Nissan X-Trail e-POWER 2023 Owners Manual
4.5.2.2. Supplemental side-impact air bag system
The supplemental side-impact air bag is located at the outside of the front seats’ seatbacks.
The supplemental side-impact air bag system is designed to inflate in higher severity side collisions, although it may inflate if the forces in another type of collision are similar to those of a higher severity side impact. It may not inflate in certain side collisions. Vehicle damage (or lack of it) is not always an indication of proper supplemental side-impact air bag system operation.
Owners Manual