E 350 V8-5.4L (2008)
Seat Belt Buckle: Description and Operation
SAFETY BELT BUCKLES
Front Safety Belt Buckle and Pretensioner
The safety belt buckle and pretensioner is a pyrotechnic device that removes excess webbing from the safety belt when deployed. The pretensioner
works in conjunction with the front air bag system. When the pretensioners deploy, this causes the buckle to move downward, removing excess
webbing from the lap and shoulder safety belts.
If the vehicle is involved in a collision that results in deployment of the safety belt pretensioners, a new driver and passenger safety belt system
(including safety belt buckle and pretensioners, safety belt retractors and height adjusters) must be installed.
For safety belt buckle and pretensioner diagnostic information, refer to Air Bag Systems.
For safety belt buckle and pretensioner disposal information, refer to Air Bag Systems.
Rear Safety Belt Buckles
The rear bucket seat safety belt buckles are mounted to the seat cushion frames and are serviceable in-vehicle.
The rear bench seats are equipped with a dual safety belt buckle assembly used for the center and RH seat positions on the 3-passenger bench and both
center seat positions on the 4-passenger bench. The rear safety belt buckles are mounted to the seat cushion frame. The LH safety belt buckle on the
rear 3-passenger bench seat is part of the center safety belt retractor and is not serviced separately. To remove the LH safety belt buckle on the rear
3-passenger bench seat, refer to Safety Belt Retractor - Rear, Center, 3-Passenger Bench Seat. The outboard safety belt buckles on the rear
4-passenger seat are part of the safety belt retractors and are not serviceable. To remove the outboard safety belt buckles on the rear 4-passenger seat,
refer to Safety Belt Retractor - Rear, Center, 4-Passenger Bench Seat.
