2009 MERCEDES-BENZ GL SUV air condition

An acoustic warning will also sound. The
gear change process has not been comple-
ted. LOW RANGE is in the neutral position.
There is no connection between the engine
and the drive wheels.
! Do not drive any further, otherwise you
could damage the vehicle's drive train.
XStop the vehicle. Take into account the
road and traffic conditions when doing
this.
X Depress the parking brake.
X Carry out the gear change process
again.
If the gear change process has been
carried out, the Stop vehicle. Apply
parking brake message disappears. Differential locks
Differential locks improve the vehicle’s trac-
tion.
Your vehicle is equipped with the following:
R A differential lock for the transfer box: this
controls the balance between the front and
rear axles.
R A differential lock for the rear axle: this
controls the balance between the wheels
and the rear axle.
4ETS (Y page 53) controls the compensation
between the wheels and the front axle.
Engaging the differential locks Automatic mode
Use automatic mode
;for all driving situa-
tions, including driving off-road or when ford-
ing.
In automatic mode, the differential locks are
engaged and disengaged according to driving
requirements. This guarantees sufficient trac-
tion for most driving situations with unrestric-
ted vehicle steerability.
X Start the engine.
The differential locks are in automatic
mode. The indicator lamp in selector
wheel :lights up above symbol for auto-
matic mode ;.
Engaging manually G
Risk of accident
When driving on a firm road surface, only drive
in automatic mode, never with manually
engaged differential locks. If differential locks
have been engaged manually, the vehicle's
steerability is greatly impaired and the risk of
an accident thereby increased.
Do not manually engage or disengage the dif-
ferential locks while cornering. The vehicle
motion could otherwise be jerky. You could
lose control of the vehicle as a result and
cause an accident.
Only engage the differential locks manually if
traction in automatic mode is insufficient.
At speeds of up to 30 km/h, you can engage
the differential locks by hand.
X Start the engine.
X Turn selector wheel :to desired position
= or?.
The indicator lamp in selector wheel :
lights up at the corresponding symbol. 116
Off-road drivingControls
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laden or towing a trailer, you must select shift
range 1,2or 3in good time. By doing so, you
will make use of the braking effect of the
engine, which relieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly. G
Risk of accident
The brake pedal is retracted when Distronic
brakes. Do not restrict the movement of the
pedal in any way.
R Do not put any objects in the footwell.
R Ensure that floor mats and carpets are fixed
securely.
R Do not place your foot under the brake
pedal as it could become trapped.
You could otherwise cause an accident and
injure yourself and others. G
Risk of accident
Do not change down for additional engine
braking on a slippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid. G
Risk of accident
Distronic is only an aid designed to assist
driving. The driver is fully responsible for the
vehicle's distance from other vehicles, the
vehicle's speed and for braking in good time.
Distronic does not react to:
R pedestrians
R stationary obstacles on the road, e.g. sta-
tionary or parked vehicles
R oncoming and crossing traffic
Distronic may not detect narrow vehicles driv-
ing in front, e.g. motorcycles, or vehicles driv-
ing on a different line. Therefore, always pay
attention to traffic conditions even when Dis-
tronic is activated. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yourself and others.
If a slower-moving vehicle is detected in front,
Distronic causes your vehicle to brake and maintain the preset distance to the vehicle in
front that you have set. G
Risk of accident
Distronic cannot take account of road and
traffic conditions. Deactivate, or do not acti-
vate, Distronic if it does not detect the vehicle
in front, or if it no longer detects it. This is
especially the case:
R before corners
R in filter lanes
R when changing to a lane with faster moving
traffic
R in complex driving situations or where the
lanes are diverted, e.g. at motorway/road-
way construction sites
Otherwise, Distronic maintains the current
speed or accelerates to the set speed.
Distronic cannot take account of weather
conditions. Deactivate, or do not activate,
Distronic:
R if the roads are slippery, snow-covered or
icy. The wheels could lose their grip when
braking or accelerating. The vehicle could
start to skid.
R if the sensors are dirty or there is poor vis-
ibility, e.g. due to snow, rain or fog. Dis-
tance control may be impaired.
Always pay attention to traffic conditions
even when Distronic is activated. Otherwise,
you may fail to recognise dangers in time,
cause an accident and injure yourself and oth-
ers.
If no car is driving in front of you, Distronic
works like cruise control in the speed range
between 30 km/h and 200 km/h. If a vehicle
is driving in front of you, Distronic Plus works
in the speed range between 0 km/h and
200 km/h.
