Mercedes-Benz E-Class: Operating the climate control system

Mercedes-Benz E-Class / Mercedes-Benz E-Class W212 (2009-2016) Owners Manual / Climate control / Operating the climate control system

Mercedes-Benz E-Class: Operating the climate control system - Climate control - Mercedes-Benz E-Class W212 (2009-2016) Owners ManualMercedes-Benz E-Class: Operating the climate control system

Activating/deactivating climate control

Important information

WARNING
When the climate control system is deactivated, the outside air supply and circulation are also deactivated. Only choose this setting for a short time. Otherwise the windows could fog up, impairing visibility and endangering you and others.

Switch on climate control primarily using the Activating/deactivating button

Activating/deactivating

•► Turn the SmartKey to position 2 in the ignition lock.

•►  To switch on: press the button. button.

The indicator lamp above the lights up. Airflow and air distribution are set button lights up. Airflow and air distribution are set to automatic mode.
or
•► Press the The indicator lamp above the button button.

The indicator lamp above the goes out. The previously selected settings button goes out. The previously selected settings come into effect again.

•► To switch off: press the button. button.

The indicator lamp above the lights up. button lights up.

Activating/deactivating cooling with the air dehumidification function

Important information

The cooling with air dehumidification function is only available when the engine is running.

The air inside the vehicle is cooled and dehumidified according to the temperature selected.

WARNING
If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.

Condensation may drip from the underside of the vehicle when it is in cooling mode. This is normal and not a sign that there is a malfunction.

The cooling with air dehumidification function uses refrigerant R134a. This coolant does not contain chlorofluorocarbons, and therefore does not damage the ozone layer.

Activating/deactivating

•► To activate: press the button. button.

The indicator lamp above the lights up. button lights up.

•► To switch off: press the button. button.

The indicator lamp above the goes out. The cooling with air button goes out. The cooling with air dehumidification function has a delayed switch-off feature.

Problems with the cooling with air dehumidification function

When you press the indicator lamp in the button flashes three button, the indicator lamp in the button flashes three times or remains off. You can no longer switch on the cooling with air dehumidification function.

•► Consult a qualified specialist workshop.

Setting climate control to automatic

WARNING
If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.

In automatic mode, the set temperature is maintained automatically at a constant level.

The system automatically regulates the temperature of the dispensed air, the airflow and the air distribution.

Automatic mode will achieve optimal operation if cooling with air dehumidification is also activated. If desired, cooling with air dehumidification can be deactivated.

•► Turn the SmartKey to position 2 in the ignition lock.

•► Set the desired temperature.

•► To activate: press the button. button.

The indicator lamp above the lights up. Automatic air distribution and button lights up. Automatic air distribution and airflow are activated.

3-zone automatic climate control: when automatic mode is activated, you can select a climate mode setting

•► To deactivate: press the air distribution button.

Dual-zone automatic climate control: press button 10.

3-zone automatic climate control: press button 13.

The indicator lamp above the button button goes out.
or
•► Press the airflow button.

Dual-zone automatic climate control: press button 11.

3-zone automatic climate control: press button 12.

The indicator lamp above the button button goes out.

Adjusting the climate mode settings (AIR FLOW)

This function is only available with 3-zone automatic climate control.

The climate mode settings are especially effective at high temperatures.

You can select the following climate mode settings in automatic mode:

FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft

•► Turn the SmartKey to position 2 in the ignition lock.

•► Press the •► Press button 11 up or down and select the button.

•► Press button 11 up or down and select the desired level

Setting the temperature

2-zone automatic climate control

Different temperatures can be set for the driver's and front-passenger sides.

•► Turn the SmartKey to position 2 in the ignition lock.

•► To increase/reduce: press button 9 or 12 up or down

Only change the temperature setting in small increments. Start at 72 °F (22 °C).

3-zone automatic climate control

Automatic climate control climate zones

Automatic climate control climate zones You can select different temperature settings for the driver's and front-passenger sides as well as for the rear compartment.

