2002 MERCEDES-BENZ G500 engine

123 Coolant temperature gauge
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Coolant temperature gauge
Turn the electronic key in starter switch to position 1
or 2.
Call up the trip odometer and main odometer by
pressing button è or ÿ on the multifunction
steering wheel. See page 94.
Press button j or k until the coolant
temperature gauge appears.During severe operating conditions and stop-and-go city
traffic or uphill driving, the coolant temperature may
rise close to 120
°C.
The engine should not be operated with the coolant
temperature above 120
°C. Doing so may cause serious
engine damage which is not covered by the
Mercedes-Benz Limited Warranty.
Note:
Excessive coolant temperatures trigger a warning
message in the multifunction display. See page 281.
0
60
40100
120
140
mph
2080
P54.30-5171-26
Wa r n i n g !
• Driving when your engine is badly overheated
can cause some fluids which may have leaked
into the engine compartment to catch fire. You
could be seriously burned.• Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine if
you see or hear steam coming from it.Turn off the engine, get out of the vehicle and do
not stand near the vehicle until it cools down.
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125 Flexible service system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index The next service due date is displayed either in days or
in miles, depending on your driving style.
Once the suggested service term has passed, the symbol
and message appear for approximately 30 seconds and
a signal sounds every time when turning the electronic
key in starter switch to position 2.
The service indicator disappears automatically after
30 seconds or if the knob for instrument cluster
illumination, see page 84, in the instrument cluster is
pressed.
Calling up service indicator manually:
Turn the electronic key in starter switch to position 1
or 2.
Call up the trip odometer and main odometer by
pressing button è or ÿ on the multifunction
steering wheel until the display appears. See page 94.
Press button j or k until the FSS indicator
appears.
The next or previous system is displayed by pressing
button è or ÿ.Important!
The FSS indicator is not an engine oil level indicator.
See page 127 for engine oil level indicator.
Note:
When disconnecting vehicle battery for one or more
days at a time, such days will not be counted. Any such
days not counted by the FSS can be added by your
Mercedes-Benz Light Truck Center.
The interval between services is determined by the type
of driving for which the vehicle is used. For example,
driving at extreme speeds, and cold starts combined
wit h short distan ce d r iving in which the e ngin e d oes not
reach operating normal temperature, reduce the interval
between services.
J_G463.book Seite 125 Mittwoch, 19. September 2001 8:06 08

127 Engine oil level indicator
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Engine oil level indicator
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after turning
off the engine, allowing for the oil to return to the oil
pan.
The message “PERF. SERV. ON TIME” (perform service
[engine oil level check] on time) will be displayed if the
required waiting period has not been observed after
turning off the engine:•with engine at operational temperature
approximately 5 minutes.
•with engine not at operational temperature up to
approximately 30 minutes.
The engine oil level check can be repeated after a short
time.
Turn the electronic key in starter switch to position 2.
To call up the trip odometer and main odometer, press
button è or ÿ on the multifunction steering
wheel until the display appears. See page 94.
With the multifunction display showing the trip
odometer and main odometer, press button j or
k on the multifunction steering wheel repeatedly
until the “CORRECT MEASUREMENT – ONLY IF VEH.
LEVEL” engine oil level indicator appears. This indicator
is only a reminder. Measurement can be cancelled by
pressing button j or k if the vehicle is not
parked on level ground. An incorrect reading will be
recorded if you do not cancel the measurement. Move
the vehicle to level ground and measure again.
The electronic key in starter switch is not in position 2 if
the “ENGINE OIL LEVEL – IGNITION ON PLEASE!”
message appears.
0
60
40100
120
140
mph
2080
P54.30-5173-26
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128 Engine oil level indicator
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
The “ENGINE OIL LEVEL – MEASUREMENT IN
PROCESS” message is displayed after approximately
3seconds.
One of the following messages will subseq uently appear
on the indicator:
“ENGINE OIL LEVEL – O.K.”
No oil needs to be added.
“ENGINE OIL LEVEL – ADD 1.0 QUART”
(Canada: 1.0 L)
“ENGINE OIL LEVEL – ADD 1.5 QUART”
(Canada: 1.5 L)
“ENGINE OIL LEVEL – ADD 2.0 QUART”
(Canada: 2.0 L)
See “Checking engine oil level”, on page 304 for
instructions on adding engine oil.
“ENGINE OIL LEVEL – REDUCE OIL LEVEL”
This message will only be displayed if the engine is at
operational temperature.
Do not overfill the engine.
Excessive 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.The “PERF. SERV. ON TIME” message will be displayed
if a proper oil level check cannot be performed. The
engine oil level check can be repeated after a short
while.
Perform the engine oil level check with the dipstick, if it
cannot completed via the multifunction display.
See “Checking engine oil level”, on page 304.
In this case we recommend that you have the system
checked at a Mercedes-Benz Light Truck Center.
Notes:
See malfunction and warning messages on page 272
and page 282 if an engine oil level indicator appears on
the multifunction display when the engine is running.
The engine oil level cannot be checked while the engine
is running. The “ENGINE OIL LEVEL – NOT WHEN
ENGINE ON” message will appear.
J_G463.book Seite 128 Mittwoch, 19. September 2001 8:06 08

