key MERCEDES-BENZ GLK-CLASS SUV 2013 Repair Manual

Problems with the rear window defroster
Problem Possible causes/consequences and
0050 SolutionsThe rear window
defroster has
deactivated
prematurely or cannot
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-
recirculation mode
If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
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.
The operation of air-recirculation mode
is the
same for all control panels.
X Turn the SmartKey to position 2 in the
ignition lock (Y page 141).
X To activate: press the 0072 button.
The indicator lamp
in the
0072

button lights
up.
i In the event of high
pollution levels12
or at
high outside temperatures, air-
recirculation mode is automatically
activated. When air-recirculation mode is
activated automatically, the indicator lamp
in the 0072 button is not lit.
Outside air is added after about
30 minutes.
X To deactivate: press the 0072 button.
The indicator lamp in the 0072

button goes
out. i
Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡(5

†) if the "Cooling
with air dehumidification" function is
activated Activating/deactivating the residual
heat function
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 temperature that has been
set.
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.
12 3-zone automatic climate control only.136
Operating the climate control systems
Climate control

X
Turn the SmartKey to position 0 in the
ignition lock (Y page 141) or remove it.
X To activate: press the 004B button.
The indicator lamp in the 004B
button lights
up.
i If the residual heat function is activated,
the windows may fog up on the inside.
X To deactivate: press the 004B button.
The indicator lamp in the 004B

button goes
out.
i Residual heat is deactivated
automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is activated 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
outlets. 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.
i For 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 vent: turn the
adjuster in one of center air vents 0043
counter-clockwise.
X To close the center air vent: turn the
adjuster in one of center air vents 0043
clockwise until it engages. Setting the side air vents
0043
Side window defroster vent
0044 Side air vent
X To open a side air vent: turn the adjuster
in side air vent 0044 counter-clockwise.
X To close a side air vent: turn the adjuster
in side air vent 0044

clockwise until it
engages. Setting the glove box air vent
When automatic climate control is activated,
the glove box can be ventilated, for instance Setting the air vents
137
Climate control Z

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. G
WARNING
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.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating 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 005A
To remove the SmartKey
(shift the transmission to position P)
0047 Power supply for some consumers, such
as the windshield wipers 0048
Ignition (power supply for all consumers)
and drive position
0049 To start the engine
The steering is locked when you remove the
SmartKey from the ignition lock.
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
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
KEYLESS-GO key.
Vehicles with KEYLESS-GO are equipped with
a SmartKey featuring an integrated KEYLESS-
GO function and a detachable Start/Stop
button.
The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
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
immediately.
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
i You 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 Driving
141
Driving and parking Z

started with the Start/Stop button if the
SmartKey is in the vehicle. Electrically
powered equipment can be operated.
0043
Start/Stop button
0044 Ignition lock
X Insert Start/Stop button 0043 into ignition
lock 0044.
i When you insert Start/Stop button 0043
into ignition lock 0044, the system needs
approximately 2 seconds recognition
time.
You can then use Start/Stop button 0043
.Start/Stop button
0087
USA only
0085 Canada only
X Position 0: if Start/Stop button
0043 has not
yet been pressed, this corresponds to the
key being removed from the ignition.
X Position

1: press Start/Stop button 0043.
You can now activate the windshield
wipers, for example. i
If you then open the

driver's door when in
this position, the power supply is
deactivated.
X Position 2: (ignition): press Start/Stop
button 0043 twice.
i The power supply is switched off again if:
R the driver's door is opened and
R you press Start/Stop button 0043 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 after
starting the engine or lights up while driving,
see ( Y page 259). Starting the engine
Important safety notes G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R starting the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock

the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to

poisoning. There142
Driving
Driving and parking

is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with
the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
! Do not depress the accelerator pedal
when starting the engine.
General notes i
Vehicles with a gasoline engine: the
catalytic converter is preheated for up to
30 seconds after a cold

start. The sound of
the engine may change during this time.
Automatic transmission X
Shift the transmission to position P.
The transmission position display in the
multifunction display shows P.
i You can also start the engine when the
transmission is in position N.
Starting procedure with the SmartKey i
To start the engine using the SmartKey
instead of KEYLESS-GO, pull the Start/
Stop button out of the ignition lock.
X To start a gasoline engine: turn the
SmartKey to position 3 in the ignition lock (Y page 141) and release it as soon as the
engine is running.
X To start a diesel engine: turn the
SmartKey to position 2 in the ignition lock
(Y page 141).
The 0028 preglow indicator lamp in the
instrument cluster lights up.
X When the 0028 preglow indicator lamp
goes out, turn the SmartKey to position
3(Y page 141) and release