•► Turn the SmartKey to position 2 in the ignition lock.

•► To increase/reduce the temperature in the front compartment: press button 10 or 14 up or down.

Only change the temperature setting in small increments. Start at 72 °F (22 °C).

•► To increase/reduce the temperature in the rear compartment using the front control panel: press the button. button.

The indicator lamp above the goes out. button goes out.

•► Press button 10 or 14 up or down.

Only change the temperature setting in small increments. Start at 72 °F (22 °C).

•► To increase/reduce the temperature in the rear compartment using the rear control panel: press button 15 or 19.

Only change the temperature setting in small increments. Start at 72 °F (22 °C).

Setting the air distribution

Air distribution settings

defroster vents Directs air through the defroster vents

and side Directs air through the center and side air vents

footwell air vents Directs the airflow through the footwell air vents

center, Directs the airflow through the center, side and footwell air vents

defroster, center and side air vents Directs the airflow through the defroster, center and side air vents

defroster and Directs air through the defroster and footwell vents

Regardless of the air distribution setting, airflow is always directed through the side air vents.. The side air vents can only be closed when the controls on the side air vents are turned downwards.

Dual-zone automatic climate control

•► Turn the SmartKey to position 2 in the ignition lock.

•► Press switch 10 up or down repeatedly until the desired symbol appears in the display

3-zone automatic climate control

Turn the SmartKey to position 2 in the ignition lock.

•► Press switch 13 up or down repeatedly until the desired symbol appears in the display

Setting the airflow

Dual-zone automatic climate control

•► Turn the SmartKey to position 2 in the ignition lock.

•► To increase/reduce: press button 11 up or down

3-zone automatic climate control

•► Turn the SmartKey to position 2 in the ignition lock.

•► To increase/reduce frontcompartment airflow: press button 12 up or down

•► To increase/reduce the rear airflow: press button 17 or 18

Switching the ZONE function on/off

•►  To switch on: press the The indicator lamp above the button button.

The indicator lamp above the lights up. button lights up.

Dual-zone automatic climate control: the temperature setting for the driver's side is not adopted for the front-passenger side.

3-zone automatic climate control: the temperature setting for the driver's side is not adopted for the front-passenger side and the rear compartment.

When the buttons for temperature, airflow or air distribution are activated, the temperature setting for the driver's side is not adopted for the other climate control zones.

•►  To switch off: press the button. button.

The indicator lamp above the goes out. button goes out.

Dual-zone automatic climate control: the temperature setting for the driver's side is adopted for the front-passenger side.

3-zone automatic climate control: the temperature setting for the driver's side is adopted for the front-passenger side and the rear compartment.

Defrosting the windshield

You can use this function to defrost the windshield or to defrost the inside of the windshield and the side windows.

You should only select the defrosting function until the windshield is clear again.

•► Turn the SmartKey to position 2 in the ignition lock.

•► To activate: press the button. button.

The indicator lamp above the lights up. button lights up.

The climate control system switches to the following functions:

 - cooling with air dehumidification on
 - high airflow
 - high temperature
 - air distribution to the windshield and front side windows
 - air-recirculation mode off

•► To switch off: press the button. button.

The indicator lamp above the goes out. The previously selected settings button goes out. The previously selected settings come into effect again. The cooling with air dehumidification function remains on. Airrecirculation mode remains deactivated.

or
 •►  Press the The indicator lamp above the button button.

The indicator lamp above the goes out. Airflow and air distribution are set button goes out. Airflow and air distribution are set to automatic mode.

or

•►  Automatic climate control: press temperature button 9 or 12 up or down.

Automatic climate control: press temperature button 10 or 14 up or down.

or

•► Dual-zone automatic climate control: press switch 11 up or down.

3-zone automatic climate control: press button 12 up or down

MAX COOL maximum cooling

The MAX COOL function is only available in vehicles for the USA.

