The WHIPS system is actuated by a rear-end collision, where the angle and speed of the collision, and the nature of the colliding vehicle all have an influence.
The WHIPS system is a supplement to the seatbelts. Always use a seatbelt.
When the WHIPS system is deployed, the front seat backrests are lowered backward to change the seating position of the driver and front seat passenger. This reduces the risk of whiplash injury.
Never modify or repair the seat or WHIPS system yourself. Volvo recommends that you contact an authorised Volvo workshop.