2007 MERCEDES-BENZ ML320CDI check engine

Contents
Oxidation catalyst
(diesel engine).............................. 349
Emission control .......................... 350
Coolant temperature .................... 350
At the gas station .............................. 352
Refueling ...................................... 352
Check regularly and
before a long trip.......................... 354
Engine compartment ......................... 356
Hood ............................................ 356
Engine oil ..................................... 358
Transmission fluid level ................ 362
Coolant level ................................ 362
Windshield/rear window
washer system and
headlamp cleaning system* ........ 363
Tires and wheels ................................ 365
Important guidelines .................... 365
Tire care and maintenance........... 366
Direction of rotation ..................... 368
Loading the vehicle ...................... 368
Recommended tire
inflation pressure ......................... 374
Checking tire inflation pressure ... 375
Tire labeling.................................. 385
Load identification ....................... 389DOT, Tire Identification Number
(TIN) .............................................. 389
Maximum tire load ........................ 391
Maximum tire inflation pressure ... 391
Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 392
Tire ply material ............................ 394
Tire and loading terminology......... 394
Rotating tires ................................ 397
Winter driving ..................................... 399
Winter tires ................................... 399
Block heater (Canada only) ........... 400
Snow chains.................................. 400
Maintenance....................................... 401
Maintenance service indicator
message ....................................... 401
Calling up the maintenance
service indicator display ............... 403
Resetting the maintenance
service indicator ........................... 403
Vehicle care........................................ 404
Cleaning and care of the vehicle ... 404
Practical hints.................................. 413
What to do if … ................................... 414
Lamps in instrument cluster ......... 414
Lamp in center console ................ 426
Vehicle status messages in the
multifunction display .................... 428
Where will I find ...? ............................ 469
First aid kit.................................... 469
Vehicle tool kit.............................. 469
Minispare wheel
(except ML 63 AMG) ..................... 473
Collapsible tire
(ML 63 AMG only) ......................... 474
Unlocking/locking in an emergency .. 475
Unlocking the vehicle ................... 475
Locking the vehicle ....................... 476
Unlocking and opening
the tailgate ................................... 476
Fuel filler flap ................................ 477
Opening/closing in an emergency ..... 478
Power tilt/sliding sunroof* ........... 478
Resetting activated head restraints.... 479
Replacing SmartKey batteries ............ 480

23 At a glance
Exterior view
Item
Page
1
TailgateOpening
119
Closing
121
Power tailgate*
119,
124
Cargo compartmentVehicle tool kit
469
Spare wheel
473
2
Rear window defroster
208
3
Rear lamps
483
4
Fuel filler flap
352
Refueling
352
Fuel
353,
547
5
Exterior rear view mirrorsAdjusting
49
Auto-dimming rear view
mirrors*
201
Power folding*
202
Item
Page
6
Towing eye boltInstalling
520
Vehicle tool kit
469
7
Tires and wheels
365,
536
Checking tire inflation
pressure
375
Run Flat Indicator
(Canada vehicles)
377
Tire Pressure Monitoring
System (U.S. vehicles)
379
Advanced Tire Pressure
Monitoring System*
(Canada vehicles)
381
Flat tire
497
Spare wheel
473
8
Hood
356
Engine oil
358
Coolant
362
Item
Page
9
Windshield wipers
60
Wiper blades, replacing
494
Wiper blades, cleaning
410
a
WindshieldCleaning with wiper fluid
62
Cleaning
410
b
Roof rails
281
Carriers*
281
c
Power tilt/sliding sunroof*
241
d
DoorsLocking and unlocking
108
Opening and closing
119
Locking/unlocking in an
emergency
478
e
Front lamps
483
f
Headlamp cleaning system*
200

40 Getting startedUnlockingSmartKeyStarter switch0For removing SmartKey
1Power supply for some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary. If
a lamp in the instrument cluster re-mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 414).
3Starting position
i
When you switch on the ignition, the indica-
tor and warning lamps (except high beam head-
lamp indicator lamp and turn signal indicator
lamps unless activated) in the instrument cluster
come on. The indicator and warning lamps (ex-
cept high beam headlamp indicator lamp and
turn signal indicator lamps if activated) will go
out when the engine is running. This indicates
that the respective systems are operational.
i
When the SmartKey is removed from the
starter switch and the automatic transmission is
in a position other thanP, the automatic trans-
mission automatically shifts toP.
!
If the SmartKey cannot be turned in the
starter switch, the battery may not be sufficient-
ly charged.


Check the battery and charge it if necessary
(page 507).


Get a jump start (
page 515).
To prevent accelerated battery discharge or a
completely discharged battery, always remove
the SmartKey from the starter switch when the
engine is not in operation.

