Get Climate control -> Operating the climate control system Guide for Mercedes CLA 4 Door First Generation (2013-2018)

To switch the rear window heating on/off (Y page 124)

To switch the ZONE function on/off (Y page 123)

Information on using THERMOTRONIC

automatic climate control

Automatic climate control

The following contains instructions and recom-

mendations to enable you to get the most out of

your THERMOTRONIC automatic climate con-

trol.

Activate climate control using the Ã and

¿ buttons. The indicator lamps in the

Ã and ¿ buttons light up.

Set the temperature to 22 †.

Use the "Windscreen demisting" function only

briefly until the windscreen is clear again.

Use air-recirculation mode 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.

Use the ZONE function to adopt the temper-

ature settings on the driver's side for the

front-passenger side as well. The indicator

lamp in the á button goes out.

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 be activated or deactivated only

with the ignition switched off.

If you change the settings of the climate con-

trol system, the climate status display

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 141).

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 set-

tings can also be influenced in drive program 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 climate

control operates only at a reduced capacity. If

you require the full climate control output, you

can switch off the ECO start/stop function by

pressing the ECO button (Y page 138).

Operating the climate control system

Switching the climate control on/off

General notes

When climate control is switched off, the air

supply and air circulation are also switched off.

The windows could mist up. Therefore, switch

off climate control only briefly.

Air-conditioning system

Turn the key to position 2 in the ignition lock

(Y page 133).

To switch on: turn control A clockwise to

the desired position (except position 0)

(Y page 118).

To switch off: turn control A anti-clockwise

to position 0 (Y page 118).

120

Operating the climate control system

Climate control

THERMOTRONIC automatic climate

control

Turn the key to position 2 in the ignition lock

(Y page 133).

To activate: press the Ã button.

The indicator lamp in the Ã button lights

up. Airflow and air distribution are set to auto-

matic mode.

Press the ^ button.

The indicator lamp in the ^ button goes

out. The previous settings are reactivated.

To deactivate: press the ^ button.

The indicator lamp in the ^ button lights

up.

THERMOTRONIC automatic climate control:

switch on climate control primarily using the

Ã button.

Activating/deactivating cooling with

dehumidification

General notes

If you deactivate the "Cooling with air dehumid-

ification" function, the air inside the vehicle will

not be cooled during warm weather. The air

inside the vehicle will also not be dehumidified.

The windows can mist up more quickly. There-

fore, only deactivate the "Cooling with air dehu-

midification" function briefly.

The "Cooling with air dehumidification" function

is available only when the engine is running. The

air inside the vehicle is cooled and dehumidified

according to the temperature selected.

Condensation may drip from the underside of

the vehicle when cooling mode is active. This is

normal and not a sign that there is a malfunc-

tion.

Activating/deactivating

Press the ¿ button.

The indicator lamp in the ¿ button lights

up or goes out.

The indicator lamp in the button indicates that

the respective function is activated. The cool-

ing with air dehumidification function has a

delayed switch-off feature.

Problems with the "Cooling with air dehumidification" function

Problem

Possible causes/consequences and MM Solutions

The indicator lamp in the

¿ button flashes

three times or remains

off. The cooling with air

dehumidification func-

tion cannot be activated.

The cooling with air dehumidification function has been deactivated

due to a malfunction.

Consult a qualified specialist workshop.

Setting climate control to automatic

mode

General notes

Only THERMOTRONIC automatic climate con-

trol features the "Control climate control auto-

matically" function.

In automatic mode, the set temperature is main-

tained automatically at a constant level. The

system automatically regulates the temperature

of the dispensed air, the airflow and the air dis-

tribution.

The "Cooling with air dehumidification" function

is activated automatically in automatic mode.

Operating the climate control system

121

Climate control

Setting climate control to automatic

mode

Turn the key to position 2 in the ignition lock

(Y page 133).

Set the desired temperature.

To activate: press the Ã button.

