Mercedes-Benz SLS-Class 2013 Owners Manual - Manual (Page 52)

If after six seconds the driver or front
passenger have not fastened their seat belts
and the doors are closed:
R the 7 seat belt warning lamp remains lit
as long as either the driver's or front-
passenger's seat belt is not fastened
R and if a vehicle speed of 15 mph
(25 km/h) is exceeded, the 7 seat belt
warning lamp lights up and a warning tone
also sounds with increasing intensity for a
maximum of 60 seconds or until the driver
or front-passenger seat belt has been
fastened
If the driver or front-passenger seat belt is
unfastened while the vehicle is in motion, the
7 seat belt warning lamp lights up and a
warning tone sounds again.
The warning tone ceases even if the driver or
front-passenger seat belt has still not been
fastened after 60 seconds. The 7 seat belt
warning lamp stops flashing but remains lit.
After the vehicle comes to a standstill, the
warning tone is reactivated and the 7 seat
belt warning lamp flashes again if the vehicle
speed again exceeds 15 mph (25 km/h).
The 7 seat belt warning lamp only goes
out if:
R both the driver and the front passenger
have fastened their seat belts.
or
R the vehicle is stationary and a door is open.
i For more information on the 7 seat
belt warning lamp, see "Warning and
indicator lamps in the instrument cluster,
seat belt" (
Y
page 187).
Emergency Tensioning Devices and belt
force limiters
The seat belts are equipped with Emergency
Tensioning Devices and seat belt force
limiter.
! 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.
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, the seat belt force limiters
help to reduce the peak force exerted by the
seat belt on the vehicle occupant.
The seat belt force limiter are synchronized
with the front air bags, which take on a part
of the deceleration force. Thus, the force
exerted on the occupant is distributed over a
greater area.
When the ignition is switched on, the ETDs
cannot be triggered unless:
R the restraint systems are operational; see
"SRS warning lamp". (
Y
page 36)
R the belt tongue is engaged in the buckle on
each of the three-point seat belts.
R the front-passenger seat is occupied and
the belt tongue is engaged in the buckle on
the front-passenger side.
The ETDs are triggered depending on the type
and severity of an accident:
R in the event of a head-on or rear-end
collision, if the vehicle decelerates or
accelerates rapidly in a longitudinal
direction during the initial stages of the
impact
R in the event of a side impact, if the vehicle
is subjected to high lateral acceleration/
deceleration
R Coupe: in certain situations if the vehicle
rolls over, and the system determines that
it can provide additional protection
R Roadster: if the vehicle rolls over
If the Emergency Tensioning Devices (ETDs)
are triggered, you will hear a bang, and a small
amount of smoke may also be released. Only
in rare cases will the bang affect your hearing.
50
Occupant safety
Safety