Lexus RX 450h 2012 Owner's Manual page 85

1-4. Adjustable components (seats, mirrors, steering wheel)
Active head restraints
Active head restraints
■
Even small forces applied to the seatback may cause the head restraint to move.
Pushing up a locked head restraint forcibly may appear the head restraint inner
structure. These do not indicate problems.
84
When the occupant' s lower back
presses against the seatback dur-
ing a rear-end collision, the head
restraint moves slightly forward
and upward to help reduce the risk
of whiplash to the seat occupant.
Inner
structure
During
rear-end
collision