Get Climate control -> Overview of climate control systems Guide for Mercedes A Class 4 Door Third Generation (2012-2017)

Overview of climate control systems

136

i Ventilate the vehicle for a brief period

Useful information

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 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 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, theintervalmaybeshorterthanstated

in the Service Booklet.

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.

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.

To prevent the windows from misting up:

switch off climate control only briefly

activate air-recirculation mode only briefly

activate the "Cooling with air dehumidifica-

tion" function

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.

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.

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.

Overview of climate control systems

137

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)

To set the airflow (Y page 143)

To activate/deactivate cooling with air dehumidification (Y page 141)

To switch the rear window heating on/off (Y page 145)

Set airflow control A to a setting between

3 and 6 (Y page 143).

Notes on using the air-conditioning

system

Recommendation for rapid cooling or

heating of the vehicle interior: briefly set

airflow control A to a setting between 3

and 6 (Y page 143).

Recommendation for a constant vehi-

cle interior temperature: set airflow con-

trol A to a setting between 1 and 3

(Y page 143).

Air-conditioning system

Below, you can find a number of tips and rec-

ommendations for optimum use of the air-

conditioning system.

Switch on the air-conditioning system by

turning control knob A clockwise to the

desired position (except position 0).

^RRecommendation for air distribution in

winter: select the O and ¯ settings

(Y page 143).

Recommendation for air distribution in

summer: select the P or P and

¯ settings (Y page 143).

Set the temperature to 22 †.

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 P and O (Y page 143).

Only use the "Windscreen demisting" func-

tion briefly until the windscreen is clear

again.

Deactivate air-recirculation mode e

(Y page 146).

Overview of climate control systems

138

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.

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:

when heating, the electrical heater booster

is deactivated and in the warming-up phase

heat output is reduced

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 C or 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).

Overview of climate control systems

139

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)

To set the air distribution (Y page 143)

Display

To activate/deactivate air-recirculation mode (Y page 146)

To switch climate control on/off (Y page 140)

To set the temperature, right (Y page 142)

To activate/deactivate the residual heat function (Y page 147)

To activate/deactivate cooling with air dehumidification (Y page 141)

To reduce the airflow (Y page 143)

To switch the rear window heating on/off (Y page 145)

To switch the ZONE function on/off (Y page 143)

Only use the "Windscreen demisting" func-

tion briefly until the windscreen is clear

again.

Information on using THERMOTRONIC

automatic climate control

Automatic climate control

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.

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 á button goes out.

The following contains instructions and rec-

ommendations to enable you to get the most

out of your THERMOTRONIC automatic cli-

mate control.

Activate climate control using the Ã and

¿ buttons. The indicator lamps in the

Ã and ¿ buttons light up.

Set the temperature to 22 †.

Climate control -> Overview of climate control systems for Your Mercedes A Class 4 Door Third Generation (2012-2017)

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