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Version: 2.11.8.1
Occupant safety
52
Emergency Tensioning Device (ETD),
seat belt force limiter
Preventive occupant safety (PRE-
SAFE®)
The seat belts for the front seats and rear
outer seats are equipped with ETDs and seat
belt force limiters.
The ETDs are designed to activate in the
following cases:
G Warning!
The PRE-SAFE® system is intended to reduce
the effects of an accident on vehicle
occupants who are wearing their seat belt
properly. Despite your vehicle being equipped
with the PRE-SAFE® system, the possibility of
personal injuries occurring as a result of an
accident cannot be eliminated. Therefore,
always drive carefully and adjust your driving
to the prevailing road, weather, and traffic
conditions.
Rin frontal or rear-end impacts exceeding
the system’s preset deployment threshold
Rin side impacts exceeding the system’s
preset deployment threshold on the far
side of the impact
Rin certain vehicle rollovers
The PRE-SAFE® system takes preventive
Rif the restraint systems are operational and
functioning correctly, see “SRS indicator
lamp” (Y page 36)
measures to better protect the occupants
from the possibility of personal injuries in the
following hazardous situations:
The ETDs for the front seats will only activate
if the front seat belts are fastened (latch plate
properly inserted into buckle).
The ETDs for the rear outer seats will activate
with or without the respective seat belts
fastened.
In an impact, the ETDs remove slack from the
seat belts in such a way that the seat belts fit
more snugly against the body. Seat belt force
limiters, when activated, are employed to
help reduce the peak force exerted by the
seat belts on occupants during a crash.
Remergency braking maneuvers with the
Brake Assist System (BAS) (Y page 62)
activated
Rcritical dynamic driving situations, e.g.
when the vehicle has been caused to
understeer or oversteer because it has
exceeded its physical limitations or in case
of evasive steering maneuvers at speeds
above approximately 85 mph (140 km/h)
PRE-SAFE® takes the following measures
when it is activated:
i The ETDs do not correct an incorrect seat RThe front seat belts are pre-tensioned
position or incorrectly worn seat belts.
automatically.
The ETDs do not pull occupants back
toward the seat backrest.
RVehicles with front passenger seat memory
function: If the passenger seat is in an
unfavorable position, the seat will be
adjusted to a position that seeks to better
protect the occupant.
G Warning!
Pyrotechnic ETDs that were activated must be
replaced.
RIf the vehicle is in a critical dynamic driving
situation, the door windows close, except
for a minimal gap that remains open.
For your safety, when disposing of the
pyrotechnic ETDs always follow our safety
instructions. These are available at any
authorized Mercedes-Benz Center.
RVehicles with power tilt/sliding sunroof: If
the vehicle is in a critical dynamic driving
situation, the tilt/sliding sunroof also
closes, except for a minimal gap that
remains open.
The PRE-SAFE® system has electrically
operated reversible pre-tensioners that do
not require replacement after activation.
| Categories | Mercedes-Benz M-Class Manuals, Mercedes-Benz Manuals |
|---|---|
| Tags | Mercedes-Benz ML350, Mercedes-Benz ML350 BlueTec, Mercedes-Benz ML550, Mercedes-Benz ML63 AMG, Mercedes-Benz W164 |
| Model Year | 2010 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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