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Safety and Security
Occupant safety
Active head restraints
The active front seat head restraints are in-
tended to offer the driver and front passen-
ger increased protection from whiplash
type injuries in rear-end collisions. In the
event of a rear-end collision exceeding the
systems’ deployment threshold, the active
head restraints on the driver’s and front
passenger’s seats are designed to move
forward in the direction of travel, providing
the head with increased support earlier on
in the collision sequence. The active head
restraints activate whether the seat is oc-
cupied or not.
You cannot remove the active head re-
straint on the driver’s and front passen-
ger’s seat.
For removal of the active head restraints
we recommend that you contact an
authorized Mercedes-Benz Center.
For information on head restraint adjust-
ment, see “Seats” (
୴ page 39).
For information on resetting the activated
active head restraints, see “Resetting acti-
vated head restraints” (
୴ page 424).
Warning! G
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as
close to the head as possible and the center
of the head restraint supports the back of
the head at eye level. This will reduce the
potential for injury to the head and neck in
the event of an accident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an
accident.
Warning! G
Only use seat or head restraint covers which
have been tested and approved by
Mercedes-Benz for your vehicle model.
Using other seat or head restraint covers
may interfere with or prevent the activation
of the active head restraints. Contact an
authorized Mercedes-Benz Center for
availability.
Do not attach any objects (e.g. hangers) to
the head restraint posts. Otherwise, the ac-
tive head restraints may not be able to func-
tion properly or offer the intended degree of
protection in the event of an accident.