2008 MERCEDES-BENZ R320 engine coolant

542 Technical data
Fuels, coolants, lubricants, etc.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification are used to
renew the coolant concentration or bring it
back up to the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Light Truck
Center.To provide important corrosion protection,
the solution must be at least
50% anticorrosion/antifreeze (equivalent
to freeze protection to approximately
-35°F [-37°C]). If you use a solution that is
more than 55% anticorrosion/antifreeze
(freeze protection to approximately
-49°F [-45°C]), the engine temperature
will increase due to the lower heat transfer
capability of the solution.
Therefore, do not use more than this
amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance with label
instructions.The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality,
consult an authorized Mercedes-Benz
Light Truck Center.

543 Technical data
Fuels, coolants, lubricants, etc.
Anticorrosion/antifreeze
Your vehicle contains a number of
aluminum parts. The use of aluminum
components in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be
specifically formulated to protect the aluminum parts. Failure to use such anti-
corrosion/antifreeze coolant will result in
a significantly shortened service life.
Therefore, the following product is strongly
recommended for use in your vehicle:
MB 325.0 Anticorrosion/Antifreeze agent.Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Light Truck Center for service.
Anticorrosion/antifreeze quantity
Approximate freeze protection
Model-35°F (-37°C)-49°F (-45°C)
R 320 CDI 4MATIC5.0 US qt (4.75 l)5.5 US qt (5.2 l)
R 3501
1USA only.
5.0 US qt (4.75 l)5.5 US qt (5.2 l)
R 350 4MATIC5.0 US qt (4.75 l)5.5 US qt (5.2 l)
R 550 4MATIC2
2Canada only.
5.6 US qt (5.25 l)6.1 US qt (5.8 l)

544 Technical data
Fuels, coolants, lubricants, etc.
Windshield washer system and
headlamp cleaning system*
Both the windshield washer system and
headlamp cleaning system* are supplied
from the windshield washer reservoir.
The windshield washer reservoir has a ca-
pacity of approximately 8.0 US qt (7.6 l).
Refill the reservoir with MB Windshield
Washer Concentrate “MB SummerFit”
and water (or concentrate and com-
mercially available premixed wind-
shield washer solvent/antifreeze,
depending on ambient temperatures).Windshield and headlamp washer fluid
mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and water:

1 part “MB SummerFit” to 100 parts
water
(1.34 fl oz [40 ml] “MB SummerFit” to
1gal [4.0l] water)
For temperatures below freezing point,
use MB Windshield Washer Concentrate
“MB SummerFit” and commercially
available premixed windshield washer
solvent/antifreeze:

1 part “MB SummerFit” to 100 parts
solvent
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gal [4.0 l] solvent)Warning!G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts, because it may ignite
and burn. You could be seriously burned.

551 Index
Engine coolant see Coolant
Engine oil 358, 538
Adding 359, 538
Additives 538
Changing 359, 538
Checking level 358
Consumption 358
Filler neck 359
Recommended engine oils and
filters 538
ESP
®101
Messages in the multifunction
display 435–436
Warning lamp 27, 419
ETD 85
Safety guidelines 74
ETS/4-ETS 103
Extending cargo compartment 292
Exterior rear view mirrors 48, 203
Power folding* 204
Synchronizing 204F
Fastening the seat belts 50
Filler neck, Engine oil 359
First aid kit 467
Flat tire 492
Collapsible tire 471, 498, 532
Jacking up the vehicle 493
Lowering the vehicle 501
Mounting the spare wheel 498
Preparing the vehicle 493
Spare wheel 471, 498, 532
Floormats 335
Fluids
Automatic transmission
fluid 360, 536
Brake fluid 355, 536, 539
Capacities 536
Engine coolant 355, 360, 537, 541
Engine oil 358, 536, 538
Power steering fluid 536
Windshield washer and headlamp
cleaning* system 362, 538Fog lamp, Front see Corner-illuminating
front fog lamps*
Fog lamp, Rear 147
Messages in the multifunction
display 458
Replacing bulbs 480
Fog lamps 146
4MATIC see Permanent four-wheel
drive 281
Front air bags 75
Front defroster 214, 229
Front lamps see Headlamps
Front passenger front
air bag 75, 77, 82, 425
Front passenger front air bag
off indicator lamp 31, 75, 77, 82, 425
Front seat head restraints see
Head restraints
Front towing eye 515

