Grand Marquis V8-4.6L VIN V Flex Fuel (2006)
Seat Belt Tensioner: Description and Operation
Safety Belt System
SAFETY BELT PRETENSIONERS
The front outboard safety belt retractors use a safety belt pretensioner system. This works in conjunction with the front air bag system mounted in the
steering wheel and instrument panel. The pretensioner is a pyrotechnic device that removes excess webbing slack from the safety belt. When the front air
bags are deployed, the pretensioner deploys in the retractor, removing excess slack from the lap and shoulder safety belt. The pretensioners are activated
when the restraints control module (RCM) detects a frontal impact force exceeding a programmed limit. If the vehicle is involved in a collision that
results in deployment of the front air bags and safety belt pretensioners, a new driver and passenger seat belt system (including safety belt buckle and
pretensioners or safety belt retractor and pretensioners, safety belt retractors, safety belts, buckles and height adjusters), must be installed.
