Safety Belt Buckle Pretensioners
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
As part of the supplemental restraint system (SRS), the driver and front passenger safety belt buckles are equipped with pretensioners. The safety belt buckle pretensioners are pyrotechnic devices integrated to the driver and passenger safety belt buckle assemblies. The safety belt buckle pretensioners remove excess slack from the safety belt webbing. The pretensioners are activated by the RCM when the module detects a crash event force exceeding a programmed limit.