Do not use Distronic while driving on roads
with steep gradients. 120
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the responsibility to pay attention. The cam-
era cannot show objects:
R very near to the rear bumper
R below the rear bumper
R that are located above the tailgate handle
recess
You are always responsible for safety and
must continue to pay attention to your imme-
diate surroundings when parking and
manoeuvring. This applies to the areas
behind, in front of and next to the vehicle. You
could otherwise endanger yourself and oth-
ers. G
Risk of accident
Under the following circumstances, the
reversing camera will not function, or function
in a limited manner:
R if the tailgate is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the camera is exposed to very bright light R
if the area is lit by fluorescent light (the dis-
play may flicker)
R if there is a sudden change in temperature,
e.g. when driving into a heated garage in
winter
R if the camera lens is dirty or obstructed
R if the rear of your vehicle is damaged. In this
event have the camera position and setting
checked at a qualified specialist workshop.
Mercedes-Benz recommends that you use
a Mercedes-Benz Service Centre for this
purpose.
Do not use the reversing camera in these
types of situation. You could, otherwise,
injure others or damage objects and your
vehicle while you are parking.
Activating the reversing camera X
Make sure that the key is in position 2in
the ignition lock.
X Engage reverse gear.
The area behind the vehicle is shown in the
COMAND APS display. Air conditioning
Overview of air-conditioning systems
The vehicle is equipped with one of the following air-conditioning systems: Thermatic 2-zone automatic climate control
Front control unit Thermatic 2-zone automatic climate control
combines an automatic heating and ventila-
tion system with a cooling system. You can
control the temperature separately for the
driver's and front-passenger sides.136
Air conditioningControls
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Thermotronic multi-zone luxury automatic climate control*
Front control unit
Rear control panel* Thermotronic multi-zone luxury automatic
climate control combines an automatic heat-
ing and ventilation system with a cooling sys-
tem. The temperature and air distribution
can be adjusted separately for the driver's
and front-passenger side as well as for the
rear compartment. You can control the air-
flow separately for the front and rear com-
partments. General notes
Thermatic 2-zone automatic climate control/
Thermotronic luxury multi-zone automatic cli-
mate control* controls the temperature and
the humidity of the vehicle interior and filters
out undesirable substances from the air.
Thermatic 2-zone automatic climate control/
Thermotronic luxury multi-zone automatic cli-
mate control* is only operational when the
engine is running. 25
Optimum operation is
only achieved when you drive with the side
windows and sliding/tilting sunroof* closed.
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 87). This
will speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly. i
The integrated filter can filter out most
particles of dust and completely filters out
pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the
interval for replacing the filter, which is
specified in the Service Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet. G
Risk of accident
Observe the recommended settings on the
following pages. Otherwise, the windows
could mist up. This may prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
25 The "residual heat" function can only be switched on/off when the ignition is switched off. Air conditioning
137Controls
* optional
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Overview of air-conditioning system functions
Thermatic 2-zone automatic climate control Function
:
Sets the temperature, left
;
Sets the air-conditioning system to
automatic
=
Demists the windscreen
?
Increases the airflow
A
Directs the airflow through the
demister vents
B
Switches cooling with air dehumid-
ification on/off
Switches the residual heat function
on/off
C
Sets the temperature, right
D
Switches the rear-compartment air
conditioning on/off
E
Directs the airflow through the
centre and side air vents
F
Directs the airflow to the footwells
and side air vents
G
Displays the airflow level
H
Reduces the airflow
I
Switches the rear window heating
on/off Function
J
Activates/deactivates air-recircu-
lation mode
K
Interior temperature sensor
L
Switches the air conditioning on/
off
i
Instructions and recommendations for
optimum air conditioning:
R activate the air conditioning using
the à andÁ buttons. The indica-
tor lamps in the ÃandÁ buttons
come on.
R set the temperature to 22 †.
R only use the "demisting" function briefly,
until the windscreen is clear again.
R only use the "air-recirculation" mode
briefly, e.g. if there are unpleasant out-
side odours or when in a tunnel. Other-
wise, the windows could mist up due to
a lack of fresh air.
R use the "residual heat" function if you
want to heat or ventilate the vehicle inte-
rior when the ignition is switched off. The
"residual heat" function can only be acti-
vated or deactivated with the ignition
switched off. 138
Air conditioningControls
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Thermotronic luxury multi-zone automatic climate control*
Function
Front control unit
:
Sets the temperature, left
;
Sets the air-conditioning system to
automatic
=
Directs the airflow through the
demister vents, left
?
