Description And Operation: Description: PRETENSIONERS
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
A pyrotechnic pretensioner is integrated into each seatbelt retractor. The pretensioners are used to tighten the seatbelts during a collision to ensure the occupants are securely held in their seats.
When operated by the RCM, the pretensioners rotate the spool holding the end of the webbing to tighten the seatbelt.