manual transmission MERCEDES-BENZ ML320 1997 Complete Repair Manual

4 Contents
Practical hintsFirst aid kit .....................................228
Fuses ................................................228
Electrical outlet ..............................230
Stowing things in the vehicle ......230
Hood ................................................. 231
Checking engine oil level .............233
Automatic transmission
fluid level ...................................234
Engine oil consumption ................234
Coolant level ...................................234
Adding coolant ...........................235
Windshield washer/headlamp
cleaning system .........................236
Windshield and
headlamp washer fluid
mixing ratio ................................237Vehicle jack, wheel bolt
wrench and screwdriver ......... 237
Air pump ......................................... 239
Wheels ............................................ 240
Tire replacement ....................... 240
Rotating wheels ......................... 241
Spare wheel .................................... 242
Changing wheels ........................... 245
Tire inflation pressure ................. 250
Battery ............................................. 251
Jump starting ................................. 253
Towing the vehicle ........................ 255
Transmission selector lever,
manually unlocking .................. 259
Stranded vehicle ............................ 259Exterior lamps ................................260
Headlamp assembly ................... 261
Taillamp assemblies ..................265
Adjusting headlamp aim ...............268
Remote control
battery replacement .................270
Synchronizing
remote control ............................ 271
Emergency operation of
sliding/pop-up roof ...................272
Emergency operation of
Skyview Top ...............................273
Manual release for
fuel filler flap ............................. 274
Replacing wiper blades .................275
Roof rack ......................................... 276

19 Instruments and controls
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index For more detailed descriptions see index on page 300.
For adjustment of air outlets, refer to climate control,
see page 98.
1Cup holder, see page 114
2Parking brake release, see page 173
3Parking brake pedal, see page 173
4Steering wheel adjustment lever, see page 70
5Headlamp washer switch, see page 94
6Exterior lamp switch, see page 90
7Cruise control switch, see page 196
8Instrument cluster, see page 76
9Hazard warning flasher switch, see page 94
10Horn (with key in steering lock position 1 or 2),
Driver airbag, see page 56
11Steering lock with ignition / starter switch, see
page 162
12Switch for exterior rear view mirrors, electrically
folding, see page 75
13Windshield wiper / washer switch, see page 9514Transmission control – LOW RANGE mode, see
page 209
15Indicator lamp for antitheft alarm system
16Auxiliary front fog lamp / rear fog lamp switch, see
page 92
17MCS (Optional Modular Control System), see
separate operator’s manual
18Front passenger airbag, see page 56
19Glove box (illuminated with key in steering lock
position 1 or 2)
20Cup holder, see page 114
21Storage compartment
22Air recirculation switch, see page 98
23Air conditioner on /off switch, see page 98
24Air volume control switch
25Temperature selector switch
26Air distribution switch
27Electrical outlet, see page 230

156 Tele Aid
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Important!
If the indicator lamps do not start flashing after
pressing one of the buttons or remain illuminated (in
red) at any time, the Tele Aid system has detected a fault
or the service is not currently active, and may not
initiate a call. Visit your Mercedes-Benz Light Truck
Center and have the system checked or contact the
Response Center at 1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada) as soon as possible.Upgrade Signals
Tele Aid system processes calls using the following
priority.
•Automatic emergency – First priority
•Manual emergency – Second priority
•Roadside assistance – Third priority
•Information – Fourth priority
Should a higher priority call be initiated while you are
connected, an upgrade (alternating) tone will be heard,
and the appropriate indicator lamp will flash. If certain
information such as vehicle identification number or
client information is not available, the operator may
need to retransmit. During this time you will hear a
chirp and voice contact will be interrupted. Voice
contact will resume once the retransmission is
completed. Once a call is concluded, a chirp will be
heard and the appropriate indicator lamp will stop
flashing. The MCS system operation will resume.

