engine MERCEDES-BENZ GLA-Class 2015 X156 Owner's Guide

Useful information
i This 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.
i Read the information on qualified special-
ist workshops (Y page 28). SmartKey
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 shifting the automatic transmission out of
park position P
R Start 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
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident. Do not attach any heavy or large objects to the
SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
! Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
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 SmartKey functions
0043
0037 To lock the vehicle
0044 0054 To open the tailgate
0087 0036 To unlock the vehicle
X To unlock centrally: press button0087.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking: R the vehicle is locked again.
R protection against theft is reactivated.
X To lock centrally: press button0043.
The SmartKey centrally locks/unlocks: R the doors
R the tailgate
R the fuel filler flap 76
SmartKeyOpening and closing

Problem
Possible causes/consequences and
0050
0050Solutions The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 311).
or
X Jump-start the vehicle (Y page 315).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the
SmartKey. The steering lock is mechanically blocked.
X Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions. Doors
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 shifting the automatic transmission out of
park position P
R Start 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. You should preferably place luggage or loads
in the cargo compartment. Observe the load-
ing guidelines (Y page 266). Unlocking and opening doors from
the inside
X
To unlock and open a front door: pull
door handle 0044.
If the door is locked, locking knob 0043pops
up. The door is unlocked and opens.
X To unlock a rear door: pull up locking
knob 0043.
The door is unlocked and can be opened.
X To open a rear door: pull door handle0044. Doors
81Opening and closing Z

Unlocking the driver's door (mechan-
ical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered (Y page 73).
X Take the mechanical key out of the Smart-
Key (Y page 77).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key counter-clockwise
as far as it will go to position 0047.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the Smart-
Key (Y page 77). Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey, use the mechanical key.
X Open the driver's door.
X Close the front-passenger door, the rear
doors and the tailgate.
X Press the locking button (Y page 82).
X Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs by hand, if necessary.
X Close the driver's door. X
Take the mechanical key out of the Smart-
Key (Y page 77).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key clockwise as far as
it will go to position 0047.
X Turn the mechanical key back and remove
it.
X Make sure that the doors and the tailgate
are locked.
X Insert mechanical key into the SmartKey
(Y page 77).
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed. Cargo compartment
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and behind the tailgate. Cargo compartment
83Opening and closing Z

Opening/closing automatically from
outside
Important safety notes G
WARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of the closing area during the closing process.
Use one of the following options to stop the
closing process:
R press the 0054button on the SmartKey.
R press the remote operating switch on the
driver’s door.
R press the close button or STOP button on
the tailgate.
R pull the handle on the tailgate. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and behind the tailgate.
i The opening dimensions of the tailgate
can be found in the "Vehicle data" section
(Y page 368).
Opening the tailgate automatically You can open the tailgate automatically with
the SmartKey or the handle in the tailgate. X
Press the 0054button on the SmartKey
until the tailgate opens.
or X If the tailgate is unlocked, pull the handle
and let it go again immediately.
Closing the tailgate automatically X
To close: press closing button 0044on the
tailgate.
X To stop the closing process: press STOP
button 0043on the tailgate.
or
X Pull the handle in the tailgate.
or
X Press the 0054button on the SmartKey
until the tailgate opens again.
or X Press the remote operating switch in the
driver's door. Opening/closing automatically from
inside
Important safety notes G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning. Cargo compartment
85Opening and closing
Z

