2017 MERCEDES-BENZ GLA SUV heating

Problem
Possible causes/consequences and
M
MSolutions There is a fault with KEYLESS-GO.
X Lock or unlock the vehicle using the remote control function of the
key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle cannot be locked or unlocked even using the remote
control function: X Unlock (Y page 88) or lock (Y page 88) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. The engine cannot be
started using the key. 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 324).
or
X Jump-start the vehicle (Y page 325).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The key is in
the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The key battery is weak or discharged.
X Check the key battery (Y page 82) and replace if necessary
(Y page 82).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. You have lost a key. X
Have the key deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Key
85Opening and closing Z

G
WARNING
If the driver's seat is not correctly engaged, it could unexpectedly move while driving. This
could cause you to lose control of the vehicle. There is a risk of an accident.
Always ensure that the driver's seat is
engaged before starting the vehicle. G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, 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 mirrors 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.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If liquid
is spilled on the seats, dry them as soon aspossible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing 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 passen-
gers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating materi-
als, e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
! Make sure that there are no objects in the
footwell under or behind the seats when mov-
ing the seats back. There is a risk that the
seats and/or the objects could be damaged.
i Further related subjects:
R Luggage compartment enlargement (fold-
ing down the rear seats) (Y page 291) Adjusting the seats manually
Vehicles without the seating comfort
package Seat fore-and-aft adjustment:
X
Lift handle :and slide the seat forwards or
backwards.
X Release lever :again.
Ensure that the seat engages audibly.
Backrest angle:
X Relieve the pressure on the backrest.
X Turn handwheel =forwards or backwards.
Seat height: X Pull handle ;upwards or push it down
repeatedly until the seat has reached the
desired height. Seats
107Seats, steering wheel and mirrors Z

X
Fold the seat backrest slightly forwards in
order to remove the head restraint
(Y page 292).
X To remove: pull the head restraint up to the
stop.
X Press release button :and pull the head
restraint out of the guides.
X To refit: insert the head restraint so that the
notches on the bar are on the left when
viewed in the direction of travel.
X Push the head restraint down until you hear it
engage in position. Adjusting the 4-way lumbar support
You can adjust the contour of the front seat
backrests individually to provide optimum sup-
port for your back. :
Raises the backrest contour
; Softens the backrest contour
= Lowers the backrest contour
? Hardens the backrest contour AMG Performance Seat
Vehicles with electrically adjustable seats:
to adjust the contour of the seat and for
improved lateral support, you can individually
adjust the front seats. Adjusting the side bolsters of the seat cush-
ion
X To set the side bolsters of the seat cush-
ion narrower:
press button:.
X To set the side bolsters of the seat cush-
ion wider:
press button ;.
Adjusting the side bolsters of the seat back-
rest
X To set the side bolsters of the seat back-
rest narrower: press button=.
X To set the side bolsters of the seat back-
rest wider:
press button ?. Switching the seat heating on/off
Switching on/off G
WARNING
If you repeatedly switch on seat heating, the
seat cushion and backrest padding may
become very hot. The health of vehicle occu-
pants with limited temperature sensitivity or a limited ability to react to high temperatures
may be affected or they may even suffer burn-
like injuries. There is a risk of injury.
Therefore, do not switch on the seat heating
repeatedly. 110
SeatsSeats, steering wheel and mirrors