Demists the windscreen
A
Increases the airflow
B
Switches the rear window heating
on/off
C
Directs the airflow through the
demister vents, right
D
Operates the rear-compartment air
conditioning via the rear control
panel E
Sets the temperature, right
F
Switches the air conditioning on/
off Function
G
Directs the airflow to the footwells
and side air vents, right
H
Directs the airflow through the
centre and side air vents, right
I
Switches cooling with air dehumid-
ification on/off
Switches the residual heat function
on/off
J
Display
K
Reduces the airflow
L
Activates/deactivates air-recircu-
lation mode
M
Directs the airflow through the
centre and side air vents, left
N
Directs the airflow to the footwells
and side air vents, left
O
Interior temperature sensor
P
Switches the mono function on/off
Rear control panel* Air conditioning
139Controls
* optional
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Function
Q
Increases the airflow
R
Sets the temperature
S
Controls the rear-compartment air
conditioning automatically
T
Directs the airflow through the rear
air vents
U
Directs the airflow through the foot-
well vents
V
Switches the rear-compartment air
conditioning on/off
W
Reduces the airflow
i
Instructions and recommendations for
optimum air conditioning:
R activate the air conditioning using
the à andÁ buttons. The indica-
tor lamps in the ÃandÁ buttons
come on.
R set the temperature to 22 †.
R only use the "demisting" function briefly,
until the windscreen is clear again.
R only use the "air-recirculation" mode
briefly, e.g. if there are unpleasant out-
side odours or when in a tunnel. Other-
wise, the windows could mist up due to
a lack of fresh air.
R use the "residual heat" function if you
want to heat or ventilate the vehicle inte-
rior when the ignition is switched off. The
"residual heat" function can only be acti-
vated or deactivated with the ignition
switched off.
R use the "MONO" function if you want to
adopt the temperature, air distribution
and airflow settings from the driver's side
for all air-conditioning zones. The indica-
tor lamp in the ºbutton comes on. Switching the air conditioning on/off
i When the air conditioning is switched off,
the air supply and air circulation are also
switched off. Only select this setting briefly,
otherwise the windows may mist up.
i Activate the air conditioning primarily
using the Ãbutton (Y page 141).
Activating and deactivating the front-
compartment air conditioning via the
front control unit X
Turn the key to position 2in the ignition
lock.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button.
The indicator lamp in the ^button goes
out. The previously selected settings come
into effect again.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up.
Activating/deactivating the rear-com-
partment air conditioning via the front
control unit (Thermatic 2-zone auto-
matic climate control) X
Turn the key to position 2in the ignition
lock.
X To activate/deactivate: press the^
button (Y page 138).
The indicator lamp in the ^button lights
up or goes out. 140
Air conditioningControls
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Activating/deactivating the rear-com-
partment air conditioning via the front
control unit* (Thermotronic multi-zone
luxury automatic climate control*)
X
Turn the key to position 2in the ignition
lock.
X To switch on: press theYbutton
(Y page 139).
ON and MODE are shown in the Thermotronic
multi-zone luxury automatic climate con-
trol* display behind the Ysymbol. The
MODE display goes out after three seconds.
The display switches back to the standard
display.
X To deactivate: press theYbutton
(Y page 139).
MODE is shown in the display behind the
Y symbol.
X Press the ^button (Y page 139).
OFF is shown in the display behind the
Y symbol.
Activating/deactivating the rear-com-
partment air conditioning via the rear
control unit* (Thermotronic multi-zone
luxury automatic climate control*) X
Turn the key to position 2in the ignition
lock.
X Activate Thermotronic multi-zone luxury
automatic climate control*.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up. Switching cooling with air dehumidi-
fication on/off
The "cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and dehumidified according to the temperature
selected. G
Risk of accident
If you switch off the "Cooling with air dehu-
midification" function, the air inside the vehi-
cle will not be cooled (in warm weather) or
dehumidified. The windows could mist up
more quickly. This may prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
Condensation may drip from the underside of
the vehicle when Thermatic is in cooling
mode.
X To activate: press theÁbutton.
The indicator lamp in the Ábutton
comes on.
X To switch off: press theÁbutton.
The indicator lamp in the Ábutton goes
out. The cooling with air dehumidification
function has a delayed switch-off feature. Controlling the air conditioning auto-
matically
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
The automatic air conditioning will achieve
optimal operation if "cooling with air dehu-
midification" is also activated. If necessary,
cooling with air dehumidification can be deac-
tivated.
Controlling the front-compartment air
conditioning via the front control unit X
Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To switch on: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated. Air conditioning
141Controls
* optional
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