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50 Seats
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Seat heater (SL 500 optional)
The seat heater switches are located on the center
console.
The seat heaters can be switched on with the key in
steering lock positions 1 or 2.Press switch to turn on seat heater:
1Normal seat heating mode. One indicator lamp in
the switch lights up.
2Rapid seat heating mode. Both indicator lamps in
the switch light up. After approximately 5 minutes
in the rapid seat heating mode, the seat heater
automa tica lly sw itches to norma l operation and only
one indicator lamp will stay on.
Turning off seat heater:
If one indicator lamp is on, press upper half of switch.
If both indicator lamps are one, press lower half of
switch.
If left on, the seat heater automatically turns off after
approximately 30 minutes of operation.
P91.30-0270-26
12
Page 55 of 297
51 Seats
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Note:
When in operation, the seat heater consumes a large
amount of electrical power. It is not advisable to use the
seat heater longer than necessary.
The seat heaters may automatically switch off if too
many power consumers are switched on at the same
time, or if the battery charge is low. When this occurs,
the indicator lamp in the switch will blink (both
indicator lamps blink during rapid seat heating mode).
The seat heaters will switch on again automatically as
soon as sufficient voltage is available.
If the blinking of the indicator lamps is distracting to
you, the seat heaters can be switched off.
Page 56 of 297

52 Restraint systems
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Seat belts and integrated restraint system
Your vehicle is equipped with lap-shoulder seat belts,
emergency tensioning retractors for the seat belts, as
well as airbags and knee bolsters.
Seat belts
Important!
Laws in most states and all Canadian provinces require
seat belt use.
All states and provinces require use of child restraints
that comply with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Vehicle Safety
Standard 213.
All child restraint systems are designed to be secured in
vehicle seats by lap belts or the lap belt portion of a lap-
shoulder belt.
For your safety and that of your passenger we strongly
recommend their use.
Note:
For cleaning and care of the seat belts, see page 265.
Wa r n i n g !
The seat belts provide protection only with the
backrest locked in place. If the seat belt warning
lamp< does not go out, but is instead lit
continuously, then a backrest is not engaged in its
lock.Never ride in a moving vehicle with the backrest
reclined. Sitting in an excessi vely reclined position
can be dangerous. You could slide under the seat
belt in a collision. If you slide under it, the belt
would apply force at the abdomen or neck. That
could cause serious or even fatal injuries. The
backrest and seat belt provide the best restraint
when the wearer is in an upright position and the
belt is properly positioned on the body.
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53 Restraint systems
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Seat belt nonusage warning system
With the key in steering lock position 2, a warning
sounds for a short time if the driver’s seat belt is not
fastened.
BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
Failure to wear and properly fasten and position
your seat belt greatly increases your risk of
injuries and their likely severity in an accident.
You and your passenger should always wear seat
belts.If you are ever in an accident, your injuries can be
considerably more severe without your seat belt
properly buckled. Without your seat belt buckled,
you are much more likely to hit the interior of the
vehicle or be ejected from it. You can be seriously
injured or killed.In th e sam e c rash, th e possibility of injury or death
is lessened if you are wearing your seat belt.Never let more people ride in the vehicle than there
are seat belts available. Be sure everyone riding in
the vehicle is correctly restrained with a separate
seat belt.
Wa r n i n g !
Children 12 years old and under must never ride in
this vehicle, except in a Mercedes-Benz authorized
BabySmart
TM compatible child seat, which operates
with the BabySmart
TM system installed in the
vehicle to deactivate the passenger side front
airbag wh en it is properly installed. Otherwise they
will be struck by the airbag when it inflates in a
crash. If this happens, serious or fatal injury can
result.
Infants and small children must be seated in an
appropriate infant or child restraint system, which
is properly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.
Page 58 of 297
54 Restraint systems
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fastening of seat belts1Latch plate
2Buckle
3Release button
Pull belt with latch plate (1) across shoulder and lap.
Push latch plate (1) into buckle (2) until it clicks.
To help avoid severe or fatal injuries, the lap belt should
be positioned as low as possible on your hips and not
across the abdomen.
Do not twist the belt. A twisted seat belt may cause
injury.
Wa r n i n g !
Always fasten your seat belt before driving off.
Always make sure your passenger is properly
restrained.
Page 59 of 297
55 Restraint systems
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Press switch (4) to adjust the height of the seat belt
outlet so that the shoulder portion is located as close as
possible to the middle of your shoulder.
The shoulder portion of the seat belt must be pulled
snug and checked for snugness immediately after
engaging it and during driving. Tighten the lap portion
to a snug fit by pulling shoulder portion up.Operation of seat belts
The inertia reel stops the belt from unwinding during
sudden vehicle stops or when quickly pulling on the
belt.
The locking function of the reel may be checked by
quickly pulling out the belt.
3
2
1
P91.40-0346-26
4
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56 Restraint systems
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Caution!
For safety reasons, avoid adjusting the seat or backrest
into positions which could affect the correct seat belt
positioning.
Unfastening of seat belts
Push the release button (3) in the belt buckle (2).
Allow the retractor to completely rewind the seat belt by
guiding the latch plate (1).
Wa r n i n g !
USE SEAT BELTS PROPERLY.• Each occupant should wear their seat belt at all
times, because seat belts help reduce the
likelihood of and potential severity of injuries
in accidents, including rollovers. The
integrated restraint system includes "SRS"
(driver airbag, passenger airbag, door mounted
side impact airbags), "ETR" (seat belt
emergency tensioning retractors), and front
seat knee bolsters. The system is designed to
enhance the protection offered to properly
belted occupants in certain frontal (front
airbags) and side (side impact airbags) impacts
which exceed preset deployment thresholds.• Never wear belts over rigid or breakable
objects in or on your clothing, such as
eyeglasses, pens, keys etc., as these might
cause injuries.• Position the lap belt as low as possible on your
hips and not across the abdomen. If the belt is
positioned across your abdomen, it can cause
serious injuries in a crash.
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57 Restraint systems
Technical
data Instruments
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cluster displayPractical hints Car care Index
BabySmart
TM is a trademark of Siemens Automotive Corp.
• Never wear the shoulder belt under your arm,
against you neck or off your shoulder. In a
crash, your body would move too far forward.
That would increase the chance of head and
neck injuries. The belt would also apply too
much force to the ribs or abdomen, which
could severely injure internal organs such as
your liver or spleen.• Each seat belt must never be used for more
than one person at a time. Do not fasten a seat
belt around a person and another person or
other objects.• Belts should not be worn twisted. In a crash,
you wouldn’t have the full width of the belt to
manage impact forces. The twisted belt against
your body could cause injuries.• Pregnant women should also use a lap-
shoulder belt. The lap belt portion should be
positioned as low as possible on the hips to
avoid pressure on the abdomen.• Never place your feet on the instrument panel
or on the seat. Always keep both feet on the
floor in front of the seat.
Wa r n i n g !
USE CHILD RESTRAINTS PROPERLY.
Children 12 years old and under must never ride in
this vehicle, except in a Mercedes-Benz authorized
BabySmart
TM compatible child seat, which operates
with the BabySmart
TM system installed in the
vehicle to deactivate the passenger side front
airbag wh en it is properly installed. Otherwise they
will be struck by the airbag when it inflates in a
crash. If this happens, serious or fatal injury will
result.
Infants and small children must be seated in an
appropriate infant or child restraint system, which
is properly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.Adjust the passenger seat as far as possible
rearward from the dashboard when the seat is
occupied.