The three red indicator lamps in the button indi-
cate the heating level you have selected.
The system automatically switches down from
level 3to level 2after approximately eight
minutes. The system automatically switches down from
level 2to level 1after approximately ten
minutes.
The system automatically switches off approx-
imately 20 minutes after it is set to level 1.
X Turn the key to position 1or2 in the igni-
tion lock (Y page 144).
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the vehicle battery voltage is too low, the
seat heating may switch off.
Problems with the seat heating Problem
Possible causes/consequences and
M MSolutions The seat heating has
switched off prematurely
or cannot be switched
on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat heating will switch
back on automatically. Steering wheel
Important safety notes
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, 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 mirrors and fasten your seat
belt before starting the engine. G
WARNING
Children could become trapped by the steer-
ing wheel if they adjust it. There is a risk of
injury. When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle. Adjusting the steering wheel
G
WARNING
The steering wheel may move unexpectedly if you adjust it while driving. This could cause
you to lose control of the vehicle. There is a
risk of an accident.
Make sure that the steering wheel is locked
before driving off. Never unlock the steering
wheel when the vehicle is in motion. Steering wheel
111Seats, steering wheel and mirrors Z

mirror using button
=as long as the indicator
lamp is lit.
X Press button =up, down, or to the right or
left until you have adjusted the exterior mirror
to the correct position. You should have a
good overview of traffic conditions.
The convex exterior mirrors provide a larger field of vision.
After the engine has been started, the exterior
mirrors are automatically heated at low outside
temperatures. Heating takes a maximum of ten
minutes.
i The exterior mirrors can also be heated
manually by switching on the rear window
heating.
Folding the exterior mirrors in/out elec- trically X
Turn the key to position 1or2 in the igni-
tion lock (Y page 144).
X Briefly press button :.
Both exterior mirrors fold in or out.
i Make sure that the exterior mirrors are
always folded out fully while driving. Other-
wise, they could vibrate.
i If you are driving faster than 47 km/h, you
can no longer fold in the exterior mirrors.
Resetting the exterior mirrors If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must be
reset. The exterior mirrors will otherwise not
fold in when you select the "Fold in mirrors when locking" function in the on-board computer
(Y page 231). X
Turn the key to position 1in the ignition lock
(Y page 144).
X Briefly press button :.
Folding the exterior mirrors in/out
automatically If the "Fold in mirrors when locking" function is
activated in the on-board computer
(Y page 231):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the outside
R the exterior mirrors fold out again automati-
cally as soon as you unlock the vehicle and
then open the driver's or front-passenger
door
i If the exterior mirrors have been folded in
manually, they do not fold out.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position (forwards or backwards), proceed as
follows:
X Vehicles without electrically folding exte-
rior mirrors: manually move the exterior mir-
ror into the correct position.
X Vehicles with electrically folding exterior
mirrors: press and hold mirror-folding button
(Y page 113) until you hear a click and the
mirror engages audibly into position.
The mirror housing is engaged again and you
can adjust the exterior mirrors as usual
(Y page 112). Automatic anti-dazzle mirrors
G
WARNING
Electrolyte may escape if the glass in an auto- matic anti-dazzle mirror breaks. The electro-
lyte is harmful and causes irritation. It must
not come into contact with your skin, eyes,
respiratory organs or clothing or be swal-
lowed. There is a risk of injury. Mirrors
113Seats, steering wheel and mirrors
Z

Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. Otherwise, the windows could
mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R activate air-recirculation mode only briefly
R activate the "Cooling with air dehumidifica-
tion" function
R activate the "Windscreen demisting" function
briefly, if required
The air-conditioning system or THERMOTRONIC automatic climate control regulates the temper-ature and the humidity of the vehicle interior andfilters undesirable substances from the air.
The air-conditioning system or THERMOTRONIC automatic climate control can only be operatedwhen the engine is running. Optimum operation
is only achieved with the side windows and pan- orama sliding sunroof closed.
The "Residual heat" function can only be
switched on or off if the ignition is switched off
(Y page 137).
Always keep the ventilation flaps behind the
side panelling clear (Y page 122). Otherwise the
vehicle will not be ventilated correctly.
i Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature (Y page 98). This will speed up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. With THERMOTRONIC automatic
climate control, gaseous pollutants and
odours will also be reduced. 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 Service Book-
let. As this depends on environmental condi-
tions, e.g. heavy air pollution, the interval may be shorter than stated in the Service Booklet.
i Vehicles with auxiliary heating:
Under
certain environmental conditions, the resid-
ual heat function may be activated automati-
cally an hour after the ignition key has been
removed in order to dry the automatic climate control. The blue LED on the rocker switch in
the centre console lights up when the active
function to dry the automatic climate control is on. The vehicle is then ventilated for
30 minutes.
Vehicles without auxiliary heating: Under
certain environmental conditions, the resid-
ual heat function may be activated automati-
cally an hour after the ignition key has been
removed in order to dry the automatic climate control. The vehicle is then ventilated for
30 minutes. 128
Overview of climate control systemsClimate control