The indicator lamp in the Ã button lights

up. Automatic air distribution and airflow are

activated.

To switch to manual mode: press the É

or Ë button.

Press the K or I button.

The indicator lamp in the Ã button goes

out. Automatic air distribution and airflow are

deactivated.

Setting the temperature

Air-conditioning system

You can set the temperature for the entire vehi-

cle. The set temperature is automatically main-

tained at a constant level.

Turn the key to position 2 in the ignition lock

(Y page 133).

To increase or reduce: turn control : anti-

clockwise or clockwise (Y page 118). Change

the temperature setting only in small incre-

ments. Start at 22 †.

THERMOTRONIC automatic climate

control

Different temperatures can be set for the driv-

er's and front-passenger sides. The set temper-

ature is automatically maintained at a constant

level.

Turn the key to position 2 in the ignition lock

(Y page 133).

To increase or decrease: turn control : or

E anti-clockwise or clockwise (Y page 119).

Change the temperature setting only in small

increments. Start at 22 †.

Setting the air distribution

Air-conditioning system

Air distribution settings

Directs the airflow through the demister

vents

Directs the airflow through the centre

and side air vents

Directs the airflow through the footwell

air vents

You can also activate several of the air dis-

tribution settings simultaneously. In order to

do this, press several of the air distribution

buttons. The air is then routed through differ-

ent air vents.

Regardless of the air distribution setting,

airflow is always directed through the side air

vents. The side air vents can only be closed if

the adjusters are turned clockwise until they

engage.

Setting the air distribution

Turn the key to position 2 in the ignition lock

(Y page 133).

Press one or more of the P, O, ¯

buttons.

The corresponding indicator lamp comes on.

THERMOTRONIC automatic climate

control

Air distribution settings

Directs the airflow through the demister

vents

Directs the airflow through the centre

and side air vents

Directs the airflow through the footwell

air vents

Directs the airflow through the centre

and side air vents as well as the footwell

air vents

Directs the airflow through the centre

and side air vents as well as the demister

vents

Directs the airflow through the footwell

and demister vents

Directs the airflow through the demister

vents, the centre and side air vents as

well as the footwell air vents

122

Operating the climate control system

Climate control

Regardless of the air distribution setting,

airflow is always directed through the side air

vents. The side air vents can only be closed if

the adjusters are turned clockwise until they

engage.

Setting the air distribution

Turn the key to position 2 in the ignition lock

(Y page 133).

Press the É or Ë button repeatedly

until the desired symbol appears in the dis-

play.

Setting the airflow

Air-conditioning system

Turn the key to position 2 in the ignition lock

(Y page 133).

To increase or reduce: turn control A anti-

clockwise or clockwise (Y page 118).

THERMOTRONIC automatic climate

control

Turn the key to position 2 in the ignition lock

(Y page 133).

To increase or reduce:press the K or

I button.

Switching the ZONE function on/off

This function is only available with

THERMOTRONIC automatic climate control.

To activate: press the á button.

The indicator lamp in the á button lights

up.

The temperature setting for the driver's side

is not adopted for the front-passenger side.

To deactivate: press the á button.

The indicator lamp in the á button goes

out.

The temperature setting for the driver's side

is adopted for the front-passenger side.

Demisting the windscreen

General notes

You can use this function to defrost the wind-

screen or to demist the inside of the windscreen

and the side windows.

You should only select the "Windscreen

demisting" function until the windscreen is

clear again.

Switching the "Windscreen demisting"

function on or off

Turn the key to position 2 in the ignition lock

(Y page 133).

To activate: press the ¬ button.

The indicator lamp in the ¬ button lights

up.

The climate control system switches to the

following functions:

high airflow

high temperature

air distribution to the windscreen and front

side windows

air-recirculation mode off

The "Windscreen demisting" function auto-

matically sets the blower output to the opti-

mum demisting effect. As a result, the airflow

may increase or decrease automatically after

the ¬ button is pressed.

