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Safety and Security
Occupant safety
In such cases, the following systems are
automatically activated:
ț The front seat belts are pre-tensioned
electrically.
ț If the vehicle is in a severe skid or is
spinning, the door windows and the
tilt/sliding sunroof close until a small
gap remains.
Vehicles with front passenger seat memo-
ry function*:
ț If seat is in an unfavorable position, it
will be adjusted to a better position.
If the seat belts do not release:
̈ Adjust the backrest or seat slightly to
the rear until the seat belt tension is di-
minished.
The locking mechanism releases.
Active head restraints
The active head restraints offer the driver
and front passenger increased protection
from whiplash type injuries. In the event of
a rear-end collision, the head restraints on
the driver’s and front passenger’s seats
are designed to move forward in the direc-
tion of travel, providing the head with in-
creased support earlier on in the collision
sequence. The active head restraints move
forward whether the seat is occupied or
not.
i
If the closing procedure of the tilt/sliding
sunroof or door window is blocked, the tilt/slid-
ing sunroof or door window will stop and open
slightly.
i
The PRE-SAFE
®
system is activated in the
previously described circumstances only at
speeds exceeding 20 mph (30 km/h).
When the critical driving dynamic situation has
passed without an accident occurring, the
pre-tensioning on the seat belts is deactivated.
You can then adjust the seat, the door windows
and the tilt/sliding sunroof to their previous po-
sition.
Warning! G
Do not attach any objects (e.g. hangers) to
the head restraint posts. Otherwise, the ac-
tive head restraints may not function prop-
erly or offer the degree of protection they
were designed for in the event of a collision.
Warning! G
Only use seat or head restraint covers which
have been tested and approved by
Mercedes-Benz for your vehicle model. Us-
ing other seat or head restraint covers may
interfere with or prevent the activation of
the active head restraints. Contact your au-
thorized Mercedes-Benz Center for availabil-
ity.