2007 MERCEDES-BENZ ML320CDI check engine

509 Practical hints
Battery
Disconnecting, removing, reinstalling and reconnecting the battery
Step 1 (Disconnecting)

Set the automatic transmission to
positionP (
page 187).

Firmly depress the parking brake
(page 65).

Turn off the engine (
page 66).

Leave the ignition switched on
(page 40).
!
Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch. Otherwise the
alternator and other electronic components
could be severely damaged.
Have the battery checked regularly by an
authorized Mercedes-Benz Light Truck Center.
Contact your authorized Mercedes-Benz Light
Truck Center for further information.
Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Warning!
G
Disconnecting, removing, reinstalling and
reconnecting the battery is a complicated
and technically demanding procedure that
also requires safety precautions to avoid the
risk of injury. We strongly recommend that it
be performed by a qualified technician or an
authorized Mercedes-Benz Light Truck
Center only. Please read the instructions
fully before beginning operation and only
undertake it if you feel fully capable of
performing all of the tasks involved as de-
scribed in these instructions. Observe all
safety instructions and precautions when
handling automotive batteries
(page 507). Performing the tasks involved
incorrectly can cause damage to the vehicle
and impair the operating safety of the
vehicle, and/or cause severe injury to you
or others.
i
With a disconnected battery you will no
longer be able to turn the SmartKey in the starter
switch and pressing the KEYLESS-GO*
start/stop button will have no effect.
i
If your battery is discharged, the vehicle
must be jump started (
page 515) using the
jump start contacts in the engine compartment,
or an accessory battery charge unit* approved
by Mercedes-Benz must be connected using the
jump start contacts in the engine compartment
(see separate instructions for the accessory bat-
tery charge unit*) before any of the following
steps can be performed. If the battery cannot be
jumped or charged, please contact an
authorized Mercedes-Benz Light Truck Center.


515 Practical hints
Jump starting
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the bat-
tery of another vehicle. Observe the follow-
ing:

Jump starting should only be performed
using the jump-start contacts located
in the engine compartment
(page 516).


Jump starting should only be performed
when the engine and catalytic
converter
1 are cold.


Do not start the engine if the battery is
frozen. Let the battery thaw out first.


Only jump start from batteries with the
same voltage rating (12 V). Jump start-
ing with a more powerful battery could
damage the vehicle’s electrical system,
which will not be covered by the
Mercedes-Benz Limited Warranty.


Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.


Always make sure the jumper cables
are not on or near pulleys, fans or other
parts that move when the engine is
started or running.
Warning!
G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water, and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
1Vehicles with gasoline engine only.
!
Do not tow-start the vehicle.
!
Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine using a
battery quick charge unit.
If the engine does not run after several unsuc-
cessful starting attempts, have it checked at the
nearest authorized Mercedes-Benz Light Truck
Center.
Excessive unburned fuel generated by repeated
failed starting attempts may damage the catalyt-
ic converter
1.
Make sure the jumper cables do not have loose
or missing insulation.
Make sure the cable clamps do not touch any
other metal part while the other end is still at-
tached to a battery.

517 Practical hints
Jump starting

Connect positive terminal1 and2
with the jumper cable. Clamp cable to
charged battery1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminals3 and4
of the batteries with the second jumper
cable. Clamp the cable to negative
terminal3 of the charged battery
first.

Start the engine of the disabled vehi-
cle.You can now turn on the electrical con-
sumers. Do not switch on the headlamps
under any circumstances.

Remove the jumper cables first from
negative terminals4 and3 and then
from positive terminals2 and1.
You can now switch on the headlamps.

Have the battery checked at the near-
est authorized Mercedes-Benz Light
Truck Center.
!
Never invert the terminal connections!

523 Practical hintsFuses
Fuse box in engine compartment
The fuse box is located on the passenger
side of the engine compartment.
Open the hood (
page 356).
Example fuse box ML 350 (ML 320 CDI,
ML 63 AMG similar)1Clamp
2Fuse box cover
Fuse box ML 5001Clamp
2Fuse box cover
Pull clamp1 in direction of arrow.

Lift fuse box cover2 up.

Install fuse box cover in reverse order.

Close the hood after checking or
replacing fuses (
page 358).
Fuse box in cargo compartment
The fuse box is located in the cargo com-
partment behind the passenger side trim
panel.
1Lock
2Cover
!
The fuse box cover must be installed
properly to prevent moisture and/or dirt from
entering the fuse box and possibly impairing fuse
operation.

