2019-2026 Mazda 3 4 Door Interior Features -> Climate Control System User Manual
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Interior Features -> Climate Control System for Your Mazda 3 4 Door Fourth Generation (2019-2026)

Interior Features  
Climate Control System  
malfunction of the air conditioner.  
Consult a professional, government  
certified repairer for the inspection  
or repair because a special device is  
required for the air conditioner  
maintenance.  
Operating Tips  
Operating Tips  
▼
Operate the climate control system  
with the engine running.  
To prevent the battery from being  
discharged, do not leave the fan  
control switch on for a long period of  
time with the ignition switched ON  
when the engine is not running.  
For details, consult an Authorized  
Mazda Dealer.  
(With i-stop)  
The airflow amount may decrease  
slightly while the i-stop function is  
operating.  
Clear all obstructions such as leaves,  
snow and ice from the hood and the  
air inlet in the cowl grille to improve  
the system eꢀciency.  
1. Label  
Use the climate control system to  
defog the windows and dehumidify  
the air.  
The recirculate mode should be used  
when driving through tunnels or  
while in a traꢀc jam, or when you  
would like to shut oꢁ outside air for  
quick cooling of the interior.  
Use the outside air position for  
ventilation or windshield defrosting.  
If the vehicle has been parked in  
direct sunlight during hot weather,  
open the windows to let warm air  
escape, then run the climate control  
system.  
Run the air conditioner about 10  
minutes at least once a month to  
keep internal parts lubricated.  
Have the air conditioner checked  
before the weather gets hot. Lack of  
refrigerant may make the air  
conditioner less eꢀcient.  
The refrigerant specifications are  
indicated on a label attached to the  
inside of the engine compartment. If  
the wrong type of refrigerant is used,  
it could result in a serious  
5-2  
Interior Features  
Climate Control System  
Airflow direction adjustment  
Vent Operation  
Adjusting the Vents  
▼
Directing airflow  
To adjust the direction of airflow, move  
the adjustment knob.  
NOTE  
When using the air conditioner  
1. Knob  
under humid ambient temperature  
conditions, the system may blow fog  
from the vents. This is not a sign of  
trouble but a result of humid air  
being suddenly cooled.  
Passenger's Side Vents  
Air vent open/close  
The air vents can be fully opened and  
closed by operating the knob.  
Driver's Side Vents  
Air vent open/close  
1. Knob  
2. Open  
3. Close  
Airflow direction adjustment  
1. Knob  
2. Open  
3. Close  
NOTE  
The figure indicates the air vent on the  
left side of the instrument cluster. The  
operation direction for the air vent on  
the right side of the instrument cluster  
is symmetrical with the air vent on the  
left side.  
1. Knob  
5-3  
Interior Features  
Climate Control System  
Defroster and Floor Vents  
Selecting the Airflow Mode  
▼
Dashboard Vents  
Dashboard and Floor Vents  
Floor Vents  
Defroster Vents  
NOTE  
The location airflow exits the air vents  
and the airflow amount may change  
depending on the open or close status  
of the air vents.  
5-4  
Interior Features  
Climate Control System  
Manual Type  
Manual Type  
▼
1. A/C switch  
2. Mode selector switch  
3. Air intake selector switch  
4. Fan control dial  
5. Rear window defogger switch  
6. Windshield defroster switch  
7. Temperature control dial  
Fan control dial  
Control Switches  
▼
This dial allows variable fan speeds.  
The fan has seven speeds.  
Temperature control dial  
This dial controls temperature. Turn it  
clockwise for hot and  
Mode selector switches  
counterclockwise for cold.  
The desired airflow mode can be  
selected (page 5-4).  
MAX A/C  
A/C switch  
Fully turn the temperature control dial  
counterclockwise for MAX A/C  
(maximum cooling).  
Press the A/C switch to turn the air  
conditioner on. The indicator light on  
the switch will illuminate when the fan  
control dial is in any position except  
OFF.  
NOTE  
When the mode is set to  
or  
with  
the fan control dial in a position other  
than 0 and the temperature control  
dial in the MAX A/C position, the air  
intake selector switches to the  
recirculated air position and the A/C  
turns on automatically.  
Press the switch once again to turn the  
air conditioner oꢁ.  
NOTE  
The air conditioner may not function  
when the outside temperature  
approaches 0 °C (32 °F).  
If A/C is not desired, press the A/C  
switch to turn it oꢁ.  
5-5  
Interior Features  
Climate Control System  
Air intake selector switch  
To exit the default recirculated air  
position, press the air intake selector  
switch to select the outside air  
position.  