129 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Exterior lamp switch
MOff
UAutomatic headlamp mode, see below.
CPar k ing lamps (als o s id e m ar ker lamps , taillamps ,
licence plate lamps, instrument panel lamps)
Canada only: When the engine is running, the low
beam is additionally switched on.BParking lamps plus low beam or high beam
headlamps (combination switch pushed forward).
ˆStanding lamps, right (turn left one stop)
‚Standing lamps, left (turn left two stops)
‡Front fog lamps (pull out one stop) with parking
lamps and/or low beam headlamps on. Green
indicator in lamp switch comes on.
†Rear fog lamp (pull out to second detent) in
addition to the front fog lamps. Yellow indicator in
lamp switch comes on.
Note:
With the electronic key removed and the driver’s door
open, a warning sounds if the vehicle’s exterior lamps
(except standing lamps) are not switched off.
Fog lamps will operate with the parking lamps and / or
the low beam headlamps on. Fog lamps should only be
used in conjunction with low beam headlamps. Consult
your State or Province Motor Vehicle Regulations
regarding allowable lamp operation.
Fog lamps are automatically switched off when the
exterior lamp switch is turned to position M or U.
2563
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130 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Headlamp mode
Manual headlamp mode
The low beam headlamps and parking lamps can be
switched on and off with the exterior lamp switch. For
exterior lamp switch, see above.
Note:
With the daytime running lamp mode activated and the
engine running, the low beam headlamps cannot be
switched off manually.Automat ic headlamp mode
Turn exterior lamp switch to positionU.
•Electronic key in starter switch position 1:
The parking lamps switch on and off automatically
depending on the brightness of the ambient light.
•Electronic key in starter switch position 2 and the
engine running:
The low beam headlamps and parking lamps are
switched on and off automatically depending on the
brightness of the ambient light.
The low beam headlamps and parking lamps can
still be switched on and off manually using the
exterior lamp switch.
Note:
With the daytime running lamp mode activated, the low
beam headlamps cannot be switched off manually.
The headlamps will not be automatically switched on
under foggy conditions.
Front fog lamps and rear fog lamp cannot be switched
on manually with exterior lamp switch in positionU.
To activate the fog lamps turn exterior switch to
positionB.
Wa r n i n g !
The driver is responsible for the operation of the
vehicle’s lights at all times. The automatic
headlamp feature is only an aid to the driver.
Switch on the vehicle lights by hand when driving
or traffic conditions require you to do so.
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131 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Daytime running lamp mode
Turn exterior lamp switch to positionM orU.
When the engine is running, the low beam headlamps
are automatically switched on. In low ambient light
conditions the parking lamps will also switch on.
•Canada only:
When shifting from a driving position to
position “N” or “P”, the low beam switches off
(3 minutes delay).
For nighttime driving the exterior lamp switch
should be turned to position B to permit
activation of the high beam headlamps.•USA only:
The high beam headlamps can also be activated
when driving with the daytime running lamp mode
activated and exterior lamp switch in positionM.
To activate the daytime running lamp mode, see the
individual setting menu “LIGHTING” – “LIGHT
CIRCUIT HEADLAMP MODE” on page 114.
Note:
See page 129 for notes on the exterior lamp switch.
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132 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Night security illumination
Turn exterior lamp switch to positionU.
At low ambient light conditions and with the engine
having been switched off, the exterior lamps (fog lamps
and parking lamps) switch on for added illumination,
(except in daytime running mode). After the last door
has been closed the lamp-on time period commences.
See the individual setting menu “LIGHTING” –
“HEADLAMPS DELAYED SWITCH–OFF” on page 114,
for instructions on how to activate the function.
The lamp-on time period for night security illumination
can be set at several different timed levels from 0 (off) to
60 seconds, see the individual setting menu
“LIGHTING” – “HEADLAMPS DELAYED SWITCH–OFF”
on page 114.Notes:
Within 10 minutes after closing the last door the night
security illumination can be reactivated by opening a
door.
If after switching the engine off, no doors are opened or
if after opening the doors or tailgate they are not closed,
the night security illumination will switch off
automatically after 60 seconds.
Deactivating night security illumination temporarily:
Turn the electronic key in starter switch to position 0
then to position 2 and back to position 0 again before
getting out of the vehicle. The night security
illumination will not be activated when the door is
opened.
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