You can adjust the blower output manually

while the "Windscreen demisting" function is

in operation:

Air-conditioning system: turn airflow con-

trol A anti-clockwise or clockwise

(Y page 118).

THERMOTRONIC automatic climate con-

trol: press the ó or ô button.

To deactivate: press the ¬ button.

The indicator lamp in the ¬ button goes

out. The previous settings are reactivated.

Air-recirculation mode remains deactivated.

THERMOTRONIC automatic climate control:

press the Ã button.

The indicator lamp in the ¬ button goes

out. Airflow and air distribution are set to

automatic mode.

Operating the climate control system

123

Climate control

Air-conditioning system: turn temperature

control : anti-clockwise or clockwise

(Y page 118).

THERMOTRONIC automatic climate control:

turn temperature control : or E anti-clock-

wise or clockwise (Y page 119).

Demisting the windows

Windows misted up on the inside

Air-conditioning system

Activate the ¿ "Cooling with air dehumid-

ification" function.

If the windows continue to mist up, activate

the ¬ "Windscreen demisting" function.

You should only select this setting until the

windscreen is clear again.

THERMOTRONIC automatic climate con-

trol

Activate the ¿ "Cooling with air dehumid-

ification" function.

Activate automatic mode Ã.

If the windows continue to mist up, activate

the ¬ "Windscreen demisting" function.

You should only select this setting until the

windscreen is clear again.

Windows misted up on the outside

Activate the windscreen wipers.

Set the air distribution to P or O.

You should only select this setting until the

windscreen is clear again.

Rear window heating

General notes

The rear window heating has a high current

draw. You should therefore switch it off as soon

as the window is clear. The rear window heating

otherwise switches off automatically after sev-

eral minutes.

If the battery voltage is too low, the rear window

heating may switch off.

Activating/deactivating

Turn the key to position 2 in the ignition lock

(Y page 133).

Press the ¤ button.

The indicator lamp in the ¤ button lights

up or goes out.

Problems with the rear window heating

Problem

Possible causes/consequences and MM Solutions

The rear window heating

has switched off prema-

turely or cannot be

switched on.

The battery has not been sufficiently charged.

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 heating

can be switched on again.

Activating/deactivating air-recircula-

tion mode

General notes

You can deactivate the flow of fresh air tempo-

rarily if unpleasant odours are entering the vehi-

cle from outside. The air already inside the vehi-

cle will then be recirculated.

If you activate air-recirculation mode, the win-

dows can mist up more quickly, particularly at

low temperatures. Use air-recirculation mode

only briefly to prevent the windows from misting

up.

The operation of air-recirculation mode is the

same for all control panels.

124

Operating the climate control system

Climate control

Activating/deactivating

Turn the key to position 2 in the ignition lock

(Y page 133).

To activate: press the e button.

The indicator lamp in the e button lights

up.

Air-recirculation mode is activated automati-

cally:

at high outside temperatures

at high levels of pollution

When air-recirculation mode is activated auto-

matically, the indicator lamp in the e button

is not lit. Outside air is added after about

30 minutes.

To deactivate: press the e button.

The indicator lamp in the e button goes

out.

i Air-recirculation mode is deactivated auto-

matically:

after approximately five minutes at outside

temperatures below approximately 7 †

after approximately five minutes if the

"Cooling with air dehumidification" func-

tion is deactivated

after approximately 30 minutes at outside

temperatures above approximately 7 † if

the cooling with air dehumidification func-

tion is activated

Convenience opening or closing using

the air-recirculation button

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. When closing make sure that no parts of

the body are in the closing area.

WARNING

During convenience opening parts of the body

could be drawn in or become trapped

between the side window and window frame.

There is a risk of injury.

When opening, make sure that nobody is

touching the side window. If someone

becomes trapped, immediately press

the W switch in the door to stop the move-

ment of the side windows. To continue closing

the side window, pull on the W switch.