This switch controls the source of air  
entering the vehicle.  
When the air intake selector switch is  
set to the outside air position and  
the outside temperature exceeds  
about 73°F (23℃), the climate  
control system may automatically  
select the recirculated air position to  
improve the eꢀciency of the climate  
control system.  
Outside or recirculated air positions  
can be selected. Press the switch to  
select outside/recirculated air  
positions.  
Recirculated air position (indicator  
light illuminated)  
Outside air is shut oꢁ. Air within the  
vehicle is recirculated. Use this  
position when going through tunnels,  
driving in congested traꢀc (high engine  
exhaust areas), or when quick cooling  
is desired.  
Windshield defroster switch  
Press the switch to defrost the  
windshield and front door windows.  
Refer to Windshield Defrosting and  
Defogging on page 5-8.  
Outside air position (indicator light  
turned oꢀ)  
Outside air is allowed to enter the  
cabin. Use this position for ventilation  
or windshield defrosting.  
WARNING  
Do not use the  
position (indicator  
light turns on) in cold or rainy  
weather:  
Using the  
position (indicator light  
turns on) in cold or rainy weather is  
dangerous as it will cause the windows  
to fog up. Your vision will be  
hampered, which could lead to a  
serious accident.  
NOTE  
The recirculated air position is the  
default position whenever the  
ignition is switched ON, the climate  
control system is on, and the outside  
temperature exceeds about 73°F  
(23℃).  
5-6  
Interior Features  
Climate Control System  
Rear window defogger switch  
Cooling  
▼
Press the rear window defogger switch  
to defrost the rear window.  
Refer to Rear Window Defogger on  
page 4-69.  
1. Press the  
2. Set the temperature control dial to  
the cold position.  
3. Set the fan control dial to the  
desired speed.  
4. Turn on the air conditioner by  
pressing the A/C switch.  
switch.  
Heating  
▼
1. Press the  
switch.  
5. After cooling begins, adjust the fan  
control dial and temperature  
control dial as needed to maintain  
maximum comfort.  
2. Set the air intake selector to the  
outside air position (indicator light  
turns oꢁ).  
3. Set the temperature control dial to  
the hot position.  
CAUTION  
4. Set the fan control dial to the  
desired speed.  
If the air conditioner is used while  
driving up long hills or in heavy traꢀc,  
monitor the high engine coolant  
temperature warning indication to see  
if it is displayed (page 7-29).  
The air conditioner may cause engine  
overheating. If the warning indication  
is displayed, turn the air conditioner  
oꢁ (page 7-21).  
5. If dehumidified heating is desired,  
turn on the air conditioner.  
NOTE  
If the windshield fogs up easily, press  
the  
switch.  
If cooler air is desired at face level,  
press the switch and adjust the  
temperature control dial to maintain  
maximum comfort.  
The air to the floor is warmer than air  
to the face (except when the  
temperature control dial is set at the  
extreme hot or cold position).  
NOTE  
When maximum cooling is desired,  
set the temperature control dial to  
the extreme cold position and set  
the air intake selector to the  
recirculated air position, then turn  
the fan control dial fully clockwise.  
If warmer air is desired at floor level,  
press the  
switch and adjust the  
temperature control dial to maintain  
maximum comfort.  
The air to the floor is warmer than air  
to the face (except when the  
temperature control dial is set at the  
extreme hot or cold position).  
5-7  
Interior Features  
Climate Control System  
Be careful that the windows do not  
fog up when doing any of the  
following:  
Ventilation  
▼
1. Press the  
switch.  
2. Set the air intake selector to the  
outside air position (indicator light  
turns oꢁ).  
3. Set the temperature control dial to  
the desired position.  
Switching to recirculate mode  
Turning oꢁ the air conditioner  
For maximum defrosting, turn on the  
air conditioner, set the temperature  
control dial to the extreme hot  
position, and turn the fan control  
dial fully clockwise.  
4. Set the fan control dial to the  
desired speed.  
Windshield Defrosting and  
Defogging  
▼
If warm air is desired at the  
floor,  
press the  
switch.  
*1  
With the  
or  
switch, the air  
1. Press the  
switch.  
conditioner is automatically turned  
on and the outside air position is  
automatically selected to defrost the  
2. Set the temperature control dial to  
the desired position.  
3. Set the fan control dial to the  
desired speed.  
windshield. In the  
switch, the  
outside air position cannot be  
changed to the recirculated air  
position.  
4. If dehumidified heating is desired,  
turn on the air conditioner.  
WARNING  
*
1 Depending on the market.  
Dehumidifying  
Do not defog the windshield using the  
▼
switch with the temperature  
control set to the cold position:  
Operate the air conditioner in cool or  
cold weather to help defog the  
windshield and side windows.  
