2023 MERCEDES-BENZ GLS Owners Manual

Overview of the rear passenger compartment
operating unitExample: USA1Sets the temperature, les2Sets the air distribution, les3Sets climate control to automatic mode
(  page 168)4Setting the airOow5Switches climate control on/oM
(  page 167)Switching residual heat on/oM( page 169)6Sets the air distribution, right7Sets the temperature, rightThe settings for the second and third row of seats
(equipment-dependent) can be made via the rear
passenger compartment operating unit, the multi-
media system (  page 168) or the MBUX rear
passenger compartment tablet depending on the
vehicle\bs equipment.
Operating the climate control system
Switching climate control on/oM
To switch on: set the airOow to level 1 or
higher using the + button.To switch oM: set the airOow to level 0 using
the + button.
If climate control is switched oM, the windows
may fog up more quickly. Switch climate control oM only brieOy.
Switching the climate control in the rear
passenger compartment on/oM
Press button 5.\bWhen climate control in the second seat row
is switched oM, the indicator lamp is activated
and OFF is shown on the rear display.
Switching the A/C function on/oM using the air
conditioning control panel
The A/C function heats, cools and dehumidiNes
the vehicle\bs interior air.
Press the V button.
Switch oM the A/C function only brieOy, otherwise
the windows may fog up more quickly.
Condensation may drip from the underside of the vehicle when cooling mode is active. This is not
indicative of a malfunction.
Calling up the air conditioning menu
Calling up the air conditioning menu using the
multimedia system
Select one of the temperature displays at the lower edge of the media display.Climate control167

Activating/deactivating the A/C function via themultimedia system
Multimedia system:
4 Climate Menu 5
First Row of Seats
The A/C function heats, cools and dehumidiNes
the vehicle\bs interior air.
Select A/C.
Sets climate control to automatic mode
In automatic mode, the set temperature is con-
trolled and maintained at a constant level by the air supply.
Press button X .To switch to manual mode: press the X
button.
In automatic mode, you can choose between Nve
diMerent air quantities using the + button.
Automatic mode is retained.
Automatically controlling the climate control in the rear passenger compartment
In automatic mode, the set temperature is regula-
ted by the temperature of the dispensed air and
the airOow.
Press button X .
Setting the air distribution
Multimedia system:
4 Climate Menu
Call up the air conditioning menu
(  page 167).Select a row of seats.To set the air distribution: select a,

Deactivating rear climate controlSelect REAR OFF .
The rear climate control is deactivated.
Switching the synchronization function on/oM via
the air conditioning control panel
Climate control can be set centrally using the syn-
chronization function. The temperature and air
distribution setting for the driver\bs side will be adopted automatically for all climate control
zones.
Press the  button.
The synchronization function will be deactivated if
the settings for one of the other climate zones are
changed.
Switching the synchronization function on/oM via
the multimedia system
Multimedia system:
4 Climate Menu 5
First Row of Seats
Climate control can be set centrally using the syn-
chronization function. The driver\bs settings for
temperature, air quantity and air distribution will
be adopted automatically for all climate zones.Select SYNC and switch on or oM.
Defrosting windows
Windows fogged up on inside
Press the X button.If the windows remain fogged up: press
the d button.
Windows fogged up on outside
Switch on the windshield wiper.Press the X button.
Switching air-recirculation mode on/oM
Press the r button.
The interior air will be recirculated.
Air-recirculation mode automatically switches to
fresh air mode aser a while.
\bIf air-recirculation mode is switched on, the
windows may fog up more quickly. Switch on
air-recirculation mode only brieOy.
Switching the residual heat on or oM
Requirements:
= The vehicle is parked.
It is possible to make use of the residual heat from the engine to continue heating or ventilating
the front compartment of the vehicle for approx-
imately 30 minutes, depending on the tempera- ture set.
To activate: press V button.
Residual heat will be switched oM automatically.
Switching the residual heat in the rear passenger
compartment on/oM
Requirements
= The vehicle is parked.
When the residual heat of the engine is activated in the rear passenger compartment, you can heat
Climate control169

