2006 Subaru B9 Tribeca Owner's Manual - Page 29

Seat, seatbelt and SRS airbags 1-5 Active head restraint Each active head restraint is effective only when its height is properly adjusted and the driver/ passenger sits in the correct position on the seat. If your vehicle is involved in a rear-end collision, have an authorized SUBARU dealer inspect the active head restraints. The active head restraints may not operate in the event the vehicle experiences only a slight impact in the rear. The active head restraints may be damaged if they are pushed hard from behind or subjected to shock. As a result, they may not function if the vehicle suffers a rear impact. Lumbar support 100089 100356 The front seats of your vehicle are equipped with active head restraints. They automatically tilt forward slightly in the event the vehicle is struck from the rear, decreasing the amount of rearward head movement and thus reducing the risk of whiplash. For maximum effectiveness the head restraint should be adjusted so that the center of the head restraint is closest to the top of the occupant's ears. Pull the lever forward or backward. Pulling the lever forward will increase the amount of support for your lower back.