Get Climate control -> Operating the climate control system Guide for Mercedes G Class SUV Fifth Generation (2025-2026)

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Operating the climate control system

Switching climate control on/off

To switch on: set the airflow to level 1 or higher using theH button.

To switch off: set the airflow to level 0 using theH button.

If climate control is switched off, the windows may mist up more quickly.

Switch climate control off only briefly.

Rear climate control cannot be switched off separately.

Switching the A/C function on/off via the

operating unit

The A/C function heats, cools and dehumidifies the vehicle's interior air.

Press the button¿.

Switch off the A/C function only briefly. Otherwise, the windows could mist up

more quickly.

Condensation may drip from the underside of the vehicle when cooling mode

is active. This is not indicative of a fault.

THE A/C FUNCTION WILL BE DEACTIVATED IN THE FOLLOWING CASES:

When you are driving on an uphill or downhill gradient of more than 35%

When you are driving at an angle across an incline of more than 15°

Calling up the air conditioning menu via mul‐

timedia system or the air conditioning control

panel

The air conditioning menu can be called up via the temperature display or via

the air conditioning control panel. The temperature display is always shown on

the lower edge of the media display.

Press on the temperature display on the lower edge of the media dis‐

play.

Press the A button in the air conditioning control panel.

Activating/deactivating the A/C function via

the air conditioning menu

Multimedia system:

Climate menu

First row of seats

Depending on the external conditions, support for improved cooling and dehu‐

midification of the interior air will be provided when the A/C function is activa‐

ted. If it is not possible to operate the A/C function on the climate bar on the

central display, switch the function on or off on the air conditioning control

panel.

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Select A/C (A/C).

THE A/C FUNCTION WILL BE DEACTIVATED IN THE FOLLOWING CASES:

When you are driving on an uphill or downhill gradient of more than 35%

When you are driving at an angle across an incline of more than 15°

Switch off the A/C function only briefly; otherwise the windows may mist up

more quickly.

Condensation may drip from the underside of the vehicle when cooling mode

is active. This is not indicative of a fault.

Setting climate control to automatic mode

In automatic mode, the set temperature is controlled and maintained at a

constant level by the air supply.

Press theÃ button.

To switch to manual mode: press the Ã button again.

Overview of the air distribution settings

THE SYMBOLS ON THE DISPLAY INDICATE WHICH VENTS THE AIRFLOW

IS BEING DIRECTED THROUGH:

Demister vents

Centre and side air vents

Footwell vents

Setting air distribution using the air condi‐

tioning menu

Multimedia system:

Climate menu

Select First row of seats.

To set air distribution: select ¯, P or O.

Set the airflow.

When the air conditioning system is switched on, at least one

zone is always active. However, several air distribution options

can be selected at the same time, for example to set the climate

control for the vehicle interior and the footwells simultaneously.

In doing so, the ¯ climate control for the windscreen can

only be selected for the first seat row. When automatic mode

is active, the buttons for setting the air distribution are automati‐

cally deactivated. When the air conditioning system is switched

off, the buttons remain operable and the last setting is saved.

Setting rear climate control using the air con‐

ditioning menu

Multimedia system:

Climate menu

SETTING THE TEMPERATURE

Select Second row of seats.

Set the temperature with s or r.

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SETTING THE AIRFLOW

Select Second row of seats.

Set the air flow with t or u.

CONTROLLING THE REAR CLIMATE CONTROL AUTOMATICALLY

Select AUTO.

When the defrost function is activated, some functions (e.g. the

temperature setting) will automatically be deactivated. To deacti‐

vate the defrost function, press either¬,Ã orj set the

air flow to level 0 (/page250).

Switching the synchronisation function on/off

via the air conditioning menu

Multimedia system:

Climate menu

First row of seats

The synchronisation function controls the climate control centrally. The driv‐

er's settings for temperature, airflow and air distribution are automatically

adopted for each climate zone.

Select SYNC (SYNC).

Demisting/defrosting the windows

FROZEN OR MISTED WINDSCREEN

Press the¬ button on the air-conditioning control panel

(/page247).

The windscreen is heated by warm air from the air-conditioning system

and by the electric windscreen heater.

WINDOWS MISTED UP ON THE INSIDE

Press theÃ button on the air-conditioning control panel.

If the windows remain misted up: press the¬ button.

The windscreen is heated by warm air from the air-conditioning system

and by the electric windscreen heater.

The windscreen heater can also be switched on and off sepa‐

rately on the

Climate menu via è.

WINDOWS MISTED UP ON THE OUTSIDE

Switch on the windscreen wipers.

Press theÃ button.

Switching air-recirculation mode on/off

Press the buttong.

The interior air is recirculated.

Air-recirculation mode will automatically switch to fresh air mode after a while.

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The windows may mist up more quickly with air-recirculation

mode switched on. Do not have air-recirculation mode switched

on for long periods.