it as soon as the
engine is running.
i You can start the engine

without preglow
if the engine is warm.
Using KEYLESS-GO to start the engine You can start the engine if a valid SmartKey
with the integrated KEYLESS-GO function is
in the vehicle. Always take

the SmartKey with
you when leaving the vehicle, even if you only
leave it for a short time. Pay attention to the
important safety notes.
i The Start/Stop button can be used to
start the vehicle without inserting the
SmartKey into the ignition lock. The Start/
Stop button must be inserted in the ignition
lock and the SmartKey must be in the
vehicle.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 141).
The engine starts. Pulling away
Automatic transmission G
WARNING
If the engine speed is above the idling speed
and you engage transmission position D or
R, the vehicle could pull

away suddenly. There
is a risk of an accident. Driving
143
Driving and parking
Z

Every time you switch on the engine using the
SmartKey or the Start/Stop button, the ECO
start/stop function is activated.
If the ECO start/stop function has been
manually deactivated (
Y page 146) or a
malfunction has caused the system to be
deactivated, the 00A7 symbol is not
displayed.
Automatic engine switch-off General notes
The ECO start/stop function is operational
and the
00A7 symbol is displayed in green in
the multifunction display, if:
R the indicator lamp in the ECO button is lit
green.
R the outside temperature is within the
comfort range.
R the engine is at normal operating
temperature.
R the set temperature for the
vehicle interior
has been reached.
R the battery is sufficiently charged.
R the system detects that the windshield is
not fogged up when the air-conditioning
system is switched on.
R the hood is closed.
R the driver's door is closed and the driver's
seat belt is fastened.
If not all conditions for automatic engine
switch-off are fulfilled, the 00A7 symbol is
shown in yellow.
i All of the vehicle's systems remain active
when the engine has been stopped
automatically.
i The engine can be switched off
automatically a maximum of four times
(first stop and three subsequent stops) in
succession. The 00A7 symbol is shown in
yellow in the multifunction display after the
engine has been started automatically for
the fourth time. When the 00A7 symbol is
shown in green in the multifunction display, automatic engine switch-off is again
possible.
Vehicles with automatic transmission
If the vehicle is braked to a standstill in D or
N, the ECO start/stop function switches off
the engine automatically.
i The HOLD function can be

activated if the
engine has been switched off
automatically. It is then not necessary to
continue applying the brakes during the
automatic stop phase. When you depress
the accelerator pedal, the engine starts
automatically and the braking effect of the
HOLD function is deactivated.
Automatic engine start General notes
The engine starts automatically if:
R
you switch off the ECO

start/stop function
by pressing the ECO button.
R you engage reverse gear R.
R the vehicle starts to roll.
R the brake system requires this.
R the temperature in the vehicle interior
deviates from the set range.
R the system detects moisture on the
windshield when the air-conditioning
system is switched on.
R the condition of charge of the battery is too
low.
R the driver's seat belt is removed or the
driver's door is opened.
Vehicles with automatic transmission
The engine is started automatically if you:
R release the brake pedal when HOLD is not
activated and the transmission is in
position D or N.
R depress the accelerator pedal.
R move the transmission out of position P.
i Shifting the transmission to position P
does not start the engine. Driving
145
Driving and parking Z

Problems with the engine
Problem Possible causes/consequences and
0050 SolutionsThe engine does not
start.
The starter
motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Turn the SmartKey back to position 0
in the
ignition lock
before
attempting to start the engine again.
or
X Press the Start/Stop button repeatedly until all indicator lamps
in the instrument cluster go out.
X Try to start the engine again (Y page 142). Avoid excessively
long and frequent attempts to

start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 318).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. Driving
147
Driving and parking Z

