2020 MAZDA MODEL 3 HATCHBACK cooling

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.Fuel-Filler Lid and Cap
▼Fuel-Filler Lid and Cap
WA R N I N G
When removing the fuel-filler cap, loosen
the cap slightly and wait for any hissing to
stop, then remove it:
Fuel spray is dangerous. Fuel can burn skin
and eyes and cause illness if ingested. Fuel
spray is released when there is pressure in
the fuel tank and the
fuel-filler cap is
removed too quickly.
Before refueling, stop the engine, and
always keep sparks and flames away from
the filler neck:
Fuel vapor is dangerous. It could be ignited
by sparks or flames causing serious burns
and injuries.
Additionally, use of the incorrect fuel-filler
cap or not using a fuel-filler cap may result
in a fuel leak, which could result in serious
burns or death in an accident.
Do not continue refueling after the fuel
pump nozzle shuts off automatically:
Continuing to add fuel after the fuel pump
nozzle has shut off automatically is
dangerous because overfilling the fuel tank
may cause fuel overflow or leakage. Fuel
overflow and leakage could damage the
vehicle and if the fuel ignites it could cause
a fire and explosion resulting in serious
injury or death.
Before Driving
Fuel and Emission
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Turning the Engine Off
▼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 transmission)
Shift into neutral an d set the parking
brake.
(Automatic transmission)
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 i gnition is switched
from ON to OFF, whether or not the A/C
is on or off, to cool the engine
compartment quickly.
If the system detects that the remaining
battery power of the key is low when the
ignition is switched from ON to ACC or
OFF, the following is indicated.
Replace with a new battery before the
key becomes unusable.
Refer to Key Battery Replacement on
page 6-28.
A message is indicated in the display of
the instrument cluster.
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-33.
(Automatic transmission)
If the engine is turned off while the
selector lever is in a position other than
P, the ignition switches to ACC.
▼ Emergency Engine Stop
Continuously pressing the push button
start or quickly pressi
ng it any number of
times while the engin e is running or the
vehicle is being drive n will turn the engine
off immediately. The ignition switches to
ACC.
When Driving
Start/Stop Engine
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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.
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.
1. Label
Interior Features
Climate Control System
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Manual Type
▼Manual Type
With A/C switch
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

Without A/C switch
1. Mode selector switch
2. Air intake selector switch
3. Fan control dial
4. Rear window defogger switch
5. Windshield defroster switch
6. Temperature control dial

▼Control Switches
Temperature control dial
This dial controls t
emperature. Turn it
clockwise for hot and counterclockwise
for cold.
MAX A/C (With A/C switch)
Fully turn the temperature control dial
counterclockwise for MAX A/C
(maximum cooling).
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.
If A/C is not desired, press the A/C switch
to turn it off.
Fan control dial
This dial allows v ariable fan speeds.
The fan has seven speeds.
Mode selector switches
The desired airflow mode can be selected
(page 5-4).
A/C switch
*
Press the A/C swit ch 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.

Press the switch once again to turn the air
conditioner off.
NOTE
The air conditioner may not function when
the outside temperature approaches 0 °C
(32 °F).
Interior Features
Climate Control System
*Some models.5-5
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Air intake selector switch
This switch controls the source of air
entering the vehicle.

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 (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.
Windshield defroster switch
Press the switch to de frost the windshield
and front door windows.
Refer to Windshield Defrosting and
Defogging on page 5-7.
Rear window defogger switch
Press the rear window defogger switch to
defrost the rear window.
Refer to Rear Window Defogger on page
4-56.
▼ Heating
1. Press the switch.
2. Set the air intake selector to the outside air position (indicator light turns off).
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, press
the
switch.
(With A/C 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).
Interior Features
Climate Control System
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▼Cooling (With A/C switch)
1. Press the switch.
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.
CAUTION
If the air conditioner is used while driving
up long hills or in heavy traffic, 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 off (page
7-21).
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 wh en the temperature
control dial is set at the extreme hot or
cold position).
▼ Ventilation
1. Press the switch.
2. Set the air intake selector to the outside air position (indicator light turns off).
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. Press the switch.
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
switch with the temperature control set to
the cold position:
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.
NOTE
(With A/C switch)
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 off.
Interior Features
Climate Control System
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A/C switch
Pressing the A/C switch while the AUTO
switch is turned on w ill 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).
Air intake selector switch
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 d efrosting.
WA R N I N G
Do not recirculate the air in the cabin
during cold or rainy weather:
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.
SYNC (Synchronized Temperature)
switch
Use the SYNC switch to change the mode
between the individual operation (driver
and passenger) and interconnection
(simultaneous) modes.
Interconnection mo de (indicator light
turns on)
The set temperature for the driver and
front passenger is controlled
simultaneously.
Individual operation mode (indicator
light turns off)
The set temperature can be controlled
individually for the driver and front
passenger.
Windshield defroster switch
Press the switch to defrost the windshield
and front door windows.
Refer to Windshield Defrosting and
Defogging on page 5-12.
Rear window defogger switch
Press the rear window defogger switch to
defrost the rear window.
Refer to Rear Window Defogger on page
4-56.
Interior Features
Climate Control System
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Maintenance ItemNormal Driving Scheduled Maintenance Intervals
1st 2nd 3rd 4th 5th 6th 7th 8th
Brake and clutch fluid level IIIIIIII
Brake fluid With electrical
boosterRRRR
Disc brakes IIIIIIII
Tire rotation Rotate every 16,000 km (10,000 miles).
Tire inflation pressure and tire wear
*4IIIIIIII
Steering operation and linkages I I I I
Front and rear suspension, ball joints and wheel
bearing axial play IIII
Rear differential oil
*5
Transfer oil*5
Driveshaft dust boot II II
Bolts and nuts on chassis and body TTTT
Exhaust system and heat shields II
Emergency flat tire repair kit (if installed)
*6Inspect annually.
Cabin air filter Replace every 48 ,000 km (30,000 miles) or 24 months.
Function of all lights IIIIIIII
Chart symbols:
I: Inspect: Inspect and clean, repair, adjust, fill up, or replace if necessary.
R: Replace
T: Ti g h t e n
Remarks:
*1 Reset the engine oil data whene ver replacing the engine oil regardless of the message/wrench indicator light
display.
*2 Use of FL-22 is recommended wh en replacing engine coolant. Using engine coolant other than FL-22 may
cause serious damage to the engine and cooling system.
*3 According to state/provincial and federal regulations, failure to perform maintenance on these items will not void your emissions warranties. However, Mazda recommends that all maintenance services be performed at
the recommended time or mileage/ kilometer period to ensure long-term reliability.
*4 Inspect a spare tire if installed.*5 If this component has been subm erged in water, the oil should be replaced.*6 Check the tire repair fluid exp iration date every year when performing the periodic maintenance. Replace the
tire repair fluid bottle with new one before the expiration date.
Maintenance and Care
Scheduled Maintenance
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