checking oil 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

215 Check regulary and before a long trip
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Check regularly and before a long trip 1Engine oil level
See “Checking engine oil level” on page 233 and
“Engine oil level indicator” on page 89.
2Coolant level
See “Coolant level” on page 234.
3Brake fluid
See “Brake fluid” on page 294.
4Windshield washer system/
Headlamp cleaning system/
Rear window washer system
For refilling reservoir see page 236.
Opening hood, see page 231.
Ve h i c l e l i g h t i n g : Check function and cleanliness. For
replacement of light bulbs, see “Exterior lamps” on
page 260.
Exterior lamp switch, see page 90.

224 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Low engine oil level warning lamp
With the key in steering lock position 2, the
oil level warning lamp comes on and should
go out when the engine is running.
If the warning lamp does not go out after starting the
engine, or comes on with the engine running and at
operating temperature, the engine oil level has dropped
to approximately the minimum mark on the dipstick.
When this occurs, the warning lamp will first come on
intermittently and then stay on if the oil level drops
further.
If no oil leaks are noted, continue to drive to the nearest
service station where the engine oil should be topped to
the “full” mark on the dipstick with an approved oil.
The low engine oil level warning light should not be
ignored. Extended driving with the light illuminated
could result in serious engine damage that is not
covered by the Mercedes-Benz Limited Warranty.
In addition to the warning lamp, the engine oil level
should be periodically checked with the dipstick or via
the oil level indicator in the odometer display field, for
example during a fuel stop, or before a long trip (see
engine oil level indicator on page 89 and checking
engine oil on page 233).Low engine coolant level warning
When the coolant level warning lamp comes
on while driving, then the coolant level has
dropped below the required level, or the
coolant temperature is in the red zone. If no leaks are
noticeable and the engine temperature does not
increase, continue to drive to the nearest service station
and have coolant added to the coolant system, see
page 234. If the engine temperature reaches the red
zone, move vehicle to an area which is in a safe distance
from the roadway and turn off the engine. Also see
coolant temperature gauge on page 81.
The low engine coolant level warning should not be
ignored. Extended driving with the symbol displayed
may cause serious engine damage not covered by the
Mercedes-Benz Limited Warranty.
In cases of major or frequent minor coolant loss, have
the cooling system checked at your authorized
Mercedes-Benz Light Truck Center as soon as possible.
Notes:
Do not drive without coolant in the cooling system. The
engine will overheat causing major engine damage.
Monitor the coolant temperature gauge while driving.

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

233 Engine compartment
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Checking engine oil level
1Oil dipstick
2Oil filler cap
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check engine oil level approximately 5 minutes after
stopping the engine, allowing for the oil to return to the
oil pan.Wipe oil dipstick clean prior to checking the engine oil
level. Fully insert dipstick in tube, and remove after
three seconds to obtain accurate reading.
Oil level must be between the
lower (min) and upper (max) mark of
the dipstick.
Fill quantity between upper and lower dipstick marking,
the level is approximately 2.1 US qt (2.0 l).
Do not overfill the engine.
Excessive oil must be drained
or siphoned. It could cause damage to engine and
catalytic converter not covered by the Mercedes-Benz
Limited Warranty.
See page 224 for low engine oil level warning.
Note:
See page 89 for engine oil level indicator.

301 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Brake fluid ............................................................. 175, 294
Brake warning lamp ................................................. 219
Capacity ......................................................................293
Brake pad wear indicator .............................................225
Brake warning lamp ...................................................... 219
Brake fluid low .......................................................... 219
Brakes ....................................................173, 175, 293, 294
CCapacities
Fuels, coolants, lubricants etc. ...............................292
Cargo area ....................................................................... 131
Hooks .......................................................................... 133
Loading instructions ................................................ 136
Cargo area cover blind .................................................. 137
Cargo compartment lamp .............................................. 111
Cargo floor plates
Removable .................................................................. 129
Storage ........................................................................ 130
Cargo tie-down rings ..................................................... 132
Catalytic converter ........................................................ 160
Cellular telephone ......................................................... 139
Center console .................................................................. 20
Central locking switch .................................................... 32Central locking system .................................................... 26
Automatic central locking .........................................32
Locking and unlocking ............................................... 27
Mechanical keys ..........................................................29
Panic button .................................................................28
Remote control ............................................................26
Unlocking the liftgate ................................................. 28
Vehicle keys .................................................................24
Changing wheels ........................................................... 245
Inflating the space-saver tire ................................. 249
Charge indicator lamp .................................................. 223
CHECK ENGINE malfunction indicator lamp ............ 218
Check regularly and before a long trip ....................... 215
Checking engine oil level
Via engine oil level indicator ....................................89
Via oil dipstick .......................................................... 233
Child restraint ..............................................38, 46, 53, 65
Cleaning and care of the vehicle ................................ 278
Climate control .................................................................98
Air recirculation ........................................................102
Basic setting ...............................................................100
Defogging windows ................................................... 101
Defrosting windshield .............................................. 101
Dust filter ...................................................................102
Rear window defroster ............................................. 103
Special settings ......................................................... 101

