Page 378 of 601

377 Operation
At the gas station
Brake fluid
Coolant
For normal replenishing, use water (pota-
ble water quality).
For more information, see “Coolant level”
(
page 381) and see “Fuels, coolants, lu-
bricants” (
page 562).Windshield/rear window washer
system and headlamp cleaning
system*
For more information on refilling the wash-
er reservoir, see “Windshield/rear window
washer system and headlamp cleaning
system*” (
page 383).
Vehicle lighting
Check function and cleanliness. For infor-
mation on replacing light bulbs, see “Re-
placing bulbs” (
page 504).
For more information, see “Exterior lamp
switch” (
page 143).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 395).
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks immediately. Notify an
authorized Mercedes-Benz Light Truck Center
immediately. Do not add brake fluid as this will
not solve the problem. For more information, see
“Brake fluid” (
page 564).
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Page 384 of 601

383 Operation
Engine compartment
Windshield/rear window washer
system and headlamp cleaning
system*
The windshield washer reservoir is located
in the engine compartment.
1Cap for windshield washer reservoir
Fluid for the windshield/rear window
washer system and the headlamp cleaning
system* is supplied from the windshield
washer reservoir. It has a capacity of 8.1
US qt (7.7 l).During all seasons, add MB Windshield
Washer Concentrate “MB SummerFit” to
water. Premix the windshield washer fluid
in a suitable container.
Use the tab to pull cap1 upwards.
Refill the reservoir with MB Windshield
Washer Concentrate “MB SummerFit”
and water (or commercially available
premixed windshield washer sol-
vent/antifreeze, depending on ambient
temperatures).For more information, see “Windshield
washer system and headlamp cleaning
system*” (
page 569).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.
!Always use washer solvent/antifreeze
where temperatures may fall below freezing
point. Failure to do so could result in damage to
the washer system/reservoir.
!Only use washer fluid which is suitable for
plastic lenses. Improper washer fluid can
damage the plastic lenses of the headlamps.
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Page 484 of 601

483 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
4Reserve FuelThe fuel level has gone below the reserve
mark.Refuel at the next gas station
(
page 374).
Ultra Low-sulfur
Diesel Fuel OnlyVehicles with diesel engine only:
The fuel level has gone below the reserve
mark.Refuel at the next gas station
(
page 374).
Only use commercially available
vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM).
L Tele Aid
InoperativeOne or more main functions of the
Tele Aid system are malfunctioning.Have the Tele Aid system checked by
an authorized Mercedes-Benz Light
Truck Center.
Tele Aid
BatteryThe emergency power battery for the
Tele Aid system is malfunctioning. If the
vehicle battery is also malfunctioning or
drained, Tele Aid will not be operational.Have the Tele Aid system checked by
an authorized Mercedes-Benz Light
Truck Center.
tFunction
unavailableThis display appears if buttont
ors on the multifunction steering
wheel is pressed and the vehicle is not
equipped with a telephone.
W Top Up
Washer FluidThe fluid level has dropped to about 1/3 of
total reservoir capacity.Add washer fluid (page 383).
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Page 564 of 601

563 Technical data
Fuels, coolants, lubricants
ModelCapacityFuels, coolants, lubricants, etc.
Front wheel hubsAll modelsapprox. 1.5oz (43g) eachHigh temperature roller bearing grease
Brake systemAll models-MB Brake Fluid (DOT 4+)
Cooling systemGL 320 CDIapprox. 10.0 US qt (9.5 l)MB Anticorrosion/Antifreeze
GL 450approx. 10.6 US qt (10.0 l)MB Anticorrosion/Antifreeze
GL 5501approx. 12.7 US qt (12.0 l)MB Anticorrosion/Antifreeze
Fuel Tank
including a reserve ofAll models26.4 US gal (100.0 l)
approx. 3.4 US gal (13.0 l)Gasoline engine:
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Diesel engine:
ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM)
Air conditioning systemAll models-R-134a refrigerant and special PAG lubricant oil
(never R-12)
Windshield washer system
and headlamp cleaning
system*All models8.1 US qt (7.7 l)MB Windshield Washer Concentrate2
1Data preliminary.2Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing. Follow suggested mixing ratios (page 569).
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Page 570 of 601

569 Technical data
Fuels, coolants, lubricants
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 8.1 US qt (7.7 l).
Refill the reservoir with MB Windshield
Washer Concentrate and water (or con-
centrate and commercially available
premixed windshield washer sol-
vent/antifreeze, depending on ambient
temperatures).Windshield and headlamp washer fluid
mixing ration
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 avail-
able 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.
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Page 579 of 601