Activating/deactivating ionisation

Multimedia system:

Climate menu

Air quality

When ionisation is activated, the air in the vehicle interior is enriched with

negatively charged oxygen ions. These can promote the well-being of the

vehicle occupants.

Select Ionisation.

The function can only be performed if the AUTO mode is activa‐

ted or the air distribution is set to the side air vent. The function

is restricted if the side air vents on the driver's side are closed.

Information on the windscreen heater

WARNING

Risk of burns from touching the windscreen when the windscreen

heater is switched on

The windscreen can become very hot when the windscreen heater is

switched on.

The health of persons with limited temperature sensitivity or a limited

ability to react to high temperatures may be affected or they may even

suffer burn-like injuries.

Do not touch the windscreen while the windscreen heater is

switched on.

Allow the windscreen to cool down before touching it.

REQUIREMENTS:

The vehicle is ready to drive (õ or drive range h or k is shown on

the driver display).

The relevant environmental conditions are prevailing, e.g. an outside

temperature of less than 5°C.

When ¬ is switched on, the windscreen heater will be switched on auto‐

matically as needed.

The windscreen heater can also be switched on and off separately on the

Climate menu via è.

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If the on-board electrical system voltage is low, the function of

the windscreen heater may be impaired.

Pre-entry climate control using the key

FUNCTION OF PRE-ENTRY CLIMATE CONTROL VIA THE KEY

Before you get into the vehicle, the driver's side or the whole vehicle interior

can be briefly pre-warmed or pre-cooled.

DURING PRE-COOLING, THE FOLLOWING FUNCTIONS WILL BE ACTIVA‐

TED AS NEEDED:

Automatic climate control

Blower

Seat ventilation

DURING PRE-HEATING, THE FOLLOWING FUNCTIONS WILL BE ACTIVA‐

TED AS NEEDED:

Automatic climate control

Blower

Seat heating

Steering wheel heater

Panel heating

Ionisation

You can watch an animation on this topic via the following link:

SETTING PRE-ENTRY CLIMATE CONTROL (VIA KEY) IN THE MULTIMEDIA

SYSTEM

Multimedia system:

Climate menu

Pre-entry climate ctrl

Select Z.

Select Pre-entry climate control upon unlocking.

Activate or deactivate the function.

SELECTING SEATS

Select Z.

Select Driver's seat only.

The seat-specific functions of pre-entry climate control (e.g. seat heat‐

ing) are performed for the selected seats.

When pre-entry climate control is enabled, an LED on the climate bar of the

media display will light up blue for a cooled vehicle and red for a heated

vehicle.

SWITCHING PRE-ENTRY CLIMATE CONTROL (VIA KEY) ON/OFF

Requirements:

The high-voltage battery is sufficiently charged.

The function has been activated via the multimedia system or the

Mercedes-Benz app.

To switch on: unlock the vehicle.

The climate control functions are activated for up to two minutes for

preheating and precooling.

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Pre-entry climate control (via key) cannot be activated more than three times

when the vehicle is switched off.

To switch off: push the button& up or down.

THE FOLLOWING FUNCTIONS WILL REMAIN ACTIVE ONCE THE VEHICLE

HAS BEEN STARTED:

Seat heating

Seat ventilation

Panel heating

Ionisation

Pre-entry climate control for departure time

PRE-ENTRY CLIMATE CONTROL FOR DEPARTURE TIME FUNCTION

WARNING

Risk of fatal injury due to exposure to extreme heat or cold in the

vehicle

If persons, particularly children, are subjected to prolonged exposure to

intense heat or cold, there is a risk of severe injury or even death.

Never leave persons, particularly children, unattended in the

vehicle.

WARNING

Risk of burns due to repeatedly switching on the seat heating

Repeatedly switching on the seat heating can cause the seat cushion

and seat backrest padding to become very hot.

In particular, the health of persons with limited temperature sensitivity

or a limited ability to react to high temperatures may be affected or

they may even suffer burn-like injuries.

Do not repeatedly switch on the seat heating.

To protect against overheating, the seat heating may be temporarily deactiva‐

ted after it has been switched on repeatedly.

The vehicle interior can be air-conditioned when the vehicle is parked.

When the vehicle is connected to power supply equipment, priority will be

given to charging the high-voltage battery to a specified minimum state of

charge.

THE RUNNING TIME OF PRE-ENTRY CLIMATE CONTROL MAY BE REDUCED

IN THE FOLLOWING CIRCUMSTANCES:

The vehicle is not connected to power supply equipment.

The high-voltage battery is not charged sufficiently.

With active pre-entry climate control, the state of charge of the high-voltage

battery may be reduced, even if the charging cable connector is connected.

