cooling system MERCEDES-BENZ GL320 2008 X164 Owner's Manual
[x] Cancel search | Manufacturer: MERCEDES-BENZ, Model Year: 2008, Model line: GL320, Model: MERCEDES-BENZ GL320 2008 X164Pages: 601
Page 6 of 601
Contents
Control system .................................. 155
Multifunction display .................... 155
Multifunction steering wheel ........ 156
Menus .......................................... 158
Standard display menu ................ 162
AUDIO menu ................................ 164
NAV* menu .................................. 166
Off-road menu .............................. 166
DISTRONIC* menu
(Canada only) ............................... 167
Vehicle status message
memory menu .............................. 167
Settings menu .............................. 168
Vehicle configuration ................... 182
Trip computer menu..................... 184
TEL* menu ................................... 186
Automatic transmission ..................... 189
Gear selector lever ....................... 189
Shifting procedure ....................... 192
Transmission positions................. 192
Driving tips ................................... 195
Gear ranges ................................. 197
Steering wheel gearshift control .. 198
Emergency operation
(Limp-Home Mode) ...................... 200Transfer case ...................................... 201
LOW RANGE mode* ...................... 201
Differential locks* .............................. 204
A few words about differentials
and differential locks* .................. 204
Switching differential locks* ......... 205
Good visibility ..................................... 208
Headlamp cleaning system* ......... 208
Rear view mirrors .......................... 208
Power folding exterior
rear view mirrors* ......................... 209
Sun visors ..................................... 210
Rear panorama roof sunshade ...... 212
Rear window defroster .................. 212
Climate control ................................... 214
Deactivating the
climate control system ................. 218
Operating the climate control
system in automatic mode............ 218
Setting the temperature................ 219
Adjusting air distribution............... 219
Adjusting air volume ..................... 220
Air vents in the roof liner
over the second-row seats* .......... 220
Front defroster.............................. 221
Air recirculation mode .................. 222Air conditioning ............................ 224
Residual heat and ventilation........ 225
Rear climate control* ................... 226
3-zone automatic climate control* ..... 228
Deactivating the automatic
climate control system ................. 232
Operating the automatic
climate control system
in automatic mode ........................ 233
Setting the temperature ............... 234
Adjusting air distribution .............. 234
Adjusting air volume ..................... 235
Front defroster ............................. 235
Maximum cooling MAXCOOL ........ 237
Air recirculation mode .................. 237
Air conditioning ............................ 239
Using driver-side settings
for all temperature zones.............. 240
Residual heat and ventilation........ 241
Rear automatic climate control..... 241
Power windows .................................. 246
Door windows ............................... 247
Hinged quarter windows* ............. 248
Synchronizing the door windows .. 249
Summer opening feature .............. 249
Convenience closing feature......... 250
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Page 66 of 601
65 Getting started
Driving
Deactivating intermittent wipe
Turn rear window wiper switch1 to
position4 (
page 64).
Indicator6 (
page 64) for the rear
window wiper is cleared from the lower
multifunction display, indicating that
the rear window wiper is deactivated.
Wiping with windshield washer fluid
Turn and hold rear window wiper
switch1 in position2 or5
(
page 64) until the rear window is
clean.
The rear window wiper operates with
washer fluid.
For information on filling up the washer
reservoir, see “Windshield/rear window
washer system and headlamp cleaning
system*” (
page 383).
Problems while driving
The engine runs erratically and misfires
An ignition cable may be damaged
(gasoline engine only).
The engine electronics may not be
operating properly.
Unburned gasoline may have entered
the catalytic converter and damaged it
(gasoline engine only).
Give very little gas.
Have the problem repaired by 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 en-
gine. Allow engine and coolant to cool
off.
Check the coolant level and add cool-
ant if necessary (
page 381).
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Page 218 of 601
217 Controls in detail
Climate control
The climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
(
page 224).
Warning!G
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite to unpro-
tected skin in the immediate area of the air
vents.
Always keep sufficient distance between un-
protected parts of the body and the air
vents. If necessary, use the air distribution
controls (
page 216) to direct the air to air
vents in the vehicle interior that are not in
the immediate area of unprotected skin.
Warning!G
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled interval. A clogged filter will
reduce the air volume to the interior and the
windows could fog up, impairing visibility
and endangering you and others. Have a
clogged filter replaced as soon as possible
at an authorized Mercedes-Benz Light Truck
Center.
Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iIf the vehicle interior is hot, ventilate the in-
terior before driving off, see “Summer opening
feature” (
page 249). The climate control will
then adjust the interior temperature to the set
value much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
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Page 219 of 601
218 Controls in detail
Climate control
Deactivating the climate control
system
Deactivating
Press button´ (page 216).
The indicator lamp on the button
comes on.Reactivating
Press buttonU (page 216).
Operating the climate control system
in automatic modeActivating
Press buttonU (page 216) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.
Use temperature controls1 and7
(
page 216) to separately adjust the
air temperature on each side of the
passenger compartment.
The interior air temperature is adjusted
automatically.
Deactivating
Press button orQ
(
page 216).
The indicator lamp on buttonU
goes out. The automatic operation of
air volume switches off. The selected
blower speed is shown in the air
volume displayb (
page 216).
Warning!G
When the climate control system is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this settings for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
iYou can also press button´
(
page 216) on the climate control panel.
If you press button| (
page 216) to
reactivate the climate control system, the
defrosting mode is activated.
iWhen operating the climate control system
in automatic mode, you will only rarely need to
adjust the temperature, air volume and air distri-
bution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary (
page 225).
iThe settings for the passenger side are also
used for the rear passenger compartment.
