2015 MERCEDES-BENZ A-CLASS HATCHBACK climate control

Cockpit
Function Page
:
Steering wheel gearshift
paddles
177
;
Combination switch 122
=
Instrument cluster 30
?
Horn
A
DIRECT SELECT lever 169
B
PARKTRONIC warning dis-
play
209
C
Overhead control panel 38 Function Page
D
Climate control systems 136
E
Ignition lock 157
F
Adjusts the steering wheel 112
G
Cruise control lever 192
H
Electric parking brake 185
I
Light switch 120
J
Diagnostics connection 24
K
Opens the bonnet 32328
CockpitAt a glance

Function Page
:
Overhead control panel 38
;
PARKTRONIC warning dis-
play 209
=
Combination switch 122
?
Instrument cluster 30
A
Horn
B
DIRECT SELECT lever 169
C
Steering wheel gearshift
paddles
177 Function Page
D
Light switch 120
E
Opens the bonnet 323
F
Diagnostics connection 24
G
Electric parking brake 185
H
Ignition lock 157
I
Adjusts the steering wheel 112
J
Cruise control lever 192
K
Climate control systems 136Cockpit
29At a glance

Useful information
............................136
Overview of climate control sys-
tems ................................................... 136
Operating the climate control sys-
tem ..................................................... 140
Air vents ............................................ 153 135Climate control

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Overview of climate control systems
General notes
Observe the settings recommended on the
following pages. The windows could other-
wise 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/
THERMOTRONIC automatic climate control
regulates the temperature and the humidity
of the vehicle interior and filters undesirable
substances from the air.
The air-conditioning system/
THERMOTRONIC automatic climate control
can only be operated when the engine is run-
ning. Optimum operation is only achieved
with the side windows and panorama sliding
sunroof closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 147).
Always keep the ventilation flaps behind the
side panelling clear (Y page 128). Otherwise
the vehicle will not be ventilated correctly. i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 95). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. With THERMOTRONIC auto- matic 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 Booklet. As this depends on envi-
ronmental conditions, e.g. heavy air pollu-
tion, the interval may be shorter than statedin the Service Booklet.
i Vehicles with auxiliary heating:
under
certain environmental conditions, the
residual heat function may be activated
automatically an hour after the key has
been removed in order to dry the automatic climate control. When the automatic cli-
mate control drying function is active, the
blue LED lamp is lit in the rocker switch in
the centre console. The vehicle is then ven-
tilated for 30 minutes.
Vehicles without auxiliary heating:
under certain environmental conditions,
the residual heat function may be activated automatically an hour after the key has
been removed in order to dry the automatic
climate control. The vehicle is then ventila-
ted for 30 minutes. 136
Overview of climate control systemsClimate control

Control panel for air-conditioning system
:
To set the temperature (Y page 142)
; To demist the windscreen (Y page 144)
= To set the air distribution (Y page 143)
? To activate/deactivate air-recirculation mode (Y page 146)
A To set the airflow (Y page 143)
B To activate/deactivate cooling with air dehumidification (Y page 141)
C To switch the rear window heating on/off (Y page 145)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-
conditioning system.
R Switch on the air-conditioning system by
turning 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
dehumidification function (Y page 141).
Set air distribution to ¯and if possible
switch off PandO (Ypage 143).
Deactivate air-recirculation mode e
(Y page 146). Set airflow control
Ato a setting between
3 and 6(Y page 143).
R Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control Ato a setting between 3
and 6(Y page 143).
R Recommendation for a constant vehi-
cle interior temperature: set airflow con-
trol Ato a setting between 1and 3
(Y page 143).
R Recommendation for air distribution in
winter: select the Oand¯ settings
(Y page 143).
Recommendation for air distribution in
summer: select the PorP and
¯ settings (Y page 143).
R Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again. Overview of climate control systems
137Climate control

R
Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or
when in a tunnel. The windows could oth-
erwise mist up as no fresh air is drawn into
the vehicle in air-recirculation mode.
R If you change the settings of the climate
control system, the climate status display
appears for approximately three seconds
at the bottom of the screen in the Audio/
COMAND display (see separate operating
instructions). You will see the current set-
tings of the various climate control func-
tions.
DYNAMIC SELECT button (except
Mercedes-AMG vehicles) You can choose between various drive pro-
grams with the DYNAMIC SELECT button
(Y page 166).
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
settings can also be influenced in drive pro-
gram I.
If you have selected drive program Cor S, the
climate settings are not affected.
ECO start/stop function During automatic engine switch-off, the cli-
mate control only operates at a reduced capa-
city. If you require the full climate control out-
put, you can switch off the ECO start/stop
function by pressing the ECO button
(Y page 163). 138
Overview of climate control systemsClimate control

Control panel for THERMOTRONIC automatic climate control (2-zone)
:
To set the temperature, left (Y page 142)
; To set climate control to automatic mode (Y page 142)
= To demist the windscreen (Y page 144)
? To increase the airflow (Y page 143)
A To set the air distribution (Y page 143)
B Display
C To activate/deactivate air-recirculation mode (Y page 146)
D To switch climate control on/off (Y page 140)
E To set the temperature, right (Y page 142)
F To activate/deactivate the residual heat function (Y page 147)
G To activate/deactivate cooling with air dehumidification (Y page 141)
H To reduce the airflow (Y page 143)
I To switch the rear window heating on/off (Y page 145)
J To switch the ZONE function on/off (Y page 143)Information on using THERMOTRONIC
automatic climate control
Automatic climate control The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps in the
à and¿ buttons light up.
R Set the temperature to 22 †. R
Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or
when in a tunnel. The windows could oth-
erwise mist up as no fresh air is drawn into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side as well. The indi-
cator lamp in the ábutton goes out. Overview of climate control systems
139Climate control

R
Use the residual heat function if you want to
heat or ventilate the vehicle interior when
the ignition is switched off. The residual
heat function can only be activated or deac- tivated with the ignition switched off.
R If you change the settings of the climate
control system, the climate status display
appears for approximately three seconds
at the bottom of the screen in the Audio/
COMAND display (see separate operating
instructions). You will see the current set-
tings of the various climate control func-
tions.
DYNAMIC SELECT button (except
Mercedes-AMG vehicles) You can choose between various drive pro-
grams with the DYNAMIC SELECT button
(Y
page 166).
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
settings can also be influenced in drive pro-
gram I.
If you have selected drive program Cor S, the
climate settings are not affected.
ECO start/stop function During automatic engine switch-off, the cli-
mate control only operates at a reduced capa-
city. If you require the full climate control out-
put, you can switch off the ECO start/stop
function by pressing the ECO button
(Y page 163). Operating the climate control system
Switching the climate control on or off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could mist up.
Therefore, only switch off climate control
briefly.
Air-conditioning system X
Turn the key to position 2in the ignition
lock (Y page 157).
X To switch on: turn controlAclockwise to
the desired position (except position 0)
(Y page 137).
X To switch off: turn controlAanti-clock-
wise to position 0(Y page 137).
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock (Y page 157).
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or X Press the ^button.
The indicator lamp in the ^button goes
out. The previous settings are reactivated.
X To deactivate: press the^button.
The indicator lamp in the ^button lights
up.
i THERMOTRONIC automatic climate con-
trol: switch on climate control primarily
using the Ãbutton. 140
Operating the climate control systemClimate control