Convenience closing feature: press and

hold the e button until the side windows

start to close automatically.

Vehicles with panorama sliding sunroof:

the sliding sunroof or panorama sliding sun-

roof closes simultaneously.

The indicator lamp in the e button lights

up. Air-recirculation mode is activated.

If parts of the body are in the closing area during

convenience closing, proceed as follows:

Press the W button to stop the side win-

dows.

The side windows stop.

To then open the side window, press the W

button again.

Press and hold the e button again for at

least two seconds.

The side windows move in the opposite direc-

tion.

Only vehicles with panorama sliding sun-

roof: press the 3 switch to stop the pan-

orama sliding sunroof.

The panorama sliding sunroof stops.

To then open the panorama sliding sunroof,

pull back on the 3 switch.

i Observe the notes on the automatic revers-

ing feature for:

the side windows (Y page 89)

the panorama sliding sunroof (Y page 93)

Convenience opening feature: press and

hold the e button until the side windows

start to open automatically.

Vehicles with panorama sliding sunroof:

the panorama sliding sunroof opens simulta-

neously.

The indicator lamp in the e button goes

out. Air-recirculation mode is deactivated.

If you open the side windows or the pano-

rama sliding sunroof manually after closing

Operating the climate control system

125

Climate control

with the convenience closing feature, they

will remain in this position when opened using

the convenience opening feature.

Switching the residual heat on/off

General notes

The residual heat function is only available with

THERMOTRONIC 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 set interior temperature.

The blower will run at a low speed regardless

of the airflow setting.

If you switch on the residual heat function at

high temperatures, only the ventilation will be

activated. The blower runs at medium speed.

You cannot use the ventilation to cool the

vehicle interior to a temperature lower than

the outside temperature.

Activating/deactivating

Turn the key to position 0 in the ignition lock

or remove it (Y page 133).

Press the Ì button.

The indicator lamp in the Ì button lights

up or goes out.

The indicator lamp in the button indicates that

the respective function is activated.

i Residual heat is switched off automatically:

after approximately 30 minutes

when the ignition is switched on

if the battery voltage drops

when the auxiliary heating is switched on

Auxiliary heating

Important safety notes

DANGER

If the exhaust pipe is blocked or sufficient

ventilation is not possible, toxic exhaust

fumes can enter the vehicle, especially car-

bon monoxide. This is the case, e.g. in

enclosed spaces, or if the vehicle is stuck in

snow. There is a risk of fatal injuries.

You should switch off the auxiliary heating in

enclosed spaces which do not have an extrac-

tion system, e.g. a garage. If the vehicle is

stuck in snow and you must leave the auxiliary

heating running, keep the exhaust pipe and

the area around the vehicle clear of snow. To

guarantee a sufficient supply of fresh air, open

a window on the side of the vehicle away from

the wind.

WARNING

When the auxiliary heating is switched on,

parts of the vehicle can become very hot.

Flammable materials such as leaves, grass or

twigs may ignite if they come into contact

with:

hot parts of the exhaust system

the exhaust gas itself

There is a risk of fire.

When the auxiliary heating is switched on,

make sure that:

no flammable materials come into contact

with hot vehicle components

the exhaust gas can escape from the

exhaust pipe unhindered

the exhaust gas does not come into contact

with flammable materials.

The auxiliary heating and the exhaust gas outlet

are situated in front of the right-hand front

wheel.

Operating the auxiliary heating/ventilation

draws on the vehicle battery. After you have

heated or ventilated the vehicle a maximum of

two times, drive for a longer distance.

Switch the auxiliary heating on regularly once a

month for about ten minutes.

The auxiliary heating timer function calculates

the switch-on time according to the outside

temperature so that the vehicle is preheated by

the departure time. When the departure time is

reached, the auxiliary heating continues to heat

for a further five minutes and then switches off.

