engine oil MERCEDES-BENZ ML500 1997 Complete Workshop Manual

294
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Engine oils
Engine oils are specifically tested for their suitability in
our engines. Therefore, use only engine oils
recommended by Mercedes-Benz. Information on
recommended brands is available at your authorized
Mercedes-Benz Light Truck Center.
Please follow Service Booklet recommendations for
scheduled oil changes. Failure to do so could result in
engine damage not covered by the Mercedes-Benz
Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil. They may be
harmful to the engine operation.
Damage or malfunctions resulting from blending oil
additives are not covered by the Mercedes-Benz Limited
War ra nt y. Air conditioner refrigerant
R-134a (HFC) refrigerant and special PAG lubricating oil
is used in the air conditioner system.
Never use R-12 (CFC) or mineral-based lubricating oil,
otherwise damage to the system will occur.
Brake fluid
During vehicle operation, the boiling point of the brake
fluid is continuously reduced through the absorption of
moisture from the atmosphere. Under extremely hard
operating conditions, this moisture content can lead to
the formation of bubbles in the system thus reducing
the system’s efficiency.
The brake fluid must therefore be replaced every two
years, preferably in the spring.
It is recommended to use only brake fluid approved by
Mercedes-Benz. Your authorized Mercedes-Benz Light
Truck Center will provide you with additional
information.

295
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Premium unleaded gasoline
Caution!
To maintain the engine’s durability and performance,
premium unleaded gasoline must be used. If premium
unleaded is not available and low octane fuel is used,
follow these precautions:
• have the fuel tank filled only partially with unleaded
regular and fill up with premium unleaded as soon
as possible,
• avoid full throttle driving and abrupt acceleration,
• do not exceed an engine speed of 3000 rpm, if the
vehicle is loaded with a light load such as two
persons and no luggage,
• do not exceed 2 / 3 of maximum accelerator pedal
position, if the vehicle is fully loaded or operating in
mountainous terrain. Fuel requirements
Use only Premium unleaded meeting ASTM
standard D 439:
The octane number (posted at the pump) must be
91 min. It is an average of both the Research (R) octane
number and the Motor (M) octane number: [(R+M) / 2].
This is also known as ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates such as
Ethanol, IPA, IBA and TBA can be used provided the
ratio of any one of these oxygenates to gasoline does not
exceed 10%, MTBE not to exceed 15%.
The ratio of Methanol to gasoline must not exceed 3%
plus additional cosolvents.
Using mixtures of Ethanol and Methanol is not allowed.
Gasohol, which contains 10% Ethanol and 90% unleaded
gasoline, can be used.
These blends must also meet all other fuel requirements
such as resistance to spark knock, boiling range, vapor
pressure etc..

296
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Gasoline additives
A major concern among engine manufacturers is carbon
build up caused by gasoline. Mercedes-Benz
recommends the use of only quality gasoline containing
additives that prevent the build up of carbon deposits.
After an extended period of using fuels without such
additives, carbon deposits can build up especially on the
intake valves and in the combustion area, leading to
engine performance problems such as:
• warm-up hesitation,
• unstable idle,
• knocking / pinging,
• misfire,
• power loss.
Do not blend other specific fuel additives with fuel.
They only result in unnecessary cost, and may be
harmful to the engine operation.
Damage or malfunctions resulting from poor fuel
quality or from blending specific fuel additives are not
covered by the Mercedes-Benz Limited Warranty. Coolants
The engine coolant is a mixture of water and
anticorrosion / antifreeze, which provides:
• corrosion protection,
• freeze protection,
• boiling protection (by increasing the boiling point).
The cooling system was filled at the factory with a
coolant providing freeze protection to approximately
-35 °F (-37 °C) and corrosion protection.
If the antifreeze mixture is effective to -22 °F (-30 °C), the
boiling point of the coolant in the pressurized cooling
system is reached at approx. 266 °F (130 °C).
The coolant solution must be used year round to provide
the necessary corrosion protection and increase in the
boil-over protection. You should have it replaced every
3years.
To provide the important corrosion protection, the
solution must be at least 45% anticorrosion / antifreeze
(equals a freeze protection to approx. - 22 °F [-30 °C]). If
you use a solution that is more than 55% anticorrosion/
antifreeze (freeze protection to approx. - 49 °F [-45 °C])-,

