Belt Tension Sensor (BTS)
WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
The safety BTS is part of the passenger front outboard safety belt and retractor assembly and is not serviced separately. The safety BTS is located at the safety belt anchor point and operates as part of the Occupant Classification Sensor (OCS) system on the front passenger seat. To diagnose the BTS or OCS system, refer to SUPPLEMENTAL RESTRAINT SYSTEM .