548 Technical dataFuels, coolants, lubricantsIn 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 Factory
Approved Service Products pamphlet 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.
Damage or malfunction resulting from
poor fuel quality or from blending addition-
al fuel additives other than those tested
and approved by us for use on
Mercedes-Benz vehicles listed in the
Factory Approved Service Products
pamphlet are not covered by the
Mercedes-Benz Limited Warranty.
Fuel requirements
Gasoline engine
Only use premium unleaded fuel.

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) /2). This is also known as the
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 must not 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.
Diesel engine
Only use commercially available vehicular
diesel fuels No. 2 or No. 1 (ASTM D975 No.
2-D or No. 1-D).
To prevent malfunctions, diesel fuel with
improved cold flow characteristics is of-
fered in the winter months. Check with
your fuel retailer.
!
Do not fill the tank with gasoline. Do not
blend diesel fuel with gasoline or kerosine. The
fuel system and engine will otherwise be dam-
aged, which is not covered by the
Mercedes-Benz Limited Warranty.

549 Technical data
Fuels, coolants, lubricants
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 corro-
sion protection.If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see
Factory Approved Service Products
pamphlet) are used to renew the coolant
concentration or bring it back up to the
proper level.To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. - 22°F [-30°C]). If
you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approx. - 49°F [-45°C]), the engine
temperature will increase due to the lower
heat transfer capability of the solution.
Therefore, do not use more than this
amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 anticorrosion/antifreeze should
be used to bring it up to the proper level
(have cooling system checked for signs of
leakage). Please make sure the mixture is
in accordance with label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Light
Truck Center.
!
Add premixed coolant solution only. Adding
water and MB 325.0 Anticorrosion/Antifreeze
separately from each other, could cause engine
damage not covered by the
Mercedes-Benz Limited Warranty.

550 Technical dataFuels, coolants, lubricantsAnticorrosion/antifreeze
Your vehicle contains a number of
aluminum parts. The use of aluminum
components in motor vehicle engines ne-
cessitates that anticorrosion/antifreeze
coolant used in such engines be
specifically formulated to protect the aluminum parts. (Failure to use such anti-
corrosion/antifreeze coolant will result in
a significantly shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 anticorrosion/anti-
freeze agent.Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Light Truck Center for service.
Anticorrosion/antifreeze quantityModel
Approx. freeze protection– 35°F (– 37°C)
– 49°F (– 45°C)
ML 320 CDI
5.1 US qt (4.75 l)
5.5 US qt (5.2 l)
ML 350
5.1 US qt (4.75 l)
5.5 US qt (5.2 l)
ML 500
5.4 US qt (5.0 l)
5.8 US qt (5.5 l)
ML 63 AMG
6.0 US qt (5.75 l)
6.7 US qt (6.3 l)

554 IndexAutomatic climate control (3-zone)* 220
Air conditioning, Cooling 230, 231
Air distribution, Front 226
Air distribution, Rear 234
Air recirculation mode 228
Air vents, Front 226
Air volume 227
Control panel, Front 222
Control panel, Rear 232
Deactivating system 224
Defogging 227
Defrosting 227
Maximum cooling, MAX COOL 228
Rear passenger compartment 232
Rear window defroster 205
Residual engine heat (REST) 232
Using driver-side settings for
all temperature zones 231
Automatic headlamp mode 137
Automatic lighting control, Interior
lighting 143
Automatic locking when driving 126
Automatic shift program
(ML 63 AMG only) 196Automatic transmission 54
Accelerator position 191
Automatic shift program
(ML 63 AMG only) 196
Emergency operation
(Limp-Home Mode) 198
Gear ranges 193
Gear selector lever 54, 185
Gear shifting malfunctions 198
Hill start assist system 192
Kickdown 191
Kickdown, manual shift program
(ML 63 AMG only) 198
Manual shift progam
(ML 63 AMG only) 196
Program mode selector switch
(ML 63 AMG only) 195
Shift program (ML 63 AMG only) 195
Shifting procedure 188
Starting the engine 54
Steering wheel gearshift control 194
Towing a trailer 192
Transmission fluid level 362
Transmission positions 189
Automatic Transmission Fluid see ATFB
Backrest
Seat 44
Seat, Lumbar support 130
Seat, Multicontour* 130
Backup lamps
Messages in the
multifunction display 458
Replacing bulbs 490
Bar 395
BAS 97
Lamps in instrument cluster 414
Messages in the
multifunction display 430
Basic carrier bars* 281
Batteries, SmartKey
Check lamp 108, 112
Checking battery condition 111
Messages in the
multifunction display 446
Replacing 480
Battery, Vehicle 507
Charging 514
Disconnecting and connecting 509
Jump starting 515
Removing and installing 509