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Page 226 of 601
225 Controls in detail
Climate control
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press button9 (page 216).
The indicator lamp on the button goes
out.
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button9 (page 216) again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Residual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.Activating
Switch off the ignition (page 42).
Press button9 (page 216).
The indicator lamp on the button
comes on.
Deactivating
Press button9 (page 216).
The indicator lamp on the button goes
out.
!If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned
off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Light Truck Center.
iHow long the system will provide heating
depends on
the coolant temperature
the battery voltage
Regardless of the temperature and air volume
set on the climate control panel, the interior tem-
perature is set to 72°F (22°C) and the blower
runs on low speed to protect the vehicle battery.
iThe residual heat is automatically turned off:
when the ignition is switched on
after about 30 minutes
if the coolant temperature is too low
if the battery voltage drops
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Page 227 of 601
226 Controls in detail
Climate control
Rear climate control*
The control panel is located on the rear of
the front center console.
Activating rear climate control
Press buttonU.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.Deactivating rear climate control
Press button´.
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.iThe rear climate control panel is only
available if your vehicle is equipped with seat
heating* for the rear seats or Rear Audio fea-
ture* (see separate COMAND System operating
instructions).
1Left rear center air vent, adjustable
2Right rear center air vent, adjustable
3Rear climate control on
(automatic mode)
4Air distribution (directs air through
the center air vents)
5Air distribution (directs air through
the footwells and side air vents)
6Rear air conditioning off
iThe climate control must be switched on
(
page 227).
iThe temperature is adjusted according to
the settings for the front passenger side made
on the front climate control panel (
page 219).
iSwitch off the rear climate control for im-
proved cooling or heating output in the front pas-
senger compartment.
You can also switch off the rear climate control
from the front passenger compartment
(
page 227).
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Page 233 of 601
232 Controls in detail
3-zone automatic climate control*
Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
(
page 230).Deactivating the automatic climate
control system
Deactivating
Press button´ (page 230) until
the displaye (
page 230) is cleared.
The indicator lamp on the button
comes on.
Warning!G
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled interval. A clogged filter will
reduce the air volume to the interior and the
windows could fog up, impairing visibility
and endangering you and others. Have a
clogged filter replaced as soon as possible
at an authorized Mercedes-Benz Light Truck
Center.
Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iIf the vehicle interior is hot, ventilate the in-
terior before driving off, see “Summer opening
feature” (
page 249). The automatic climate
control will then adjust the interior temperature
to the set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
Warning!G
When the automatic climate control system
is switched off, the outside air supply and
circulation are also switched off. Only
choose this settings for a short time. Other-
wise the windows could fog up, impairing
visibility and endangering you and others.
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Page 234 of 601
233 Controls in detail
3-zone automatic climate control*
Reactivating
Press buttonU (page 230).Operating the automatic climate control system in automatic mode
You can switch the automatic climate con-
trol system on and off separately for each
zone as needed.
Activating
Press buttonU (page 230) while
the engine is running.
The indicator lamp on the button
comes on. Air volume and air distribu-
tion are controlled separately for each
zone.
Use temperature controls1 and9
(
page 230) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the interior is ad-
justed automatically.
Deactivating
Press one button of the air distribution
(
page 230) or press button
orQ (
page 230).
The indicator lamp on buttonU
goes out.
Depending on which button you press –
the air distribution button or the air vol-
ume button orQ – automatic
control of either the air distribution or
air volume is switched off.
iYou can also press button´
(
page 230) on the automatic climate control
panel.
If you press button| (
page 230) to
reactivate the automatic climate control system,
the defrosting mode is activated.iWhen operating the automatic climate
control system in automatic mode, you will only
rarely need to adjust the temperature, air volume
and air distribution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary.
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Page 241 of 601
240 Controls in detail
3-zone automatic climate control*
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press button9 (page 230).
The indicator lamp on the button goes
out. The cooling function switches off
after a short delay.
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button9 again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R-134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.Using driver-side settings for all tem-
perature zones
You can use the settings of the driver’s
side, such as temperature, air volume and
air distribution, for all temperature zones.
These settings only need to be made once
and the automatic climate control system
will automatically regulate the settings for
all temperature zones quickly and comfort-
ably.Activating
Adjust the temperature, air volume and
air distribution (
page 230).
Press button; (page 230).
The indicator lamp on the button
comes on.
The driver-side settings are used for all
temperature zones.
Deactivating
Press button; (page 230) again.
The indicator lamp on the button goes
out.
!If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned
off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Light Truck Center.
iIf you manually set the temperature, air vol-
ume or air distribution for the passenger side or
the rear passenger compartment when the
MONO setting is active, the MONO setting will
be switched off.
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Page 383 of 601
382 Operation
Engine compartment
The coolant expansion tank is located on
the driver’s side of the engine compart-
ment.
1Cap
2Coolant expansion tank
3Indicator wall
4Coolant levelUsing a rag, turn cap1 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
Continue turning cap1 counterclock-
wise and remove it.
Coolant level4 is correct if the level:
for cold coolant: reaches the top of
indicator wall3 visible through the
filling opening
for warm coolant: is approximately
0.6 in (1.5 cm) higher
Add coolant as required.
Replace and tighten cap1.
For more information on coolant, see
“Coolants” (
page 567).
Warning!G
In order to avoid 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 approx-
imately 1/2 turn to relieve excess pres-
sure. If opened immediately, scalding
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.
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