167 Automatic transmission
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Maneuvering
To maneuver in tight areas, e.g. when pulling into a
parking space, control the vehicle speed by gradually
releasing the brakes. Accelerate gently and never
abruptly step on the accelerator.
To rock a vehicle out of soft ground (mud or snow),
alternately shift from forward to reverse, while applying
slight partial throttle.
Rocking a vehicle free in this manner may cause the
ABS or traction system malfunction indicator lamp to
come on. Turn off and restart the engine to clear the
malfunction indication.Towing a trailer
If the transmission hunts between gears on inclines,
manually shift to a lower gear (select “4”, “3”, “2”
or “1”). A lower gear and reduction of speed reduces the
chance of engine overloading and / or overheating.
At very steep inclines, not manageable with selector
lever in position “1”, switch transfer case to LOW
RANGE, see page 209 for instructions on how to engage
LOW RANGE.
For instructions on trailer towing refer to page 190.
Wa r n i n g !
Getting out of your vehicle with the selector lever
not fully engaged in position “P” is dangerous.
Also, when parked on an incline, position “P” alone
may not prevent your vehicle from moving,
possibly hitting people or objects.Always set the parking brake in addition to shifting
to position “P”, see page 173 for parking brake. When parked on an incline, also turn front wheel
against curb.
Wa r n i n g !
When leaving the vehicle always remove the key
from the steering lock, and lock the vehicle. Do not
leave children unattended in the vehicle, or with
access to an unlocked vehicle. Children could move
the gear selector lever from position “P”, which
could result in an accident or serious injury.

168 Automatic transmission
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Selector lever position
The current selector lever position is indicated in the
gear range indicator display. The automatic gear
shifting process can be adapted to specific operating
conditions using the selector lever.Park position
The park position is to be used when parking the
vehicle. Engage only with the vehicle stopped.
The park position is not intended to serve as a
brake when the vehicle is parked. Rather, the
driver should always use the parking brake in
addition to placing the selector lever in park to
secure the vehicle.
Notes:
The key can only be removed from the steering
lock with the selector lever in position “P”. With
the key removed, the selector lever is locked in
position “P”.
With a malfunction in the vehicle’s electrical
system the selector lever could remain locked in
position “P”. To unlock the selector lever
manually, see page 259.
Reverse gear
Shift to reverse gear only with the vehicle
sto p ped .

194 Driving instructions
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Tow in g a t r ai le r
There are many different laws, including speed limit
restrictions, having to do with trailer towing. Make sure
t ha t your rig will be lega l, not only for w here you reside,
but also for where you will be driving. A good source for
this information can be the police or local authorities.
Before you start driving with the trailer, check the
trailer hitch, break-away switch, safety chains, electrical
connections, lighting and tires. Also adjust the mirrors
to permit unobstructed view beyond rear of trailer.
If the trailer has electric brakes, start your vehicle and
trailer moving slowly, and then apply only the trailer
brake controller by hand to be sure the brakes are
working properly.
When towing a trailer, check occasionally to be sure that
the load is secure, and that lighting and trailer brakes
(if so equipped) are functioning properly.
Always secure items in the trailer to prevent load shifts
while driving.
Take into consideration that when towing a trailer, the
handling characteristics are different and less stable
from those when operating the vehicle without a trailer.
It is important to avoid sudden maneuvers.The vehicle and trailer combination is heavier, and
therefore is limited in acceleration and climbing ability,
and requires longer stopping distances. It is more prone
to reacting to side wind gusts, and requires more
sensitive steering input.
In order to gain skill and an understanding of the
vehicle’s behavior, you should practice turning,
stopping and backing up in an area which is free from
traffic.
If possible, do not brake abruptly, but rather engage the
brake slightly at first to permit the trailer to activate its
brake. Then increase the braking force.
Caution!
If the trailer should begin to sway, reduce the vehicle’s
speed and use the brake controller by hand to straighten
out the vehicle and trailer. In no case should you
attempt to straighten out the tow vehicle and trailer by
increasing the speed or oversteering and stepping on
the brakes.
If the transmission hunts between gears on inclines,
manually shift to a lower gear (select “4”, “3”, “2”
or “1”). A lower gear and reduction of speed reduces the
chance of engine overloading and / or overheating.

227 Contents - Practical hints
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Practical hintsFirst aid kit .....................................228
Fuses ................................................228
Electrical outlet ..............................230
Stowing things in the vehicle ......230
Hood ................................................. 231
Checking engine oil level .............233
Automatic transmission
fluid level ...................................234
Engine oil consumption ................234
Coolant level ...................................234
Adding coolant ...........................235
Windshield washer/headlamp
cleaning system .........................236
Windshield and
headlamp washer fluid
mixing ratio ................................237Vehicle jack, wheel bolt
wrench and screwdriver ......... 237
Air pump ......................................... 239
Wheels ............................................ 240
Tire replacement ....................... 240
Rotating wheels ......................... 241
Spare wheel .................................... 242
Changing wheels ........................... 245
Tire inflation pressure ................. 250
Battery ............................................. 251
Jump starting ................................. 253
Towing the vehicle ........................ 255
Transmission selector lever,
manually unlocking .................. 259
Stranded vehicle ............................ 259Exterior lamps ................................260
Headlamp assembly ................... 261
Taillamp assemblies ..................265
Adjusting headlamp aim ...............268
Remote control
battery replacement .................270
Synchronizing
remote control ............................ 271
Emergency operation of
sliding/pop-up roof ...................272
Emergency operation of
Skyview Top ...............................273
Manual release for
fuel filler flap ............................. 274
Replacing wiper blades .................275
Roof rack ......................................... 276