MAX COOL is only operational when the engine is running.

When you activate MAX COOL, climate control switches to the following functions:

 - maximum cooling
 - maximum airflow
 - air-recirculation mode on

•► To activate: press the button. button.

The indicator lamp above the button lights up.

•► To deactivate: press the button button again.

The indicator lamp goes out. The previously selected settings come into effect again.

Defrosting the windows

Windows fogged up on the inside

•► Activate the cooling with air dehumidification function •► Activate automatic mode ..

•► Activate automatic mode •► If the windows continue to fog up, activate.

•► If the windows continue to fog up, activate the defrosting function

You should only select this setting until the windshield is clear again.

Windows fogged up on the outside

•► Switch on the windshield wipers.

•► Automatic climate control: press switch 10 up or down until the symbol appears in the or display. symbol appears in the display.

•►  Automatic climate control: press button 13 up or down until the symbol appears in the or display. symbol appears in the display.

You should only select this setting until the windshield is clear again.

Rear window defroster

Activating/deactivating

WARNING
Any accumulation of snow and ice should be removed from the rear window before driving.

Visibility could otherwise be impaired, endangering you and others.

The rear window defroster has a high current draw. You should therefore switch it off as soon as the window is clear as it only switches off automatically after several minutes.

If the battery voltage is too low, the rear window defroster may switch off.

•► Turn the SmartKey to position 2 in the ignition lock.

•► Press the The indicator lamp above the button button.

The indicator lamp above the lights up or goes out. button lights up or goes out.

Problems with the rear window defroster

The rear window defroster has deactivated itself prematurely or cannot be activated.

•► Switch off any consumers that are not required, e.g. reading lamps or interior lighting.

When the battery is sufficiently charged, the rear window defroster is activated again automatically.

Activating/deactivating airrecirculation mode

You can deactivate the flow of fresh air if unpleasant odors are entering the vehicle from outside. The air already inside the vehicle will then be recirculated.

The operation of air-recirculation mode is the same for all control panels.

WARNING
Fogged windows impair visibility, endangering you and others. If the windows begin to fog on the inside, switching off the air recirculation mode immediately should clear interior window fogging. If interior window fogging persists, make sure the air conditioning is activated, or press thebutton. button.

•► Turn the SmartKey to position 2 in the ignition lock.

•► To activate: press the button. button.

The indicator lamp above the lights up. button lights up.

In the event of high pollution levels19 or at high outside temperatures, airrecirculation mode is automatically activated. When air-recirculation mode is activated automatically, the indicator lamp above the Outside air is added after about 30 button does not light up.

Outside air is added after about 30 minutes.

•► To switch off: press the button. button.

The indicator lamp above the goes out. button goes out.

Air-recirculation mode deactivates automatically:

 - after approximately five minutes if outside temperatures are less than about 41 °F (5 °C)

 - after approximately five minutes if cooling with air dehumidification is deactivated

 - after approximately 30 minutes if outside temperatures are over about 41 °F (5 °C)

Activating/deactivating the residual heat function

The residual heat function is only available in vehicles for Canada with automatic climate control.

It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the temperature that has been set.

The blower will run at a low speed regardless of the airflow setting.

If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.

It is possible that the residual heat function may be activated automatically an hour after the SmartKey is removed. The vehicle is then ventilated for 30 minutes to dry the air-conditioning system.

•► Turn the SmartKey to position 0 in the ignition lock or remove it.

•► To activate: press the button. button.

The indicator lamp above the lights up. button lights up.

•► To switch off: press the button. button.

The indicator lamp above the goes out. button goes out.

Residual heat is deactivated automatically:

 - after about 30 minutes
 - when the ignition is switched on
 - if the battery voltage drops
 - if the coolant temperature is too low

Previous page: Mercedes-Benz E-Class: Overview of climate control systemsOverview of climate control systemsSetting the air ventsNext page: Mercedes-Benz E-Class: Setting the air vents