Page 249 of 553
Vent Operation
▼Adjusting the Vents
Directing airflow
To adjust the direction of airflow, move
the adjustment knob.
NOTE
When using the air conditioner 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.
Center vents (driver) and Side vents
Air vent open/close
NOTE
The air vents can be fully opened and
closed by operating the knob.
Open
Close
Knob
Airflow direction adjustment
Knob
Center vents (passenger)
Air vent open/close
OpenClose
Knob
Airflow direction adjustment
Knob
Interior Features
Climate Control System
5-3
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16
Page 250 of 553
▼Selecting the Airflow Mode
Dashboard Vents
Dashboard and Floor Vents
Floor Vents Defroster and Floor Vents
Defroster Vents
NOTE
The location airflow exits the air vents an d the airflow amount may change depending on
the open or close status of the air vents.
Interior Features
Climate Control System
5-4
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16
Page 251 of 553
Manual Type
Rear window defogger switch
Air intake selector switch Fan control dial
Temperature control dial
A/C switch
Rear window defogger switch
Air intake selector switch
A/C switch Mode selector dial
Fan control dial
Temperature control dial Mode selector dial
Type A
Type B
Interior Features
Climate Control System
5-5
MX-5_8GV5-EA-18E_Edition3
2018-7-17 15:48:16
Page 252 of 553

▼Control Switches
Temperature control dial
This dial controls t
emperature. Turn it
clockwise for hot and counterclockwise
for cold.
NOTE
(Type A)
When the mode is set to
, or a
position in between them with the fan
control dial in a position other than 0 and
the temperature control dial in the
maximum cold 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 variable fan speeds.
The fan has seven speeds.
Mode selector dial
Turn the mode selector dial to select
airflow mode (page 5-4).
NOTE
The mode selector dial can be set at the
intermediate positions (
) between each
mode. Set the dial to an intermediate
position if you want to split the airflow
between the two modes.
For example, when the mode selector
dial is at the
position between the
and positions, airflow from the floor
vent is less than that of the
position.
A/C switch
Press the A/C switch to turn the air
conditioner on. The indicator light on the
switch will illuminate w hen 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).
Air intake selector
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 fo r ventilation or
windshield defrosting.
Interior Features
Climate Control System
5-6
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16
Page 253 of 553

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.
▼ Heating
1. Set the mode sel
ector dial to the
position.
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, 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 wh en the temperature
control dial is set at the extreme hot or
cold position).
▼ Cooling
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 traffic, monitor the
high engine coolant temperature warning
indication/warning light to see if it is
illuminated or flashing (page 4-26).
The air conditioner may cause engine
overheating. If the warning light is
illuminated or flashing, turn the air
conditioner off (page 7-27).
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.
Interior Features
Climate Control System
5-7
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16
Page 254 of 553

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).
▼Ventilation
1. Set the mode selector dial to the
position.
2. Set the air intake s elector 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. 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.
(Type A)
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 wind shield. In the
or
position, the outside air position cannot
be changed to the recirculated air
position.
(Type B)
When the fan control dial is ON, and the
mode selector dial is in the
position,
the outside air position is automatically
selected to defrost the windshield. In the
position, the outside air position
cannot be changed to the recirculated
air position.
Interior Features
Climate Control System
5-8
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16
Page 255 of 553
▼Dehumidifying
Operate the air conditioner in cool or cold
weather to help defog the windshield and
side windows.
1. Set the mode sel
ector dial to the
desired position.
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.
5. Turn on the air conditioner by pressing the A/C switch.
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.
Interior Features
Climate Control System
5-9
MX-5_8GV5-EA-18E_Edition3 2018-7-17 15:48:16
Page 256 of 553
Fully Automatic Type
Rear window defogger switch
Air intake selector switch Fan control dial
Temperature control dial
A/C switch Rear window defogger switch
Air intake selector switch
A/C switch
Mode selector dial
Fan control dial
Temperature control dial Mode selector dial
Type A
Type B
Interior Features
Climate Control System
5-10
MX-5_8GV5-EA-18E_Edition3
2018-7-17 15:48:16