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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 .................................................... 32 Central 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

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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 ............................................................ 221 ETR (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

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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

ContentsOperation......................................... 191
The first 1000 miles (1500 km) ......... 192
Driving instructions ............................ 193
Drive sensibly – save fuel ............. 193
Drinking and driving ..................... 193
Pedals .......................................... 193
Power assistance ......................... 193
Brakes .......................................... 194
Driving off..................................... 195
Parking ......................................... 196
Tires ............................................. 196
Hydroplaning ................................ 197
Tire traction .................................. 197
Tire speed rating .......................... 198
Winter driving instructions ........... 198
Standing water ............................. 200
Off-road driving ............................ 200
Trailer towing ............................... 206
Passenger compartment .............. 211
Driving abroad .............................. 211
Control and operation of
radio transmitters......................... 211
Catalytic converter ....................... 212
Emission control........................... 212
Coolant temperature .................... 213At the gas station .............................. 214
Refueling ...................................... 214
Check regularly and before
a long trip ..................................... 215
Engine compartment ......................... 217
Hood ............................................ 217
Engine oil ..................................... 218
Transmission fluid level ................ 222
Coolant ........................................ 222
Battery ......................................... 223
Windshield washer system and
headlamp cleaning system* ......... 224
Tires and wheels ................................ 226
Important guidelines .................... 226
Life of tire..................................... 227
Direction of rotation ..................... 227
Checking tire inflation pressure ... 227
Rotating wheels ........................... 228
Winter driving .................................... 230
Winter tires .................................. 230
Block heater (Canada only) .......... 231
Snow chains ................................. 231Maintenance...................................... 232
Clearing the service indicator ...... 232
Service term exceeded ................ 233
Calling up the service indicator .... 233
Resetting the service indicator .... 233
Vehicle care....................................... 234
Cleaning and care of the vehicle .. 234
Practical hints................................. 241
What to do if … .................................. 242
Lamps in instrument cluster ........ 242
Additional indicators in the
speedometer display.................... 256
Where will I find ...? ........................... 257
First aid kit ................................... 257
Vehicle tool kit ............................. 257
Spare wheel (space-saver tire) ..... 259
Unlocking / locking in an emergency . 261
Unlocking the vehicle................... 261
Locking the vehicle ...................... 262
Changing batteries in the
remote control ............................. 262
Fuel filler flap ............................... 263
Manually unlocking the
transmission gear selector lever .. 264

Contents
Opening / closing in an emergency .... 265
Sliding / pop-up roof* ................... 265
Replacing bulbs ................................. 266
Bulbs ............................................ 266
Replacing bulbs for front lamps ... 268
Replacing bulbs for rear lamps..... 270
Adjusting headlamp aim............... 272
Replacing wiper blades ...................... 273
Removing ..................................... 273
Installing ...................................... 273
Flat tire .............................................. 274
Mounting the spare wheel............ 274
Battery ............................................... 278
Disconnecting the battery ............ 279
Removing the batteries ................ 279
Charging and reinstalling
batteries....................................... 279
Reconnecting the batteries .......... 279
Jump starting ..................................... 281
Towing the vehicle ............................. 283
Front towing eye .......................... 285
Rear towing eye ........................... 285
Stranded vehicle .......................... 286Fuses .................................................. 287
Fuse box in engine
compartment ................................ 287
Auxiliary fuse box in front
passenger footwell........................ 288
Technical data.................................. 289
Spare parts service............................. 290
Warranty coverage ............................. 291
Loss of Service and Warranty
Information Booklet ...................... 291
Identification labels ............................ 292
Layout of poly-V-belt drive .................. 293
Engine ................................................ 294
Rims and tires .................................... 295
Rims and tires ............................... 295
Spare wheel .................................. 296
Electrical system ................................ 297
Main Dimensions ................................ 298
Weights .............................................. 299Fuels, coolants, lubricants etc............ 300
Capacities ..................................... 300
Engine oils .................................... 302
Engine oil additives ....................... 302
Air conditioning refrigerant ........... 302
Brake fluid .................................... 302
Premium unleaded gasoline.......... 303
Fuel requirements......................... 303
Gasoline additives......................... 303
Coolants ....................................... 304
Anticorrosion / antifreeze.............. 305
Windshield washer system and
headlamp cleaning system* ......... 307
Windshield and headlamp
washer fluid mixing ratio............... 307
Consumer information........................ 308
Uniform tire quality grading .......... 308
Temperature ................................. 309
Technical terms............................... 311Index................................................. 317

