Page 276 of 457

275 Operation
Engine compartment
Using a rag, turn cap1 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
Continue turning cap1 counterclock-
wise and remove it.
The coolant level is correct if the level
for cold coolant: reaches the top of
the mark (plastic bridge) visible
through the filling opening
for warm coolant: is approximately
0.6 in (1.5 cm) higher
Add coolant as required.
Replace cap1 on the filler neck.
Tighten cap1 clockwise until you
hear it click three times.
For more information on coolant, see
“Coolants” (
page 427).Windshield/rear window washer
system and headlamp cleaning system
The windshield washer reservoir is located
on the passenger side of the engine
compartment.
1CapFluid for the windshield/rear window
washer system and the headlamp cleaning
system is supplied from the windshield
washer reservoir. It has a capacity of
7.9 US qt (7.5 l).
During all seasons, add MB Windshield
Washer Concentrate “MB SummerFit” to
water. Premix the windshield washer fluid
in a suitable container.
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.
Page 305 of 457

304 Operation
Tires and wheels
Tire ply material
1Plies in sidewall
2Plies under tread
This marking tells you about the type of
cord and number of plies in the sidewall
and under the tread.Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or
driven no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.
iFor illustration purposes only. Actual data
on tires are specific to each vehicle and may vary
from data shown in above illustration.
Page 366 of 457
365 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
±Certain electronic systems are unable to
relay information to the control system.
The following systems may have failed:
Coolant temperature display
Tachometer
Cruise control display
Have the electronic systems checked
at an authorized Mercedes-Benz Light
Truck Center.
[Clean
fuel filterContact an authorized Mercedes-Benz
Light Truck Center as soon as possi-
ble.
WTop up
washer fluidThe fluid level has dropped to
about1/3of total reservoir capacity.
Add washer fluid (page 275).
Page 424 of 457
423 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filterG 500
G55AMG8.5 US qt (8.0 l)
9.0 US qt (8.5 l)Approved engine oils
Automatic transmission9.0 US qt (8.5 l)MB Automatic Transmission Fluid
Transfer case2.96 US qt (2.8 l)MB part no. A 001 989 28 03 10
Differential lock mechanism0.47 - 0.63 US qt (0.45 - 0.6 l)Brake fluid DOT 3+4, SAE J 1703
Front axleG 500
G55AMG1.5 US qt (1.4 l)
1.5 US qt (1.4 l)Hypoid gear oil SAE 85W-90
Hypoid gear oil Castrol SAF-XJ
Rear axleG 500
G55AMG1.9 US qt (1.8 l)
1.9 US qt (1.8 l)Hypoid gear oil SAE 85W-90
Hypoid gear oil Castrol SAF-XJ
Power steeringapprox. 1.06 US qt (1.0 l)MB Power Steering Fluid, or
approved Dexron III ATF
Front wheel hubsapprox. 1.5oz (43g) eachHigh temperature roller bearing grease
Brake system0.86 US qt (0.81 l)MB Brake Fluid (DOT 4+)
Page 425 of 457
424 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Fuel tank
including a reserve ofG500
G55AMG25.4 US gal (96.0 l)
25.1 US gal (95.0 l)
approx. 3.4 US gal (13.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Cooling systemG500
G55AMGapprox. 12.7USqt (12.0l)
approx. 13.4USqt (12.7l)MB 325.0 Anticorrosion/Antifreeze
Air conditioning systemR-134a refrigerant and
special PAG lubricant oil (never R-12)
Windshield/rear window washer system
and headlamp cleaning systemapprox. 7.9 US qt (7.5 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 430).
Page 431 of 457

430 Technical data
Fuels, coolants, lubricants, etc.
Windshield/rear window washer
system and headlamp cleaning system
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
7.9 US qt (7.5 l).
The windshield washer reservoir is located
on the passenger side of the engine com-
partment (
page 275).
Refill the washer reservoir with
MB Windshield Washer Concentrate
“MB SummerFit” and water
(or concentrate and commercially
available premixed windshield washer
solvent/antifreeze, depending on
ambient temperatures).Windshield/rear window 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
(1.34floz [40ml] “MBSummerFit” 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
(1.34floz [40ml] “MBSummerFit” 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.
Page 439 of 457

438 Index
F
Fastening the seat belts 48
Fine adjustment
Cruise control 199
First aid kit 366
Flat tire 390
Lifting the vehicle 391
Lowering the vehicle 394
Mounting the spare wheel 391
Spare wheel 368
Floormats 224
Fog lamp, rear 121, 378
Fog lamps
Corner-illuminating front fog
lamps 122
Fog lamps, front 121
4-ETS 88, 91
Front air bags 73
Front axle differential lock
Switching on 176
Front fog lamps
Messages in display 355
Replacing bulbs 378, 382
Front lamps
Replacing bulbs 378, 380
Switching on 117Front passenger front air bag off indicator
lamp 81, 337
Front seat head restraints
Installing 109
Removing 108
Front towing eye 404
Front turn signal lamp
Replacing bulbs 383
Fuel 265
Additives 427
Gasoline additives 427
Message in display 365
Premium unleaded gasoline 265,
424, 426
Refueling 264
Requirements 426
Reserve warning 27
Technical data 422
Fuel additives 427
Fuel consumption statistics
Since last reset 158
Since start 157
Fuel filler cap
Message in display 353Fuel filler flap 264
Locking 264
Opening 372
Unlocking 264
Fuel requirements 426
Fuel reserve tank
Message in display 353
Fuel reserve warning lamp 331
Fuel tank
Capacity 424
Filler flap 264
Fuels, coolants, lubricants, etc.
Capacities 422
Functions (control system) 135, 137,
139
Fuse box 406, 407, 408
Fuses 405
Fuse box in battery box 408
Fuse box in front passenger
footwell 406
Fuse box in middle tunnel 407
Main fuse box in passenger
compartment 406