fuel additives MERCEDES-BENZ R350 2006 W251 Owner's Manual

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

523 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 re-
quired for vehicles with Maintenance Sys-
tem (U.S. vehicles) or FSS (Canada
vehicles). For a listing of approved engine
oils and oil filters, refer to the Factory Ap-
proved Service Products pamphlet, or con-
tact an authorized Mercedes-Benz Light
Truck Center.
Engine oil additives
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.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere.
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Light Truck
Center will provide you with additional in-
formation.
!Using engine oils and oil filters of
specification other than those express-
ly required 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.
Please follow Maintenance System
(U.S. vehicles) or FSS PLUS (Canada
vehicles) recommendations for sched-
uled oil changes. Failure to do so could
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.
Warning!
G
Under extremely strenuous operating condi-
tions, this moisture content can lead to the
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s
Maintenance Booklet for replacement inter-
val.

525 Technical data
Fuels, coolants, lubricants, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives carbon deposits
can build up, especially on the intake
valves and in the combustion area, leading
to engine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking / pinging


Misfire


Power lossIn 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 specific 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 Fac-
tory Approved Service Products pamphlet
are not covered by the Mercedes-Benz
Limited Warranty.
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).

542 IndexEngine malfunction indicator lamp 407,
433
Engine malfunction indicator lamp (Cana-
da only) 27
Engine malfunction indicator lamp (USA
only) 27
Engine number 530
Engine oil 346, 523
Adding 349
Additives 523
Checking level 346
Consumption 346
Display messages 437–438
Messages in display 347, 437–438
Viscosity 530
ESP
®
25, 99, 530
Switching off 101
Switching on 102
Warning lamp 409
ETD 530
Safety guidelines 74
ETD (Emergency tensioning device) 80
Extending cargo compartment 283
Exterior mirrors
Folding 211Exterior rear view mirrors
Adjusting 48
Power folding* 211
Synchronizing 211
F
Fastening the seat belts 50
First aid kit 454
Flat tire 478
Lowering the vehicle 485
Preparing the vehicle 479
Spare wheel 457
Flexible Service System PLUS (FSS
PLUS) 530
Floormats* 328
Fluid level
Automatic transmission 350
Fog lamp, rear
Switching on 151
Fog lamps, front*
Messages in display 442
Replacing bulbs 466
Switching on 151
Folding
Exterior mirrors 2114-ETS 102
Front air bags 75
Front defroster 223, 238
Front fog lamps
Indicator lamp 147
Front lamps
Messages in display 442
Replacing bulbs 466, 468
Front seats
Head restraints 44
Front towing eye 501
Front wiper blades
Installing 476, 477
Removing 475
FSS PLUS (Flexible Service System
PLUS) 530
Fuel 343
Additives 525
Fuel reserve warning lamp 409
Gasoline additives 525
Premium unleaded gasoline 343,
524
Requirements 524
Fuel additives 525
Fuel cap
Message in display 439

543 Index
Fuel consumption statistics
After start 192
Since last reset 193
Fuel filler flap
Locking 342
Opening 461
Unlocking 342
Fuel requirements 524
Fuel tank
Filler flap 342
Fuels, coolants, lubricants etc. 521
Functions (control system) 165
Resetting 176
Fuses 503
Fuse box in cargo compartment 504
Fuse box in passenger
compartment 505
Main fuse box 504
G
Garage door opener* 320
Gasoline additives 525
Gasoline see Fuel
GAWR 386, 530Gear range 530
Automatic transmission 202
Limiting 202
Shifting into optimal 207
Gear range limit
Canceling 207
Gear selector lever
Message in the display 421
Position 200
Position (automatic
transmission) 199
Global
Locking 112
Unlocking 112
Global Positioning System (GPS) 531
Glove box 294
Closing 294
Opening 294
Good visibility 208
GPS 531
Gross Axle Weight Rating see GAWR
Gross Trailer Weight see GTW
Gross Vehicle Weight Rating see GVWRGross Vehicle Weight see GVW
GTW 386
GVW 386, 531
GVWR 386, 531
H
Hard plastic trim items, cleaning 402
Hazard warning flasher 153
Switching off 154
Switching on 154
Head restraints
Front seats 44
Rear seats 139
Headlamp cleaning system* 352
Headlamps
Automatic control 148
Bi-Xenon* 529
Cleaning lenses 399
Cleaning system* 208, 352
Refilling washer fluid 352
Replacing bulbs 466
Switching off 65
Switching on 58
Washer fluid 528
Washer system 528

554 Index
Opening from the outside 122
Unlocking and opening with
KEYLESS-GO* 120
Unlocking with SmartKey 114
Tar stains 396
Technical data 523
Brake fluid 523
Coolants 525
Electrical system 518
Engine 513
Engine oil 523
Engine oil additives 523
Fuel requirements 524
Gasoline additives 525
Main dimensions 519
Premium unleaded gasoline 524
Rims and tires 514
Weights 520
Windshield washer and headlamp
cleaning* system 528
Tele Aid System* 533Tele Aid* 311
Call priority 318
Emergency calls 313
Information 317
Initiating an emergency call
manually 314
Messages in display 450, 451
Remote door unlock 319
Roadside assistance 315
Stolen vehicle recovery services 319
System self-check 312
Telematics* 533
Telephone* 310
Answering a call 195
Dialing a number from the phone
book 195
Ending a call 195
Loading phone book* 195
Messages in the display 451
Operating 194
Redialing 196
Temperature
Setting interior temperature 222,
236
Tires 364
Third-row sunshade* 2143-zone automatic climate control* 230
Ticket holder 300
Tie-down rings (Cargo
compartment) 281
Tightening torque 533
Tightening torque (Wheel bolts) 485
Tilt
Head restraint 45
Tilt/sliding sunroof*
Closing 255
Opening 255
Synchronizing 258
Time
Setting day 181
Setting hours 180
Setting minutes 180
Setting month 181
Setting year 181
TIN 387, 534
Tire
Vehicle maximum load on 388
Tire and Loading Information 357
Tire and loading terminology 385
Tire care and maintenance 354
Tire Identification Number see TIN