Page 49 of 299
50 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Front head restraints
Removal:
Tilt the backrest rearward for easier removal of the front
head restraints.
Push button (1) up to bring the power adjustable head
restraint to its highest position.
Pull out head restraint completely with both hands.Installation:
Push button (1) of the power adjustable head restraint
up for approximately 5 seconds.
Insert the head restraint and push it down to the stop.
Adjust head restraint to the desired position.
For positioning of head restraints see also power seats,
front on page
44
and head restraints, rear on page .
Warning!
For your protection, drive only with properly
positioned head restraints.Adjust head restraint to support the back of the
head approximately at ear level.Do not drive the vehicle without the seat head
restraints. Head restraints are intended to help
reduce injuries during an accident.
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Page 50 of 299
Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Head restraints, rear
Folding head restraints backward (with electronic key
in steering lock position 2):
Press symbol-side of rocker switch to release the head
restraints. The head restraints will then fold backward
for increased visibility.
Placing head restraints upright:
Pull head restraint forward until it locks in position.
Angle of head restraints:
The head restraint angle can be adjusted manually.Important!
For safety reasons, always drive with the rear head
restraints in the upright position when the rear seats
are occupied.
Keep area around head restraints clear of articles (e.g.
clothing) to not obstruct the folding operation of the
head restraints.
P54.25-2035-26
P91.10-2055-20
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Page 51 of 299

Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Backrest
1Release lever
Folding forward:
Lift release lever (1) and fold backrest forward. The seat
will automatically slide forward and the head restraint
will move down.
Folding back:
Lift release lever (1) and fold backrest back. The seat
and head restraint return to their previous positions.
To interrupt the procedure, activate the power seat
switch.Notes:
The automatic seat slide is provided with a safety
feature. The automatic process is interrupted, if the
backrest of the sliding seat is pushed against an
occupant or object. The seat will slide forward, stop, and
make 3 attempts sliding backward.
To halt the automatic process, activate the power seat
switch.
Investigate and correct the cause of interruption.
Now use memory button or power seat switch to bring
seat into desired position.
Wa r n i n g !
When leaving the vehicle always remove the
electronic key from the steering lock, and lock your
vehicle.The power seats can also be operated with the
driver’s or passenger door open. Do not leave
children unattended in the vehicle or with access
to an unlocked vehicle. Unsupervised use of vehicle
equipment may cause serious personal injury.Never place hands under seat or near any moving
parts during a seat adjustment procedure.
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Page 52 of 299
Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Multicontour seat (optional)
We recommend to adjust the multicontour seat in the
follow ing orde r:
1Seat cushion depth
2Backrest bottom
3Backrest center
4Side bolster adjustmentThe seat cushion movement and amount of backrest
cushion height and curvature can be continuously
varied with regulators (1, 2 and 3) after turning the
electronic key in steering lock to position 2.
The side bolsters of the backrest can be adjusted with
rocker switch (4):
•press to the right – increase side support,
•press to the left – decrease side support.
If the engine is turned off, the last cushion setting is
retained in memory, and automatically adjusts the
cushion to this setting when the engine is restarted.
1
2
3
4
P91.25-2063-26
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Page 53 of 299
Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Heated seats (front)
The front seat heater switches are located in the center
console.
The front seat heaters can be switched on with the
electronic 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 automatically
switches to normal 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 on, press lower half of
switch.
If left on, the seat heater automatically turns off after
approximately 30 minutes of operation.
P54.25-2036-26
12
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Page 54 of 299
Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Notes:
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.
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Page 55 of 299

Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Seat belts and integrated restraint system
Your vehicle is equipped with seat belts for all seats,
emergency tensioning retractors for the front seat belts,
dual front airbags, door mounted side impact airbags
and knee bolsters for driver and front passenger. Their
protective functions are designed to complement one
another.
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 passengers we strongly
recommend their use.
Wa r n i n g !
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, 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.
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Page 56 of 299

Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Note:
For cleaning and care of the seat belts, see page274.
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.
Warning!
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 for injury or
death is lessened if you are 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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