2015 MERCEDES-BENZ GLK-CLASS SUV Owners Manual

Problems with the rear window defroster
ProblemPossible causes/consequences and M 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.
Activating/deactivating air-recircula-
tion mode
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.
Switching on/off
X Turn the SmartKey to position 2 in the igni-
tion lock ( Y page 149).
X To activate: press the g button.
The indicator lamp in the g button lights
up.
iIn the event of high pollution levels 10
or at
high outside temperatures, air-recircula-
tion mode is automatically activated. When
air-recirculation mode is activated auto-
matically, the indicator lamp in the g
button is not lit.
Outside air is added after about
30 minutes.
X To deactivate: press the g button.
The indicator lamp in the g button goes
out.
iAir-recirculation mode deactivates auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
41 ‡ (5 †)
R after approximately five minutes if cool-
ing with air dehumidification is deactiva-
ted
R after approximately 30 minutes at out-
side temperatures above approximately
41 ‡ (5 †) if the "Cooling with air dehu-
midification" function is activated
Activating/deactivating the residual
heat function
General notes
The residual heat function is only available in vehicles for Canada with 3-zone automatic
climate control.
It is possible to make use of the residual heat
of the engine to continue heating the vehicle
for approximately 30 minutes after the engine
has been switched off. The heating time
depends on the set interior temperature.
iThe blower will run at a low speed regard-
less of the airflow setting.
iIf you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
10 3-zone automatic climate control only.
Operating the climate control systems143
Climate control

Switching on/off
XTurn the key to position 0 in the ignition
lock ( Y page 149) or remove it.
X To activate: press the Ì button.
The indicator lamp in the Ì button lights
up.
iIf the residual heat function is activated,
the windows may fog up on the inside.
X To deactivate: press the Ì button.
The indicator lamp in the Ì button goes
out.
iResidual heat is deactivated automati-
cally:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
Setting the air vents
Important safety notes
GWARNING
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 between the windshield
and the hood free of blockages, such as ice,
snow or leaves.
R never cover the air vents or air intake grilles
in the vehicle interior.
iFor virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position.
Setting the center air vents
X To open the center air vents: turn the
adjuster in one of center air vents : to the
left.
X To close the center air vents: turn the
adjuster in one of center air vents : to the
right until it engages.
Setting the side air vents
:Side window defroster vent
;Side air vent
X To open a side air vent: turn the adjuster
in the side air vent ; to the left.
X To close a side air vent: turn the adjuster
in the side air vent ; to the right until it
engages.
Setting the glove box air vent
When automatic climate control is activated,
the glove box can be ventilated, for instance
to cool its contents. The level of airflow
144Setting the air vents
Climate control

depends on the airflow and air distribution
settings.
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu-
midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
box could be damaged.
:Air vent thumbwheel
;Air vent
X To open/close: turn thumbwheel : to the
left or right.
Setting the rear-compartment air
vents
:Rear-compartment air vent thumbwheel
;Rear-compartment air vent, right
=Rear control panel, only for Canada with
3-zone automatic climate control
?Rear-compartment air vent, left X
To open/close: turn thumbwheel : up or
down.
Setting the air vents145
Climate control
Z

146

Useful information............................148
Notes on breaking-in a new vehi-
cle ................................................... ....148
Driving ............................................... 148
Automatic transmission ...................156
Refueling ............................................ 162
Parking ............................................... 168
Driving tips ........................................ 169
Driving systems ................................ 175
Towing a trailer ................................. 212
147
Driving and parking

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Y page 27).
Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and driv-
ing 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 proce-
dure.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate 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
performance in the future.
R You should therefore drive at varying vehi-
cle and engine speeds for the first
1000 miles (1500 km).
R Ideally, for the first 1000 miles (1500 km),
drive in program E.
R Avoid heavy loads, e.g. driving at full throt-
tle, during this period. R
Change gear in good time, before the tach-
ometer needle is Ô of the way to the red
area of the tachometer.
R Do not manually shift to a lower gear to
brake the vehicle.
R Try to avoid depressing the accelerator
pedal beyond the point of resistance (kick-
down).
After 1000 miles (1500 km), you can increase
the engine speed gradually and accelerate
the vehicle to full speed.
iYou should also observe these notes on
breaking in if the engine or parts of the drive train on your vehicle have been replaced.
iAlways observe the respective speed lim-
its.
Driving
Important safety notes
GWARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
148Driving
Driving and parking

GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Do not warm up the engine with the vehi-
cle stationary. Drive off immediately. Avoid high engine speeds and driving at full throt-
tle until the engine has reached its operat-
ing temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train.
Key positions
SmartKey
gTo remove the SmartKey
(shift the transmission to position P)
1Power supply for some consumers, such
as the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
The steering is locked when you remove the
SmartKey from the ignition lock.
iThe SmartKey can be turned in the igni-
tion lock even if it is not the correct Smart-
Key for the vehicle. The ignition is not
switched on. The engine cannot be started.
KEYLESS-GO
General notes
R Do not keep the KEYLESS-GO key:
- with electronic devices, e.g. a mobile
phone or another SmartKey
- with metallic objects, e.g. coins or metal
foil
- inside metallic objects, e.g. a metal case
This can impair the functionality of the KEY- LESS-GO key.
Vehicles with KEYLESS-GO are equipped with
a SmartKey featuring an integrated KEYLESS- GO function and a detachable Start/Stop but-
ton.
Driving149
Driving and parking
Z

The Start/Stop button must be inserted in theignition lock and the SmartKey must be in the
vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
SmartKey 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.
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
iYou 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 vehicle. The vehicle can be star-
ted with the Start/Stop button if the Smart-
Key is in the vehicle. Electrically powered
equipment can be operated.
:Start/Stop button
;Ignition lock
X Insert Start/Stop button : into ignition
lock ;.
iWhen you insert Start/Stop button :
into ignition lock ;, the system needs
approximately 2 seconds recognition time.
You can then use Start/Stop button :.
Start/Stop button =
USA only
?Canada only
If Start/Stop button : has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
X To switch on the power supply: press
Start/Stop button : once.
You can now activate the windshield wip-
ers, for example.
iIf you then open the driver's door when in
this position, the power supply is deactiva-
ted.
X To switch on the ignition: press Start/
Stop button : twice.
iThe power supply is switched off again if:
R the driver's door is opened and
R you press Start/Stop button : once
when in this position.
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light up. If an indicator lamp does not go out afterstarting the engine or lights up while driving,
see ( Y page 262).
150Driving
Driving and parking