MERCEDES-BENZ GLS 2017 Owners Manual

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
Directs the airflow through the footwell vents ( Y
page 131)y
Switches the rear climate control on/off ( Y
page 129)z
Reduces the airflow ( Y
page 131)
Optimum use of automatic climate
control
Optimum use of the automatic climate
control The following contains notes and recommenda-
tions on optimum use of the dual-zone or 3-zone
automatic climate 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 climate control: in
automatic mode, you can also use the

Activating/deactivating X
Turn th e SmartKey to position 2 in th e ignition
loc k ( Y
page 138).X
To switch on: press th e X button.
The indicator lamp in th e X butto n lights
up. Airflo w and air distribution are set to auto -
matic mode. X
To deactivate: press th e x button.
The indicator lamp in th e x butto n lights
up. Switching cooling with air dehumidi-
ficati on on/off
Activating/deactivating X
To activate: press th e Z or V button.
The indicator lamp in th e Z or V butto n
lights up. X
To deactivate: press th e Z or V but -
ton.
The indicator lamp in th e Z or V butto n
goe s out . The "Cooling wit h air dehumidifica-
tion " function has a delaye d switch-off fea-
ture.
Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and P Solutions
The indicator lamp in th e
Z or V butto n
flashes three times or
remain s off . The "Cool-
ing wit h air dehumidifi-
cation " function canno t
be switched on . Cooling wit h air dehumidification has been deactivated due to a mal-
function . X
Visit a qualified specialist workshop .
Setting climate cont rol to automatic
Gene ra l notesIn automatic mode, th e set temperature is main -
taine d automatically at a constan t level. The
system automatically regulates th e temperature
of th e dispensed air, th e airflow and th e air dis-
tribution .
The "Cooling wit h air dehumidification " function
is activated automatically in automatic mode.
In th e rear compartment, you can also switch
climat e control for th e rear seat s to automatic
mod e usin g th e X button.
Aut oma tic cont rolX
Turn th e SmartKey to position 2 in th e ignition
loc k ( Y
page 138).X
Se t th e desired temperature.X
To activate: press th e X button.
The indicator lamp in th e X butto n lights
up. Automatic air distribution and airflow are
activated. X
To switch to manua l mode: p res s th e

Setting the temperature
Dual-zone automatic climate control Different temperatures can be set for the driv-
er's and front-passenger sides. X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 138).X
To increase or decrease: turn control C or

i You can use 3-zone automatic climate con-
trol to set the airflow in the rear compartment
separately.
Switching the ZONE function on/off X
To activate: press the

i If you clean the windows regularly, they do
not fog up so quickly.
Rear window defroster
General notes 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.
Switching on/off X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 138). X
Press the l button.
The indicator lamp in the l button lights
up or goes out.
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 vehicle will
then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Switching on/off X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 138).X
To activate: press the

been switched off. The heating time depends on
the set interior temperature.
Switching on/off X
To activate: press the K or V button.
The indicator lamp in the K or V 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 medium speed. X
To deactivate: press the K or V but-
ton.
The indicator lamp in the K or V 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
Ionization Ionization is used to purify the air in the vehicle
interior and attain an improved interior climate.
The ionization of the interior air is odorless and
cannot be perceived directly in the vehicle inte-
rior.
You can switch ionization on and off via the mul-
timedia system (see the separate operating
instructions).
Ionization can only be operated when the auto-
matic climate control is switched on. The side air
vent on the driver's side must be open.
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 out- lets. If necessary, redirect the 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
C
Center air vent, left D
Center air vent, right

Setting the side air vents
Example
C
Side window defroster ventD
Side air vent, left

B-pillar air vent in the headliner
C
B-pillar air ventD
Thumbwheel for B-pillar air vent X
To open or close: turn thumbwheel D up or
down.
Third row of seats
B-pillar air vent in the headliner
C
B-pillar air ventD
Thumbwheel for B-pillar air vent X
To open or close: turn thumbwheel D up or
down.136
Setting the air vents
Climate control

Notes on breaking-in a new vehicle
Important safety notes The sensor system of some driving and driving
safety systems adjusts automatically while a
certain distance is being driven after the vehicle
has been delivered or after repairs. Full system
effectiveness is not reached until the end of this
teach-in procedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several
hundred kilometers of driving. Compensate for
this by applying greater force to the brake pedal.
The first 1000 miles (1500 km) The more you look after the engine when it is
new, the more satisfied you will be with its per-
formance in the future. R
You should therefore drive at varying vehicle
and engine speeds for the first 1000 miles
(1500 km). R
Avoid heavy loads, e.g. driving at full throttle,
during this period. R
Change gear in good time, before the tach-
ometer needle is

! Do not warm up the engine with the vehicle
stationary. Drive off immediately. Avoid high
engine speeds and driving at full throttle until
the engine has reached its operating temper-
ature.
Only shift the automatic transmission to the
desired drive position when the vehicle is sta-
tionary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
! Mercedes-AMG vehicles: at low engine oil
temperatures below 68 ‡ (+20 †), the max-
imum engine speed is restricted in order to
protect the engine. To protect the engine and
maintain smooth engine operation, avoid driv-
ing at full throttle when the engine is cold.
SmartKey positions
SmartKey
Z
To remove the SmartKeyG
Power supply for some consumers, such as
the windshield wipersH
Ignition (power supply for all consumers)
and drive position
I
To start the engine
i The SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
KEYLESS-GO
General notes
Vehicles with KEYLESS-GO are equipped with a
SmartKey featuring an integrated KEYLESS-GO
function and a detachable Start/Stop button. A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
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 75).
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 303).
Otherwise, the KEYLESS-GO key will not be rec-
ognized.
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 button
on the front door ( Y
page 80), you can continue
to start the engine with the Start/Stop button.
The engine can be switched off while the vehicle
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 function.138
Driving
Driving and parking