2008 MERCEDES-BENZ ML320 malfunction

504 Practical hints
Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and sys-
tems secured by that fuse will stop operat-
ing.If a newly inserted fuse blows again, have
the cause determined and rectified by an
authorized Mercedes-Benz Light Truck
Center.
A fuse chart explains the fuse allocation
and fuse amperages. It is located in the
cargo compartment with the vehicle tool
kit (
page 448).
The electrical fuses are located in different
fuse boxes:

Fuse box in engine compartment
(
page 505)

Fuse box in cargo compartment
(
page 505)

Fuse box in passenger compartment
(
page 506)Before replacing fuses:
Apply parking brake (page 65).
Make sure the automatic transmission
is set toP (
page 185).
The gear position indicator in the multi-
function display should be on
P.
Turn off all electrical consumers.
Turn off the engine (page 40).
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Open the driver’s door (this puts
the starter switch in position0,
same as with the SmartKey re-
moved from the starter switch). The
driver’s door then can be closed
again.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than ap-
proved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied by an au-
thorized Mercedes-Benz Light Truck Center.
iA blown fuse must be replaced by an appro-
priate spare fuse (recognizable by its color or the
fuse rating given on the fuse) of the amperage
recommended in the fuse chart. Any
Mercedes-Benz Light Truck Center will be glad to
advise you on this subject.

525 Technical data
Fuels, coolants, lubricants
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters
required for vehicles with Maintenance
System. For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Products pamphlet
(USA only), or contact an authorized
Mercedes-Benz Light Truck Center.Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Any
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.
!Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System, or chang-
ing of oil and oil filter at change intervals longer
than those called for by the Maintenance System
will result in engine or emission control system
damage not covered by the Mercedes-Benz
Limited Warranty.
Please follow Maintenance System recommen-
dations for scheduled oil changes. Failure to do
so will result in engine or emission control
system damage not covered by the
Mercedes-Benz Limited Warranty.
!Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from blending
oil additives are not covered by the
Mercedes-Benz Limited Warranty.
!Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the system
will occur.
Warning!G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous
operating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s
efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s
Maintenance Booklet for replacement inter-
val.

527 Technical data
Fuels, coolants, lubricants
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Diesel engine
Only use commercially available vehicular
ULTRA-LOW SULFUR HIGHWAY DIESEL
FUEL (15 ppm SULFUR MAXIMUM).
To prevent malfunctions, diesel fuel with
improved cold flow characteristics is of-
fered in the winter months. Check with
your fuel retailer.Gasoline additives (gasoline engine)
A major concern among engine
manufacturers is carbon build-up caused
by gasoline. Mercedes-Benz recommends
only the use of 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 lossIn areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to the
Factory Approved Service Products
pamphlet (USA only) or contact an
authorized Mercedes-Benz Light Truck
Center for a listing of approved product(s).
Follow directions on product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary costs and
may be harmful to the engine operation.
!Do not fill the tank with gasoline. Do not
blend diesel fuel with gasoline or kerosine. The
fuel system and engine will otherwise be
damaged, which is not covered by the
Mercedes-Benz Limited Warranty.
!Damage or malfunction resulting from poor
fuel quality or from blending additional fuel
additives other than those tested and approved
by us for use on Mercedes-Benz vehicles are not
covered by the Mercedes-Benz Limited
Warranty.

