2006 MERCEDES-BENZ G55AMG coolant level

Contents
Operation......................................... 217
The first 1000 miles (1500 km) ......... 218
Driving instructions ............................ 220
Drive sensibly – save fuel ............. 220
Drinking and driving ..................... 220
Pedals .......................................... 220
Power assistance ......................... 221
Brakes .......................................... 221
Driving off..................................... 222
Parking ......................................... 222
Tires ............................................. 223
Hydroplaning ................................ 224
Tire traction .................................. 224
Tire speed rating .......................... 225
Winter driving instructions ........... 225
Standing water ............................. 226
Passenger compartment .............. 227
Off-road driving ............................ 227
Control and operation of
radio transmitters......................... 235
Driving abroad .............................. 236
Catalytic converter ....................... 236
Emission control........................... 237
Coolant temperature .................... 238At the gas station .............................. 239
Refueling ...................................... 239
Check regularly and before
a long trip ..................................... 240
Engine compartment ......................... 242
Hood ............................................ 242
Engine oil ..................................... 243
Transmission fluid level ................ 248
Coolant level ................................ 248
Windshield/rear window
washer system and headlamp
cleaning system ........................... 249
Battery ............................................... 251
Tires and wheels ................................ 252
Important guidelines .................... 252
Tire care and maintenance ........... 253
Direction of rotation ..................... 255
Loading the vehicle ...................... 255
Recommended tire inflation
pressure ....................................... 260
Checking tire inflation pressure ... 261
Tire labeling.................................. 263
Load identification ....................... 267
DOT, Tire Identification Number
(TIN) ............................................. 268
Maximum tire load ....................... 269Maximum tire inflation pressure .. 270
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 271
Tire ply material ........................... 273
Tire and loading terminology ........ 273
Rotating tires ............................... 276
Winter driving .................................... 278
Winter tires .................................. 278
Block heater (Canada only) .......... 279
Snow chains................................. 279
Maintenance...................................... 280
Clearing the maintenance
service indicator .......................... 281
Maintenance service term
exceeded ..................................... 281
Calling up the maintenance
service indicator .......................... 281
Resetting the maintenance
service indicator .......................... 282
Vehicle care....................................... 283
Cleaning and care of the vehicle .. 283

56 Getting started
Driving
The coolant temperature is above
248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.
Stop the vehicle as soon as possible
and turn off the engine. Allow engine
and coolant to cool.
Check the coolant level and add cool-
ant if necessary (
page 248).In case of accident
If the vehicle is leaking gasoline:
Do not start the engine under any
circumstances.
Notify local fire and/or police
authorities.
If the extent of the damage cannot be
determined:
Notify an authorized Mercedes-Benz
Light Truck Center.
If no damage can be determined on the

major assemblies

fuel system

engine mount:
Start the engine in the usual manner.
i
Excessive coolant temperatures trigger
a warning message in the multifunction
display (
page 308).

127 Controls in detail
Control system
Menus, submenus and functions
Menu1Menu2Menu3Menu4Menu5Menu6Menu7
Standard
displayAUDIONAVIVehicle status
message
memorySettingsTrip computerTEL
(page 128)(page 128)(page 130)(page 131)(page 132)(page 145)(page 146)
Commands/submenu
Coolant
temperature
displaySelect radio
stationShow route guid-
ance instruc-
tions, current
direction trav-
eledCall up vehicle
malfunction,
warning and
system status
messages stored
in memoryReset to factory
settingsFuel
consumption
statistics after
startLoad phone book
Digital
speedometerSelect satellite
radio station*
(USA only)Instrument
cluster submenuFuel
consumption
statistics since
the last resetSearch for name
in phone book
Call up mainte-
nance service
indicatorOperate CD
playerLighting
submenuCall up range
Check engine oil
levelVehicle submenu
Convenience
submenu

128 Controls in detail
Control system
Standard display menu
Press buttonk orj to select
the functions in the standard display
menu.
The following functions are available:
Display digital speedometer
Press buttonj twice.
The current vehicle speed is shown in
the multifunction display.
AUDIO menu
The functions in the
AUDIO menu operate
the audio equipment which you currently
have turned on.
If no audio equipment is currently turned
on, the message
AUDIO OFF is shown in the
display.
The following functions are available:
i
The headings used in the menus table
are designed to facilitate navigation
within the system and are not neces-
sarily identical to those shown in the
control system displays.
The first function displayed in each
menu will automatically show you
which part of the system you are in.
FunctionPage
Call up coolant temperature
display120
Call up digital speedometer128
Call up maintenance service
indicator281
Check engine oil level244
FunctionPage
Select radio station129
Select satellite radio station*
(USA only)129
Operate CD player130

241 Operation
At the gas station
G55AMG
1Coolant
2Brake fluidCoolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant level” (
page 248) and see
“Fuels, coolants, lubricants, etc.”
(
page 376).
Brake fluidEngine oil level
For more information on engine oil, see
“Engine oil” (
page 243).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 261).
Vehicle lighting
Check function and cleanliness. For infor-
mation on replacing light bulbs, see “Re-
placing bulbs” (
page 335).
For more information, see “Exterior lamp
switch” (
page 110).
Windshield/rear window washer sys-
tem and headlamp cleaning system
For more information on refilling the reser-
voir, see “Windshield/rear window washer
system and headlamp cleaning system”
(
page 249).
i
Opening the hood, see (page 242).
!
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. Noti-
fy 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 292).

248 Operation
Engine compartment
Screw oil filler cap2 back on filler
neck.
For more information on engine oil, see the
“Technical data” section (
page 376) and
(
page 377).
Transmission fluid level
The transmission fluid level does not need
to be checked. The transmission has a per-
manent supply of automatic transmission
fluid.
If you notice transmission fluid loss or gear
shifting malfunctions, have an authorized
Mercedes-Benz Light Truck Center check
the automatic transmission.
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 engine must be cool. The coolant
level should reach the Cold Level mark
(plastic bridge) in the reservoir.
!
Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.Warning!G
In order to avoid any possibly 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 in-
dicates 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 approx-
imately 1/2turn to relieve excess pres-
sure. If opened immediately, scalding
hot fluid and steam will be blown out un-
der pressure.

Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.


249 Operation
Engine compartment
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1CapUsing a rag, turn the cap slowly approx-
imately one half turn to the left to re-
lease any excess pressure.
Continue turning the cap to the left and
remove it.
Check coolant level.
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 approx. 0.6 in
(1.5 cm) higher
Add coolant as required.
Replace and tighten cap until you hear
it click a few times.
For more information on coolant, see
“Coolants” (
page 380).Windshield/rear window washer sys-
tem and headlamp cleaning system
The windshield washer reservoir is located
in the engine compartment on the passen-
ger side. It holds approximately 5.3 US qt
(5.0 l). The headlamp cleaning system is
also supplied from the windshield washer
reservoir.
1Cap

307 Practical hints
What to do if …
Display symbolDisplay messagePossible causePossible solution
B COOLANT
CHECK LEVEL!The coolant level is too low.Add coolant (page 248).
If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Light
Truck Center.
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
the 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 serious
engine damage.
Observe the coolant temperature dis-
play (
page 120).