42 Getting startedUnlockingPosition 0
Before you press the KEYLESS-GO
start/stop button, the vehicle’s on-board
electronics have status0 (as with
SmartKey removed).
Position 1
Press the KEYLESS-GO start/stop
button once.
This supplies power for some electrical
consumers, such as seat adjustment.Ignition (or Position 2)

Press the KEYLESS-GO start/stop
button twice.
This supplies power for all electrical
consumers.
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary. If
a lamp in the instrument cluster re-
mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 414).For information on starting the engine
using the KEYLESS-GO start/stop button,
see “Starting with KEYLESS-GO*”
(
page 55).
For more information on KEYLESS-GO, see
“SmartKey with KEYLESS-GO*”
(page 112).
i
If you now press the KEYLESS-GO
start/stop button


once more, the ignition (position
2) is
switched on


twice more, the power supply is again
switched off
i
If you now press the KEYLESS-GO
start/stop button once more, the power supply
is again switched off.
i
When you switch on the ignition, the
indicator and warning lamps (except high beam
headlamp indicator lamp and turn signal indica-
tor lamps unless activated) in the instrument
cluster come on. The indicator and warning
lamps (except high beam headlamp indicator
lamp and turn signal indicator lamps if activated)
should go out when the engine is running. This
indicates that the respective systems are
operational.

63 Getting started
Driving
Deactivating intermittent wipe
Turn rear window wiper switch1 to
position4 (
page 62).
Indicator6 for the rear window wiper
is cleared from the lower multifunction
display, indicating that the rear window
wiper is deactivated.
Wiping with windshield washer fluid

Turn and hold rear window wiper
switch1 in position2 or5
(page 62) until the rear window is
clean.
The rear window wiper operates with
washer fluid.
For information on filling up the washer
reservoir, see “Windshield/rear window
washer system and headlamp cleaning
system*” (
page 363).
Problems while driving
The engine runs erratically and misfires

An ignition cable may be damaged
(gasoline engine only).


The engine electronics may not be
operating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it
(gasoline engine only).

Give very little gas.

Have the problem repaired by an
authorized Mercedes-Benz Light Truck
Center as soon as possible.The coolant temperature is above
248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle in a safe location as
soon as possible and turn off the en-
gine. Allow engine and coolant to cool
off.

Check the coolant level and add cool-
ant if necessary (
page 362).

86 Safety and SecurityOccupant safetyFurthermore, the occupant weight may ap-
pear to increase or decrease due to
objects hanging on the seat, other passen-
gers pushing on the seat, objects lodged
underneath the seat or stuffed between
seat and middle console or between seat
and door or due to objects applying pres-
sure on the back of the seat. Always make
sure that the seat has clearance in all
directions at all times.
Both, driver and the front passenger
should always use the
59indicator lamp as an indi-
cation of whether or not the front passen-
ger is properly positioned.i
If your seat, including your trim cover and
cushion needs to be serviced in any way, take
the vehicle to your authorized Mercedes-Benz
Light Truck Center.
Only seat accessories approved by
Mercedes-Benz may be used.
Warning!
G
If the 59indicator lamp illumi-
nates when an adult or someone larger than
a small individual is in the front passenger
seat, have the front passenger re-position
himself or herself in the seat until the
59indicator lamp goes out, or
check whether objects are caught under or
around the seat.
More information about air bag display mes-
sages (
page 440).
In the event of a collision, the air bag control
unit will not allow front passenger front air
bag deployment when the OCS classified
the front passenger seat occupant as being
up to or less than the weight of a typical
12-month-old child in a standard child re-
straint or if the front passenger seat is
sensed as being empty.
When the OCS senses that the front passen-
ger seat occupant is classified as being up
to or less than the weight of a typical
12-month-old child in a standard child
restraint, the 59indicator
lamp will illuminate when the engine is start-
ed and remain illuminated, indicating that
the front passenger front air bag is deacti-
vated.
When the OCS senses that the front passen-
ger seat is classified as being empty, the
59indicator lamp will illumi-
nate when the engine is started and remain
illuminated, indicating that the front
passenger front air bag is deactivated.

151 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Standard display
AMG
1
1AMG vehicles only.
Off-road mode
1
Audio
Navi*
Airmatic*/Compass
(page 154)
(page 156)
(page 159)
(page 159)
(page 161)
(page 162)
Commands/submenusTrip- and main odometer
Engine oil temper-
ature
Off-road driving
program on/off
Selecting radio
station
Route guidance in-
structions, current
direction traveled
Compass
Checking tire inflation
pressure
Vehicle supply
voltage
Selecting satellite
radio station*
(USA only)
Vehicle level*
Checking coolant tem-
perature
RACETIMER
Operating CD
player
Calling up digital speed-
ometer or outside tem-
perature
Overall analysis
Calling up maintenance
service indicator
Lap analysis
Checking engine oil level
i
The headings used in the menus table are
designed to facilitate navigation within thesystem and are not necessarily identical to those
shown in the control system displays. The firstfunction displayed in each menu will show you
which part of the system you are in.

154 Controls in detailControl systemStandard display menu
In the standard display, the main odometer
and the trip odometer appear in the multi-
function display.
1Trip odometer
2Main odometer
If you see another display, press
buttonè orÿ repeatedly until
the standard display appears.

Press buttonk orj to select
the functions in the standard display
menu.The following functions are available:Checking coolant temperature
Function
Page
Checking tire inflation pressure
375
Checking coolant temperature
154
Calling up digital speedometer
or outside temperature
155
Calling up maintenance service
indicator
403
Checking engine oil level
(ML 500)
358
Warning!
G


Driving when your engine is overheated
can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously
burned.


Steam from an overheated engine can
cause serious burns which can occur
just by opening the hood. Stay away
from the engine if you see or hear steam
coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of
the vehicle and do not stand near the vehicle
until the engine has cooled down.