Transmission position and drive
program display
0043
Transmission position display
0044 Drive program display
i The arrows in the transmission position
display show how and into which
transmission positions you can change
using the DIRECT SELECT lever.
! If the transmission position
display
in the
multifunction display is not working, you
should pull away carefully to check whether
the desired transmission position is
engaged. Ideally, you should select
transmission position D and drive program
E or S. Do not restrict the shift range.
The current transmission position and drive
program appear in the multifunction display.
Engaging park position P X
Push the DIRECT SELECT lever in the
direction of arrow P.
i The automatic transmission shifts into
park position P automatically:
R if you open the driver's door while the
vehicle is stationary in transmission
position D or R
R if you open the door while traveling at
very low speeds in transmission

position
D or R
! If the engine speed is too high or the
vehicle is moving, do not shift the
automatic transmission directly from D to R, from R to D or directly to P. The
automatic
transmission could otherwise be
damaged.
Engaging park position P automatically Park position P is automatically engaged if:
R
you switch off the engine using the
SmartKey and remove the SmartKey
R you switch off the engine using the Start/
Stop button and open one

of the front doors
R the HOLD (Y page 179) or DISTRONIC
PLUS (Y page 171) function brake your
vehicle until it is stationary and at least one
of the following conditions is fulfilled:
-there is a system malfunction.
- the vehicle is on a steep uphill or downhill
gradient. The electric parking brake is
then also applied.
Engaging reverse gear R !
Only shift the automatic transmission to
R when the vehicle is stationary.
X When the vehicle is stationary, depress the
brake pedal.
X Push the DIRECT SELECT lever up past the
first point of resistance.
Shifting to neutral N X
When the vehicle is stationary, depress the
brake pedal.
X Push the DIRECT SELECT lever up or down
to the first point of resistance.
If the engine has been switched off, the
automatic transmission automatically shifts
to N.
Remaining in neutral N
If the automatic transmission is to remain in
neutral N, e.g. for washing the vehicle in car
washes with a
towing device,

please observe
the following instructions: Automatic transmission
149
Driving and parking Z

G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R starting the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock
the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
Using the SmartKey:
R Make sure that the ignition is switched on.
R When the vehicle is stationary, depress the
brake pedal and keep it depressed.
R Shift to neutral N.
R Release the brake pedal.
R if the electric parking brake is applied,
release it.
R Switch off the ignition and leave the
SmartKey in the ignition lock.
Using KEYLESS-GO:
R Make sure that the ignition is switched on.
R When the vehicle is stationary, depress the
brake pedal and keep it depressed.
R Engage park position P.
R Release the brake pedal.
R Remove the Start/Stop button from the
ignition lock.
R Insert the SmartKey into the ignition lock.
R Switch on the ignition.
R Depress the brake pedal and keep it
depressed. R
Shift to neutral N.
R Release the brake pedal.
R if the electric parking brake is applied,
release it.
R Switch off the ignition and leave the
SmartKey in the ignition lock.
Engaging drive position D X
When the vehicle is stationary, depress the
brake pedal.
X Push the DIRECT SELECT lever down past
the first point of resistance. Transmission positions
0045
Park position
Do not shift the transmission into
position P(Y page 160) unless the
vehicle is stationary. The parking
lock should not be
used

as a brake
when parking. Always apply the
parking brake in addition to the
parking lock in order to secure the
vehicle.
If the vehicle electronics are
malfunctioning, the transmission
may be locked in position P. Have
the vehicle electronics checked
immediately at a qualified
specialist workshop.
The automatic transmission shifts
to P automatically if you:
R remove the SmartKey
R switch off the engine when in R
or D and open one of the front
doors 0046
Reverse gear
Only shift the transmission to
R
when the vehicle is stationary. 150
Automatic transmission
Driving and parking

Problems with the transmission
Problem Possible causes/consequences and
0050 SolutionsThe transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at a qualified specialist
workshop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into second
gear and reverse gear.
X Stop the vehicle.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position D or R.
If D
is selected, the transmission
shifts into second gear; if R is
selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist
workshop immediately. Transfer case
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always
transmitted to both axles.
! Performance tests may only be carried
out on a 2-axle dynamometer. The brake
system or transfer case could

otherwise be
damaged. Contact a qualified specialist
workshop for a performance test.
! To prevent ESP ®
from intervening, the
ignition must be switched off (SmartKey in
position 0 or 1) if:
R the parking brake is being tested on a
brake dynamometer.
R the vehicle is being towed with only one
axle raised (not permitted for vehicles
with 4MATIC).
The brake system could otherwise be
damaged.
! Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised,
as doing so will damage the transmission. Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable,
the auxiliary

heating before
refueling. G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make
sure that

fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children. 154
Refueling
Driving and parking