25 At a glance
Instrument cluster
Item
Page
1
Gauge for
Coolant tempera-
ture
117
Outside tempera-
ture
118
Fuel reserve
warning lamp
252
2
Knob for
Activating instru-
ment cluster
116
Adjusting intensity
of instrument lamps
116
Main odometer
117
Trip odometer
readout / reset
118
Activating Flexible
Service System
(FSS) indicator
232
Item
Page
3
Left indicator lamps
with:¿Brake Assist
System
(BAS) / Electronic
Stability Program
(ESP) malfunction
warning lamp
246
{Electronic Traction
System (4-ETS) mal-
function indicator
lamp
252
-Antilock Brake Sys-
tem (ABS) malfunc-
tion warning lamp
242
2Brake pad wear in-
dicator lamp
254
:Low engine oil level
warning lamp
253
Item
Page
/Low engine coolant
level warning lamp
249
êLow range indicator
lamp
252
?Engine malfunction
indicator lamp
248
4
Speedometer with:v4-ETS (Electronic
Traction
System)/Electronic
Stability Program
(ESP) warning lamp
251
Trip / main
odometer
117
Display for Flexible
Service System
(FSS)
232
Engine oil level indi-
cator
219

201 Operation
Driving instructions
Special driving features for off-road
driving
The following driving features are available
for specific kind of operation:

LOW RANGE mode (
page 125)


LOW RANGE – ABS (
page 77)


LOW RANGE – 4-ETS (
page 80)


LOW RANGE – ESP (
page 81)
Off-road driving rules
Engage the LOW RANGE mode before driv-
ing under off-road conditions
(
page 125).
Fasten items being carried as securely as
possible (
page 157).Checklist before off-road driving
Tires


Check the tread depth and maintain
specified tire pressure (see tire pres-
sure label inside the fuel filler flap).


Check tires for possible damage and
remove foreign objects.


Replace missing valve caps.
iWe recommend keeping doors, liftgate,
windows, and sliding / pop-up roof*
closed whenever driving in off-road
mode.
!Observe the following during off-road
driving:

Adjust vehicle speed to condition of
terrain. The more uneven, rutty and
steeper the terrain, the lower the
speed should be


Watch out for obstacles, such as
rocks, holes, tree stumps and ruts.


Be especially careful when driving
in unknown territory. It may be nec-
essary to get out of the vehicle and
scout the path you intend to take.


Before driving through water, deter-
mine is depth.


Do not stop vehicle while immersed
in water, and do not shut off the
engine.


In sandy soil, please drive at a
steady speed as allowed by condi-
tions. This helps overcome the vehi-
cle rolling resistance and reduces
the likelihood of the vehicle sinking
into the ground.


Do not initiate jumps with the vehi-
cle. It interrupts the forward mo-
mentum of the vehicle.


Always drive onto slopes with the
the engine running and the vehicle
in gear.