B-Pillar Sensors

WARNING: This page is about a different car, the 2003 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM. Disengage clips and carefully remove appropriate door scuff plate.
Release door seal at rear trim panel. Carefully pull downward on rear trim panel and remove. Unlock and disconnect B-pillar sensor harness connectors. See Fig 1 . Remove 3 mounting screws and remove sensor in direction of arrow.
To install, reverse removal procedure. Tighten B-pillar sensor mounting screws to specification. See TORQUE SPECIFICATIONS . Perform appropriate coding/programming using proprietary BMW DIS tester. Activate air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM .

Fig 1: Identifying Left B-pillar Sensor

Courtesy of BMW OF NORTH AMERICA, INC.