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46 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Power seats front
To operate the front power seat adjustment switches,
turn electronic key in steering lock to position 1 or 2
(with the driver’s or front passenger’s door open, the
power seats can also be operated with the electronic key
removed or in steering lock position 0).
Wa r n i n g !
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause the
driver to lose control of the vehicle.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 properly positioned on the body.Never place hands under seat or near any moving
parts while a seat is being adjusted.
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 front 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.
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47 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index The slide switches are located in each front door.
We recommend to adjust the power seat in the following
order:
1Seat, up / down
Press the switch (up / down direction) until
comfortable seating position with still sufficient
headroom is reached.
2Seat adjustment, fore / aft
Press the switch (fore / aft direction) until a
comfortable seating position is reached that still allows you to reach the accelerator / brake pedal
safely. The position should be as far rearward as
possible, consistent with ability to properly operate
controls.
3Seat cushion tilt
Press the switch in the direction of the arrow until
your legs are lightly supported.
4Backrest tilt
Press the switch in the direction of the arrow until
your arms are slightly angled when holding the
steering wheel.
5Head restraint
The height of the head restraint is adjusted
automatically with the seat so that the back of the
head is supported approximately at ear level. Adjust
the head restraint using the switch if the preset
position does not support the back of your head
approximately at ear level.
Adjust the head restraint angle by hand.
Note:
Your vehicle is equipped with power head restraints,
do not try to raise or lower them manually.
2
5
4
3
2
1
P54.00-2074-26
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Page 51 of 341
48 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Synchronizing Head Restraints
If the power supply was interrupted (battery
disconnected or empty), the head restraints are no
longer adjusted automatically.
To resynchronize the adjustment feature, turn
electronic key in steering lock to position 2, move the
seat completely forward and the head restraint fully
down, and hold respective buttons for approximately
two seconds.Caution!
Do not remove head restraints except when mounting
seat covers. For removal refer to Front seat head
restraints, see page 52. Whenever restraints have been
removed be sure to reinstall them before driving.
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Page 52 of 341
49 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Memory function
6Memory button
7Position buttonsStoring positions into memory
Three sets of seat / head restraint / steering wheel and
exterior rear view mirror positions may be programmed
into memory. After the seat / head restraint / steering
wheel and exterior rear view mirrors are positioned,
push memory button (6), release, and within 3 seconds
push position button “1”. A second and third set of
positions for the same seat / head restraint / steering
wheel and exterior rear view mirrors can be
programmed into memory by pushing first memory
button (6) and then “2”, respectively “3”.
Note:
For instructions on adjustment of steering wheel and
mirrors, see page 81 and 82.
76
P54.00-2075-26
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50 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Recalling positions from memory
To recall a seat / head restraint / steering wheel and
exterior rear view mirror position, push and hold
position button “1”, “2” or “3” until seat / head restraint /
steering wheel and exterior rear view mirror movement
has stopped. The seat / head restraint / steering wheel
and exterior rear view mirror movement stops when the
position button is released.
Caution!
Do not operate the power seats using the memory
button if the seat backrest is in an excessively reclined
position. Doing so could cause damage to front or rear
seats.
First move the backrest to an upright position.Important!
Prior to operating the vehicle, the driver should adjust
the seat height for proper vision as well as fore / aft
placement and backrest angle to ensure adequate
control, reach, operation, and comfort. The head
restraint should also be adjusted for proper height. See
also airbag section for proper seat positioning.
In addition, also adjust the steering wheel to ensure
adequate control, reach, operation, and comfort.
Both the inside and outside rear view mirrors should be
adjusted for adequate rearward vision.
Fasten seat belts. Infants and small children should be
seated in a properly secured restraint system that
complies with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Vehicle Safety
Stand ard 213.1.
All seat, head restraint, steering wheel, and rear view
mirror adjustments as well as fastening of seat belts
should be done before the vehicle is put into motion.
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51 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
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-
side 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 can 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 the 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 55 of 341
52 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Front seat head restraints
Removal:
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 page 46 and 53.
1
P82.40-2009-26
Wa r n i n g !
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 56 of 341
53 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Rear seat head restraints
Folding head restraints backward (with engine
running):
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.
P91.16-2018-26
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