578 Index
ETD 89, 446
Safety guidelines 78
Expanding cargo compartment 304
Exterior rear view mirrors 51, 208
Folding 210
Power folding* 209
Synchronizing 209
F
Fastening the seat belts 53
Filler neck, Engine oil 381
First aid kit 490
Flat tire 519
Lifting the vehicle 520
Lowering the vehicle 526
Minispare wheel 494
Mounting the spare wheel 520
Preparing the vehicle 520
Floormats 325Fluids
Automatic transmission fluid 381,
562
Brake fluid 377, 563, 564
Capacities 562
Engine coolant 377, 381, 563, 567
Engine oil 380, 562, 564
Power steering fluid 562
Windshield washer and headlamp
cleaning system* 377, 569
Fog lamps 146
Corner-illuminating front fog
lamps* 147
Messages in the multifunction
display 478
Rear fog lamp 146
Replacing bulbs 510
4-ETS 107
Off-road - 4-ETS 108
Front air bags 79
Front defroster 221, 235
Front lamps see Headlamps
Front passenger front air bag 74, 79
Messages in the multifunction
display 460, 461, 462, 463Front passenger front air bag off indicator
lamp 31, 32, 85
Front seat head restraints see
Head restraints
Front towing eye 540
Fuel 375, 563
Additives 566
Capacities, Fuel tank 563
Consumption statistics 184, 185
Filling the tank 374
Fuel filler flap and cap 374, 497
Fuel gauge 29
Fuel tank reserve warning lamp 29,
446
Premium unleaded gasoline 375,
563, 565
Requirements, Octane rating 565
Fuel cap
Messages in the multifunction
display 474
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Page 585 of 601

584 Index
Multifunction display messages 449
ABS 451
ABS, ESP
®451
Air suspension 486
Air suspension program 486
Brake fluid 469
Brake lamps 477
Brake pads 467
Coolant 472
Corner-illuminating front fog
lamps* 478
Cruise control 452
Distronic* 453
Doors 474
Downhill Speed Regulation 467
EBP 468
Engine coolant 470, 472
ESP
®441
Fog lamps, Front 478
Fog lamps, Rear 480
Front passenger front air bag 460,
461, 462, 463
Fuel cap 474
Headlamps 477, 478, 480, 482
Hood 474Key, SmartKey 476
Key, SmartKey with
KEYLESS-GO* 475, 476
Lamps 477, 478, 479, 480, 482
Low tire pressure 464, 484, 485
Parking brake 468
Parking lamps 480
Tele Aid 483
Telephone* 483
Turn signals 482
Vehicle battery 466
Windshield washer fluid 483
Multifunction steering wheel 30, 156
Button operation 156
N
Navigation system* 166
See separate COMAND System
operating instructions
Net, Cargo* 312
Net, Parcel 319
Neutral gear position, Automatic
transmission 189
New vehicle, Break-in period 346
Night security illumination 146, 176
Normal occupant weight 417
Number, Vehicle Identification (VIN) 550O
Occupant distribution 417
Occupant safety 74
Active head restraint 90
Air bags 76
Children and air bags 77, 91, 93
Children in the vehicle 91
Fastening the seat belt 53
Front passenger front air bag off
indicator lamp 81, 85, 86
Infant and child restraint systems 92
LATCH-type child seat anchors 95
OCS 81
OCS, Messages in the multifunction
display 460, 461, 462, 463
Seat belts 53, 78
OCS 81
Self-test 86
Odometer 153, 155, 162
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Page 591 of 601

590 Index
T
Tachometer 29, 153
Displaying current gear range 197
Overspeed range 153
Tail lamps 511
Cleaning lenses 429
Messages in the multifunction
display 481
Replacing bulbs 505, 513
Tailgate
Closing from the inside,
Electrically* 125
Closing from the outside
(vehicles without
KEYLESS-GO*) 126
Opening from the inside,
Electrically* 124
Opening from the inside,
Manually 122
Opening from the outside 122Tar stains 426
Technical data 547
Air conditioning refrigerant 563, 564
Brake fluid 563, 564
Capacities fuels, coolants, lubricants
etc. 562, 563
Coolant 563, 567
Dimensions, Vehicle 560
Electrical system 559
Engine 553
Engine oil 562, 564
Engine oil additives 564
Fuel requirements 565
Fuels, coolants, lubricants, etc. 562
Gasoline additives 566
Main dimensions 560
Premium unleaded gasoline 565
Rims 555
Tires 555
Weights 561
Windshield washer and headlamp
cleaning* system 563, 569Tele Aid 331
Call priority 337
Emergency calls 333
Hands-free microphone 34
Information 336
Initiating an emergency call
manually 334
Messages in the multifunction
display 483
Remote door unlock 337
Roadside Assistance 335
SOS button 334
Stolen Vehicle Recovery
services 338
System self-check 332
Telephone cradle*
Changing 330
Telephone* 328
Answering/ending a call 187
Changing mobile phone cradle 330
Dialing a number from the phone
book 187
Ending a call or rejecting an incoming
call 187
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