Turn off the engine before opening the tail-
gate. Never drive with the tailgate open.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and behind the tailgate.
i The opening dimensions of the tailgate
can be found in the "Vehicle data" section
(Y page 368).
Opening and closing You can open and close the tailgate from the
driver's seat when the vehicle is stationary
and unlocked.
X To open: pull remote operating switch 0043
for the tailgate until the tailgate opens.
X To close: turn the SmartKey to position 1
or 2in the ignition lock.
X Press remote operating switch 0043for the
tailgate until the tailgate is completely
closed.
You will hear a warning tone during the
closing process. Limiting the opening angle of the tail-
gate
Important safety notes You can limit the opening angle of the tail-
gate. This is possible in the top half of its
opening range. This could be useful, for example, if there is
insufficient space above the tailgate.
! Make sure there is sufficient clearance to
open the tailgate fully when setting the
opening angle. The tailgate could otherwise be damaged. Ideally, set the opening angleoutside.
Activating X
To open the tailgate: pull the handle on
the tailgate.
X To stop the opening procedure at the
desired position: press the closing button
(Y page 85) in the tailgate or pull the handle
on the outside of the tailgate again.
X To store the position: press and hold the
closing button in the tailgate until you hear a short tone.
The opening angle limiter is activated. The
tailgate will now stop in the stored positionwhen opening.
i To open the tailgate fully, pull the handle
on the outside of the tailgate again after it
has stopped automatically. This does not
delete the stored position.
Deactivating X
Press and hold the closing button
(Y page 85) in the tailgate until you hear
two short tones. Tailgate emergency release
If the tailgate can no longer be opened from
outside the vehicle, use the emergency
release on the inside of the tailgate.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i The opening dimensions of the tailgate
can be found in the "Vehicle data" section
(Y page 368). 86
Cargo compartmentOpening and closing

0043
Front left
0044 Front right
0087 Rear right
0085 Rear left
i When the override feature for the side
windows is activated (Y page 64), the side
windows cannot be operated from the rear.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X To open manually: press and hold the cor-
responding switch.
X To open fully: press the switch beyond the
point of resistance and release it.
Automatic operation is started.
X To close manually: pull the corresponding
switch and hold it.
X To close fully: pull the switch beyond the
point of resistance and release it.
Automatic operation is started.
X To interrupt automatic operation:
press/pull the corresponding switch again.
i If you press/pull the switch beyond the
point of resistance, automatic operation is
started in the corresponding direction. You
can stop automatic operation by pressing/ pulling the switch again.
i You can continue to operate the side win-
dows after you switch off the engine or
remove the SmartKey. This function is
available for up to five minutes or until the
driver's or front-passenger door is opened. Convenience opening
You can ventilate the vehicle before you start driving. To do this, the SmartKey is used to
carry out the following functions simultane-
ously:
R unlock the vehicle
R open the side windows
R open the panorama roof with power tilt/
sliding panel and the roller sunblinds
i The convenience opening feature can
only be operated using the SmartKey. The
SmartKey must be close to the driver's
door handle.
X Press and hold the 0036button until the
side windows and the panorama sunroof
are in the desired position.
If the roller sunblinds of the panorama roof
with power tilt/sliding panel are closed, the roller sunblinds are opened first.
X Press and hold the 0036button again until
the panorama roof with power tilt/sliding
panel is in the desired position.
X To interrupt convenience opening:
release the 0036button. Convenience closing feature
G
WARNING
When the convenience closing feature is oper- ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
When you lock the vehicle, you can simulta-
neously:
R close the side windows
R close the panorama roof with power tilt/
sliding panel 88
Side windowsOpening and closing

i
If you press/pull the
0057switch beyond
the point of resistance, automatic opera-
tion is started in the corresponding direc-
tion. You can stop automatic operation by
pressing/pulling the switch again.
Automatic operation for raising is available
only when the sliding sunroof is closed.
i You can continue to operate the sliding
sunroof after switching off the engine or
removing the SmartKey from the ignition
lock. This function remains active for five
minutes or until you open a front door.
Rain-closing feature The raised sliding sunroof automatically low-
ers at the rear when driving if it starts to rain.
The sliding sunroof is lowered depending on:
R the road speed and
R the intensity of the rain.
You can manually cancel the automatic clos-
ing procedure. Press or pull the 0057switch
in any direction.
To raise the sliding sunroof again, press the
0057 switch in direction 0043. The rain-closing
feature remains activated. Operating the roller sunblind for the
sliding sunroof
Important safety notes G
WARNING
When opening or closing the roller sunblind,
parts of the body could be trapped between
the roller sunblind and the frame or sliding
sunroof. There is a risk of injury.
When opening or closing make sure that no
parts of the body are in the sweep of the roller sunblind.
If somebody becomes trapped:
R release the switch immediately, or
R during automatic operation, push the
switch briefly in any direction The opening or closing procedure will be stop-
ped.
The roller sunblinds shield the vehicle interior from sunlight. The two roller sunblinds can
only be opened and closed together when the sliding sunroof is closed.
Roller sunblind reversing feature The roller sunblinds are equipped with an
automatic reversing feature. If a solid object
blocks or restricts a roller sunblind during the
automatic closing process, the roller sunblind opens again automatically. However, the
automatic reversing feature is only an aid and
does not relieve you of the responsibility of
paying attention when closing the roller sun-
blinds. G
WARNING
The reversing feature especially does not
react to soft, light and thin objects such as
small fingers. This means that the reversing
feature cannot prevent someone being trap-
ped in these situations. There is a risk of
injury.
When closing make sure that no parts of the
body are in the sweep of the roller sunblind.
If somebody becomes trapped:
R release the switch immediately, or
R during automatic operation, push the
switch briefly in any direction
The closing process is stopped. 92
Panorama roof with power tilt/sliding panelOpening and closing