532 Index
Automatic climate control (3-zone)* 218
Air conditioning, Cooling 229
Air distribution, Front 224
Air distribution, Rear 233
Air recirculation mode 227
Air vents, Front 224
Air volume 225
Control panel, Front 220
Control panel, Rear 231
Deactivating system 222
Defogging 225
Defrosting 225
Maximum cooling, MAXCOOL 226
Rear passenger compartment 231
Rear window defroster 203
Residual engine heat (REST) 230
Using driver-side settings for
all temperature zones 229
Automatic headlamp mode 136
Automatic lighting control, Interior
lighting 142
Automatic locking when driving 125
Automatic shift program
(ML 63 AMG only) 195Automatic transmission 54
Accelerator position 190
Automatic shift program
(ML 63 AMG only) 195
Emergency operation
(Limp-Home Mode) 197
Gear ranges 192
Gear selector lever 54, 183
Gear shifting malfunctions 197
Hill start assist system 191
Kickdown 190
Kickdown, manual shift program
(ML 63 AMG only) 196
Manual shift progam
(ML 63 AMG only) 195
Program mode selector switch
(ML 63 AMG only) 194
Shift program (ML 63 AMG only) 194
Shifting procedure 186
Starting the engine 54
Steering wheel gearshift control 193
Towing a trailer 191
Transmission fluid level 345
Transmission positions 187
Automatic Transmission Fluid see ATFB
Backrest
Seat 44
Seat, Lumbar support 129
Seat, Multicontour* 129
Backup lamps
Messages in the multifunction
display 438
Replacing bulbs 471
Bar 380
BAS 100
Lamps in instrument cluster 400
Messages in the multifunction
display 415
Basic carrier bars* 266
Batteries, SmartKey
Check lamp 110, 113
Messages in the multifunction
display 427
Replacing 461
Battery, Vehicle 489
Charging 496
Disconnecting and connecting 491
Jump starting 497
Removing and installing 491

533 Index
Bead 380
Belt reel 276
Beverage holder see Cup holder
Block heater (Canada only) 385
Bolts, Collapsible tire
(ML 63 AMG only) 453
Bolts, Minispare wheel
(except ML 63 AMG) 452
Brake fluid 525
Checking 339
Messages in the multifunction
display 430
Brake lamp
Cleaning lenses 393
Messages in the multifunction
display 438
Replacing bulbs 471
Brake pads 312
Messages in the multifunction
display 428
Brakes 312
Warning lamp 401
Break-in period 310
Bulbs, replacing see Replacing bulbs
Button for Voice control* system 30,
148C
California retail buyers and lessees,
Important notice for 11
Camera see Rear view camera*
Can holder see Cup holder
Capacities and recommended
fuel/lubricants 522
Card holder 32, 35, 284
Cargo compartment cover blind 271
Cargo net* 272
Cargo tie-down rings 268
Carpets, Cleaning 397
Catalytic converter
(gasoline engine) 335
CD changer* 161, 279
CD player 161
Center console
Lower part 32
Upper part 31
Central locking
Automatic 125
Locking/unlocking from the
inside 126
Switch 126Certification label 510
CHECK ENGINE malfunction
indicator lamp 403, 404
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System (Advanced TPMS)*,
(Canada only) 365
Checking tire pressure electronically with
the Tire Pressure Monitoring System
(TPMS), (USA only) 362
Checklist
Off-road driving 322
Returning from off-road driving 327
Children in the vehicle 89
Air bags 75, 89
Blocking rear door window
operation 96
Indicator lamp, Front passenger front
air bag 83
Infant and child restraint systems 84,
90
LATCH-type child seat anchors 93
Occupant Classification System
(OCS) 79
Cigarette lighter (Depending on vehicle
configuration) 286

537 Index
Engine
Belt layout (ML 320 CDI) 512
Belt layout (ML 350, ML 550) 512
Belt layout (ML 63 AMG) 512
Block heater (Canada only) 385
Break-in recommendations 343
Cleaning 391
Compartment 341
Emergency engine shut-down 506
Malfunction indicator lamp 29
Maximum engine speed 146, 513,
514
Number 511
Starting 54
Starting with KEYLESS-GO* 55
Starting with the SmartKey 55
Tachometer 29, 146
Technical data 513
Turning off with KEYLESS-GO* 67
Turning off with the SmartKey 67Engine coolant see Coolant
Engine oil 343, 525
Adding 344, 525
Additives 525
Changing 344, 525
Checking level 343
Checking with the oil dipstick 343
Consumption 343
Filler neck (ML 350, ML 320 CDI) 344
Filler neck (ML 550, ML 63 AMG) 344
Recommended engine oils and oil
filters 525
ESP
®27, 100
Four wheel electronic traction system
with ESP
®100
Messages in the multifunction
display 418, 419
Off-road-ESP
®103
Warning lamp 27, 405
ETD 87, 410
Safety guidelines 76
Expanding cargo compartment 269Exterior rear view mirrors 49, 199
Folding 201
Power folding* 200
Synchronizing 200
F
Fastening the seat belts 51
Filler neck, Engine oil
(ML 350, ML 320 CDI) 344
Filler neck, Engine oil
(ML 550, ML 63 AMG) 344
First aid kit 448
Flat tire 478
Collapsible tire
(ML 63 AMG only) 453, 518
Lifting the vehicle 479
Lowering the vehicle 487
Minispare wheel
(except ML 63 AMG) 452
Mounting the spare wheel 479
Preparing the vehicle 479
Spare wheel 518
Floormats 289