126

Operating the climate control system

Climate control

The auxiliary heating heats the air in the vehicle

interior to the set temperature. This occurs with-

out using the heat of the running engine. The

auxiliary heating is operated directly using the

vehicle's fuel. For this reason, the fuel tank must

be at least Õ full to ensure that the auxiliary

heating functions.

The auxiliary heating/ventilation automatically

adjusts to changes in temperature and weather

conditions. For this reason, the auxiliary heating

could switch from ventilation mode to heating

mode or from heating mode to ventilation mode.

The auxiliary heating switches off when the

engine is switched off. The auxiliary ventilation

switches off when you turn the key to key posi-

tion 2 (Y page 133).

The auxiliary heating switches off automatically

after 50 minutes.

You cannot use the auxiliary ventilation to cool

the vehicle interior to a temperature lower than

the outside temperature.

Before switching on

Turn the key to position 2 in the ignition lock

(Y page 133).

Set the desired temperature.

Auxiliary heating or ventilation can also be

switched on if the manually set climate control is

activated. Optimum comfort is attained by set-

ting the system to automatic mode. Set the tem-

perature to 22 †.

The auxiliary heating or auxiliary ventilation can

be switched on/off using the button on the

centre console or the remote control.

The on-board computer can be used to specify

up to three departure times, one of which may

be preselected (Y page 211).

Switching the auxiliary heating/venti-

lation on or off using the button on the

centre console

General notes

The colours of the indicator lamps on button :

signify the following:

Blue: auxiliary ventilation activated

Red: auxiliary heating activated

Yellow: departure time preselected

(Y page 211)

Activating/deactivating the auxiliary

heating or auxiliary ventilation

Press button :.

The red or blue indicator lamp in button :

lights up or goes out.

Switching the auxiliary heating/venti-

lation on or off using the remote control

General notes

Your vehicle comes with one remote control.

You may use two additional remote controls for

your vehicle. For more information, please con-

tact a qualified specialist workshop.

Store the remote control for the auxiliary heat-

ing so that the auxiliary heating cannot be

switched on unintentionally. In particular,

ensure that the remote control for the auxiliary

heating is kept out of the reach of children.

The remote control has a range of approximately

300 metres. This range is reduced by:

sources of radio interference

solid objects between the remote control and

the vehicle

Operating the climate control system

127

Climate control

the remote control being in an unfavourable

position in relation to the vehicle

transmitting from an enclosed space

If the remote control battery is low, the battery

symbol on the left of the display is shown as

empty. Replace the remote control battery and

observe the important safety notes when doing

so (Y page 129).

Activating/deactivating the auxiliary

heating or auxiliary ventilation

Remote control

Display

;

u Switches the auxiliary heating or aux-

iliary ventilation on

Checks the status

. Sets the departure time

^ Switches the auxiliary heating or aux-

iliary ventilation off

, Sets the departure time

To switch on: press and hold the u but-

ton.

ON is shown in the remote control display.

To switch off: press and hold the ^ but-

ton.

OFF is shown in the remote control display.

Checking the status of the auxiliary heat-

ing or auxiliary ventilation

Briefly press the u button.

The following messages may appear on the dis-

play:

Display Meaning

The auxiliary heating or

auxiliary ventilation is

deactivated.

The auxiliary ventilation is

activated. The number on

the display shows the

remaining time (in

minutes) for the auxiliary

ventilation.

The auxiliary heating is

activated. The number on

the display shows the

remaining time (in

minutes) for the auxiliary

heating.

A departure time has been

activated. The departure

time appears on the dis-

play.

A departure time has been

activated. The auxiliary

ventilation is currently

activated. The number on

the display shows the

remaining time (in

minutes) for the auxiliary

ventilation. If the vehicle is

not started after this time,

the running time is

increased by five minutes.

A departure time has been

activated. The auxiliary

heating is currently activa-

ted. The number on the

display shows the remain-

ing time (in minutes) for

the auxiliary heating. If the

vehicle is not started after

this time, the running time

is increased by five

minutes.

