2018 MAZDA MODEL 3 HATCHBACK cooling

▼Engine Exhaust (Carbon monoxide)
WA R N I N G
Do not drive your vehicle if you smell exhaust gas inside the vehicle:
Engine exhaust gas is dangerous. This gas cont
ains carbon monoxide (CO), which is colorless,
odorless, and poisonous. When inhaled, it can cause loss of consciousness and death. If you
smell exhaust gas inside the vehicle, keep a ll windows fully open and contact an Authorized
Mazda Dealer immediately.
Do not run the engine when inside an enclosed area:
Running the engine inside an enclosed area, such as a garage, is dangerous. Exhaust gas,
which contains poisonous carbon monoxide, could easily enter the cabin. Loss of
consciousness or even death could occur.
Open the windows or adjust the heating or cooling system to draw fresh air when idling the
engine:
Exhaust gas is dangerous. When the vehicle is stopped with the windows closed and the
engine running for a long time even in an open area, exhaust gas, which contains poisonous
carbon monoxide, could enter the cabin. Loss of consciousness or even death could occur.
Clear snow from underneath and around your vehicle, particularly the tail pipe, before
starting the engine:
Running the engine when a vehicle is stopped in deep snow is dangerous. The exhaust pipe
could be blocked by the snow, allowing exhaust gas to enter the cabin. Because exhaust gas
contains poisonous carbon monoxide, it could cause loss of consciousness or even death to
occupants in the cabin.
Before Driving
Fuel and Emission
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▼Emergency Operati
on for Starting
the Engine
If the KEY warning light (red) illuminates,
or the push button start indicator light
(amber) flashes, this could indicate that
the engine may not s tart using the usual
starting method. Have your vehicle
inspected at an Authorized Mazda Dealer
as soon as possible. If this occurs, the
engine can be force-started. Press and hold
the push button start until the engine starts.
Other procedures necessary for starting the
engine such as having the key in the cabin,
and depressing the clutch pedal (manual
transaxle) or the brake pedal (automatic
transaxle) are required.
Turning the Engine Off
WA R N I N G
Do not stop the engine while the vehicle is
moving:
Stopping the engine while the vehicle is
moving for any reason other than in an
emergency is dangerous. Stopping the
engine while the vehicle is moving will
result in reduced braking ability due to the
loss of power braking, which could cause
an accident and serious injury.
1. Stop the vehicle completely.
2. (Manual transaxle)
Shift into neutral and set the parking
brake.
(Automatic transaxle)
Shift the selector lever to the P
position and set the parking brake.
3. Press the push button start to turn off
the engine. The ignition position is off.
CAUTION
When leaving the vehicle, make sure the
push button start is off.
NOTE
The cooling fan in the engine
compartment could turn on for a few
minutes after the ignition is switched
from ON to OFF, whether or not the A/C
is on or off, to cool the engine
compartment quickly.
When Driving
Start/Stop Engine
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Operating Tips
Operate the climate control system with
the engine running.
To prevent the battery from being
discharged, do not leave the fan control
dial/switch on for a long period of time
with the ignition switched ON when the
engine is not running.
Clear all obstructions such as leaves,
snow and ice from the hood and the air
inlet in the cowl grille to improve the
system efficiency.
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 traffic jam, or when you would like
to shut off 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.
(With A/C switch)
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
efficient.
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 ser ious 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 conditi oner maintenance.
For details, consult an Authorized
Mazda Dealer.
Label
Interior Features
Climate Control System
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Air intake selector
This switch controls the source of air
entering the vehicle.

Press the air intake selector switch to
alternate between the outside air and
recirculated air positions.
Recirculated air position (
)
Outside air is shut off. Air within the
vehicle is recirculated.
Outside air position (
)
Outside air is allowed to enter the cabin.
Use this mode for ventilation or
windshield defrosting.
WA R N I N G
Do not use the recirculated air position in
cold or rainy weather:
Using the recirculated air position 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.
Rear window defogger switch
Press the rear window defogger switch to
defrost the rear window.
Refer to Rear Windo w Defogger on page
4-53.
▼ Heating
1. Set the mode selector dial to the
position.
2. Set the air intake selector to the outside air position.
3. Set the temperature control dial to the
hot position.
4. Set the fan control dial to the desired
speed.
5. If dehumidified heating is desired, turn on the air conditioner.
NOTE
If the windshield fogs up easily, set the
mode selector dial to the
position.
If cooler air is desired at face level, set
the mode selector dial at the
position
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).
▼ Cooling (With air conditioner)
1. Set the mode selector dial to the
position.
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.
5. After cooling begins, adjust the fan control dial and temperature control
dial as needed to maintain maximum
comfort.
Interior Features
Climate Control System
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CAUTION
If the air conditioner is used while driving
up long hills or in heavy traffic, monitor the
high engine coolant temperature warning
light to see if it is illuminated or flashing
(page 4-23).
The air conditioner may cause engine
overheating. If the warning light is
illuminated or flashing, turn the air
conditioner off (page 7-20).
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,
set the mode selector dial at the
position and adjust the temperature
control dial to maintain maximum
comfort.
The air to the floor is warmer than air
to the face (except wh en the temperature
control dial is set at the extreme hot or
cold position).
▼ Ventilation
1. Set the mode sel
ector dial to the
position.
2. Set the air intake selector to the outside air position.
3. Set the temperature control dial to the
desired position.