545 Index
Ornamental moldings, Cleaning 393
Outside temperature see Displays
Overdue maintenance service term 387
Overhead control panel 33
Oxidation catalyst (diesel engine) 335
P
Paintwork code 510
Paintwork, Cleaning 390
Panic alarm 97
Parcel net
Front passenger footwell 283
Front seat backrests 283
Parking 65, 315
On hills 65
Over things that burn, Potential
consequences 65, 335
Parking brake 57, 65
Lamps, Indicator and warning 401
Messages in the multifunction
display 429
Releasing 57
Parking lamps
Messages in the multifunction
display 441
Replacing bulbs 468Parking position*
Exterior rear view mirrors 177, 200
Parktronic* 31, 259
Cleaning system sensors 394
Minimum distance 261
Range 261
Switching on/off 263
System malfunction 263
System sensors 260
System sensors, Cleaning 394
Warning indicators 25, 262
Parts service 508
PASS AIR BAG OFF indicator lamp see
Front passenger front air bag off
indicator lamp
Passenger compartment 334
Fuse box 506
Interior lighting 142
Interior rear view mirror 33
Parcel net in front passenger
footwell 283Passenger safety see Occupant safety
Pedals 311
Phone see Telephone*
Plastic and rubber parts, cleaning 396
Poly-V-belt drive
Layout (ML 320 CDI) 512
Layout (ML 350, ML 550) 512
Layout (ML 63 AMG) 512
Positions (Memory function*) see Seats
Pounds per square inch see PSI
Power assistance 312
Power outlets 287
Power seat see Seats, Power
Power tilt/sliding sunroof 240
Convenience closing feature 238
Opening/closing 240
Stopping 238
Summer opening feature 237
Synchronizing 242
Power washer 390

551 Index
Temperature
Coolant 154
Display mode, Status indicator 168
Interior temperature 209
Interior temperature, setting see
Climate control or Automatic climate
control (3-zone)*
Outside temperature 155
Sensor, Interior temperature 206,
220
Sensor, Outside temperature 146
Setting display unit 155
Tether attachment points, see Children in
the vehicle
Three-zone Automatic climate control see
Automatic climate control (3-zone) *
Ticket holder 284
Tie-down rings 268
Tightening torque
Wheel bolts 487
Tilt/sliding sunroof see Power tilt/sliding
sunroof*
Time 169
TIN 374, 381Tire and Loading Information
Placard 352
Terminology 379
Tire Identification Number see TIN
Tire inflation pressure
Checking manually 359
Checking tire pressure electronically
with the Advanced Tire Pressure
Monitoring System (Advanced
TPMS)*, (Canada only) 365
Checking tire pressure electronically
with the Tire Pressure Monitoring
System (TPMS), (USA only) 362
Recommended tire inflation
pressure 357
Tires 348, 515
Advanced Tire Pressure Monitoring
System (Advanced TPMS)*, (Canada
only) 365
Air pressure 379
Care and maintenance 349
Chains 385
Cleaning 350
Collapsible tire
(ML 63 AMG only) 453Collapsible tire, Spare wheel 518
Combination low tire pressure/TPMS
malfunction telltale, USA only 27
Direction of rotation, Spinning 351
Driving instructions 315
Hydroplaning 316
Important guidelines 348
Important notes, Tire inflation
pressure 358
Inflation pressure 340, 357, 359
Information placard 352
Inspection 349
Load rating 370, 371, 381
Loading Information 352
Loading terminology 379
Loading the vehicle 351
Low tire pressure telltale 408
Low tire pressure telltale, Canada
only 27
Maximum load 382
Messages in the multifunction
display 408
Minispare wheel
(except ML 63 AMG) 452
Ply composition and material
used 382