MERCEDES-BENZ GLS 2017 Owners Manual

X
Press on housing cover C and turn it to the
right. X
Replace the cover in the front wheel housing
( Y
page 118).
High-beam headlamps X
Switch off the lights. X
Open the hood. X
Turn housing cover C counter-clockwise and
remove it. X
Pull lever

Combination swit ch
G
? Windshield wiper offH
b Intermittent wipe, low (rain sensor set
to low sensitivity)I
c Intermittent wipe, high (rain sensor
set to high sensitivity)J

Hold the windshield wiper arm firmly when
you change the wiper blade. If you release the
wiper arm without a wiper blade and it falls
onto the windshield/rear window, the wind-
shield/rear window may be damaged by the
force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
Changing the windshield wiper blades Removing the wiper blades X
Remove the SmartKey from the ignition lock. X
Fold the wiper arm away from the windshield.
X
Firmly press release knob C and pull wiper
blade D upwards from the wiper arm in the
direction of the arrow.
Installing the wiper blades X
Position new wiper blade C in the retainer on
the wiper arm and slide it into place in the
direction of the arrow.
The wiper blade audibly engages. X
Make sure that the wiper blade is seated cor-
rectly. X
Fold the wiper arm back onto the windshield.
Replacing the rear window wiper blade Removing a wiper blade
X
Remove the SmartKey from the ignition lock. X
Fold wiper arm C away from the rear window
until it engages. X
Position wiper blade D at a right angle to
wiper arm C . X
Hold wiper arm C and press wiper blade D
in the direction of the arrow until it releases. X
Remove wiper blade D .
Installing a wiper blade X
Place new wiper blade D onto wiper arm C .X
Hold wiper arm C and press wiper blade D
in the opposite direction to the arrow until it
engages. X
Make sure that wiper blade D is seated cor-
rectly. X
Position wiper blade D parallel to wiper
arm C . X
Fold wiper arm C back onto the rear window.Windshield wipers 121
Lights and windshield wipers Z

Problems with the windshield wipers Problem
Possible causes/consequences and P Solutions
The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield wiper
movement. The wiper motor has been deactivated. X
For safety reasons, you should remove the SmartKey from the igni-
tion lock.
or X
Switch off the engine using the Start/Stop button and open the
driver's door. X
Remove the cause of the obstruction. X
Switch the windshield wipers back on.
The windshield wipers
fail completely. The windshield wiper drive is malfunctioning. X
Select another wiper speed on the combination switch. X
Have the windshield wipers checked at a qualified specialist work-
shop.122
Windshield wipers
Lights and windshield wipers

Overview of climate control systems
General notes Observe the settings recommended on the fol-
lowing pages. The windows could otherwise fog
up.
To prevent the windows from fogging up: R
switch off climate control only briefly R
switch on air-recirculation mode only briefly R
switch on the cooling with air dehumidifica-
tion function R
switch on the defrost windshield function
briefly, if required
Climate control regulates the temperature and
the humidity in the vehicle interior and filters
undesirable substances out of the air.
The residual heat function can only be activated
or deactivated with the ignition switched off
( Y
page 133).
i Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature ( Y
page 87).
This will speed up the cooling process and the
desired interior temperature will be reached
more quickly. If you start the engine using your smartphone,
the last selected climate control setting is reac-
tivated ( Y
page 140).
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants
and odors. 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 Maintenance Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance Book-
let.
i Vehicles with AIR-BALANCE package: in
addition to ionization, the vehicle has an air
filter with anti-allergenic properties that con-
tribute to improved air filtration.
i It is possible that under certain circumstan-
ces the residual heat function may be activa-
ted automatically an hour after the SmartKey
has been removed in order to dry the auto-
matic climate control. The vehicle is then ven-
tilated for 30 minutes.
Control panel for dual-zone automatic climate control
USA only
Front control panel
C
Sets the temperature, left ( Y
page 131)
D
Defrosts the windshield ( Y
page 132)Overview of climate control systems 123
Climate control

Rear control panelC
Sets rear-compartment climate control to automaticD
Switches the rear climate control on/off

n
Increases the airflow ( Y
page 131)o
Reduces the airflow ( Y
page 131)p
Displayq
Adjusts the climate mode settings ( Y
page 130)r
Switches air-recirculation mode on/off ( Y
page 133)s
Sets climate control to automatic ( Y
page 130)
Rear control panelt
Increases the airflow ( Y
page 131)u
Sets the temperature ( Y
page 131)v
Sets rear-compartment climate control to automatic ( Y
page 130)w
Directs the airflow through the rear air vents ( Y
page 131)x
Switches the seat heating on the right-hand side on/off ( Y
page 103)y
Directs the airflow through the footwell vents ( Y
page 131)z
Switches the rear climate control on/off ( Y
page 129){
Reduces the airflow ( Y
page 131)|
Switches the seat heating on the left-hand side on/off ( Y
page 103)
Canada only
Front control panelC
Sets the temperature, left ( Y
page 131)
D
Defrosts the windshield ( Y
page 132)

q
Adjusts the climate mode settings ( Y
page 130)r
Switches air-recirculation mode on/off ( Y
page 133)s
Sets climate control to automatic ( Y
page 130)
Rear control panelt
Increases the airflow ( Y
page 131)u
Sets the temperature ( Y
page 131)v
Sets rear-compartment climate control to automatic ( Y
page 130)w
Directs the airflow through the rear air vents ( Y
page 131)x
Switches the seat heating on the right-hand side on/off ( Y
page 103)y
Directs the airflow through the footwell vents ( Y
page 131)z
Switches the rear climate control on/off ( Y
page 129){
Reduces the airflow ( Y
page 131)|
Switches the seat heating on the left-hand side on/off ( Y
page 103)
Control panel for 3-zone automatic climate control with additional rear-com-
partment climate control
USA only
Front control panel
C
Sets the temperature, left ( Y
page 131)
D
Defrosts the windshield ( Y
page 132)

o
Reduces th e airflow ( Y
page 131)
Switches off climat e controlp
Displayq
Adjusts th e climat e mod e setting s ( Y
page 130)r
Switches air-recirculation mod e on/off ( Y
page 133)s
Sets climat e control to automatic ( Y
page 130)
Rea r control panelt
Increase s th e airflow ( Y
page 131)u
Sets th e temperature ( Y
page 131)v
Sets rear-compartmen t climat e control to automatic ( Y
page 130)w
Directs th e airflow throug h th e rear air vents ( Y
page 131)x
Directs th e airflow throug h th e footwell vents ( Y
page 131)y
Switches th e rear climat e control on/off ( Y
page 129)z
Reduces th e airflow ( Y
page 131)
Canad a only
Front control panelC
Sets th e temperature, lef t ( Y
page 131)D
Defrost s th e windshield ( Y
page 132)