seats MERCEDES-BENZ ML320 1997 Complete Workshop Manual

38
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
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 insure adequate
control, reach, operation, and comfort. The head
restraint should also be adjusted for proper height. See
also airbag section on page 56 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.

39
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Manual seats
(ML 320)
We recommend to adjust the manual seat in the
following order:
1 Seat, 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. 2
Seat cushion inclination adjustment
Raise lever (2), move seat cushion to desired
position. Release lever.
3 Backrest adjustment
Turn handwheel (3).
4 Head restraint height
Raising:
Pull up on head restraint.
Lowering:
Push button (4), located at top of seat back, and
push down on head restraint.
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 43 for removing head restraints.

40
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Power seats (standard; optional on model ML 320)
The slide switches are located on the entry side of each
front seat base.
Turn key in steering lock to position 1 or 2 (with the
driver’s or passenger’s door open, the power seats can
also be operated with the key removed or in steering
lock position 0). We recommend to adjust the power seat in the following
order:
1 Seat, up / down
Press the switch (up/down direction) until
comfortable seating position with still sufficient
headroom is reached.
2 Seat 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.
3 Seat cushion tilt
Press the switch in the direction of the arrow until
your legs are lightly supported.
4 Backrest tilt
Press the switch in the direction of the arrow until
your arms are slightly angled when holding the
steering wheel.

41
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Only minor personal adjustments, as described below,
should then be required.
For exterior rear view mirrors, see page 73;
inside rear view mirror, see page 71;
steering wheel adjustment, see page 70.
Note:
See page 42 for instructions on storing and recalling the
seat position. Head restraint
Raising:
Pull up on head restraint.
Lowering:
Push button, located at top of seat back, and push down
on head restraint, see also page 43.
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 43 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.

42
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Memory storing and recalling
(optional on model ML 320 and ML 430)
5 Memory button
6 Position buttons Storing
Three sets of seat positions may be programmed into
memory. After the seat is positioned, 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”.
Recalling
To recall a seat 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.

43
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical 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.

44
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Heated seats (front, optional on ML 320)
The front seat heater switches are located on the center
console.
The front seat heaters can be switched on with the
engine running. Press switch to turn on seat heater:
1 Normal seat heating mode. One indicator lamp in
the switch lights up.
2 Rapid 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
12

45
Seats
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical 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 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).

46
Restraint systems
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Seat belts and integrated restraint system
Your vehicle is equipped with seat belts for all seats,
emergency tensioning retractors for front and second
row outboard seat belts, dual front airbags and door
mounted side impact airbags. 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
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 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.

50
Restraint systems
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
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.
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.• 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),
“ETR” (seat belt emergency tensioning
retractors for the outboard passenger seats
[except in the optional 3rd row seats]), 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.