552 Index
Fuel 352, 537, 539
Additives 540
Capacities, Fuel tank 537
Consumption statistics 185
Filling the tank 352
Fuel filler flap and cap 352
Fuel gauge 29
Fuel reserve warning lamp 29, 424
Premium unleaded
gasoline 352, 539, 540
Requirements, Octane rating 540
Fuel cap
Messages in the multifunction
display 452
Fuel filler flap 352
Locking/unlocking 352
Opening 352
Opening in an emergency 475
Fuels, coolants, lubricants etc. 536Fuses 518
Fuse box, Cargo compartment 519
Fuse box, Engine compartment 519
Fuse box, Passenger
compartment 520
Fuse chart 467, 518
Fuse extractor 467, 518
Replacing 518
Spare fuses 467, 518
G
Garage door opener 329
Gasoline see Fuel
GAWR 394
Gear range
Automatic transmission 199
Limiting 199
Shifting into optimal 202Gear selector lever 25, 53, 190
Gearshift pattern 53, 190
Message in the display 437
Messages in the multifunction
display 437
Position 193
Shifting procedure 193
Transmission position 194
Global locking/unlocking see
Key, SmartKey
Glove box 304
Good visibility 203
Gross Axle Weight Rating see GAWR
Gross Trailer Weight see GTW
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GTW 394
GVW 394
GVWR 394

557 Index
Multifunction display
messages 427–466
ABS 429, 436
AIRMATIC* 465
Brake fluid 447
Brake pads 445
Coolant 448–450
Cruise control 430
Doors 452
EBP 446
Engine coolant 448–450
ESP
®435, 436
Fog lamps, Front 456
Fog lamps, Rear 458
Front passenger front air
bag 438–441
Fuel cap 452
Gear selector lever 437
Headlamps 455–460
Hood 452
Key, SmartKey 454
Key, SmartKey with
KEYLESS-GO* 453, 454Lamps 457
Lamps, exterior 455
Low tire pressure 442, 462, 463
Parking brake 446
Parking lamps 458
SmartKey with KEYLESS-GO* 453
SRS 437
Tele Aid* 461
Telephone* 461
Windshield washer fluid 461
Multifunction steering wheel 30, 158
Button operation 158
N
Navigation system* 167
See separate COMAND system
operating instructions
Net, Cargo* 301
Net, Parcel 307
Neutral gear position, Automatic
transmission 190, 194
New vehicle, Break-in period 338
Night security illumination 146, 179
Normal occupant weight 395
Number, Vehicle Identification
(VIN) 524, 525O
Occupant Classification System see OCS
Occupant distribution 395
Occupant safety 70
Active head restraint 86
Air bags 72
Children and air bags 73, 89
Children in the vehicle 87
Fastening the seat belts 50
Front passenger front air bag off
indicator lamp 77, 81, 82
Infant and child restraint systems 88
LATCH-type child seat anchors 91
OCS 77
OCS, Messages in the multifunction
display 438–441
Seat belts 50, 74
OCS 77
Messages in the multifunction
display 438
Self-test 82

563 Index
Technical data 538
Air conditioning refrigerant 538
Brake fluid 537, 539
Coolant 537, 541
Dimensions, Vehicle 534
Electrical system 533
Engine 527
Engine oil 536, 538
Engine oil additives 538
Fuel requirements 540
Fuels, coolants, lubricants, etc. 536
Gasoline additives 540
Premium unleaded gasoline 539
Rims 529
Tires 529
Weights 535
Windshield washer and headlamp
cleaning* system 538, 544
Tele Aid* 322
Call priority 328
Emergency calls 323
Hands-free microphone 33
Information 326
Initiating an emergency call
manually 324Messages in the multifunction
display 461
Remote door unlock 328
Roadside Assistance 325
SOS button 324
Stolen Vehicle Recovery
services 329
System self-check 323
Telephone* 319
Answering a call 188
Changing mobile phone cradle 321
Dialing a number from the phone
book 188
Ending a call 188
Hands-free microphone 33
Inserting in cradle 320
Installing a different mobile phone
cradle 321
Messages in the multifunction
display 461
Operation 187
Phone book* 188
Redialing 189
Rejecting an incoming call 188
Removing from cradle 321Temperature
Coolant 164
Display mode, Status indicator 175
Interior temperature, setting see Cli-
mate control or Automatic climate
control (3-zone)*
Outside temperature 165
Sensor, Interior temperature 225
Sensor, Outside temperature 155
Tether attachment points
Children in the vehicle 87
3-zone automatic climate control* 222
Ticket holder 309
Tie-down rings 290
Tightening torque, Wheel bolts 501
Tilt/sliding panel* see Panorama roof with
power tilt/sliding panel*
Tilt/sliding sunroof* see Power tilt/sliding
sunroof*
Time 176
TIN 388, 395
Tire and Loading Information
Placard 367
Terminology 393
Tire Identification Number see TIN
Tire inflation pressure