Climate Control MERCEDES-BENZ GL-Class 2013 X166 Owner's Guide

Setting the air distribution
Air distribution settings Front control panel
001C
Directs the airflow through the center
vents
001B Directs air through the footwell air
vents
001D Directs the airflow through the center
and footwell vents
0008 Directs air through the defroster vents
0015 Directs the airflow through the
defroster and center vents (Canada
only)
0014 Directs air through the defroster and
footwell vents
0017 Directs the airflow through the
defroster, center and footwell air vents
(Canada only)
Rear control panel
001A Directs the airflow through the rear
center and rear side air vents
001B Directs air through the footwell air
vents
i Using the rear control panel, you can also
activate both air distribution positions
simultaneously .Inorder to do this, press
both air distributio nbuttons. The air is then
routed through all rear air vents.
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents .The side air vents can only be
closed when the controls on the side air
vents are turned downwards. Adjusting X
Turn the SmartKey to position 2in the
ignition lock (Y page 163).
X Press the 0017button repeatedly until the
desired symbol appears in the display. Setting the airflow
X
Turn the SmartKey to position 2in the
ignition lock (Y page 163).
X To increase: press the0019button.
X To reduce: press the0018button.
i You can use 3-zone automatic climate
control to set the airflow in the rear
compartments eparately.154
Operating the climate control systemsClimate control

Switching the ZONE function on/off
X
To activate: press the0004button.
The indicator lamp above the 0004button
lights up.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side
and the rear compartment.
X To deactivate: press the0004button.
The indicator lamp above the 0004button
goes out.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side and
the rear compartment. Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "defrosting" function as soon
as the windshield is clear again.
X Turn the SmartKey to position 2in the
ignition lock (Y page 163).
X To activate: press the0009button.
The indicator lamp in the 0009button lights
up. The climate control system switches to the
following functions:
R
high airflow
R high temperature
R air distribution to the windshield and
front side windows
R air-recirculation mode off
X To deactivate: press the0009button.
The indicator lamp in the 0009button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
X Press the 0006button.
The indicator lamp in the 0009button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn controls 0002or001F clockwise or
counter-clockwise:
Dual-zone automatic climate control
(Y page 143)
3-zone automatic climate control
(Y page 146)
or
X Press the 0019or0018 button. MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA. MAX COOL is only operational when the
engine is running.Operating the climate control systems
155Climate control

X
To activate: press the0001button.
The indicator lamp in the button lights up.
X To activate: press off-road button 0001
again.
The indicator lamp goes out. The previously
selected settings are restored.
Whe nyou activate MAX COOL, climate
control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on Defrosting the windows
Windows fogged up on the inside X
Activate the 0007/0005 cooling with air
dehumidification function.
X Activate automatic mode 0006.
X If the windows continue to fog up, activate
the defrosting function (Y page 155).
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X
Press the 0017button repeatedly until the
001C or001B symbol appears in the
display.
i You should only select this setting until
the windshield is clear again. Rear window defroster
Activating/deactivating The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
X
Turn the SmartKey to position 2in the
ignition lock (Y page 163).
X Press the 000Dbutton.
The indicator lamp in the 000Dbutton lights
up or goes out. 156
Operating the climate control systemsClimate control

Problems with the rear window defroster
Problem Possible causes/consequences and
0001 Solutions
The rear window
defroster has
deactivated
prematurely or cannot
be activated. The battery has not been sufficiently charged.
X
Switch off any consumers that are not required, e.g. reading
lamps or interior lighting.
When the battery is sufficiently charged, the rear window
defroster is activated again automatically. Activating/deactivating air-
recirculation mode
Points to observe before use You can deactivate the flow of fresh air if
unpleasant odors are enteringt he vehicle
from outside. The air already inside the
vehicle will then be recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
Activating/deactivating The operation of air-recirculation mode is the
same for all control panels.
X Turn the SmartKey to position 2in the
ignition lock (Y page 163).
X To activate: press the0016button.
The indicator lamp in the 0016button lights
up.
i In the event of high pollution levels (3-
zone automatic climate control only) or at high outside temperatures, air-
recirculation mode is automatically
activated. When air-recirculation mode is
activated automatically, the indicator lamp
in the
0016button is not lit.
Outside air is added after about
30 minutes.
X To deactivate: press the0016button.
The indicator lamp in the 0016button goes
out.
i Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡(5 †)if the "Cooling
with air dehumidification" function is
activated Activating/deactivating the residual
heat function
The "residual heat" function is only available
in Canada. Operating the climate control systems
157Climate control

It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
X
To activate: press the0003/0005 button.
The indicator lamp in the 0003/0005
button lights up.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
mediums peed.
X To deactivate: press the0003/0005
button.
The indicator lamp in the 0003/0005
button goes out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is activated Setting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air
outlets. If necessary, redirec
tthe airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet grille on the hood and in
the engine compartment on the front-
passenger side free of blockages, such as
ice, snow or leaves.
R never cover the air vents or air intake grilles
in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position. Setting the center air vents
0002
Center air vent, left
0003 Center air vent, right
0021 Center vent thumbwheel, right
0020 Center vent thumbwheel, left
X To open/close: turn thumbwheels 0021
and 0020to the right or left. 158
Setting the air ventsClimate control

