Seat Belt Contacts
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2000 BMW Z3, 2000 BMW 328i, 2000 BMW 323i, 1999 BMW Z3, and 1999 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Seat belt contact sensors are used to signal SRS control unit. Both front seat belt latch assemblies are equipped with micro-switches. SRS control unit utilizes switched ground input signal to determine seat belt status. Not all vehicles are equipped with this system.