleaning agents such as solvents, gasoline, lye, etc.