DURING COOLING, THE FOLLOWING FUNCTIONS WILL BE ACTIVATED AS

NEEDED:

Automatic climate control

Blower

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Seat ventilation

DURING HEATING, THE FOLLOWING FUNCTIONS WILL BE ACTIVATED AS

NEEDED:

Automatic climate control

Blower

Seat heating

Steering wheel heater

Panel heating

Ionisation

SETTING PRE-ENTRY CLIMATE CONTROL FOR DEPARTURE TIME

Multimedia system:

Climate menu

Pre-entry climate ctrl

SETTING A SINGLE DEPARTURE TIME

Select ONCE.

Set a departure time.

CHANGING THE ACTIVE DEPARTURE TIME

Select ´ next to the displayed departure time.

Set a departure time.

SETTING THE WEEK PROFILE

Select WEEK PROFILE.

Set the desired departure times, e.g. every day at 08:00.

SELECTING THE ZONE

Select Z.

Select Driver's seat only.

If the Driver's seat only setting is deactivated, pre-entry climate control

will be carried out for the entire vehicle.

ACTIVATING/DEACTIVATING PRE-ENTRY CLIMATE CONTROL FOR DEPAR‐

TURE TIME

WARNING

Risk of fatal injury due to exposure to extreme heat or cold in the

vehicle

If persons, particularly children, are subjected to prolonged exposure to

intense heat or cold, there is a risk of severe injury or even death.

Never leave persons, particularly children, unattended in the

vehicle.

Requirements:

The high-voltage battery is charged sufficiently.

The function has been activated via the multimedia system.

To activate: set the departure time (/page254).

Pre-entry climate control for departure time will switch on a maximum of

55minutes before the selected departure time. It will remain active for

another five minutes if departure is delayed.

To deactivate: press the & button up or down.

THE FOLLOWING FUNCTIONS WILL REMAIN ACTIVE ONCE THE VEHICLE

HAS BEEN STARTED:

Seat heating

Seat ventilation

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Panel heating

Ionisation

Activating/deactivating immediate pre-entry

climate control

WARNING

Risk of fatal injury due to exposure to extreme heat or cold in the

vehicle

If persons, particularly children, are subjected to prolonged exposure to

intense heat or cold, there is a risk of severe injury or even death.

Never leave persons, particularly children, unattended in the

vehicle.

WARNING

Risk of burns due to repeatedly switching on the seat heating

Repeatedly switching on the seat heating can cause the seat cushion

and seat backrest padding to become very hot.

In particular, the health of persons with limited temperature sensitivity

or a limited ability to react to high temperatures may be affected or

they may even suffer burn-like injuries.

Do not repeatedly switch on the seat heating.

To protect against overheating, the seat heating may be temporarily deactiva‐

ted after it has been switched on repeatedly.

Air-conditioning of the vehicle interior can continue for up to 50minutes, e.g.

if the journey is interrupted.

Set the desired temperature using thew button.

Press button1.

The red or blue indicator lamp on button1 will light up or go out.

THE COLOURS OF THE INDICATOR LAMP HAVE THE FOLLOWING MEAN‐

INGS:

Blue: cooling is activated.

Red: heating is activated.

Yellow: the departure time has been preselected.

ACTIVATING IMMEDIATE PRE-ENTRY CLIMATE CONTROL VIA THE AIR-

CONDITIONING MENU

Press the& button on the Climate menu on the central display.

Set the desired temperature using thes or r arrow.

An LED will indicate when pre-entry climate control is activated. It will light up

blue when the vehicle is being cooled and red when it is being heated.

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Air vents

ADJUSTING THE FRONT AIR VENTS

WARNING

Risk of burns or frostbite due to being too close to the air vents

Very hot or very cold air can flow from the air vents.

Make sure that all vehicle occupants always maintain a suffi‐

cient distance from the air vents.

If necessary, direct the airflow to another area of the vehicle

interior.

TO GUARANTEE THE FLOW OF FRESH AIR THROUGH THE AIR VENTS INTO

THE VEHICLE INTERIOR, NOTE THE FOLLOWING:

Always keep the vents and ventilation grilles in the vehicle interior clear.

Keep the air inlet free of residue build-up (/page578).

To open or close: hold the centre of air vent1 and turn it to the left or

right as far as it will go.

To set the airflow direction: hold the centre of air vent1 and move it

up or down or to the left or right.

ADJUSTING THE REAR AIR VENTS

WARNING

Risk of burns or frostbite due to being too close to the air vents

Very hot or very cold air can flow from the air vents.

Make sure that all vehicle occupants always maintain a suffi‐

cient distance from the air vents.

If necessary, direct the airflow to another area of the vehicle

interior.

To open or close: hold the centre of air vent1 and turn it to the left or

right as far as it will go.

To set the airflow direction: hold the centre of air vent1 and move it

up or down or to the left or right.

Only cold air will flow from the rear air vents on the centre

console.

G-Class - Owner's Manual

Climate control Operating the climate control system

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Climate control -> Operating the climate control system for Your Mercedes G Class SUV Fifth Generation (2025-2026)

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