Ford Super Duty (2018 year). Manual — part 37

Recirculated air: Press to switch between outside air and recirculated air. The
air currently in the passenger compartment recirculates. This may reduce the
time needed to cool the interior (when used with A/C) and reduce unwanted
odors from entering your vehicle.

E

Note: Recirculated air may turn off (or prevent you from switching on) in all air
flow modes except MAX A/C to reduce the risk of fogging. Recirculation may
also turn on and off in Panel or Panel/Floor air flow modes during hot weather
in order to improve cooling efficiency.

MAX A/C: Press for maximum cooling. The driver and passenger settings set
to LO, recirculated air flows through the instrument panel vents, air conditioning
turns on and the fan adjusts to the highest speed.

F

DUAL: Press to switch on temperature control for the passenger side of the
vehicle. When dual zone is off, passenger temperature settings remain the same
as the driver settings.

G

Passenger temperature control: Adjusts the temperature setting on the
passenger side.

H

A/C: Press to switch the air conditioning on or off. Use A/C with recirculated
air to improve cooling performance and efficiency.

I

Note: In certain conditions (for example, maximum defrost), the air conditioning
compressor may continue to operate even though you switch off the air
conditioning.

Heated seats: Press to switch the heated seats on and off. See Heated Seats
(page 164).

J

Climate controlled seats: Press to switch the climate controlled seats on
and off. See Climate Controlled Seats (page 165).

K

Fan speed control: Adjusts the volume of air circulated in the vehicle.

L

Heated rear window: Press to switch the heated rear window on and off. See
Heated Rear Window (page 154).

M

Driver temperature control: Adjusts the temperature setting on the driver
side. This control also adjusts the passenger side temperature when you switch
off dual zone mode.

N

HINTS ON CONTROLLING THE
INTERIOR CLIMATE

General Hints

Note: Prolonged use of recirculated air may
cause the windows to fog up.

Note: You may feel a small amount of air
from the footwell air vents regardless of the
air distribution setting.

Note: To reduce humidity build-up inside
your vehicle, do not drive with the system
switched off or with recirculated air always
switched on.

Note: Do not place objects under the front
seats as this may interfere with the airflow
to the rear seats.

Note: Remove any snow, ice or leaves from
the air intake area at the base of the
windshield.

Note: To improve the time to reach a
comfortable temperature in hot weather,
drive with the windows open until you feel
cold air through the air vents.

Manual Climate Control

Note: To reduce fogging of the windshield
during humid weather, adjust the air
distribution control to the windshield air
vents position.

Automatic Climate Control

Note: Adjusting the settings when your
vehicle interior is extremely hot or cold is
not necessary. The system automatically
adjusts to heat or cool the interior to your
selected temperature as quickly as possible.
For the system to function efficiently, the
instrument panel and side air vents should
be fully open.

Note: If you select AUTO during cold
temperatures, the system directs airflow to
the windshield and side window vents. In
addition, the fan may run at a slower speed
until the engine warms up.

Note: If you select AUTO during hot
temperatures and the inside of the vehicle
is hot, the system automatically uses
recirculated air to maximize interior cooling.
Fan speed may also reduce until the air
cools.

Quickly Heating the Interior

Automatic climate control

Manual climate control

Press AUTO.

Adjust the fan speed to the highest
setting.

1

Adjust the temperature control to the
desired setting.

Adjust the temperature control to the
full heat setting.

2

Direct air to the footwell using the air
distribution buttons.

3

Recommended Settings for Heating

Automatic climate control

Manual climate control

Press AUTO.

Adjust the fan speed to the center
setting.

1

Adjust the temperature control to the
desired setting. Use 72°F (22°C) as a
starting point, then adjust the setting as
necessary.

Adjust the temperature control to the
midway point of the hot settings.

2

Direct air to the footwell using the air
distribution buttons.

3

Quickly Cooling the Interior

Automatic climate control

Manual climate control

Select MAX A/C.

Select MAX A/C.

1

Drive with the windows open until you
feel cold air through the air vents.

2

Recommended Settings for Cooling

Automatic climate control

Manual climate control

Press AUTO.

Adjust the fan speed to the center
setting.

1

Adjust the temperature control to the
desired setting. Use 72°F (22°C) as a
starting point, then adjust the setting as
necessary.

Adjust the temperature control to the
midway point of the cold settings.

2

Direct air to the instrument panel using
the air distribution buttons.

3

Defogging the Side Windows in Cold Weather

Automatic climate control

Manual climate control

Press the defrost button.

Direct air to the windshield using the air
distribution buttons.

1

Adjust the temperature control to the
desired setting. Use 72°F (22°C) as a
starting point, then adjust the setting as
necessary.

Press A/C.

2

Adjust the temperature control to the
desired setting.

3

Adjust the fan speed to the highest
setting.

4

HEATED REAR WINDOW

(If

Equipped)

E184884

Press the button to clear the rear
window of thin ice and fog. The
heated rear window turns off

after a short period of time.

Note: Make sure the engine is on before
operating the heated windows.

Note: Do not use razor blades or other
sharp objects to clean or remove decals
from the inside of the heated rear window.
The vehicle Warranty may not cover
damage caused to the heated rear window
grid lines.

HEATED EXTERIOR MIRRORS

When you switch the heated rear window
on, the heated exterior mirrors turn on.

Note: Do not remove ice from the mirrors
with a scraper or adjust the mirror glass
when it is frozen in place.

Note: Do not clean the mirror housing or
glass with harsh abrasives, fuel or other
petroleum-based cleaning products.

CABIN AIR FILTER

Your vehicle is equipped with a cabin air
filter, which gives you and your passengers
the following benefits:
•

It improves your driving comfort by
reducing particle concentration.

•

It improves the interior compartment
cleanliness.

•

It protects the climate control
components from particle deposits.

You can locate the cabin air filter behind
the glove box.

Note: Make sure you have a cabin air filter
installed at all times. This prevents foreign
objects from entering the system. Running
the system without a filter in place could
result in degradation or damage to the
system.

Replace the filter at regular intervals. See
Scheduled Maintenance (page 581).

For additional cabin air filter information,
or to replace the filter, see an authorized
dealer.