Roll-Over Protection System - Volvo XC90 User Manual

2005 VOLVO XC90
WARNING!
The IC system is a supplement to the Side Impact Protection System. It is not designed to deploy
during collisions from the front or rear of the vehicle. The Inflatable Curtains are designed to deploy
only during certain side-impact collisions, depending on the crash severity, angle, speed and impact.
The Inflatable Curtains are not designed to deploy in all side impact situations.
Never try to open or repair any components of the IC system. This should be done only by an
authorized Volvo service technician.
In order for the IC to provide its best protection, both front seat occupants and all outboard rear seat
occupants should sit in an upright position with the seat belt properly fastened; adults using the seat
belt and children using the proper child restraint system. Only adults should sit in the front seats.
Children must never be allowed in the front passenger seat. See
follow these instructions can result in injury to the vehicle occupants in an accident.
When the backrest(s) in the rear seat(s) are folded down, the vehicle should not be loaded to a level
higher than 2 inches (5 cm) below the upper edge of the side windows. Objects placed higher than
this level could impede the function of the Inflatable Curtain.
pg. 15 Safety

Roll-over Protection System

Volvo's Roll-over Protection System has been developed to help prevent the vehicle from rolling over in
the event of sudden evasive maneuvers, skids, etc and to offer enhanced protection if a roll-over occurs.
The system works in two ways:
The stabilizing system Roll Stability Control (RSC) acts to minimize body roll.
The system provides additional protection with a reinforced body, Inflatable Curtains for all outboard
seating positions, and seat belt pretensioners for all seating positions.
RSC uses a gyro-sensor that registers the vehicle's angle of inclination and the speed at which this angle
changes. Using this information, the control module calculates the risk of a roll-over. If there is an
imminent roll-over risk, the Dynamic Stability and Traction Control (DSTC) system is activated, engine
speed is reduced, and the brakes are applied to one or more of the wheels until the vehicle has regained
stability.
If a roll-over occurs, RSC triggers the seat belt pretensioners and then deploys the Inflatable Curtains
(which remain inflated for approximately 5 seconds). These curtains are designed to follow the contours
of the side windows so that they position themselves between the occupants' heads and the sides of the
vehicle.
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