MERCEDES-BENZ R350 2008 W251 Owner's Manual

530 Technical data
Rims and tires
Same size tires
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
R 320 CDI 4MATIC (Sport Package*)
R 350 (Sport Package*)1
R 350 4MATIC (Sport Package*)
R 550 4MATIC2
R 550 4MATIC (Sport Package*)2
Rims (light alloy)8 J x 18 H28Jx19H2
Wheel offset2.64 in (67 mm)2.64 in (67 mm)
All-season tires3255/55 R18 105H M+S255/50 R19 107H XL (Extra Load) M+S
Winter tires3,4255/55 R18 105H M+S.255/50 R19 107H XL (Extra Load) M+S.
1USA only.2Canada only.3Radial-ply tires4Not available as factory equipment.

531 Technical data
Rims and tires
ModelR 320 CDI 4MATIC (Sport Package*)
R 350 (Sport Package*)1
R 350 4MATIC (Sport Package*)
R 550 4MATIC (Sport Package*)2
R 320 CDI 4MATIC*
R350*1
R350 4MATIC*
R550 4MATIC*2
AMG rims (light alloy)8.5Jx19H28.5Jx20H2
Wheel offset2.52 in (64 mm)2.36 in (60 mm)
All-season tires1255/50 R19 107H XL (Extra Load) M+S –
Summer tires3 –265/45 ZR20 104Y
Winter tires3,4255/50 R19 107H XL (Extra Load) M+S. –
1USA only.2Canada only.3Radial-ply tires4Not available as factory equipment.

532 Technical data
Rims and tires
Spare wheel
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
R 550 4MATIC2
1USA only.2Canada only.
Rim (steel)6.5 B x 18 H2
Wheel offset1.58 in (40 mm)
Collapsible tire3
3Must not be used with snow chains.
195/75-18 106P
Recommended tire inflation pressure44 psi (3.0 bar)
!Please compare the recommended tire
inflation pressure for your vehicle with the tire
inflation pressure on the yellow label located on
the spare wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the
collapsible tire to the recommended tire inflation
pressure given on the yellow label on the spare
wheel rim.iPlease note that the tire inflation pressure of
the collapsible tire differs from the tire inflation
pressure of the road tires.

533 Technical data
Electrical system
Electrical system
ModelR 3501
R 350 4MATIC
1USA only.
R 550 4MATIC2
2Canada only.
Generator (alternator)14 V/150 A14 V/180 A
Starter motor12 V/1.4 kW12 V/1.7 kW
Battery12 V/70 Ah12 V/95 Ah
Spark plugsBosch Y7MPP33NGK PLKR7A
Electrode gap0.031 in (0.8 mm)0.031 in (0.8 mm)
Tightening torque15 - 19 lb-ft (20 - 25 Nm)15 - 19 lb-ft (20 - 25 Nm)
ModelR 320 CDI 4MATIC
Generator (alternator)14 V/180 A
Starter motor12 V/2.0 kW
Battery12 V/95 Ah

534 Technical data
Main Dimensions
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
1USA only.
R 550 4MATIC2
2Canada only.
Overall vehicle length203.7 in (5 173 mm)203.7 in (5 173 mm)
Overall vehicle width (exterior mirrors folded out)85.4 in (2 168 mm)85.4 in (2 168 mm)
Overall vehicle width (exterior mirrors folded in)75.7 in (1 922 mm)75.7 in (1 922 mm)
Overall vehicle height3
3Data apply to unladen vehicles with standard equipment. Data may vary in vehicles equipped with AIRMATIC* depending on the
selected damping settings (page 276) and the current vehicle level (page 277).
65.5 in (1 663 mm)65.6 in (1 666 mm)
Wheelbase126.6 in (3 215 mm)126.6 in (3 215 mm)
Track, front64.7 in (1 643 mm)64.7 in (1 643 mm)
Track, rear64.4 in (1 636 mm)64.4 in (1 636 mm)
Ground clearance35.8 in (148 mm)5.9 in (150 mm)
Turning circle40.7 ft (12.4 m)40.7 ft (12.4 m)

535 Technical data
Weights
Weights
Roof load max.220 lb (100 kg)

536 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by
Mercedes Benz.
Please refer to the Factory Approved
Service Products pamphlet (USA only), or
inquire at an Mercedes-Benz Light Truck
Center.
Warning!G
Comply with all valid regulations with re-
spect to handling, storing and disposing of
service fluids. Otherwise you could endan-
ger persons or the environment.
Keep service fluids out of the reach of chil-
dren.
For health reasons, you should prevent
service fluids from coming into direct
contact with your skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filterR 320 CDI 4MATIC9.0 US qt (8.5 l)Approved engine oils
R 3501, R 350 4MATIC
1USA only.
8.5 US qt (8.0 l)
R 550 4MATIC2
2Canada only.
9.5 US qt (9.0 l)
Automatic transmission9.5 US qt (9.0 l)MB Automatic Transmission Fluid
Transfer case0.53 US qt (0.5 l)MB Automatic Transmission Fluid
Rear axle1.2 US qt (1.1 l)Hypoid gear oil
Front axle1.2 US qt (1.1 l)Hypoid gear oil

537 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Power steeringapprox. 1.3 US qt (1.2 l)MB Power Steering Fluid or approved
Dexron III ATF
Front wheel hubsapprox. 1.5 oz (43 g) eachHigh temperature roller bearing grease
Brake systemMB Brake Fluid (DOT 4+)
Cooling systemR 320 CDI 4MATIC10.0 US qt (9.5 l)MB Anticorrosion/Antifreeze
R 3501, R 350 4MATIC
1USA only.
10.0 US qt (9.5 l)
R 550 4MATIC2
2Canada only.
12.7 US qt (12 l)
Fuel tank
including a reserve of21.1 US gal (80.0 l)
approx. 3.4 US gal (13.0 l)Gasoline engine:
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
Diesel engine:
ULTRA-LOW SULFUR HIGHWAY DIESEL
FUEL (15 ppm SULFUR MAXIMUM)

538 Technical data
Fuels, coolants, lubricants, etc.
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.
ModelCapacityFuels, coolants, lubricants, etc.
Air conditioning systemR-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer
system and headlamp
cleaning system*8.0 US qt (7.6 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing point or MB Windshield Washer Concentrate “MB SummerFit”
and commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 544).
!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.

539 Technical data
Fuels, coolants, lubricants, etc.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.Premium unleaded gasoline
(gasoline engine)
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
interval.
Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with gasoline and the in-
halation of gasoline vapors are damaging to
your health.
!To maintain the engine’s durability and
performance, premium unleaded gasoline must
be used. If premium unleaded gasoline is not
available and low octane fuel is used, follow
these precautions:

Have the fuel tank only partially filled with
unleaded regular gasoline and fill up with
premium unleaded gasoline as soon as
possible.

Avoid full throttle driving and abrupt acceler-
ation.

Do not exceed an engine speed of 3 000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed2/3of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.