4. Set the fan control dial to the desired speed.
▼Windshield Defrosting and
Defogging
1. Set the mode selector dial to the
position.
2. Set the temperature control dial to the desired position.
3. Set the fan control dial to the desired speed.
4. If dehumidified heating is desired, turn
on the air conditioner.
WA R N I N G
Do not defog the windshield using the
position with the temperature control set to
the cold 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. Set the temperature control to the
hot or warm position when using the
position.
NOTE
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.
If warm air is desired at the floor, set the
mode selector dial to the
position.
In the or position, the air
conditioner is automatically turned on
and the outside air position is
automatically selected to defrost the
windshield. In the
or position, the
outside air position cannot be changed
to the recirculated air position.
Interior Features
Climate Control System
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When the fan control dial is ON, and the
mode selector dial is in the
or
position, the air conditioner is
automatically turned on and the outside
air position is automatically selected to
defrost the windshield. In the
or
position, the outside air position cannot
be changed to the recirculated air
position.
A/C switch
The air conditi oner (cooling/
dehumidifying functions) can be turned on
or off by pressing the switch while the fan
control dial is at a position other than 0.
The indicator light tu rns on while the air
conditioner is operating.
NOTE
The air conditioner may not function when
the outside temperature approaches 0 °C
(32 °F).
Air intake selector
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 off . Use this position
when going through tunnels, driving in
congested traffic (high engine exhaust
areas) or when quick cooling is desired.
Outside air position (indicator light
turned off)
Outside air is allowed to enter the cabin.
Use this mode for ventilation or
windshield defrosting.
WA R N I N G
Do not use the position in cold or rainy
weather:
Using the
position 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.
Rear window defogger switch
Press the rear window defogger switch to
defrost the rear window.
Refer to Rear Window Defogger on page
4-53.
▼ Operation of Automatic Air
Conditioner
1. Set the mode selector dial to the
AUTO position.
2. Set the air intake selector to the outside air position (indicator light turned off).
NOTE
If the recirculated air position is used
for long periods in cold weather or
high humidity, the windshield may fog
up more easily.
3. Set the fan contro l dial to the AUTO
position.
4. Press the A/C switch to operate the air
conditioner (turn indicator light on).
5. Set the temperature control dial to the
desired position.
6. To turn off the system, set the fan control dial to the 0 position.
NOTE
Setting the temperature to maximum hot
or cold will not provide the desired
temperature at a faster rate.
Interior Features
Climate Control System
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Temperature control dial
This dial controls temperature. Turn it
clockwise for hot and counterclockwise
for cold.
When the DUAL switch is off:
Turn the driver tempe rature control dial
to control the temperature throughout
the entire cabin.
When the DUAL switch is on:
Turn the driver or front passenger
temperature control dial to
independently control the temperature
on each side of the cabin.
NOTE
The climate control system changes to
the individual operation mode (DUAL
switch indicator li ght illuminated) by
turning the front passenger temperature
control dial even when the DUAL switch
is off, which allows individual control of
the set temperature for the driver and
front passenger.
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 4-17.
Fan control switch
The fan has seven speeds. The selected
speed will be displayed.
Mode selector switch
The desired airflow mode can be selected
(page 5-4).
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.
To set the air vent to , press the
windshield defroster switch.
In the or position, the air
conditioner is automatically turned on
and the outside air position is
automatically selected to defrost the
windshield. In the
or position, the
outside air position cannot be changed
to the recirculated air position.
A/C switch
Pressing the A/C switch while the AUTO
switch is turned on will turn off the air
conditioner (cooling/dehumidifying
functions).
The on/off of the air conditioner switches
each time the A/C switch is pressed.
NOTE
The air conditioner operates when the
A/C switch is pressed while the air
conditioner is turned off.
The air conditioner may not function
when the outside temperature
approaches 0 °C (32 °F).
Interior Features
Climate Control System
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Air intake selector
Outside or recirculated air positions can be
selected. Press the switch to select outside/
recirculated air positions.
Recirculated air position (
)
Outside air is shut off . Use this position
when going through tunnels, driving in
congested traffic (high engine exhaust
areas) or when quick cooling is desired.
Outside air position (
)
Outside air is allowed to enter the cabin.
Use this mode for ventilation or
windshield defrosting.
WA R N I N G
Do not use the position in cold or rainy
weather:
Using the
position 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.
DUAL switch
Use the DUAL switch to change the mode
between the individual operation (driver
and passenger) and interconnection
(simultaneous) modes.
Individual operation mode (indicator
light illuminated)
The set temperature can be controlled
individually for th e driver and front
passenger.
Interconnection mode (indicator light
turned off)
The set temperature for the driver and
front passenger is controlled
simultaneously.
Windshield defroster switch
Press the switch to defrost the windshield
and front door windows.
Refer to Windshield Defrosting and
Defogging on page 5-15.
Rear window defogger switch
Press the rear window defogger switch to
defrost the rear window.
Refer to Rear Window Defogger on page
4-53.
▼ Operation of Automatic Air
Conditioner
1. Press the AUTO switch. Selection of
the airflow mode, ai r intake selector
and amount of airflow will be
automatically controlled.
2. Use the temperature control dial to select a desired temperature.
Press the DUAL switch or turn the
front passenger temperature control
dial to control the set temperature
individually for the driver and front
passenger.
To turn off the system, press the OFF
switch.
NOTE
Setting the temperature to maximum hot
or cold will not provide the desired
temperature at a faster rate.
Interior Features
Climate Control System
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