2016 MERCEDES-BENZ GL light

y
Switches the rear climate control on/off ( Y
page 152)z
Reduces the airflow ( Y
page 156)
Optimum use of 3-zone automatic cli-
mate controlThe following contains instructions and rec-
ommendations to enable you to get the most
out of your dual-zone automatic climate con-
trol. R
You can switch on climate control by using
the X and Z or X and V but-
tons. The indicator lamps in the X and
Z or X and V buttons light up.R
In automatic mode, you can also use the

Switching cooling with air dehumidi-
fication on/off
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore, only
deactivate the "Cooling with air-dehumidifi-
cation" function briefly.
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.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunc-
tion.
Activating or deactivating
Example: Z buttonX
To activate: press the Z or V but-
ton.
The indicator lamp in the Z or V
button lights up. X
To deactivate: press the Z or V
button.
The indicator lamp in the Z or V
button goes out. The "Cooling with air dehu-
midification" function has a delayed switch-
off feature. Operating the climate control systems 153
Climate control

Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and P Solutions
The indicator lamp in
the Z or V but-
ton flashes three times
or remains off. The
"Cooling with air dehu-
midification" function
cannot be switched on. Cooling with air dehumidification has been deactivated due to a
malfunction. X
Visit a qualified specialist workshop.
Setting climate control to automatic
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore, only
deactivate the "Cooling with air-dehumidifi-
cation" function briefly.
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.
Automatic mode will achieve optimal opera-
tion if cooling with air dehumidification is also
activated. If necessary, cooling with air dehu-
midification can be deactivated.
In the rear compartment, you can also switch
climate control for the rear seats to automatic
mode using the X button. Automatic control
X
Turn the SmartKey to position 2 in the igni-
tion lock ( Y
page 165). X
Set the desired temperature. X
To activate: press the X button.
The indicator lamp in the X button lights
up. Automatic air distribution and airflow
are activated. X
To switch to manual mode: press the

Adjusting the climate mod e settingsYou can select th e followin g climat e mod e
setting s in automatic mode:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUS El ow airflow, slightly warmer and
draft-free setting
X
Turn the SmartKey to position 2 in the igni-
tion lock ( Y
page 165).X
Press the X button.X
Press the

Problems with the rear window defroster Problem
Possible causes/consequences and P Solutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged. X
Switch off any consumers that are not required, e.g. reading
lamps, interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window
defroster can be activated again.
Switching air-recirculation mode
on/off
General notes You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in particu-
lar at low temperatures. Only use air-recircu-
lation mode briefly to prevent the windows
from fogging up.
Activating or deactivating
X
Turn the SmartKey to position 2 in the igni-
tion lock ( Y
page 165).X
To activate: press the

Activating or deactivatingX
To act iva te: press th e K or V but -
ton.
The indicator lamp in th e K or V
butto n lights up.
i The blowe r will run at a low spee d regard-
less of th e airflow setting .
i If you activat e th e residual heat function
at high temperatures , only th e ventilation
will be activated. The blowe r run s at
medium speed. X
To deacti va te: press th e K or V
button.
The indicator lamp in th e K or V
butto n goes out .
Residual heat is deactivated automatically: R
after approximately 30 minute sR
when th e ignition is switched onR
if th e battery voltag e drops
Setting the air vents
Import ant safety notes
G WARNIN G
Ver y hot or ver y cold air can flo w from th e air
vents . This could result in burn s or frostbit e in
th e immediat e vicinity of th e air vents . There
is a ris k of injury.
Mak e sur e that all vehicl e occupant s always
maintai n a sufficien t distanc e to th e air out -
lets. If necessary, redirect th e airflow to
another area of th e vehicl e interior. In order to en sure th e direct flo w of fr esh air
throug h th e air vents int o th e vehicl e interior,
pleas e observ e th e followin g notes:R
keep th e air inlet grille on th e hoo d and in
th e engin e compartmen t on th e front-
passenger side free of blockag es, suc h as
ice , sn ow or leav es. R
never cover th e air vents or air intake grilles
in th e vehicl e interior.
i Fo r virtually draft-free ventilation , adjust
th e sliders of th e air vents to th e center
position .
Setting the center air vents
C
Cente r air vent, lef tD
Cente r air vent, right

Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
To start the vehicle without actively using the
SmartKey: R
the Start/Stop button must be inserted in
the ignition lock. R
the SmartKey must be in the vehicle. R
the vehicle must not be locked with the
SmartKey or KEYLESS-GO ( Y
page 83).
Do not keep the SmartKey: R
with electronic devices, e.g. a mobile
phone or another SmartKey. R
with metallic objects, e.g. coins or metal
foil. R
inside metallic objects, e.g. a metal case.
This can impair the functionality of the KEY-
LESS-GO key.
Do not keep the KEYLESS-GO key in the tem-
perature-controlled cup holder ( Y
page 349).
Otherwise, the KEYLESS-GO key will not be
recognized.
If you lock the vehicle with the SmartKey's
remote control or with KEYLESS-GO, after a
short time: R
you will not be able to switch on the ignition
with the Start/Stop button. R
you will not be able to start the engine with
the Start/Stop button until the vehicle is
unlocked again.
If you lock the vehicle centrally using the but-
ton on the front door ( Y
page 91), you can
continue to start the engine with the Start/
Stop button.
The engine can be switched off while the vehi-
cle is in motion by pressing and holding the
Start/Stop button for three seconds. This
function operates independently of the ECO start/stop automatic engine switch-off func-
tion.
Key positions with KEYLESS-GO
C
Start/Stop button D
Ignition lock
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Further information on situations where
an indicator lamp either fails to go out after
starting the engine or lights up while driving
( Y
page 326).
If Start/Stop button C has not yet been
pressed, this corresponds to the key being
removed from the ignition. X
To switch on the power supply: press
Start/Stop button C once.
The power supply is switched on. You can
now activate the windshield wipers, for
example.
The power supply is switched off again if: R
the driver's door is opened and R
you press Start/Stop button C twice when
in this position X
To switch on the ignition: press Start/
Stop button C twice.
The ignition is switched on.
If you press Start/Stop button C once
when in this position, the ignition is deac-
tivated again.
Removing the Start/Stop button
You can remove the Start/Stop button from
the ignition lock and start the vehicle as nor-
mal using the SmartKey.166
Driving
Driving and parking

It is only possible to switch between KEY-
LESS-GO mode and SmartKey operation
when the transmission is in position P .X
Remove Start/Stop button C from ignition
lock D .
You do not have to remove the Start/Stop
button from the ignition lock when you leave
the vehicle. You should, however, always take
the SmartKey with you when leaving the vehi-
cle. As long as the SmartKey is in the vehicle: R
the vehicle can be started using the Start/
Stop button R
the electrically powered equipment can be
operated
Starting the engine
Important safety notes
G WARNING
If children are left unsupervised in the vehicle,
they could: R
open the doors, thus endangering other
people or road users. R
get out and disrupt traffic. R
operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they: R
release the parking brake. R
shifting the automatic transmission out of
park position PR
Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
G WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave the engine running in enclosed spaces with-
out sufficient ventilation.
G WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
! Do not depress the accelerator when
starting the engine.
General notes Vehicles with a gasoline engine: the cata-
lytic converter is preheated for up 30 seconds
after a cold start. The sound of the engine may
change during this time.
Automatic transmission X
Shift the transmission to position P
( Y
page 174).
The transmission position display in the
multifunction display shows
P ( Y
page 174).
i You can start the engine in transmission
position P and N .
Starting procedure with the SmartKey X
To start a diesel engine : turn the Smart-
Key to position 2 in the ignition lock
( Y
page 165).
The \( preglow indicator lamp in the
instrument cluster lights up. X
Turn the SmartKey to position 3 in the igni-
tion lock and release it as soon as the
engine is running ( Y
page 165).
i Vehicles with a diesel engine: you can
start the engine without preglow if the
engine is warm. Driving 167
Driving and parking Z