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The 7 seat belt warning lamp only goes
out if:
both the driver and the front passenger
R
have fastened their seat belts.
or
the vehicle is stationary and a door is open.
R
i
For more information on the 7 seat
belt warning lamp, see "Warning and
indicator lamps in the instrument cluster,
seat belts" (
page 238).
Y
Emergency Tensioning Devices, belt
force limiters
G
WARNING
Pyrotechnic Emergency Tensioning Devices
that have been deployed must be renewed.
For your safety, when disposing of Emergency
Tensioning Devices, always observe the
safety instructions. These are available from
any authorized Mercedes-Benz Center.
®
The PRE-SAFE
system has electrically
operated reversible pre-tensioners that do
not require replacement after activation.
! If the front-passenger seat is not
occupied, do not engage the seat belt
tongue in the buckle on the front-
passenger seat. Otherwise, the Emergency
Tensioning Device could be triggered in the
event of an accident.
In order to ensure that the pyrotechnic
X
Emergency Tensioning Devices have not
been triggered, always have the seat belts
checked after an accident.
If the Emergency Tensioning Devices have
been triggered, they must be replaced.
The seat belts on the following seats have
Emergency Tensioning Devices and belt force
limiters:
driver's and front-passenger seat
R
the outer seats in the second row
R
the seats in the third row
R
Occupant safety
The ETDs tighten the seat belts in an accident,
pulling them close against the body.
The ETDs do not correct incorrect seat
positions or incorrectly fastened seat belts.
The ETDs do not pull vehicle occupants back
towards the backrest.
When triggered, seat belt force limiters help
to reduce the peak force exerted by the seat
belt on the vehicle occupant.
The belt force limiters for the front seats are
synchronized with the front air bags, which
take on a part of the deceleration force. This
results in the force exerted on the occupant
being distributed over a greater area.
The ETDs can only be activated when:
the ignition is switched on.
R
the restraint systems are operational; see
R
"SRS warning lamp" (
Y
the belt tongue is engaged in the buckle on
R
each of the lap-shoulder belts in the front.
the front-passenger seat is occupied and
R
the belt tongue is engaged in the buckle on
the front-passenger side
The belt tensioners on the outside seats in the
second row and on the seats in the third row
are triggered independently of the lock status
of the seat belts.
The ETDs are triggered depending on the type
and severity of an accident:
if, in the event of a head-on or rear-end
R
collision, the vehicle decelerates or
accelerates rapidly in a longitudinal
direction during the initial stages of the
impact
if, in the event of a side impact, the vehicle
R
is subjected to high lateral acceleration/
deceleration
if, in certain situations where the vehicle
R
overturns, the system determines that it
can provide additional protection
If the ETDs are deployed, you will hear a bang,
and a small amount of powder may also be
released. Only in rare cases will the bang
affect your hearing. The powder that is
released generally does not constitute a
59
page 41).
Z
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