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Note:
For cleaning and care of the seat belts, see page 318.
Seat belt nonusage warning system
With the electronic key in steering lock position 2, a 
warning sounds for a short time if the driver’s seat belt 
is not fastened.
Wa r n i n g !
Never ride in a moving vehicle with the backrest 
reclined. Sitting in an excessively 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.
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 passengers 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 the same crash, the possibility of injury or death 
is lessened if you ar wearing your seat belt.Wa r n i n g !
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. 
     
        
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data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Fastening of seat belts
1Latch plate
2Buckle
3Release buttonPush latch plate (1) into buckle (2) until it clicks. Do not 
twist the belt. A twisted seat belt may cause injury.
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.
Wa r n i n g !
Always fasten your seat belt before driving off. 
Always make sure your passengers are properly 
restrained – even those sitting in the rear. 
     
        
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Tighten the lap portion to a snug fit by pulling shoulder 
portion up.
The shoulder portion of the seat belt must be pulled 
snug and checked for snugness immediately after 
engaging it.4Button for belt outlet height adjustment
Raising:
Slide belt outlet upward.
Lowering: 
Press button (4) and slide belt outlet downward.
P91-10-2077-26
4
P91.40-2060-26 
     
        
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61 Restraint systems
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cluster displayPractical hints Car care Index Adjust seat belt so that shoulder portion is located as 
close as possible to the middle of your shoulder (it 
should not touch the neck). For this purpose, you can 
adjust the height of the belt outlet. Three positions are 
available for the front seats, five positions are available 
for the split rear bench seats.
Caution!
For safety reasons, avoid adjusting the seat or seat back 
into positions which could affect the correct seat belt 
positioning.
Operation
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.Rear-facing bench seat
If the rear-facing bench seat is not being used, slip the 
seat belt webbings into the retainers (5). 
     
        
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Unfastening of seat belts
Push the release button (3) in the belt buckle (2).
Allow t he retractor to completely rewind t he seat belt by 
guiding the latch plate (1).
Operation
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.
Wa r n i n g !
USE SEAT BELTS PROPERLY.• Seat belts can only work when used properly. 
Never wear seat belts in any other way than as 
described in this section, as that could result 
in serious injuries in case of an accident.• 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, front passenger airbag, front 
and rear door mounted side impact airbags, 
head protection window curtain airbags for 
side windows), ETD (seat belt Emergency 
Tensioning Device ), 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 and window curtain airbags) impacts 
which exceed preset deployment thresholds. 
     
        
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• 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 could cause 
serious injuries in a crash.• Never wear the shoulder belt under your arm, 
against your 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 should 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 any possible 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. 
     
        
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Wa r n i n g !
USE CHILD RESTRAINTS PROPERLY.
Children 12 years old and under must never ride in 
the front seat, 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 
front airbag when 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.
According to accident statistics, children are safer 
when properly restrained in the rear seating 
positions than in the front seating positions. 
Infants and small children must ride in back seats 
and be seated in an appropriate infant or child 
restraint system, which is properly secured with 
the vehicle’s seat belt and top tether strap, 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.Children too big for child restraint systems must 
ride in back seats using regular seat belts. Position 
shoulder belt across chest and shoulder, not face or 
neck. A booster seat may be necessary to achieve 
proper belt positioning. 
     
        
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Supplemental restraint system (SRS)
Airbags are intended as a supplement to seat belts. 
Airbags alone cannot protect as well as airbags plus 
seat belts in impacts for which the airbags were 
designed to operate, and do not afford any protection 
whatsoever in crashes for which the airbags are not 
designed to deploy.
The SRS uses two crash severity levels (thresholds) to 
activate either the Emergency Tensioning Device (ETD) 
or front airbag or both. Activation depends on the 
direction and severity of the impact exceeding the 
preset thresholds and whether the seat belt is fastened.Seat belt fastened
•first threshold exceeded:
ETD activates
•second threshold exceeded:
airbag also activates
Seat belt not fastened
Front seats:
•first threshold exceeded:
airbag activates, but not ETD
Rear outer seats:
•first threshold exceeded: 
ETD activates
Driver, front passenger and rear outer seat systems 
operate independently of each other.