If the engine has not yet reached operating tem-

perature when it is started, the auxiliary heating

running time is increased. The auxiliary heating

continues to run until the operating temperature

is reached. If this is the case, the y symbol

appears in the remote control display and the

running time is zero minutes.

Setting the departure time

Make sure that the time set in the vehicle is

correct before setting the departure time (see

the separate operating instructions). Otherwise,

the auxiliary heating may activate at the wrong

128

Operating the climate control system

Climate control

time and at an unsuitable location. When setting

the departure time, observe the important

safety notes (Y page 126).

Briefly press the u button.

Press the , or . button repeatedly

until the time to be changed appears in the

display.

Press the u and ^ buttons at the same

time.

The Î symbol in the remote control display

flashes.

Press the , or . button to set the

desired departure time.

The longer you press the , or . but-

ton, the faster the time changes.

Press the u and ^ buttons at the same

time.

The new departure time is stored.

Activating the set departure time

Briefly press the u button.

Press the , or . button repeatedly

until the desired departure time appears in

the display.

Press the u button.

The Í symbol, the departure time and,

depending on the selected departure time,

the letter A, B or C appear in the display.

Deactivating the set departure time

Briefly press the u button.

The status of the auxiliary heating is shown on

the display.

Press the . button.

The first departure time stored appears on the

display.

Press the ^ button.

OFF is shown in the remote control display.

Replacing the remote control battery

Important safety notes

WARNING

Batteries contain toxic and corrosive substan-

ces. If batteries are swallowed, it can result in

severe health problems. There is a risk of fatal

injury.

Keep batteries out of the reach of children. If

a battery is swallowed, seek medical attention

immediately.

Environmental note

Batteries contain pollutants.

It is illegal to dispose of them

with the household rubbish.

They must be collected sep-

arately and disposed of in an

environmentally responsible

recycling system.

Dispose of batteries in an

environmentally responsible

manner. Take discharged

batteries to a qualified spe-

cialist workshop or to a col-

lection point for used batter-

ies.

Replacing the battery

A CR2450 lithium battery is required when

replacing the battery.

Press a pointed object into recess :.

Slide battery cover ; backwards in the direc-

tion of the arrow.

Insert new battery = with the lettering facing

upwards.

Slide battery cover ; in the opposite direc-

tion to the arrow on the remote control until it

engages.

Operating the climate control system

129

Climate control

Problems with the auxiliary heating/ventilation

Problem

Possible causes/consequences and MM Solutions

FAIL¨ The signal transmission between the transmitter and the vehicle is

faulty.

Change your position in relation to the vehicle, moving closer if

necessary.

Make another attempt to switch the auxiliary heating/ventilation on

or off using the remote control.

FAIL The auxiliary heating cannot be switched on or has switched itself off.

The starter battery is not sufficiently charged.

Charge the starter battery.

Make another attempt to switch on the auxiliary heating/ventilation

using the remote control.

The auxiliary heating cannot be switched on or has switched itself off.

The fuel tank content is below the reserve fuel level.

Refuel at the nearest filling station.

Make another attempt to switch on the auxiliary heating using the

remote control.

The auxiliary heating/ventilation cannot be switched on or has

switched itself off.

The auxiliary heating/ventilation is malfunctioning.

Have the auxiliary heating/ventilation checked at a qualified spe-

cialist workshop.

Air vents

Important safety notes

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 out-

lets. 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:

keep the air inlet between the windscreen and

the bonnet free of blockages, such as ice,

snow or leaves

never cover the vents or ventilation grilles in

the vehicle interior

Optimal climate control function is achieved

by opening the air vents fully and setting the

adjusters to the middle position.

130

Air vents

Climate control

Climate control -> Operating the climate control system for Your Mercedes CLA 4 Door First Generation (2013-2018)

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