coolant level MERCEDES-BENZ G55AMG 2007 W463 Owner's Manual

Contents
Operation......................................... 243
The first 1 000 miles (1 500 km) ......... 244
Driving instructions ............................ 245
Drive sensibly – save fuel ............. 245
Drinking and driving ..................... 245
Pedals .......................................... 245
Power assistance ......................... 246
Brakes .......................................... 246
Driving off..................................... 247
Parking ......................................... 248
Tires ............................................. 248
Hydroplaning ................................ 249
Tire traction .................................. 249
Tire speed rating .......................... 250
Winter driving instructions ........... 251
Standing water ............................. 252
Passenger compartment .............. 252
Off-road driving ............................ 253
Driving abroad .............................. 261
Control and operation of radio
transmitters.................................. 261
Catalytic converter ....................... 262
Emission control........................... 263
Coolant temperature .................... 263At the gas station .............................. 264
Refueling ...................................... 264
Check regularly and before
a long trip ..................................... 265
Engine compartment ......................... 267
Hood ............................................ 267
Engine oil ..................................... 269
Transmission fluid level ................ 273
Coolant level ................................ 274
Windshield/rear window washer
system and headlamp cleaning
system ......................................... 275
Tires and wheels ................................ 277
Important guidelines .................... 277
Tire care and maintenance ........... 278
Direction of rotation ..................... 280
Loading the vehicle ...................... 280
Recommended tire inflation
pressure ....................................... 286
Checking tire inflation pressure ... 288
Tire labeling.................................. 294
Load identification ....................... 298
DOT, Tire Identification Number
(TIN) ............................................. 299Maximum tire load ....................... 300
Maximum tire inflation pressure .. 301
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 302
Tire ply material ........................... 304
Tire and loading terminology ........ 304
Rotating tires ............................... 307
Winter driving .................................... 309
Winter tires .................................. 309
Block heater (Canada only) .......... 310
Snow chains................................. 310
Maintenance...................................... 311
Maintenance service indicator
message ...................................... 311
Calling up the maintenance
service indicator display .............. 313
Resetting the maintenance
service indicator .......................... 313
Vehicle care....................................... 314
Cleaning and care of the vehicle .. 314

61 Getting started
Driving
Problems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.

The engine electronics may not be
operating properly.

Unburned gasoline may have entered
the catalytic converter and damaged it.
Give very little gas.
Have the problem repaired at an
authorized Mercedes-Benz Light Truck
Center as soon as possible.The coolant temperature is above
248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.
Stop the vehicle in a safe location as
soon as possible and turn off the
engine. Allow engine and coolant to
cool off.
Check the coolant level and add
coolant if necessary (
page 274).In case of accident
If the vehicle is leaking fuel:
Do not start the engine under any
circumstances.
Notify local fire and/or police
authorities.
If the extent of the damage cannot be
determined:
Contact an authorized Mercedes-Benz
Light Truck Center or call Roadside
Assistance.
If no damage can be determined on the

major assemblies

fuel system

engine mount:
Start the engine in the usual manner.
iExcessive coolant temperatures trigger a
warning message in the multifunction display
(
page 348).

266 Operation
At the gas station
G55AMG
1Coolant
2Brake fluidBrake fluid
Coolant
For normal replenishing, use water
(potable water quality).
For more information, see “Coolant level”
(
page 274) and see “Fuels, coolants, lu-
bricants, etc.” (
page 422).Engine oil level
For more information on engine oil, see
“Engine oil” (
page 269).
Windshield/rear window washer sys-
tem and headlamp cleaning system
For more information on refilling the
washer reservoir, see “Windshield/rear
window washer system and headlamp
cleaning system” (
page 275).
Vehicle lighting
Check function and cleanliness.
For information on replacing light bulbs,
see “Replacing bulbs” (
page 377).
For more information, see “Exterior lamp
switch” (
page 117).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 288).
!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 “Practical hints”
(
page 326) and see “Brake fluid”
(
page 425).

274 Operation
Engine compartment
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze.
When checking the coolant level,

the vehicle must be parked on level
ground

the coolant temperature must be be-
low 158°F (70°C)The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1Cap
Warning!G
In order to avoid any potentially serious
burns:

Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature display
indicates that the coolant is overheated.

Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.

Using a rag, slowly open the cap
approximately 1/2turn to relieve excess
pressure. If opened immediately, scald-
ing hot fluid and steam will be blown out
under pressure.

Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene
glycol which may burn if it comes into
contact with hot engine parts.

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.

347 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
;(USA only)
! (Canada only)
Release
parking
brakeYou are driving with the parking brake
set.Release the parking brake
(
page 55).
2Brake
wearThe brake pads have reached their wear
limit.Have the brake pads replaced as
soon as possible.
BTop up
coolant
See
Operator’s
ManualThe coolant level is too low.Add coolant (page 274).
If you have to add coolant frequently,
have the cooling system checked at
an authorized Mercedes-Benz Light
Truck Center.
!Brake pad thickness must be visually
checked by a qualified technician at the intervals
specified in the Maintenance Booklet.
Warning!G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You could be seriously burned.
!Do not ignore the low engine coolant level
warning. Extended driving with this message and
symbol displayed may cause serious engine
damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant
in the cooling system. The engine will overheat,
causing major engine damage.

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).

428 Technical data
Fuels, coolants, lubricants, etc.
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for
replacement interval.
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
solution or other Mercedes-Bent 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,
contact an authorized Mercedes-Benz
Light Truck Center.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
anticorrosion/antifreeze coolant will
result in a significantly shortened service
life.
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz
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.

434 Index
Cargo tie-down rings 209
Carpets, Cleaning 321
Catalytic converter 262
CD changer 368
CD player
Operating 143
Center console 30
Front passenger front air bag off
indicator lamp 337
Lower part 31
Upper part 30
Central locking
From inside 107
Switch 107
Switching on/off (control
system) 155
Unlocking from inside 107
Central unlocking
Switch 107
Certification label 412
Charging
Vehicle battery 398
Checking
Coolant level 266, 274
Oil level 266, 269Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System (Advanced TPMS) 289
Checklist
Off-road driving 254
Child safety 78
Infant and child restraint systems 68,
79
LATCH child seat anchors 83
Child safety switch see Blocking of rear
door window operation
Cigarette lighter 222
Cleaning
Gear selector lever 321
Headlamps 177
Headliner 321
Leather upholstery 322
Light alloy wheels 320
Rear Parking Assist sensors 318,
319
Seat belts 321
Steering wheel 321Upholstery 322
Windows 319
Windshield 59
Wiper blades 319
Wood trims 322
Cleaning tires 279
Climate control 182
Adjusting air distribution 186
Adjusting air volume 186
Air conditioning 189
Air recirculation mode 188
Defogging windshield 188
Defrosting 187
Rear window defroster 181
Residual heat utilization (REST) 190
Setting the temperature 185
Windshield defroster 180
Clock 27
Closing
Glove box 215
Hood 269
Tailgate 106
Tilt/sliding sunroof 196, 374
Windows 192
Closing tilt/sliding sunroof
In an emergency 374

435 Index
Cockpit 24
Cold tire inflation pressure 304
COMAND see separate operating
instructions
Combination switch 25, 122
High beam flasher 57, 122
High beam headlamps 122
Turn signals 57
Windshield wipers 58
Control and operation of radio
transmitters 261
Control system 133
Audio menu 141
Convenience submenu 156
Display digital speedometer 140
Display outside temperature 140
Functions 135, 137, 139
Instrument cluster submenu 149
Lighting submenu 151
Menus 136, 137, 139
Multifunction display 133
Multifunction steering wheel 134
NAVI menu 144
Satellite radio (USA only) 142
Selecting radio system 141
Settings menu 146Standard display menu 140
Submenus 135, 137, 139
TEL menu 159
Trip computer menu 157
Vehicle status message memory
menu 144
Vehicle submenu 154
Convenience feature 194
Convenience submenu 156
Activating easy-entry/exit
feature 156
Coolant 274, 427
Adding 275
Anticorrosion/antifreeze
quantity 428
Capacities 422
Checking level 274
Messages in display 347–350
Temperature 263
Temperature gauge 131
Coolant level
Checking 266, 274
Coolant temperature gauge 27
Corner-illuminating front fog lamps 122
Crossing obstacles 258Cruise control 197
Canceling 198
Driving downhill 198
Driving uphill 198
Fine adjustment 199
Message in display 350
Setting current speed 198
Setting speed 199
Cruise control lever 198
Cup holders 219
In front passenger footwell 220
In rear passenger footwell 220
Next to armrest 219
Curb weight 304