Operation
The RollTek system, when used with seat belts, provides additional protection to the driver and passenger (if equipped with a passenger-side system) in rollover accidents. The RollTek system provides a significant increase in seat stability during a rollover. Vehicles equipped with RollTek rollover protection have a sensor mounted in the seat base that activates the side-roll air bag and seat pull-down device during a rollover.
When the RollTek module senses a rollover, the module triggers gas cylinders mounted in the base of the seat. The gas cylinders activate the power cinches that then tighten the lap and shoulder belts against the occupant of the seat and lower the seat suspension, moving the occupant down and away from the steering wheel and ceiling. The side-roll air bag deploys from the outboard side of the seat as the seat is pulled down to its lowest position. See Fig..
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Side-roll air bag contained in seat.
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Side-roll air bag deployed.
Fig. 1, Side-Roll Air Bag
Warning: Always use the seat belts when operating the vehicle. Failure to do so can result in severe personal injury or death. Do not place infants and children in seats equipped with the RollTek system. The RollTek system is designed for adults only. Doing so could result in severe bodily injury or death. Keep all heavy objects in the cab secured. Do not place objects on the seat back or block the side-roll air bag. Objects that block the side-roll air bag may prevent proper inflation and could result in serious injury or death.
The RollTek system will activate during a rollover even if the seat belts are not fastened, but the RollTek system is only designed to provide protection to the occupant when the seat belts are fastened.
For vehicles with the RollTek system(s) only, device(s) deploy as follows:
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Rollover Crash—occupant seat belt pretensioning, seat pretensioning, and side-roll air bag at the proper time
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Frontal Crash—no devices deployed
For vehicles with the RollTek system(s) and frontal steering wheel air bag, device(s) deploy as follows:
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Rollover Crash—occupant seat belt pretensioning, seat pretensioning, and side-roll air bag at the proper time
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Frontal Crash—steering wheel air bag, occupant seat belt pretensioning, seat pretensioning, and the side-roll air bag at the proper time