2006 MERCEDES-BENZ G500 phone

235 Operation
Driving instructions

Clean all exterior lamps and check
them for possible damage.

Check for brush or branches caught in
the underbody.
They could increase the possibility of a
fire, as well as cut fuel and/or brake
lines, puncture rubber bellows of the
axles or drive shafts.

After continued operation in mud,
sand, water or other dirty conditions,
clean the brake discs, wheels, brake
pads, and check and clean axle joints.

Conduct a brake test.Control and operation of radio trans-
mitters
COMAND, radio and telephone*Telephones and two-way radios
Radio transmitters, such as a portable tele-
phone or citizens band unit should only be
used inside the vehicle if they are connect-
ed to an antenna that is installed on the
outside of the vehicle.
Refer to the radio transmitter operation in-
structions regarding use of an external an-
tenna.
Warning!G
Do not forget that your primary responsibili-
ty is to drive the vehicle safely. Only operate
the COMAND, radio or telephone
1 if road,
traffic and weather conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
1Observe all legal requirements.
Warning!G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or
personal injury.

245 Operation
Engine compartment
Other display messages
If the SmartKey is not turned to position2
in the starter switch, the following
message will appear:
FOR ENGINE OIL LEVEL
SWITCH ON IGNITION!
Switch on the ignition (page 35).
If you see the message:
OBSERVE WAITING PERIOD
If engine is at operating temperature,
wait five minutes before repeating
check procedure.
If engine is not at operating tempera-
ture yet, wait 30 minutes before re-
peating check procedure.If you see the message:
ENGINE OIL LEVEL
NOT WHEN ENGINE ON!
Turn off the engine.
If the engine is at operating tempera-
ture, wait five minutes before checking
oil.
If the engine is not at operating temper-
ature yet, you must wait 30 minutes
before checking oil.
If there is excess engine oil with the engine
at normal operating temperature, the
following message will appear:
ENGINE OIL LEVEL
REDUCE OIL LEVEL
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Light Truck Center.For more information on messages in the
multifunction display concerning engine
oil, see the “Practical hints” section
(
page 311).
!
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.
i
Perform the engine oil level check with
the dipstick if it cannot be completed
with the control system (
page 246).
In this case we recommend that you
have the system checked at a
Mercedes-Benz Light Truck Center.

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.


312 Practical hints
What to do if …
Display symbolDisplay messagePossible causePossible solution
: ENGINE OIL LEVEL
REDUCE OIL LEVEL!You have added too much engine oil.
There is a risk of damaging the engine or
the catalytic converter.Have oil siphoned or drained off. Ob-
serve all legal requirements with re-
spect to its disposal.
ENGINE OIL LEVEL
STOP, ENGINE OFF!There is no oil in the engine. There is a
danger of engine damage.Carefully bring the vehicle to a halt as
soon as possible.
Turn off the engine.
Add engine oil (page 247) and check
the engine oil level (
page 244).
ENGINE OIL
VISIT WORKSHOP!It may be that there is water in the engine
oil.Have the oil checked.
ENGINE OIL LEVEL
VISIT WORKSHOP!The engine oil has dropped to a critical
level.Check the engine oil level
(
page 244) and add oil as required
(
page 247).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
The measuring system is malfunctioning.Have the measuring system checked
by an authorized Mercedes-Benz Light
Truck Center.

322 Practical hints
What to do if …
DisplayPossible causePossible solution
ì FUNCTION
NOT AVAILABLE!This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Ê TRUNK OPEN!This message will appear whenever the
tailgate is open.Close the tailgate.
G VISIT WORKSHOP!
DISPLAY MALFUNCTION:The instrument cluster display is malfunc-
tioning.
Some systems themselves may also have
failed.Continue driving with added caution.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
± VISIT WORKSHOP!
DISPLAY MALFUNCTION: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
by an authorized Mercedes-Benz Light
Truck Center.
W WASHER FLUID
CHECK LEVEL!The fluid level has dropped to about 1/3
of total reservoir capacity.Add washer fluid (page 382).

384 Technical terms
COMAND
(C
ockpit Management and Data
System)
Information and operating center for
vehicle sound and communications
systems, including the radio and the
navigation system, as well as other op-
tional equipment (CD changer, tele-
phone, etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.
Differential locks
On slippery surfaces, differential locks
prevent one wheel of an axle from spin-
ning while the other wheel stands still,
resulting in driving force no longer be-
ing transferred.Cruise control
Driving convenience system that auto-
matically maintains the vehicle speed
set by the driver.
Curb weight
(
page 273)
DOT
(D
epartment of Transportation)
(
page 274)
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.ESP
(E
lectronic Stability Program)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency Tensioning Device)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem’s threshold to tighten the seat
belts.
->SRS
FSS (Canada vehicles)
(F
lexible Service System)
Maintenance service indicator in the
speedometer display that informs the
driver when the next vehicle mainte-
nance service is due. FSS evaluates en-
gine temperature, oil level, vehicle
speed, engine speed, distance driven
and the time elapsed since your last
service, and calls for the next mainte-
nance service accordingly.

388 Technical terms
Transfer case
Speed of rotation/torque converter
that works together with the ->auto-
matic transmission. In the LOW mode
off-road position, the transfer case de-
creases the output rotational speed of
the ->automatic transmission by ap-
proximately half. This results in a corre-
sponding increase of torque on the
drive axles.
The vehicle then has nearly double the
driving force but drives only approxi-
mately half as fast.
Tread
(
page 275)
Treadwear indicators
(
page 276)TWR
(T
ongue Weight Rating)
(
page 276)
Uniform Tire Quality Grading Standards
(
page 276)
Vehicle capacity weight
(
page 276)
Vehicle maximum load on the tire
(
page 276)
VIN
(V
ehicle Identification Number)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).

394 Index
D
Data recording (vehicle) 20
Daytime running lamp mode 112
Setting 138, 139
Deactivating
Air conditioning (cooling) 174
Air recirculation mode 172
Alarm 89
Anti-theft alarm system 89
Central locking (control system) 142
Cruise control 182
Defrost 172
ESP 86
Exterior lamps 111
Exterior lamps delayed shut-off 140
Headlamps 58
Immobilizer 88
Interior lighting delayed shut-off 141
Rear window defroster 167
Tow-away alarm 90
Deep water see Standing water
Defogging
Windshield 171
Defrosting 172Delayed shut-off
Exterior lamps 140
Interior lighting 141
Department of Transportation see DOT
Dialing
A number (telephone) 148
Differential locks 159, 384
Switching off 162
Switching on 161
Difficulties
While driving see Problems while driv-
ing
With starting 49
Digital speedometer 128
Direction of rotation (tires) 255
Discharged battery
Jump starting 356
Disconnecting
Vehicle battery 354
Display
Selecting 138Displays
Digital speedometer 128
Maintenance service indicator 280
Messages 245, 298
Selecting 138
Showing vehicle status
messages 131
Distance to empty (range)
Calling up 145
Door control panel 31
Door handle 31
Door sill panels
Cleaning 288
Door unlock
With Tele Aid 209
Doors
Messages in display 310
Opening from the inside 96
Opening from the outside 94
DOT 274
Downhill driving
Cruise control 182
Downshifting 155
Drink holders see Cup holders
Drinking and driving 220