MERCEDES-BENZ ML320 2002 W163 Service Manual

38 Seats
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Seats, front
Caution!
Do not remove head restraints except when mounting
seat covers. For removal see page 45. Whenever head
restraints have been removed be sure to reinstall them
before driving.
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 is properly positioned on the body.Never place hands under seat or near any moving
parts while a seat is being adjusted.
Wa r n i n g !
When leaving the vehicle always remove the key
from the steering lock, and lock your vehicle.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.

39 Seats
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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 insure adequate
control, reach, operation, and comfort. The head
restraint should also be adjusted for proper height. See
also airbag section on page 58 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
Standard 213.
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.
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.

40 Seats
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Manual seats (ML 320)
We recommend to adjust the manual seat in the
following order:
1Seat, fore / aft
Lift handle (1), slide seat to desired position and
allow handle to reengage. Check for proper
engagement before driving. The position should be
as far rearward as possible, consistent with ability to
properly operate controls.2Seat cushion tilt
Raise lever (2), move seat cushion to desired
position. Release lever.
3Backrest tilt
Turn handwheel (3) until your arms are slightly
angled when holding the steering wheel.
4Head restraint height
Raising:
Pull up on head restraint.
Lowering:
Push button (4), located at top of seat back, and
push down on head restraint.
Adj ust he ad r estrain t to supp ort the back of t he head
approximately at ear level. The head restraint angle
can also be adjusted manually.
See page 45 for removing head restraints.

41 Seats
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The slide switches are located on the entry side of each
front seat base.
The power seats are always in operational readiness.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.

42 Seats
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Only minor personal adjustments, as described below,
should then be required.
For exterior rear view mirrors, see page 77;
inside rear view mirror, see page 75;
steering wheel adjustment, see page 74.
Note:
See page 43 for instructions on storing and recalling the
seat position.Head restraint
Raising:
Pull up on head restraint.
Lowering:
Push button (1) and push down on head restraint, see
also page 45.
Adjust head restraint to support the back of the head
approximately at ear level. The head restraint angle can
also be adjusted manually.
See page 45 for removing head restraints.
Wa r n i n g !
When leaving the vehicle always remove the 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.

43 Seats
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(optional; Canada only: standard on ML 500;
USA: standard on ML 55 AMG)
The memory and stored position buttons are located on
the entry side of each front seat base.
5Memory button
6Position buttonsStoring positions into memory
Three sets of seat and exterior rear view mirror
positions may be programmed into memory.
Together with the driver’s seat you can store the
exterior rear view mirrors. Adjust the seat and exterior
rear view mirror to the desired position. See page 41 for
seat and page 77 for exterior rear view mirror
adjustment.
For the front passenger seat you can store the seat
position.
Push memory button (5), release, and within 3 seconds
push position button “1”. A second and third set of
positions for the same seat can be programmed into
memory by pushing first memory button (5) and then
position button “2”, respectively “3”.
Wa r n i n g !
Do not activate the memory function while driving.
Activating the memory function while driving
could cause the driver to lose control of the vehicle.

44 Seats
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Recalling positions from memory
To recall a seat and exterior rear view mirror position,
push and hold one of the position buttons “1”, “2” or “3”
until seat movement has stopped. The seat movement
stops when the respective 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.

45 Seats
Te ch n i c a l
data Instruments
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cluster displayPractical hints Car care Index Head restraint removal
Removal:
Pull head restraint to its highest position. Push lock
button (arrow) and pull out head restraint completely
with both hands.
Installation:
Insert the head restraint and push it down to the stop.
Push lock button (arrow) and adjust head restraint down
to the desired position.Ensure proper head restraint positioning, see above.
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.

46 Seats
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Heated seats (optional on ML 320)
The seat heater switches are located on the center
console.
The seat heaters can be switched on with the engine
running.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 20 minutes of operation.
P54.25-2036-26
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47 Seats
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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 lamps in the switch will blink for
approximately 30 seconds.
Within this time the seat heaters will switch on again
automatically as soon as sufficient voltage is available.
After approximately 30 seconds without sufficient
voltage the seat heaters switch off (indicator lamps go
out).