2005 MERCEDES-BENZ G55AMG display

238 OperationEngine compartmentHood
Opening
The pull release lever is under the driver’s
side of the instrument panel.
1Release lever

Pull release lever1 upward.
The hood is unlocked.
2Safety hook

Lift hood up slightly.

Pull safety hook2 in direction of ar-
row and open hood.
Warning!
G
Do not pull the release lever while the vehi-
cle is in motion. Otherwise the hood could
be forced open by passing air flow.
!To avoid damage to the windshield wip-
ers or hood, open the hood only with
wipers in parked position.
Warning!
G
To help prevent personal injury, stay clear of
moving parts when the hood is open and the
engine is running. Make sure the hood is
properly closed before driving. When closing
the hood, use extreme caution not to catch
hands or fingers.
The radiator fan may continue to run for ap-
proximately 30 seconds or even restart af-
ter the engine has been turned off. Stay
clear of fan blades.Warning!
G
If you see flames or smoke coming from the
engine compartment, or if the coolant tem-
perature display indicates that the engine is
overheated, do not open the hood. Move
away from vehicle and do not open the hood
until the engine has cooled down. If neces-
sary, call the fire department.

240 OperationEngine compartmentChecking engine oil level with the
control system
When checking the oil level

the vehicle must be parked on level
ground


with the engine at operating tempera-
ture, the vehicle must have been sta-
tionary for at least five minutes with the
engine turned off


with the engine not at operating tem-
perature yet, the vehicle must have
been stationary for at least 30 minutes
with the engine turned off
To check the engine oil level via the
multifunction display, do the following:

Switch on the ignition (
page 35).
The standard display (
page 123) should
appear in the multifunction display.

Press buttonk orj on the
steering wheel until the following
message is seen in the multifunction
display:ENGINE OIL LEVEL
MEASURING NOW
MEASURE. CORRECT
ONLY IF VEH. LEVELOne of the following messages will
subsequently appear in the indicator:

ENGINE OIL LEVEL
OK


ADD 1.0 Qt. TO
REACH MAX. OIL LEVEL!(Canada:
1.0 LITER
)


ADD 1.5 Qts. TO
REACH MAX. OIL LEVEL!(Canada:
1.5 LITERS
)


ADD 2.0 Qts. TO
REACH MAX. OIL LEVEL!(Canada:
2.0 LITERS
)

If necessary, add engine oil.
For adding engine oil see (
page 243).
For more information on engine oil, see the
“Technical data” section (
page 374) and
(
page 375).iIf you want to interrupt the checking
procedure, press thek orj
button on the multifunction steering
wheel.

241 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 296). !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.iPerform the engine oil level check with
the dipstick if it cannot be completed
with the control system (
page 242).
In this case we recommend that you
have the system checked at a
Mercedes-Benz Light Truck Center.

242 OperationEngine compartmentChecking engine oil level with the oil
dipstick
When checking the oil level the vehicle
must

be parked on level ground


be at normal operating temperature


have been stationary for at least five
minutes with the engine turned offTo check the engine oil level with the oil
dipstick, do the following:

Open the hood (
page 238).

Pull out oil dipstick1 (
page 243).

Wipe oil dipstick1 clean.

Fully insert oil dipstick1 into the
dipstick guide tube.

Pull out oil dipstick1 again after
approximately three seconds to obtain
accurate reading.
Oil dipstickThe oil level is correct when it is between
the lower (min) and upper (max) mark of
the oil dipstick.

If necessary, add engine oil.
For adding engine oil see (
page 243).
For more information on engine oil, see the
“Technical data” section (
page 374) and
(
page 375).
For more information on messages in the
multifunction display concerning engine
oil, see the “Practical hints” section
(page 309).
iThe engine oil level can be checked by
either the oil dipstick or via the multi-
function display in the instrument
cluster (
page 240). The amount of
engine oil needed is shown more
precisely in the multifunction display.
iThe filling quantity between the upper
and lower marks on the oil dipstick is
approximately 2.1 US qt. (2.0 l).

244 OperationEngine compartment
Screw oil filler cap2 back on filler
neck.
For more information on engine oil, see the
“Technical data” section (
page 374) and
(
page 375).
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 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.


277 Operation
Maintenance
Maintenance
In the “Operation” section you will find de-
tailed information on operating, maintain-
ing, and caring for your vehicle.
We strongly recommend that you have
your vehicle serviced by an authorized
Mercedes-Benz Light Truck Center, in ac-
cordance with the Maintenance Booklet at
the times called for by the maintenance
service indicator display.
Failure to have the vehicle maintained in
accordance with the Maintenance Booklet
and maintenance service indicator at the
designated times/mileage will result in ve-
hicle damage not covered by the
Mercedes-Benz Limited Warranty.
The maintenance service indicator will
notify you when your next maintenance
service is due.Starting approximately one month before
maintenance service is due, one of the fol-
lowing messages will appear in the multi-
function display while you are driving or
when you switch on the ignition (example
service A):
SERVICE A IN XX DAYS
SERVICE A IN XX MILES (KM)
SERVICE A DUE NOW!The type of maintenance service due is in-
dicated in the speedometer display field:
9Basic service (A)
½Extended service (B)
iVehicles equipped with FSS (F
lexible
S
ervice S
ystem) only (Canada
vehicles): The interval between mainte-
nance services depends on your driving
habits. A gentle driving style, moderate
engine speeds and the avoidance of
short-distance trips will lengthen the
interval between maintenance
services.

278 OperationMaintenanceClearing the maintenance service indicator
The maintenance service indicator is auto-
matically cleared

after ten seconds when you switch on
the ignition or when reaching the main-
tenance service threshold while driving


after 30 seconds, once the suggested
maintenance service term has passed
You can also clear it yourself.

Press the reset button on the instru-
ment cluster (
page 25).
Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the multifunction
display:SERVICE A EXCEEDED BY XX DAYS
SERVICE A EXCEEDED BY XX MILES (KM)In addition, a signal sounds when the mes-
sage appears.
Any authorized Mercedes-Benz Light Truck
Center will reset the maintenance service
indicator following a completed mainte-
nance service.Calling up the maintenance service
indicator
Switch on the ignition (
page 35).
The standard display of the control sys-
tem appears (
page 123).

Press buttonk orj on the mul-
tifunction steering wheel until the
maintenance service indicator with the
service symbol9 or´ and the
service deadline appears in the multi-
function display.

289 Practical hints
What to do if …
Problem
Possible cause
Suggested solution
-
The yellow ABS indicator lamp
comes on while driving.
The ABS has switched off because charging
voltage has fallen below 10 volts. The battery
may not be charged.

Turn off unnecessary electric con-
sumers.
When the battery voltage is above this
value again, the ABS is operational
again.

Note the messages in the multifunc-
tion display (
page 296).