or ventilate the rear passenger compartment forapproximately 30 minutes.Press button 5 ( page 167).
Activating/deactivating ionization
Multimedia system:
4 Climate Menu 5
Air Quality
Ionization improves the quality of the vehicle\bs interior air. Ionization of the interior air is odor-
less.
Select IONIZATION and activate or deactivate
the function.
Fragrance system
Setting the fragrance system
Requirements
= Automatic climate control is activated.
= The glove box is closed.
Multimedia system:
4 Climate Menu 5
Air Quality
The fragrance system distributes a pleasant fra-
grance throughout the vehicle interior from a Oa-
con located in the glove box.Select AIR FRESHENER .Keep pressing until the desired intensity is
reached.
Inserting or removing the Oacon of the fragrance
system
&WARNING Risk of injury from liquid per-
fume
If children open the Oacon, they could drink
the liquid perfume or it could come into con-
tact with their eyes.
Do not leave children unattended in the
vehicle.Consult a doctor immediately if liquid
perfume has been drunk.If liquid perfume comes into contact with
your eyes or skin, rinse your eyes with
clean water.If symptoms continue, consult a doctor.+ENVIRONMENTAL NOTE Environmental
damage due to improper disposal of full
Oacons
Full Oacons must not be disposed of
with household waste.

Full Oacons must be taken to a
harmful substance collection point.
170Climate control

1Cap2FlaconTo insert: slide the Oacon into the holder as far
as it will go.To remove: aser opening the glove box, wait
for approximately seven seconds and pull out
the Oacon.If you do not use genuine Mercedes-Benz interior
perfumes, observe the manufacturers\b safety noti-ces on the perfume packaging.
Dispose of the genuine Mercedes-Benz interior
perfume Oacon when it is empty and do not reNll
it.
ReNllable OaconUnscrew the cap of the empty Oacon.Fill the Oacon with a maximum of 0.5 O. oz.
(15 ml).Screw the cap back onto the Oacon.
Always reNll the empty reNllable Oacon with the
same perfume. Observe the separate information
sheet with the Oacon.
Information on the windshield heater
The windshield heater is switched on automati-
cally when the d button is activated.
In addition, it is automatically switched on when
necessary.
Air vents
Adjusting the front air vents
&WARNING Risk of burns or frostbite due to
being too close to the air vents
Very hot or very cold air can Oow from the air
vents.
Make sure that all vehicle occupants always maintain a suPcient distance
from the air vents.If necessary, direct the airOow to another
area of the vehicle interior.
To ensure the Oow of fresh air through the air
vents into the vehicle interior, note the following:
= Always keep the vents and ventilation grilles in
the vehicle interior clear.
= Keep the air inlet free of residue build-up
(  page 345).
= Optimum climate comfort is achieved with the
air vents in the center position.
Climate control171

To open or close center air vent: turn control-
ler 2 up or down as far as it will go.To open or close side air vents: turn control-
ler 2 to the les or right as far as it will go.To adjust the air direction: hold air vent 1 in
the center and move it up or down or to the les or right.Adjusting the rear passenger compartment air
vents
Air vents in the center console
Air vents in the B-pillar
172Climate control

Air vents above the second and third rows of seats(all vehicles except Mercedes-Maybach vehicles)
To set the airOow direction: hold the center of
air vent 1 and move it accordingly.To open or close: turn controller 2 as far as
it will go.
Air vents above the second row of seats, towards the cargo compartment (Mercedes-Maybach vehicles)
To open or close: turn controller 1 as far as
it will go.Opening or closing the air vent in the glove box*NOTE Damage to temperature-sensitive
objects in the glove box
Temperature-sensitive objects stored in the
glove box may be damaged by the air vent located inside it.
Close the air vent when you heat thevehicle.At high outside temperatures, open the
air vent and switch on the A/C function.
The automatic climate control must be switched
on to cool the glove box.
Climate control173

To open or close: turn controller 1 of air vent
2 clockwise or counter-clockwise.174Climate control