Useful information
i This 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.
i Read the information on qualified special-
ist workshops (Y page 28). Correct driver's seat position
G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine. Observe the safety guidelines on seat adjust-
ment (Y page 97). X
Make sure that seat 0087is adjusted prop-
erly.
Manual seat adjustment (Y page 98)
Electrical seat adjustment (Y page 98)
When adjusting the seat, make sure that:
R you are as far away from the driver's air
bag as possible.
R you are sitting in a normal upright posi-
tion.
R you can fasten the seat belt properly.
R you have moved the backrest to an
almost vertical position.
R you have set the seat cushion angle so
that your thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is adjus-
ted properly (Y page 98).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by the center of the head restraint.
Observe the safety guidelines on steering
wheel adjustment (Y page 102).
X Make sure that steering wheel 0043is adjus-
ted properly.
Adjusting the steering wheel
(Y page 102)
When adjusting the steering wheel, make
sure that:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the instru-
ment cluster clearly.
Observe the safety guidelines for seat belts
(Y page 44).
X Check whether you have fastened seat
belt 0044properly (Y page 46). 96
Correct driver's seat positionSeats, steering wheel and mirrors

The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip joints
X Before starting off, adjust the rear-view mir-
ror and the exterior mirrors (Y page 103) in
such a way that you have a good view of
road and traffic conditions.
X Vehicles with a memory function: save
the seat and exterior mirror settings
(Y page 106). Seats
Important safety notes
G
WARNING
Children could become trapped if they adjust the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.
The seats can still be adjusted when there is
no SmartKey in the ignition lock. G
WARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion. This could cause you to lose control of the vehicle. There is a risk of an accident.
Always make sure that the driver's seat is
engaged before starting the engine. G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident. Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt
before starting the engine. G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem. G
WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(Y page 48) and "Children in the Vehicle"
(Y page 58).
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools. The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating mate- Seats
97Seats, steering wheel and mirrors Z

rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
! Make sure that there are no objects in the
footwell under or behind the seats when
moving the seats back. There is a risk that
the seats and/or the objects could be dam-
aged.
i Further related subjects:
R cargo compartment enlargement (fold-
ing down the rear seats) (Y page 270)Adjusting the seats manually
Seat fore-and-aft adjustment
X
Lift handle 0043and slide the seat forwards
or backwards.
X Release lever 0043again.
Make sure that you hear the seat engage in
position.
Backrest angle X
Relieve the pressure on the backrest.
X Turn handwheel 0085forwards or backwards.
Seat height X
Pull handle 0087upwards or push it down
repeatedly until the seat has reached the
desired height. Seat cushion angle Adjust the angle so that your thighs are lightly
supported.
X Turn handwheel 0044forwards or backwards. Adjusting the seats electrically
0043
Head restraint height 1
0044 Seat cushion angle
0087 Seat height
0085 Seat fore-and-aft adjustment
0083 Backrest angle
i You can store the seat settings using the
memory function (Y page 106). Adjusting the head restraints
G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine. G
WARNING
If head restraints are not installed and adjus-
ted correctly, they cannot provide protection
1 Not available on vehicles with sports seats. 98
SeatsSeats, steering wheel and mirrors