Seat Belt Switches

The Seat Belt Switches are located in the seatbelt buckles of the driver and passenger seat belt. The switch is a two wire hall switch and is supplied with voltage by the respective left and right B-Pillar satellites (SBSL/SBSR). The voltage is pulsed to the switch to reduce voltage consumption.

The seat belt switches are used to detect whether or not the seat belts have been fastened. The input from the switches is required for the following functions:

• Selective triggering of actuators in the event of a crash
• Activation of the Seat Belt Warning Lamp
• Out of the acoustic warning