Setting the side air vents
0002
Side window defroster vent
0003 Side air vent
0021 Control for side air vent
X To open/close: turn thumbwheel 0021up or
down. Setting the glove box air vent
! Close the air vent when heating the
vehicle.
At high outside temperatures, open the air
vent and activate the "cooling with air
dehumidification" function. Otherwise,
temperature-sensitive items stored in the
glove box could be damaged. 0002
Air vent thumbwheel
0003 Air vent
When automatic climate control is activated,
the glove box can be ventilated, for instance
to cool its contents. The level of airflow
depends on the airflow and air distribution
settings. X
To open/close: turn thumbwheel 0002
clockwise or counter-clockwise. Setting the rear-compartment air
vents
Setting the center vents in the rear
compartment Example: center vents with rear control panel
0002
Rear-compartment air vent thumbwheel
0003 Rear-compartment air vent, right
0021 Rear control panel
0020 Rear-compartment air vent, left
X To open/close: turn thumbwheel 0002up or
down.
Setting the rear-compartment side air
vents 2nd row of seats
0002
B-pillar air vent
0003 Thumbwheel for B-pillar air vent Setting the air vents
159Climate control Z

X
To open/close: turnthumbwheel 0003to the
left or right. B-pillar air vent in the headliner
0002
B-pillar air vent
0003 Thumbwheel for B-pillar air vent
X To open/close: turn thumbwheel 0003up or
down.
3rd row of seats B-pillar air vent in the headliner
0002
B-pillar air vent
0003 Thumbwheel for B-pillar air vent
X To open/close: turn thumbwheel 0003up or
down. 160
Setting the air ventsClimate control

Example:
R Treadwear grade: 200
R Traction grade: AA
R Temperature grade: A
All passenger car tires must conform to the
statutory safety requirements in additio nto
these grades.
i The actual values for tires are vehicle-
specifi cand may deviate from the values in
the illustration.
Treadwear The treadwea
rgrade is a comparative rating
based on the wearr ate of the tire when tested
unde rcontrolled conditions on a specified
U.S. government course. For example, a tire
graded 150 would wear one and one-half
times as well on the government test track as
a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly from
the norm, due to variations in driving habits,
service practices and differences in road
characteristics and climate conditions.
Traction G
WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
! Avoid wheelspin. This can lead to damage
to the drive train.
The traction grades, from highest to lowest,
are AA, A, B, and C. Those grades represent
the tire's ability to stop on a wet surface as
measured under controlled conditions on
specified government test surfaces of asphalt
and concrete. Atire marked C may have poor
traction performance. The safe speed on a wet, snow covered or icy
road is always lower than on dry road
surfaces.
You should pay special attention to road
conditions when temperatures are around
freezing point.
Mercedes-Benz recommends a minimum
tread depth of
0009in(4 mm) on all four winter
tires. Observe the legally required minimum
tire tread depth (Y page 401). Winter tires can
reduce the braking distance on snow-covered
surfaces in comparison with summer tires.
The braking distance is still much further than
on surfaces that are not icy or covered with
snow. Take appropriate care when driving.
Further information on winter tires (M+S
tires) (Y page 402).
Temperature G
WARNING
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause
excessive heat build-up and possible tire
failure.
The temperature grades are A(the highest),
B, and C. These represent the tire's
resistance to the generatio nofheat and its
ability to dissipate heat when tested under
controlled conditions on a specified indoor
laboratory test wheel. Sustained high
temperature can cause the material of the tire
to degenerate and reduce tire life, and
excessive temperature can lead to sudden
tire failure. The grade Ccorresponds to a level
of performance which all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law. 416
All about wheels and tiresWheels and tires

R
windshield washer fluid
R climate control system refrigerant
Comply with all valid regulations with respect
to handling, storing, and disposing of service
fluids.
Components and service products must be
matched. You should therefore only use
products that have been tested and approved
by Mercedes-Benz.
Information on tested and approved products
can be obtained at an authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved
by Mercedes-Ben zby the following
inscription on the containers:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51)
Other designations or recommendations
indicate a level of quality or a specification in
accordance with an MB Sheet number (e.g.
MB 229.5). The yhave no tnecessarily been
approved by Mercedes-Benz. Fuel
Important safety notes G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling. G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children. If you or others come into contact with fuel,
observe the following:
R
Wash away fuel from skin immediately
using soap and water.
R If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance
without delay.
R If fuel is swallowed, seek medical
assistance without delay. Do not induce
vomiting.
R Immediately change out of clothing which
has come into contact with fuel.
Tank capacity Model Total
capacity All models
26.4 US gal
(100.0 l) Model Of which
reserve All models
Approx.
3.2 US gal (12.0 l) GL 63 AMG 4MATIC
Approx.
3.7 US gal (14.0 l) Gasoline
Fuel grade
!
Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the
ignition if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. Notify a
qualified specialist workshop and have the
fuel tank and fuel lines drained completely. 440
Service products and filling capacitiesTechnical data