1. Press the desired mode switch you  
want to set.  
2. Set the air intake selector to the  
outside air position (indicator light  
turns oꢁ).  
3. Set the temperature control dial to  
the desired position.  
4. Set the fan control dial to the  
desired speed.  
Using the  
switch with the  
temperature control set to the cold  
position is dangerous as it will cause  
the outside of the windshield to fog  
up. Your vision will be hampered,  
which could lead to a serious accident.  
Set the temperature control to the hot  
or warm position when using the  
switch.  
5. Turn on the air conditioner by  
pressing the A/C switch.  
NOTE  
Fogging on the windows clears up  
more easily while the air conditioner  
is on, but they will fog up more easily  
if the air conditioner is turned oꢁ.  
5-8  
Interior Features  
Climate Control System  
NOTE  
One of the functions of the air  
conditioner is dehumidifying the air  
and, to use this function, the  
temperature does not have to be set to  
cold. Therefore, set the temperature  
control dial to the desired position  
(hot or cold) and turn on the air  
conditioner when you want to  
dehumidify the cabin air.  
5-9  
Interior Features  
Climate Control System  
Fully Automatic Type  
Fully Automatic Type  
▼
Climate control system information is displayed on the display.  
1. Driver temperature control dial  
2. AUTO switch  
3. Temperature setting display (driver’s side)  
4. Air intake display  
5. Airflow display  
6. Mode selector display  
7. Temperature setting display (passenger’s side)  
8. SYNC (synchronized temperature) switch  
9. Passenger temperature control dial  
10.A/C switch  
11.Rear window defogger switch  
12.Mode selector switch  
13.Fan control switch  
14.Air intake selector switch  
15.Windshield defroster switch  
16.Power switch  
*
Control Switches  
Seat warmer level selection  
▼
*
Heated steering wheel operation  
AUTO switch  
By pressing the AUTO switch the  
following functions will be  
NOTE  
AUTO switch indicator light  
automatically controlled in accordance  
with the selected set temperature:  
When the AUTO switch indicator  
light is on, it indicates auto  
operation, and the system will  
function automatically.  
If any of the following switches are  
operated while in auto control, the  
AUTO switch indicator turns oꢁ.  
Airflow temperature  
Amount of airflow  
Selection of airflow mode  
Outside/Recirculated air selection  
Air conditioner operation  
5-10  
*Some models.  
Interior Features  
Climate Control System  
Mode selector switch  
Fan control switch  
Windshield defroster switch  
The functions for switches other  
than those operated continue to  
operate in auto control.  
The temperature units for the  
temperature setting display can be  
changed in conjunction with the  
temperature units for the outside  
temperature display.  
Refer to Outside Temperature  
Display on page 4-25.  
Power switch (System On/Oꢀ)  
Fan control switch  
The climate control system turns on or  
oꢁ by pressing the power switch.  
The fan has 7 speeds. The selected  
speed will be displayed.  
Temperature control dial  
Mode selector switch  
This dial controls temperature. Turn it  
clockwise for hot and  
counterclockwise for cold.  
The desired airflow mode can be  
selected (page 5-4).  
Turn the temperature control dial to  
adjust the temperature between 15 °C  
(60 °F) and 29 °C (84 °F).  
NOTE  
With the airflow mode set to the  
position and the temperature control  
dial set at a medium temperature,  
heated air is directed to the feet and  
air at a comparably lower  
temperature will flow through the  
central, left and right vents.  
When the SYNC switch is on:  
Turn the driver temperature control  
dial to control the temperature  
throughout the entire cabin.  
When the SYNC switch is oꢁ:  
Turn the driver or front passenger  
temperature control dial to  
independently control the  
temperature on each side of the  
cabin.  
To set the air vent to  
, press the  
windshield defroster switch.  
In the  
position, the outside air  
position is automatically selected.  
NOTE  
The climate control system changes  
to the individual operation mode  
(SYNC switch indicator light turns  
oꢁ) by turning the front passenger  
temperature control dial even when  
the SYNC switch is on, which allows  
individual control of the set  
temperature for the driver and front  
passenger.  
When you set the temperature to the  
lower or upper limit, “Lo” or “Hi” is  
displayed.  
5-11  
Interior Features  
Climate Control System  
A/C switch  
NOTE  
The recirculated air position is the  
Pressing the A/C switch while the  
AUTO switch is turned on will turn oꢁ  
the air conditioner (cooling/  
dehumidifying functions).  
