2016 MAZDA MODEL 3 HATCHBACK cooling

3–28
Before Driving
Fuel and Emission
Engine Exhaust (Carbon monoxide)
WARNING
Do not drive your vehicle if you smell exhaust gas inside the vehicle:
Engine exhaust gas is dangerous. This gas contains 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 all 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.

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4–10
When Driving
Start/Stop Engine
Turning the Engine Off
WARNING
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 .

N O T E




y 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.
 


y When the push button start is pressed
from ON to ACC or OFF, the KEY
indicator light (green) may À ash for
approximately 30 seconds indicating
that the remaining battery power of the
key is low.
  Replace with a new battery before the
key becomes unusable.
  Refer to Key Battery Replacement on
page 6-40 .
 


y (Automatic transaxle) 
 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 pressing it any number of
times while the engine is running or the
vehicle is being driven will turn the engine
off immediately. The ignition switches to
ACC.
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5–2
Interior Features
Climate Control System
O p e r a t i n g T i p s
 












y Operate the climate control system with
the engine running.
 


y To prevent the battery from being
discharged, do not leave the fan control
dial on for a long period of time with the
ignition switched ON when the engine is
not running.
 


y Clear all obstructions such as leaves,
snow and ice from the hood and the air
inlet in the cowl grille to improve the
system ef¿ ciency.




y Use the climate control system to defog
the windows and dehumidify the air.
 


y The recirculate mode should be used
when driving through tunnels or while in
a traf¿ c jam, or when you would like to
shut off outside air for quick cooling of
the interior.
 


y Use the outside air position for
ventilation or windshield defrosting.
 


y 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)
 




y Run the air conditioner about 10 minutes
at least once a month to keep internal
parts lubricated.
 


y Have the air conditioner checked before
the weather gets hot. Lack of refrigerant
may make the air conditioner less
ef¿ cient.

 The refrigerant speci¿ cations are
indicated on a label attached to the
inside of the engine compartment. Check
the label before re¿ lling the refrigerant.
If the wrong type of refrigerant is used,
it could result in a serious malfunction
of the air conditioner.
  For details, consult an Authorized
Mazda Dealer.


Label

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5–6
Interior Features
Climate Control System
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.
WARNING
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.

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 dehumidi¿ ed heating is desired, turn
on the air conditioner.

N O T E
 


y If the windshield fogs up easily, set the
mode selector dial to the
position. 


y 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.
 


y The air to the À oor 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.

CAUTION
If the air conditioner is used while
driving up long hills or in heavy
traffi c, monitor the engine coolant
temperature warning light to see if it is
illuminated or fl ashing (page 4-20 ).
The air conditioner may cause engine
overheating. If the warning light is
illuminated or fl ashing, turn the air
conditioning off (page 7-19 ).

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5–7
Interior Features
Climate Control System
N O T E
 


y 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.
 


y If warmer air is desired at À oor level,
set the mode selector dial at the

position and adjust the temperature
control dial to maintain maximum
comfort.
 


y The air to the À oor is warmer than air
to the face (except when the temperature
control dial is set at the extreme hot or
cold position).

Ventilation
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
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 dehumidi¿ ed heating is desired, turn
on the air conditioner.

WARNING
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.

N O T E
 


y 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.
 


y If warm air is desired at the À oor, set the
mode selector dial to the
position. 


y 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.

Dehumidifying (With air
conditioner)
Operate the air conditioner in cool or cold
weather to help defog the windshield and
side windows.

1. Set the mode selector dial to the desired
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.
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5–10
Interior Features
Climate Control System
A/C switch
The air conditioning (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 turns on while the air
conditioning is operating.
N O T E
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 traf¿ c (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.
WARNING
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.

Operation of Automatic Air
Conditioning
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).
N O T E
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 control dial to the AUTO
position.
4. Press the A/C switch to operate the air
conditioning (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.

N O T E
 


y Setting the temperature to maximum
hot or cold will not provide the desired
temperature at a faster rate.
 


y When selecting heat, the system will
restrict airÀ ow until it has warmed to
prevent cold air from blowing out of the
vents.

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5–13
Interior Features
Climate Control System
Temperature control dial
This dial controls temperature. Turn it
clockwise for hot and counterclockwise
for cold.
 


y When the DUAL switch is off:
 Turn the driver temperature control dial
to control the temperature throughout
the entire cabin.
 


y 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.

N O T E
 


y The climate control system changes to
the individual operation mode ( DUAL
switch indicator light 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.
 


y 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 4-16 .

Fan control switch
The fan has seven speeds. The selected
speed will be displayed.
Mode selector switch
The desired airÀ ow mode can be selected
(page 5-4 ).
N O T E
 


y With the airÀ ow 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
À ow through the central, left and right
vents.
 


y To set the air vent to , press the
windshield defroster switch.
 


y 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
conditioning (cooling/dehumidifying
functions).
The air conditioning can be turned on and
off by pressing the A/C switch while the
fan control switch is on.
N O T E
 


y The air conditioning operates when the
A/C switch is pressed even if the fan is
off.
 


y The air conditioner may not function
when the outside temperature
approaches 0 °C (32 °F).

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5–14
Interior Features
Climate Control System
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 traf¿ c (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.
WARNING
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 the 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.
Operation of Automatic Air
Conditioning
1. Press the AUTO switch. Selection
of the airÀ ow mode, air intake
selector and amount of airÀ ow 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.
N O T E
 


y Setting the temperature to maximum
hot or cold will not provide the desired
temperature at a faster rate.
 


y When selecting heat, the system will
restrict airÀ ow until it has warmed to
prevent cold air from blowing out of the
vents.

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