MERCEDES-BENZ R350 2008 W251 Owner's Manual

520 Practical hints
Fuses
Fuse box in passenger compartment
The fuse box is located behind a cover in
the dashboard on the passenger side.
Open the front passenger door.
1CoverOpening:
Pull cover1 in direction of arrow.
Closing:
Clip upper end of cover1 into open-
ing.
Push on lower end of cover1 until it
engages.
Emergency engine shut-down
If the engine cannot be turned off as de-
scribed in the “Getting started” section
(
page 66), do the following:
Take the fuse chart from the vehicle
tool kit (
page 467).
Open the fuse box in the engine com-
partment (
page 519).
Remove fuse 120.
Find its location in the fuse chart.
!Do not use sharp objects such as a screw-
driver to open fuse box cover 1, as this could
damage it.
iR 550 4MATIC: Remove fuse 114 to
shut-down the engine. Find its location in the
fuse chart.

521 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, etc.

522 Technical data
The “Technical data” section provides the
necessary technical data for your vehicle.
Parts service
All authorized Mercedes-Benz Light Truck
Centers maintain a stock of Genuine
Mercedes-Benz Parts required for mainte-
nance and repair work. In addition, strate-
gically located parts distribution centers
provide quick and reliable parts service.
More than 300 000 different parts for
Mercedes-Benz models are available.
Genuine Mercedes-Benz Parts are sub-
jected to stringent quality inspections.
Each part has been specifically developed,
manufactured or selected for and adapted
to Mercedes-Benz vehicles.
Therefore, Genuine Mercedes-Benz Parts
should be installed.!The use of non-genuine Mercedes-Benz
parts and accessories not authorized by
Mercedes-Benz could damage the vehicle, which
is not covered by the Mercedes-Benz Limited
Warranty, or could compromise the vehicle’s
durability or safety.

523 Technical data
Warranty coverage
Warranty coverage
Your vehicle is covered under the terms of
the warranties printed in the Service and
Warranty Information booklet. Your
authorized Mercedes-Benz Light Truck
Center will exchange or repair any defec-
tive parts originally installed on the vehicle
in accordance with the terms of the follow-
ing warranties:

New Vehicle Limited Warranty

Emission System Warranty

Emission Performance Warranty

California, Maine, Massachusetts, and
Vermont Emission Control Systems
WarrantyReplacement parts and accessories are
covered by the Mercedes-Benz Parts and
Accessories warranties, copies of which
are available at any Mercedes-Benz Light
Truck Center.Loss of Service and Warranty
Information Booklet
Should you lose your Service and Warranty
Information booklet, have an authorized
Mercedes-Benz Light Truck Center arrange
for a replacement. It will be mailed to you.

524 Technical data
Identification labels
1Certification label (on driver’s B-pillar)
The V
ehicle Identification Number (VIN)
can be found in the following locations:

on the certification label

embossed underneath the
passenger-side seat in the second
seat row (
page 525)

on the lower edge of the windshield
(
page 525)
Example certification label (U.S. vehicles)
2Paintwork code
3VIN
Example certification label
(Canada vehicles)
2Paintwork code
3VIN
iData shown on certification label are for
illustration purposes only. These data are
specific to each vehicle and may vary from data
shown in the illustration. Refer to certification
label on vehicle for actual data specific to your
vehicle.

525 Technical data
Identification labels
4Second-row seat
5VIN
6Carpet
Move second-row seat 4 on pas-
senger side to the rear as far as possi-
ble (
page 134).
Fold carpet 6 in direction of arrow.
You may have to cut the perforated
carpet using a sharp object, e.g. a
knife.7Emission control information label,
includes both federal and California
certification exhaust emission stan-
dards
8VIN (lower edge of windshield)
9Engine number (engraved on engine)
iWhen ordering parts, please specify vehicle
identification and engine number.

