engine oil MERCEDES-BENZ R350 2006 W251 Owner's Manual

ContentsLoading .............................................. 279
Roof rack* .................................... 279
Loading instructions ..................... 280
Cargo tie-down rings .................... 281
Hooks ........................................... 282
Expanding cargo compartment .... 283
Cargo compartment cover blind* . 288
Partition net* ............................... 290
Useful features .................................. 294
Storage compartments................. 294
Parcel nets ................................... 298
Cup holders .................................. 299
Ashtrays* ..................................... 302
Cigarette lighter* ......................... 305
Power outlets ............................... 306
Rear center console* ................... 308
Telephone*................................... 310
Tele Aid* ...................................... 311
Garage door opener* ................... 320
Compass ...................................... 327
Floormats* ................................... 328
Infrared reflecting windshield* ..... 328
Operation......................................... 329
The first 1000 miles (1500 km) ......... 330
Driving instructions............................ 331
Drive sensibly – save fuel ............. 331
Drinking and driving ..................... 331
Pedals .......................................... 331
Power assistance ......................... 331
Brakes .......................................... 332
Driving off .................................... 333
Parking ......................................... 334
Tires ............................................. 334
Hydroplaning ................................ 335
Tire traction.................................. 335
Tire speed rating .......................... 336
Winter driving instructions ........... 337
Standing water ............................. 338
Passenger compartment .............. 338
Driving abroad.............................. 339
Control and operation of radio
transmitters ................................. 339
Catalytic converter ....................... 340
Emission control .......................... 340
Coolant temperature .................... 341At the gas station .............................. 342
Refueling ...................................... 342
Check regularly and before a
long trip ....................................... 343
Engine compartment ......................... 345
Hood ............................................ 345
Engine oil ..................................... 346
Transmission fluid level................ 350
Coolant level ................................ 351
Windshield / rear window washer
system and headlamp cleaning
system* ....................................... 352
Tires and wheels................................ 353
Important guidelines .................... 353
Tire care and maintenance........... 354
Direction of rotation..................... 356
Loading the vehicle ...................... 356
Recommended tire inflation
pressure ....................................... 363
Checking tire inflation pressure ... 365
Tire labeling ................................. 375
Load identification ....................... 380
DOT, Tire Identification Number
(TIN) ............................................. 380
Maximum tire load ....................... 382
Maximum tire inflation pressure .. 382

ContentsTechnical data.................................. 507
Parts service ...................................... 508
Warranty coverage ............................. 509
Loss of Service and Warranty
Information Booklet...................... 509
Identification labels............................ 510
Layout of poly-V-belt drive ................. 512
Engine ................................................ 513
Rims and tires .................................... 514
Same size tires ............................. 516
Spare wheel (collapsible tire) ....... 517
Electrical system................................ 518
Main Dimensions ............................... 519
Weights .............................................. 520Fuels, coolants, lubricants, etc. ......... 521
Capacities .................................... 521
Engine oils.................................... 523
Engine oil additives ...................... 523
Air conditioning refrigerant .......... 523
Brake fluid .................................... 523
Premium unleaded gasoline ......... 524
Fuel requirements ........................ 524
Gasoline additives ........................ 525
Coolants....................................... 525
Windshield washer and headlamp
cleaning* system ......................... 528
Technical terms............................... 529Index................................................. 535

116 Controls in detailLocking and unlocking
Important notes on using KEYLESS-GO*

You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 110).


You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the ‹button).


Always carry the SmartKey with
KEYLESS-GO with you.


Never store the SmartKey with
KEYLESS-GO together with

electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO


metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.


To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of the respective
door or the tailgate.


In order to start the engine with the
SmartKey with KEYLESS-GO:

The SmartKey with KEYLESS-GO
must be located in the vehicle.


All doors must be closed.


The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.
iCanada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause
interference, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.iYou can also open and close the power
windows (
page 248) and tilt/sliding
sunroof* (page 255), or the
tilt/sliding panel* (
page 259) using
the SmartKey with KEYLESS-GO.

165 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Standard display
AUDIO
NAV*
Airmatic/
Compass
Vehicle status message
memory
(page 168)
(page 170)
(page 172)
(page 172)
(page 173)
Commands/submenusTrip- and main odometer
Selecting radio station
Show route guidance
instructions, current
direction traveled
Airmatic*
Calling up vehicle malfunction,
warning and system status
messages stored in memory
Checking tire inflation pressure*
Selecting satellite ra-
dio station* (USA only)
Compass
Checking coolant temperature
Operating CD player
Calling up digital speedometer or
outside temperatureCalling up maintenance service
indicatorChecking engine oil leveliThe headings used in the menus table
are designed to facilitate navigation
within the system and are not neces-
sarily identical to those shown in the
control system displays. The first func-
tion displayed in each menu will auto-
matically show you which part of the
system you are in.

168 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.
You can select the functions in the
standard display menu with
buttonkorj.The following functions are available:Checking coolant temperature
Function
Page
Checking tire inflation pressure*
371
Checking coolant temperature
168
Calling up digital speedometer or
outside temperature
169
Calling up maintenance service
indicator
393
Checking engine oil level
(R 500 only)
347
Warning!
G


Driving when your engine is badly over-
heated can cause some fluids which
may have leaked into the engine com-
partment to catch fire. You could be se-
riously burned.


Steam from an overheated engine can
cause serious burns and can occur just
by opening the hood. Stay away from
the engine if you see or hear steam com-
ing from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.

343 Operation
At the gas station

Replace the fuel cap by turning it clock-
wise until it audibly engages.

