heating MERCEDES-BENZ GL320CDI 2007 X164 Owner's Manual

Contents
Safety and Security........................... 73
Occupant safety................................... 74
Air bags .......................................... 76
Occupant Classification System* ... 81
BabySmart
TM air bag deactivation
system (Canada only) ..................... 87
Seat belts ....................................... 88
Active head restraint ...................... 92
Rear head restraints ....................... 93
Children in the vehicle .................... 93
Blocking of rear door
window operation ......................... 100
Panic alarm ........................................ 102
Activating ..................................... 102
Deactivating ................................. 102
Driving safety systems ....................... 103
ABS .............................................. 103
BAS .............................................. 105
ESP
®............................................. 105
EBP............................................... 109
4-ETS ............................................ 109
Anti-theft systems.............................. 111
Immobilizer................................... 111
Anti-theft alarm system ................ 111
Controls in detail............................. 113
Locking and unlocking ....................... 114
SmartKey ..................................... 114
SmartKey with KEYLESS-GO* ...... 117
Checking batteries in the
SmartKey or SmartKey with
KEYLESS-GO* .............................. 122
Loss of the SmartKey or
SmartKey with KEYLESS-GO* ...... 122
Opening the doors
from the inside ............................. 122
Tailgate/Power tailgate*.............. 123
Automatic central locking ............ 130
Locking and unlocking
from the inside ............................. 130
Seats ................................................. 132
Easy-entry/exit feature for
third-row seats ............................. 132
Front seat active head restraints . 135
Rear seats .................................... 135
Lumbar support............................ 139
Multicontour seat* ....................... 140
Seat heating* ............................... 140
Seat ventilation* .......................... 142Memory function* ............................. 143
Storing positions into memory ..... 144
Recalling positions from memory . 144
Lighting ............................................. 145
Exterior lamp switch .................... 145
Combination switch ..................... 149
Corner-illuminating
front fog lamps*........................... 150
Hazard warning flasher ................ 151
Interior lighting ............................ 151
Door entry lamps ......................... 154
Cargo compartment lamp ............ 154
Instrument cluster ............................. 155
Adjusting instrument
cluster illumination ...................... 155
Resetting trip odometer ............... 156
Tachometer .................................. 156
Outside temperature indicator ..... 156

31 At a glance
Center console
Center console
Upper part (Vehicles without enhanced
off-road package*)ItemPage
1COMAND system, see sepa-
rate operating instructions
2Climate control216
3-zone automatic climate
control*230
Rear window defroster215
3Seat heating*,
front passenger side140
4Seat ventilation*,
front passenger side142
5Parktronic system*
deactivation switch293
6Vehicle level control switch283
7Front passenger front air
bag off indicator lamp85,
448,
450
ItemPage
8Storage compartment*318
9Alarm system indicator
lamp112
aElectronic Stability Program
(ESP®) switch
107
bAdaptive damping system
(ADS)* switch (USA only)280
cSeat ventilation*,
driver’s side142
dSeat heating*, driver’s side140
eSwitch for Downhill Speed
Regulation (DSR)276
fHazard warning flasher151
gSwitch for Off-road driving
program280

32 At a glance
Center console
Upper part (Vehicles with enhanced
off-road package*)ItemPage
1COMAND system, see sepa-
rate operating instructions
2Climate control216
3-zone automatic climate
control*230
Rear window defroster215
3Seat heating*,
front passenger side140
4Seat ventilation*,
front passenger side142
5Rotary switch for differential
locks*207
6Switch for LOW RANGE
mode*204
7Switch for Downhill Speed
Regulation (DSR)276
8Rotary switch for vehicle
level control285
ItemPage
9Alarm system indicator
lamp112
aSeat ventilation*,
driver’s side142
bSeat heating*, driver’s side140
cAdaptive damping system
(ADS)* switch280
dElectronic Stability Program
(ESP®) switch
107
eParktronic system*
deactivation switch293
fHazard warning flasher151
gFront passenger front air
bag off indicator lamp85,
448,
450

110 Safety and Security
Driving safety systems
For more information, see the “Practical
hints” section (
page 436) and
(
page 451).
Off-road - 4-ETS
With the off-road driving program switched
on (
page 279), or with the transmission
in LOW RANGE* mode (
page 203), the
4-ETS designed for off-road use is auto-
matically activated.
!Operational or performance test must only
be conducted on a two-axle dynamometer. If
such tests are necessary, contact an authorized
Mercedes-Benz Light Truck Center. You could
otherwise seriously damage the brake system or
the transfer case which is not covered by the
Mercedes-Benz Limited Warranty.
!Because the ESP® operates automatically,
the engine and ignition must be shut off
(SmartKey in starter switch position0 or1 or
KEYLESS-GO* start/stop button in
position0or1) when testing the parking brake
on a brake test dynamometer and such testing
should be no longer than 10 seconds.
Active braking action through the ESP
® may
otherwise seriously damage the brake system
which is not covered by the Mercedes-Benz
Limited Warranty.
iIf the yellow ESP® warning lampv
comes on while driving, the 4-ETS is being
switched off temporarily to prevent overheating
of the drive wheel brakes. In addition, the
message
ESP inoperative See Operator’s
Manual
appears in the multifunction display.

