2008 MERCEDES-BENZ ML350 engine

500 Practical hints
Towing the vehicle
If you want the gear position to remain in
neutral positionN, observe the following
instructions.Vehicles with SmartKey:
With the vehicle at a standstill and the
ignition switched on shift the automatic
transmission to neutral positionN.
If engaged, release the parking brake
(
page 57).
Switch off the ignition and leave the
SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:
With the vehicle at a standstill, depress
the brake pedal and keep it pressed.
With the ignition switched on shift the
automatic transmission to park
positionP.
Release the brake pedal.
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
!When towing the vehicle with all wheels on
the ground, the automatic transmission must be
in neutral positionN.
If you turn off the engine

using the SmartKey and

remove the SmartKey from the starter
switch
or

open a front door

or when using the KEYLESS-GO* start/stop
button and open a front door
the automatic transmission will shift to park
positionP automatically.
Warning!G
When leaving the SmartKey or SmartKey
with KEYLESS-GO* in the starter switch, do
not leave children unattended in the vehicle.
It is possible for children to switch on the
ignition which could result in unsupervised
use of vehicle equipment.
A child’s unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.

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.

505 Practical hints
Fuses
Fuse box in engine compartment
The fuse box is located on the passenger
side of the engine compartment.
Open the hood (page 341).
Example illustration fuse box ML 350
(ML 320 CDI, ML 550, ML 63 AMG similar)
1Fuse box cover
2Clamps
Pull clamps2 in direction of arrow.
Lift fuse box cover1 up.
Install fuse box cover in reverse order.
Close the hood after checking or
replacing fuses (
page 343).
Fuse box in cargo compartment
The fuse box is located in the cargo com-
partment behind the passenger side trim
panel.
1Lock
2CoverRemoving/installing cover
Open the tailgate (page 119).
Insert a suitable object such as a coin
into the slot of lock1 (
page 505).
Turn lock1 counterclockwise by 90°
in direction of arrow.
Remove cover2.
Install cover2 in reverse order.
!The fuse box cover must be installed
properly to prevent moisture and/or dirt from
entering the fuse box and possibly impairing fuse
operation.

506 Practical hints
Fuses
Fuse box in passenger compartment
The fuse box is located behind a cover in
the dashboard on the front passenger side.
1CoverOpening
Open the front passenger door.
Open the glove box (page 279).
Insert flat, blunt object as a lever into
the edge of the cover1 at the position
indicated by the arrow.
Loosen cover1 from dashboard using
lever.
Using your hands, pull cover1 out
and remove.
Closing
Hook cover1 into the opening at the
front.
Press cover1 back on until it engag-
es.
Emergency engine shut-down
If the engine cannot be turned off as de-
scribed in the “Getting started” section
(
page 66), you may use the following
emergency procedure.
Take the fuse chart from the vehicle
tool kit (
page 450).
Open the fuse box in engine compart-
ment (
page 505).
Remove fuse 120.
Find its location in the fuse chart.
!Do not use sharp objects such as a screw-
driver to open the fuse box cover1 in the dash-
board, as this could damage the fuse box cover
or the dashboard.

507 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main Dimensions
Weights
Fuels, coolants, lubricants

511 Technical data
Identification labels
4Seat cushion
5Floor cover
6VIN
Fold the seat cushion4 forward
(
page 270).
Fold floor cover5 in direction of the
arrow.
The VIN6 is now visible.7Emission control information label,
includes both federal and California
certification exhaust emission
standards
8Engine number (engraved on engine)
9VIN (lower edge of windshield)
iWhen ordering parts, please specify vehicle
identification and engine numbers.

513 Technical data
Engine
Engine
ModelML 320 CDI (164.1221)
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for the corresponding data of all special bodies and special
equipment.
ML 350 (164.1861)
Engine642272
Mode of operationDiesel 4-stroke engine4-stroke engine, gasoline injection
No. of cylinders66
Bore3.27 in (83.00 mm)3.66 in (92.90 mm)
Stroke3.62 in (92.00 mm)3.38 in (86.00 mm)
Total piston displacement182 cu in (2987 cm3)213 cu in (3498 cm3)
Compression ratio17.7:110.7:1
Output acc. to SAE J 1349215 hp/4000 rpm
(160 kW/4000 rpm)268 hp/6000 rpm2
(200 kW/6000 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
Maximum torque acc. to SAE J 1349400 lb-ft/1600 - 2400 rpm
(543 Nm/1600 - 2400 rpm)258 lb-ft/2400 - 5000 rpm
(350 Nm/2400 - 5000 rpm)
Maximum engine speed4500 rpm6500 rpm
Firing order1-4-2-5-3-61-4-3-6-2-5
Poly-V-belt2 035 mm2 404 mm

514 Technical data
Engine
ModelML 550 (164.1751)
1All data preliminary. The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for the corresponding data of all special
bodies and special equipment.
ML 63 AMG (164.1772)
2The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for the corresponding data of all special bodies and special
equipment.
Engine273156
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders88
Bore3.86 in (98.00 mm)4.02 in (102.20 mm)
Stroke3.56 in (90.50 mm)3.72 in (94.60 mm)
Total piston displacement333.2 cu in (5461 cm3)378.8 cu in (6208 cm3)
Compression ratio10.7:111.3:1
Output acc. to SAE J 1349382 hp/6000 rpm3
(285 kW/6000 rpm)
3Premium fuel required. Performance may vary with fuel octane rating.
503 hp/6800 rpm3
(375 kW/6800 rpm)
Maximum torque acc. to SAE J 1349391 lb-ft/2800 - 4800 rpm
(530 Nm/2800 - 4800 rpm)465 lb-ft/5200 rpm
(630 Nm/5200 rpm)
Maximum engine speed6500 rpm7200 rpm
Firing order1-5-4-2-6-3-7-81-5-4-2-6-3-7-8
Poly-V-belt2 404 mm2 360 mm