Close the fuel filler flap.
Check regularly and before a long trip
Open the hood (
page 345).
1Coolant level
2Brake fluid
3Windshield washer system and
headlamp cleaning system*
Engine oil level
For more information on engine oil, see
“Engine oil” (
page 346).
iOnly use premium unleaded gasoline
with a minimum Posted Octane Rating
of 91 (average of 96 RON / 86 MON).
Information on gasoline quality can
normally be found on the fuel pump.
For more information on gasoline, see
the Factory Approved Service Products
pamphlet.
iLeaving the engine running and the fuel
cap open can cause the yellow fuel
tank reserve warning lamp to flash and
the? malfunction indicator lamp
(USA only) or the± malfunction in-
dicator lamp (Canada only) comes on.
For more information, see “Practical
hints” (
page 408).

346 OperationEngine compartment
Closing
Let the hood drop from a height of
approximately 1 ft (30 cm).
The hood will lock audibly.

Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the headlamps, then it is not
properly closed. Open it again and let it
drop with somewhat greater force.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Increased oil consumption
can occur when

the vehicle is new


the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
If you see flames or smoke coming from the
engine compartment, or if the coolant tem-
perature gauge indicates that the engine is
overheated, do not open the hood. Move
away from vehicle and do not open the hood
until the engine has cooled. If necessary,
call the fire department.Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components (ig-
nition coils, spark plug sockets, diagnostic
socket) of the ignition system

with the engine running


while starting the engine


if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.!Do not push the hood closed manually,
as this could damage it.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz may
cause damage not covered by the
Mercedes-Benz Limited Warranty.
More information on this subject is
available at any Mercedes-Benz Light
Truck Center.


347 Operation
Engine compartment
Checking engine oil level with the
control system (R 500 only)
When checking the oil level

the vehicle must be parked on level
ground


with the engine at operating tempera-
ture, the vehicle must have been
stationary for at least 5 minutes with
the engine turned off


with the engine not at operating tem-
perature yet, the vehicle must have
been stationary for at least 30 minutes
with the engine turned off
To check the engine oil level via the
multifunction display, do the following:

Switch on the ignition (
page 38).
The standard display (
page 168) should
appear in the multifunction display.

Press buttonk orj on the
steering wheel until the following
message appears in the multifunction
display:
One of the following messages will
subsequently appear in the indicator:

Engine oil level ok


Add 1.0 qt. to reach max. oil
level(Canada:
1.0 liter
)


Add 1.5 qts. to reach max. oil
level(Canada:
1.5 liters
)


Add 2.0 qts. to reach max. oil
level(Canada:
2.0 liters
)

If necessary, add engine oil.
For adding engine oil, see (
page 523).
For more information on engine oil, see the
“Technical data” section (
page 521) and
(
page 523).
Other display messages
If the SmartKey is not turned to position2
in the starter switch, the following
message will appear:
Switch ignition on
to check engine oil level
Switch on the ignition (
page 38).
iIf you want to interrupt the checking
procedure, press thek orj
button on the multifunction steering
wheel.

348 OperationEngine compartmentIf you see the message:Observe waiting period
If engine is at operating temperature,
wait 5 minutes before repeating check
procedure.

If engine is not at operating tempera-
ture, wait 30 minutes before repeating
check procedure.
If you see the message:
Engine oil level
Not when engine on
Turn off the engine.

If the engine is at operating tempera-
ture, wait 5 minutes before checking
oil.

If the engine is not at operating temper-
ature yet, you must wait 30 minutes
before checking oil.If there is excess engine oil with the engine
at operating temperature, the following
message will appear:
Engine oil level
Reduce oil level
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Light Truck Center.
For more information on messages in the
display concerning engine oil, see the
“Practical hints” section (
page 437).Checking engine oil level with the oil
dipstick (R 350 only)
When checking the oil level


the vehicle must be parked on level
ground


with the engine at operating tempera-
ture, the vehicle must have been
stationary for at least 5 minutes with
the engine turned off


with the engine not at operating tem-
perature yet, the vehicle also must
have been stationary for at least
5 minutes with the engine turned off
!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.

349 Operation
Engine compartment
To check the engine oil level with the oil
dipstick, do the following:
Open the hood (
page 345).
1Oil dipstick
2Upper mark
3Lower mark

Pull out oil dipstick1.

Wipe oil dipstick 1 clean.

Fully insert oil dipstick1 into the
dipstick guide tube.

Pull out oil dipstick1 again after
approximately 3 seconds to obtain
accurate reading.The oil level is correct when it is between
lower mark 3 (min.) and upper mark 2
(max.) mark of the oil dipstick.

If necessary, add engine oil.
For more information on engine oil, see
“Technical data” section (
page 521) and
(
page 523).
See the “Practical hints” section
(page 437) if the low engine oil level
warning lamp in the instrument cluster
flashes.Adding engine oiliThe filling quantity between the upper
and lower marks on the oil dipstick is
approximately 2.1 US qt. (2.0 l).
!Only use approved engine oils and oil
filters required for vehicles with Main-
tenance System (U.S. vehicles) or
FSS PLUS (Canada vehicles). For a list-
ing of approved engine oils and oil fil-
ters, refer to the Factory Approved
Service Products pamphlet in your ve-
hicle literature portfolio, or contact an
authorized Mercedes-Benz Light Truck
Center.
Using engine oils and oil filters of spec-
ification other than those expressly re-
quired for the Maintenance System
(U.S. vehicles) or FSS PLUS (Canada
vehicles), or changing of oil and oil filter
at change intervals longer than those
called for by the Maintenance System
(U.S. vehicles) or FSS PLUS (Canada
vehicles) will result in engine damage
not covered by the Mercedes-Benz
Limited Warranty.