2018 MERCEDES-BENZ GLS Owners Manual

Rear control panelq
Sets rear-compartment climate control to automatic ( Y
page 132)r
Directs the air distribution through the rear air vents ( Y
page 133)s
Switches the seat heating on the right-hand side on/off ( Y
page 106)t
Directs the air distribution through the footwell vents ( Y
page 133)u
Switches the rear climate control on/off ( Y
page 131)v
Switches the seat heating on the left-hand side on/off ( Y
page 106)
Control panel for 3-zone automatic climate control
USA only
Front control panelC
Sets the temperature, left ( Y
page 132)D
Defrosts the windshield ( Y
page 133)

v
Sets rear-compartment climate control to automatic ( Y
page 132)w
Directs the airflow through the rear air vents ( Y
page 133)x
Switches the seat heating on the right-hand side on/off ( Y
page 106)y
Directs the airflow through the footwell vents ( Y
page 133)z
Switches the rear climate control on/off ( Y
page 131){
Reduces the airflow ( Y
page 133)|
Switches the seat heating on the left-hand side on/off ( Y
page 106)
Canada only
Front control panelC
Sets the temperature, left ( Y
page 132)D
Defrosts the windshield ( Y
page 133)

y
Directs the airflow through the footwell vents ( Y
page 133)z
Switches the rear climate control on/off ( Y
page 131){
Reduces the airflow ( Y
page 133)|
Switches the seat heating on the left-hand side on/off ( Y
page 106)
Control panel for 3-zone automatic climate control with additional rear-com-
partment climate control
USA only
Front control panelC
Sets the temperature, left ( Y
page 132)D
Defrosts the windshield ( Y
page 133)

v
Sets rear-compartment climate control to automatic ( Y
page 132)w
Directs the airflow through the rear air vents ( Y
page 133)x
Directs the airflow through the footwell vents ( Y
page 133)y
Switches the rear climate control on/off ( Y
page 131)z
Reduces the airflow ( Y
page 133)
Canada only
Front control panelC
Sets the temperature, left ( Y
page 132)D
Defrosts the windshield ( Y
page 133)

y
Switches the rear climate control on/off ( Y
page 131)z
Reduces the airflow ( Y
page 133)
Optimum use of automatic climate
control The following contains notes and recommenda-
tions on optimum use of the dual-zone auto-
matic climate control or 3-zone automatic cli-
mate control. R
You can switch on climate control by using the
X and Z or X and V buttons.
The indicator lamps in the X and
Z buttons or the X and V buttons
light up. R
Vehicles with 3-zone automatic climate
control: in automatic mode, you can also use
the

Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and P Solutions
The indicator lamp in the
Z or V button
flashes three times or
remains off. The "Cool-
ing with air dehumidifi-
cation" function cannot
be switched on. Cooling with air dehumidification has been deactivated due to a mal-
function. X
Visit a qualified specialist workshop.
Setting climate control to automatic
General notes In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature
of the dispensed air, the airflow and the air dis-
tribution.
The "Cooling with air dehumidification" function
is activated automatically in automatic mode.
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 H in the igni-
tion lock ( Y
page 140).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

The temperature setting for the driver's side
is adopted for the rear compartment and the
front-passenger side. X
Turn thumbwheel C to the left or right
( Y
page 127).
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †). X
To increase or decrease the rear compart-
ment temperature using the rear control
panel: turn control u counter-clockwise or
clockwise on the rear control panel
( Y
page 127).
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Setting the air distribution
Air distribution settings Front control panel

Activating/deactivating X
Turn th e SmartKey to position H in th e igni-
tion loc k ( Y
page 140).X
To activate: press th e d button.
The indicator lamp in th e d butto n lights
up.
The climat e control system switches to th e
followin g settings:R
high airflow R
high temperature R
air distribution to th e windshield and fron t
side windows R
air-recirculation mod e offX
To deactivate: press th e d button.
The indicator lamp in th e d butto n goe s
out . The previously selected setting s are
restored . Air-recirculation mod e remain s
deactivated.
MAX COOL ma ximum coolingThe MA X COOL function is only available in vehi-
cle s for th e USA.
MA X COOL is only operational when th e engin e
is running. X
To activate: press th e