526 Technical data
Layout of poly-V-belt drive
R 320 CDI 4MATIC
1Coolant pump
2Idler pulley
3Automatic belt tensioner
4Power steering pump
5Air conditioning compressor
6Crankshaft
7Idler pulley
8Generator (alternator)R 350, R 350 4MATIC, R 550 4MATIC
1Idler pulley
2Idler pulley
3Automatic belt tensioner
4Power steering pump
5Air conditioning compressor
6Crankshaft
7Coolant pump
8Generator (alternator)

527 Technical data
Engine
Engine
ModelR 320 CDI 4MATIC (251.122)1R 350 (251.156)1,2
R 350 4MATIC (251.165)1
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.
2USA only.
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)3.39 in (86.00 mm)
Total piston displacement182 cu in (2 987 cm3)213 cu in (3 498 cm3)
Compression ratio17.7:110.7:1
Output acc. to SAE J 1349215 hp/4 000 rpm
(160 kW/4 000 rpm)268 hp/6 000 rpm3
(200 kW/6 000 rpm)
3Premium fuel required. Performance may vary with fuel octane rating.
Maximum torque acc. to SAE J 1349400 lb-ft/1 600 - 2 400 rpm
(543 Nm/1 600 - 2 400 rpm)258 lb-ft/2 400 - 5 000 rpm
(350 Nm/2 400 - 5 000 rpm)
Maximum engine speed4 500 rpm6500 rpm
Firing order1-4-2-5-3-61-4-3-6-2-5
Poly-V-belt2 035 mm2404 mm

528 Technical data
Engine
ModelR 550 4MATIC (251.172)1,2
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.
2Canada only.
Engine273
Mode of operation4-stroke engine, gasoline injection
No. of cylinders8
Bore3.86 in (98.00 mm)
Stroke3.56 in (90.50 mm)
Total piston displacement333cuin (5461cm3)
Compression ratio10.7:1
Output acc. to SAE J 1349382 hp/6 000 rpm3
(285 kW/6 000 rpm)
3Premium fuel required. Performance may vary with fuel octane rating.
Maximum torque acc. to SAE J 1349391 lb-ft/2 800 - 4 800 rpm
(530 Nm/2 800 - 4 800 rpm)
Maximum engine speed6 500 rpm
Firing order1-5-4-2-6-3-7-8
Poly-V-belt2 404 mm

529 Technical data
Rims and tires
Rims and tires
!Only use tires which have been tested and
approved by Mercedes-Benz. Tires approved by
Mercedes-Benz are developed to provide best
possible performance in conjunction with the
driving safety systems on your vehicle such as
ABS or ESP
®. Tires specially developed for your
vehicle and tested and approved by
Mercedes-Benz can be identified by finding the
following on the tire’s sidewall:

MO = Mercedes-Benz Original equipment
tires
Using tires other than those approved by
Mercedes-Benz may result in damage that is
not covered by the Mercedes-Benz Limited
Warranty.
!Using tires other than those approved by
Mercedes-Benz can have detrimental effects,
such as

poor handling characteristics

increased noise

increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit dimen-
sional variations and different tire deformation
characteristics that could cause them to come
into contact with the vehicle body or axle parts.
Damage to the tires or the vehicle may be the
result.
iFurther information on tires and rims is
available at any authorized Mercedes-Benz Light
Truck Center. A placard with the recommended
tire inflation pressures is located on the driver’s
door B-pillar (
page 366). Some vehicles may
have supplemental tire inflation pressure infor-
mation for driving at high speeds (
page 372)
or for vehicle loads less than the maximum
loaded vehicle condition (
page 372). If such
information is provided, it can be found on the
placard located on the inside of the fuel filler
flap.The tire inflation pressure should be checked
regularly and should only be adjusted on cold
tires. Follow tire manufacturer’s maintenance
recommendation included with vehicle.
iThe following pages also list the approved
wheel rim and tire sizes for equipping your vehi-
cles with winter tires. Winter tires are not avail-
able as standard or optional factory equipment,
but can be purchased from an authorized
Mercedes-Benz Light Truck Center.
Depending on vehicle model and the standard or
optional factory-equipped wheel rim/tire
configuration on your vehicle (Appearance
Package, Sport Package etc.), equipping your
vehicle with winter tires approved for your
vehicle model may also require the purchase of
two or four wheel rims of the recommended size
for use with these winter tires. Contact an
authorized Mercedes-Benz Light Truck Center
for more information.