Control panel for air-conditioning system
:
To set the temperature (Y page 133)
; To demist the windscreen (Y page 134)
= To set the air distribution (Y page 133)
? To activate/deactivate air-recirculation mode (Y page 135)
A To set the airflow (Y page 134)
B To activate/deactivate cooling with air dehumidification (Y page 132)
C To switch the rear window heating on/off (Y page 135)Notes on using the air-conditioning
system
Air-conditioning system Below, you can find a number of tips and rec-
ommendations for optimum use of the air-con-
ditioning system.
R Switch on the air-conditioning system by turn-
ing control knob Aclockwise to the desired
position (except position 0).
R Set the temperature to 22 †.
R Recommendation for avoiding misted
windows at low exterior temperatures or
in rain: switch on the ¿cooling with dehu-
midification function (Y page 132).
Set air distribution to ¯and if possible
switch off PandO( Ypage 133).
Deactivate air-recirculation mode e
(Y page 135).
Set airflow control Ato a setting between 3
and 6(Y page 134). R
Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control Ato a setting between 3and
6 (Y page 134).
R Recommendation for a constant vehicle
interior temperature: set airflow controlA
to a setting between 1and 3(Y page 134).
R Recommendation for air distribution in
winter: select the Oand¯ settings
(Y page 133).
Recommendation for air distribution in
summer: select the PorP and¯
settings (Y page 133).
R Use the "Windscreen demisting" function only
briefly until the windscreen is clear again.
R Use the "Air-recirculation mode" function only
briefly, e.g. if there are unpleasant outside
odours or when in a tunnel. The windows
could otherwise mist up as no fresh air is
drawn into the vehicle in air-recirculation
mode.
R If you change the settings of the climate con-
trol system, the climate status display Overview of climate control systems
129Climate control

appears for approximately three seconds at
the bottom of the screen in the multimedia
system display; see separate operating
instructions. You will see the current settings
of the various climate control functions.
DYNAMIC SELECT button (except
Mercedes-AMG vehicles) You can choose between various drive programs
with the DYNAMIC SELECT button
(Y page 151).
If you have selected drive program E:
R when heating, the electrical heater booster is
deactivated and in the warming-up phase
heat output is reduced
R the rear window heating running time is
reduced Depending on the configuration, the climate set-
tings can also be influenced in drive program I.
If you have selected drive program Cor S, the
climate settings are not affected.
ECO start/stop function During automatic engine stop, the climate con-
trol operates only at a reduced capacity. If you
require the full climate control output, you can
switch off the ECO start/stop function by press-
ing the ECO button (Y page 149).Control panel for THERMOTRONIC automatic climate control (2-zone)
:
To set the temperature, left (Y page 133)
; To set climate control to automatic mode (Y page 132)
= To demist the windscreen (Y page 134)
? To increase the airflow (Y page 134)
A To set the air distribution (Y page 133)
B Display
C To activate/deactivate air-recirculation mode (Y page 135)
D To switch the climate control on/off (Y page 131)
E To set the temperature, right (Y page 133)
F To switch the residual heat on/off (Y page 137)
G To activate/deactivate cooling with air dehumidification (Y page 132)
H To reduce the airflow (Y page 134)130
Overview of climate control systemsClimate control