140 Controls in detail
Seats
Multicontour seat*
The multicontour seat has an extendable
seat cushion and inflatable air chambers
built into the backrest to provide additional
lumbar and side support.
The seat cushion depth, seat backrest
cushion-height and curvature can be con-
tinuously varied with switches on the in-
side of each front seat base after the
ignition is switched on (
page 41).
1Seat cushion depth
2Backrest side bolsters
3Backrest center
4Backrest bottom
Switch on the ignition (page 42).
Seat cushion depth
Adjust the seat cushion depth to the
length of your upper leg with
switch1.
Backrest contour
Adjust the contour of the seat backrest
to the desired position with
switchæ orç.
Move the backrest support to the bot-
tom with button4 or to the center
with button3.
Backrest side bolsters
Adjust the side bolsters so that they
provide good lateral support using
switch2.
Seat heating*
The switches for front-seat heating are lo-
cated in the center console.
1Seat heating switch, front seats
2Indicator lamps

141 Controls in detail
Seats
The switches for second-row seat heating*
are located in the rear center console.
1Seat heating switch*, second-row
seats
2Indicator lampsThe red indicator lamps in the switch come
on to show which heating level you have
selected.Switch on the ignition (page 42).
Switching on
Press switch1.
Three red indicator lamps2 in the
switch come on.
Continue pressing switch1 until
desired seat heating level is reached.
Switching off
Press switch1 repeatedly until all
indicator lamps2 go out.
Level
3Three indicator lamps on
(highest level)
The seat heating automatically
switches to level 2 after approx-
imately 5 minutes.
2Two indicator lamps on
The seat heating automatically
switches to level 1 after approx-
imately 10 minutes.
1One indicator lamp on
(lowest level)
The seat heating automatically
switches off after approximately
20 minutes.
offNo indicator lamp on
iIf one or more of the indicator lamps2 on
seat heating switch1 (
page 140) are flash-
ing, there is insufficient voltage available since
too many electrical consumers are switched on.
The seat heating switches off automatically.
The seat heating will switch back on again
automatically as soon as sufficient voltage is
available.

223 Controls in detail
Climate control
Adjusting air distribution
Move air vent slider2 to the left, right,
up, or down to direct the air in the de-
sired direction.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up. You
can also use it to defog the windshield and
door windows.
Activating
Press button0 or, depending on
vehicle production date, button|
(
page 218).
The indicator lamp on the button
comes on.The climate control switches to the follow-
ing functions automatically:

most efficient blower speed and
heating power, depending on outside
temperature

air flows onto the windshield and the
door windows (side air vents must be
open)

the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Adjustments
You can adjust the air volume and the tem-
perature when the front defroster is
switched on. The air flow will remain on the
windshield and door windows.
Press button
to decrease or
buttonQ to increase air volume
(
page 218) to the desired level.The air volume decreases/increases to
the next lower/higher blower speed
and heating switches to the tempera-
ture that was set before the front de-
froster was switched on.
The indicator lamp on button0 or,
depending on vehicle production date,
button| goes out. The indicator
lamp on button9 comes on.
or
Turn temperature control1
and/or7 (
page 218) slightly in any
direction.
Heating switches to the temperature
that was set before the front defroster
was switched on.
The indicator lamp on button0 or,
depending on vehicle production date,
button| goes out. The indicator
lamp on button9 comes on.iKeep this setting selected only until the
windshield or the door windows are clear again.


224 Controls in detail
Climate control
Deactivating
Press button0 or, depending on
vehicle production date, button|
(
page 218) once more.
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are in effect
again. The air conditioning compressor
remains switched on.Windshield fogged on the outside
Switch the windshield wipers on
(
page 64).
Press button0 or, depending on
vehicle production date, button|
(
page 218).
The indicator lamp on the button
comes on.
The climate control switches automatically
to the following functions:

most efficient blower speed and
heating power, depending on outside
temperature

air flows onto the windshield and the
door windows (side air vents must be
open)

the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-dryingIf the automatic air distribution is switched
off:
Press air distribution button9 ora
(
page 218).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
iThe air conditioning compressor remains on
even if the indicator lamp in button0 or, de-
pending on vehicle production date, button|
goes out. This helps to prevent the windshield
from fogging.
iTo switch off, you can also press
button´ orU (
page 218).
iKeep this setting selected only until the
windshield is clear again.
Warning!G
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior win-
dow fogging persists, make sure the air
conditioning (
page 218) is activated, or
press button0 or, depending on vehicle
production date, button|.


227 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 218).
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 218) 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 218).
The indicator lamp on the button
comes on.
Deactivating
Press button9 (page 218).
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

228 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 229).
iThe temperature is adjusted according to
the settings for the front passenger side made
on the front climate control panel (
page 221).
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 229).