303 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Emission control label ..................................................285
Engine compartment ..................................................... 231
Engine malfunction
CHECK ENGINE malfunction indicator lamp ....... 218
Engine oil additives .......................................................294
Engine oil consumption ................................................234
Engine oil level
Checking ............................................................. 89, 233
Warning ......................................................................224
Engine oil level indicator ................................................ 89
Engine oils ......................................................................294
Capacities ...................................................................292
Low engine oil level warning ..................................224
Engine overheating ......................................................... 81
Engine speed limit
Overrevving ................................................................. 82
Enlarged cargo area ....................................................... 131
Entrance lamps ...............................................................112
ESP
LOW RANGE — ESP ..................................................208
ESP (Electronic stability program) ..............................205
Control switch ...........................................................207
Malfunction indicator lamp ..................................... 221
Synchronizing ...........................................................206
Warning lamp ............................................................ 221ETR (Emergency tensioning retractor) .........................55
ETS (4-ETS+) .................................................................. 203
LOW RANGE – 4-ETS+ ............................................ 204
Exterior lamp switch .......................................................90
Exterior lamps ............................................................... 260
Adjusting headlamp aim ......................................... 268
Auxiliary fog lamp ............................................. 92, 264
Fog lamps .....................................................................93
Headlamp assembly ......................................... 261, 262
Headlamps .................................90, 261, 262, 268, 280
High mounted stop lamp ......................................... 267
License plate lamps ................................................. 267
Low and high beam ............................................90, 263
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
Exterior rear view mirrors ..............................................73
Electrically folding ...................................................... 75

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 ................................237 Vehicle 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 ............................ 259 Exterior 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

215
Check regulary and before a long trip
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Check regularly and before a long trip 1
Engine oil level
See “Checking engine oil level” on page 233 and
“Engine oil level indicator” on page 89.
2 Coolant level
See “Coolant level” on page 234.
3 Brake fluid
See “Brake fluid” on page 294.
4 Windshield washer system/
Headlamp cleaning system/
Rear window washer system
For refilling reservoir see page 236.
Opening hood, see page 231.
Ve h i c l e l i g h t i n g : Check function and cleanliness. For
replacement of light bulbs, see “Exterior lamps” on
page 260.
Exterior lamp switch, see page 90.

224
Malfunction and indicator lamps
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care Index
Low engine oil level warning lamp With the key in steering lock position 2, the
oil level warning lamp comes on and should
go out when the engine is running.
If the warning lamp does not go out after starting the
engine, or comes on with the engine running and at
operating temperature, the engine oil level has dropped
to approximately the minimum mark on the dipstick.
When this occurs, the warning lamp will first come on
intermittently and then stay on if the oil level drops
further.
If no oil leaks are noted, continue to drive to the nearest
service station where the engine oil should be topped to
the “full” mark on the dipstick with an approved oil.
The low engine oil level warning light should not be
ignored. Extended driving with the light illuminated
could result in serious engine damage that is not
covered by the Mercedes-Benz Limited Warranty.
In addition to the warning lamp, the engine oil level
should be periodically checked with the dipstick or via
the oil level indicator in the odometer display field, for
example during a fuel stop, or before a long trip (see
engine oil level indicator on page 89 and checking
engine oil on page 233). Low engine coolant level warning
When the coolant level warning lamp comes
on while driving, then the coolant level has
dropped below the required level, or the
coolant temperature is in the red zone. If no leaks are
noticeable and the engine temperature does not
increase, continue to drive to the nearest service station
and have coolant added to the coolant system, see
page 234. If the engine temperature reaches the red
zone, move vehicle to an area which is in a safe distance
from the roadway and turn off the engine. Also see
coolant temperature gauge on page 81.
The low engine coolant level warning should not be
ignored. Extended driving with the symbol displayed
may cause serious engine damage not covered by the
Mercedes-Benz Limited Warranty.
In cases of major or frequent minor coolant loss, have
the cooling system checked at your authorized
Mercedes-Benz Light Truck Center as soon as possible.
Notes:
Do not drive without coolant in the cooling system. The
engine will overheat causing major engine damage.
Monitor the coolant temperature gauge while driving.