The on/oꢁ of the air conditioner  
switches each time the A/C switch is  
pressed.  
default position whenever the  
ignition is switched ON, the climate  
control system is on, and the outside  
temperature exceeds about 73°F  
(23℃).  
To exit the default recirculated air  
position, press the air intake selector  
switch to select the outside air  
position.  
When the air intake selector switch is  
set to the outside air position and  
the outside temperature exceeds  
about 73°F (23℃), the climate  
control system may automatically  
select the recirculated air position to  
improve the eꢀciency of the climate  
control system.  
NOTE  
The air conditioner operates when  
the A/C switch is pressed while the  
air conditioner is turned oꢁ.  
The air conditioner may not function  
when the outside temperature  
approaches 0 °C (32 °F).  
Air intake selector switch  
Outside or recirculated air positions  
can be selected. Press the switch to  
select outside/recirculated air  
positions.  
SYNC (Synchronized Temperature)  
switch  
Use the SYNC switch to change the  
mode between the individual  
operation (driver and passenger) and  
interconnection (simultaneous)  
modes.  
Recirculated air position (  
)
Outside air is shut oꢁ. Air within the  
vehicle is recirculated. Use this  
position when going through tunnels,  
driving in congested traꢀc (high engine  
exhaust areas), or when quick cooling  
is desired.  
Interconnection mode (indicator light  
turns on)  
The set temperature for the driver and  
front passenger is controlled  
simultaneously.  
Outside air position (  
)
Outside air is allowed to enter the  
cabin. Use this position for ventilation  
or windshield defrosting.  
Individual operation mode (indicator  
light turns oꢀ)  
The set temperature can be controlled  
individually for the driver and front  
passenger.  
WARNING  
Do not recirculate the air in the cabin  
during cold or rainy weather:  
Windshield defroster switch  
Recirculating the air in the cabin during  
cold and rainy weather is dangerous as  
it will cause the windows to fog up.  
Your vision will be hampered, which  
could lead to a serious accident.  
Press the switch to defrost the  
windshield and front door windows.  
Refer to Windshield Defrosting and  
Defogging on page 5-14.  
5-12  
Interior Features  
Climate Control System  
Rear window defogger switch  
Operation of Automatic Air  
Conditioner  
▼
Press the rear window defogger switch  
to defrost the rear window.  
Refer to Rear Window Defogger on  
page 4-69.  
1. Press the AUTO switch. Selection of  
the airflow mode, air intake  
selector and amount of airflow will  
be automatically controlled.  
2. Use the temperature control dial to  
select a desired temperature.  
If you want to set the temperature  
on the front passenger's side  
separately from the driver's side,  
turn the front passenger  
temperature control dial to switch  
the mode automatically to the  
individual operation mode and set  
the temperature for the front  
passenger's side.  
To turn oꢁ the system, press the power  
switch.  
NOTE  
Set the control dial to the  
recommended temperature of 22 °C  
(72 °F), and then adjust it as desired.  
Setting the temperature to maximum  
hot or cold will not provide the  
desired temperature at a faster rate.  
When selecting heat, the system will  
restrict airflow until the engine has  
warmed to prevent cold air from  
blowing out of the vents.  
5-13  
Interior Features  
Climate Control System  
Windshield Defrosting and  
Sunlight/Temperature Sensor  
▼
▼
Defogging  
The climate control system measures  
inside and outside temperatures,  
humidity and sunlight using the  
sunlight/temperature sensor. It sets  
temperatures inside the cabin  
accordingly.  
Press the windshield defroster switch.  
In this position, the outside air position  
is automatically selected, and the air  
conditioner automatically turns on.  
The air conditioner will directly  
dehumidify the air to the front  
windshield and side windows on page  
5-4.  
CAUTION  
Do not obstruct both sensors,  
otherwise the climate control system  
will not operate properly.  
Airflow amount will be increased.  
WARNING  
Sunlight sensor  
Set the temperature control to the hot  
or warm position when defogging  
(
position):  
Using the position with the  
temperature control set to the cold  
position is dangerous as it will cause  
the outside of the windshield to fog  
up. Your vision will be hampered,  
which could lead to a serious accident.  
1. Sunlight sensor  
NOTE  
Interior temperature sensor  
Fogging on the windows clears up  
more easily while the air conditioner  
is on, but they will fog up more easily  
if the air conditioner is turned oꢁ.  
Be careful that the windows do not  
fog up when doing any of the  
following:  
Switching to recirculate mode  
Turning oꢁ the air conditioner  
Use the temperature control dial to  
increase the air flow temperature  
and defog the windshield more  
quickly.  
1. Interior temperature sensor  
5-14  

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