259 Towing
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Transmission selector lever, manually unlocking
In the case of power failure the transmission selector
lever can be manually unlocked, e.g. to tow the vehicle.
To do so, insert a pin (1), e.g. ball point pen, into the
covered opening below the position “D” of the shift
pattern. While pushing the pin down, move selector
lever from position “P”.
After removal of the pin from the opening, the cover will
not close fully. Only after moving the selector lever to
positions “D+” and “D–” does the cover return to its
closed position.Stranded vehicle
Freeing a stranded vehicle, on which the wheels are dug
into sand or mud, should be done with the greatest of
care, especially if the vehicle is heavily loaded.
Avoid pulling the vehicle jerkily or diagonally, since it
could result in damage to the chassis alignment.
Never try to free a vehicle that is still coupled to a
trailer.
If possible, a vehicle equipped with trailer hitch receiver
should be pulled backward in its own previously made
tracks.

300 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Index
AABS (Antilock brake system) ....................................... 201
LOW RANGE – ABS ..................................................202
Malfunction indicator lamp .....................................222
Adjustable steering wheel .............................................. 70
Indicator lamp ...........................................................222
Adjusting headlamp aim ...............................................268
Air conditioner refrigerant ...........................................294
Air pump .........................................................................239
Air recirculation ............................................................ 102
Airbag deactivation system ............................................ 53
Airbag OFF indicator lamp ...........................................222
Airbags .............................................................................. 56
Alarm system ............................................................. 35, 36
Anticorrosion/antifreeze .................... 181, 235, 293, 297
Antiglare night position ................................................. 71
Antilock brake system (ABS) ....................................... 201
LOW RANGE – ABS ..................................................202
Malfunction indicator lamp .....................................222
Antitheft alarm system ................................................... 35
Aquaplaning ................................................................... 178Ashtray
Center console, front ................................................ 118
Rear passenger compartment ................................. 118
Automatic central locking ..............................................32
Automatic transmission ................................................ 165
Emergency Operation ............................................... 172
Fluid level .................................................................. 234
Selector lever position .............................................. 168
Transmission selector lever,
manually unlocking 259
BBabySmart
TM airbag deactivation system ..................... 53
Self-test ......................................................................... 53
BAS (Brake assist system) ............................................ 199
Malfunction indicator lamp .....................................221
Battery .............................................................................251
Battery recycling ...................................................... 252
Charge indicator lamp ............................................. 223
Battery, remote control ................................................. 270
Block heater .................................................................... 182
Blocking of rear door windows ....................................105
Brake assist system (BAS) ............................................ 199
Malfunction indicator lamp .....................................221

306 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Parking lamp ...................................................... 90, 264
Replacing bulbs .........................................................260
Side marker lamp ......................................................264
Standing lamp .................................................... 90, 264
Taillamp assemblies .................................................265
Turn signal lamp ................................................ 90, 264
Turn signal lamp, side .............................................266
Layout of poly-V-belt ......................................................286
Liftgate ............................................................................... 34
Unlocking ..................................................................... 28
Lighter ..............................................................................119
Limp home mode (Automatic transmission) ............. 172
Loading instructions ..................................................... 136
Lockable storage compartment .....................................116
Locking and unlocking the vehicle ............................... 27
Low engine coolant level warning ..............................224
Low engine oil level warning .......................................224
LOW RANGE
Indicator lamp ........................................................... 221
LOW RANGE mode ........................................................209
LOW RANGE – 4-ETS+ .............................................204
LOW RANGE – ABS ..................................................202
LOW RANGE – ESP ...................................................208
MMaintenance ...................................................................147
Malfunction and indicator lamps in the instrument
cluster ......................................................................... 218
Manual locking/unlocking the doors ...........................29
Manual operation of Skyview Top .............................. 273
Manual operation of sliding/pop-up roof .................. 272
Manual seat, front ............................................................39
MCS, radio and telephone ............................................146
Mechanical keys ............................................................... 29
Memory .............................................................................42
Recalling ....................................................................... 42
Storing ........................................................................... 42
Mirror, exterior, adjusting ..............................................73
Mirror, exterior, rear view ..............................................73
Mirror, inside, rear view ................................................. 71
Mirrors, vanity ................................................................ 113