2021 FORD MUSTANG air conditioning

Thanks to a popular mix of appearance,
features and power, the 1969-73 Mach 1's
proved to be everyman's muscle car, and
have earned a respected place in Mustang
performance lore. Beyond those classic
years, the Mach 1 carried over for all five
years of the often overlooked 1974-78's
before a hiatus that ended with the
modern and muscular 2003-04's. Mach
1’
s return to the Mustang lineup for 2021
will add a new chapter on modern-day
muscle for this beloved model, and will
cement its rightful place near the very top
of Mustang performance history.
John M. Clor
Enthusiast Communications Manager /
FORD PERFORMANCE
SYMBOLS GLOSSARY
These are some of the symbols you may
see on your vehicle. Air conditioning system
Air conditioning system lubricant
type
Anti-lock braking system
Avoid smoking, flames or sparks
Battery
Battery acid
Brake fluid - non petroleum
based Brake system
Brake system
Cabin air filter
Check fuel cap
Child safety door lock or unlock
Child seat lower anchor
Child seat tether anchor
Cruise control
Do not open when hot
Engine air filter
Engine coolant
Engine coolant temperature
Engine oil
Explosive gas
Fan warning
13
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing IntroductionE162384 E231157 E270480 E139223 E141128 E71340

MANUAL CLIMATE CONTROL
Note:
Depending on your vehicle option
package, the controls may look different
from what you see here.
Directing the Airflow Press and release the button to
direct airflow to the windshield
air vents and de-mister.
Press and release the button to
direct airflow to the instrument
panel air vents.
Press and release the button to
direct airflow to the footwell air
vents.
You can direct air through the windshield
and footwell air vents or the instrument
panel and footwell air vents at the same
time. Setting the Blower Motor Speed Turn the control to adjust the volume of
air circulated in the vehicle.
Setting the Temperature
Turn the control to set the temperature.
Switching the Air Conditioning On
and Off
Press and release the button.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Climate ControlE287201 E244097 E265389 E244106

Use air conditioning with recirculated air
to improve cooling performance and
efficiency.
Note:
In certain conditions such as
maximum defrost, the air conditioning
compressor may continue to operate even
though you switch off the air conditioning.
Switching the Climate Control On
and Off Press and release the button.
Switching Maximum Air
Conditioning On and Off Turn the temperature control
counterclockwise to the lowest
setting.
Note: Recirculated air flows through the
instrument panel air vents, air conditioning
turns on and the blower motor adjusts to
the highest speed.
Switching Maximum Defrost On
and Off Turn the temperature control
clockwise to the highest setting.
Note: Air flows through the windshield air
vents, and the blower motor adjusts to the
highest speed.
You can also use this setting to defog and
clear the windshield of a thin covering of
ice. The heated rear window also turns on
when you select maximum defrost.
Note: To prevent window fogging, you
cannot select recirculated air when
maximum defrost is on. Switching Recirculated Air On and
Off Press and release the button 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.
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 various air distribution control
combinations during hot weather to improve
cooling efficiency.
AUTOMATIC CLIMATE
CONTROL Note:
Depending on your vehicle option
package, the controls may look different
from what you see here.
Note: You can switch temperature units
between Fahrenheit and Celsius.
Note: You can control some of the climate
features through the touchscreen.
Setting the Blower Motor Speed Press and release + or - to adjust
the volume of air circulated in
the vehicle.
128
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Climate Control E287205

Setting the Temperature
Press the toggle button on the left-hand
side of the climate control upward or
downward to set the left-hand
temperature.
Note:
This control also adjusts the
right-hand side temperature when you
switch off dual zone mode.
Press the toggle button on the right-hand
side of the climate control upward or
downward to set the right-hand
temperature.
Switching Auto Mode On and Off Press and release the button to
switch on automatic operation,
then set the temperature.
The system adjusts the blower motor
speed, air distribution, air conditioning
operation, and outside or recirculated air
to reach and maintain the temperature you
have set.
Note: You can also switch off dual zone
mode by pressing and holding the button
for more than two seconds.
Switching the Air Conditioning On
and Off Press and release the button.
Use air conditioning with recirculated air
to improve cooling performance and
efficiency.
Note: In certain conditions, such as
maximum defrost, the air conditioning
compressor may continue to operate even
though you switch off the air conditioning. Switching the Climate Control On
and Off Press and release the button.
Switching Defrost On and Off Press and release the button to
distribute air through the
windshield air vents and
de-mister.
You can also use this setting to defog and
clear the windshield of a thin covering of
ice.
Switching Maximum Air
Conditioning On and Off Press and release the button for
maximum cooling.
Recirculated air flows through the
instrument panel air vents, air conditioning
turns on and the blower motor adjusts to
the highest speed.
Switching Maximum Defrost On
and Off Press and release the button for
maximum defrosting.
Air flows through the windshield air vents,
and the blower motor adjusts to the
highest speed.
You can also use this setting to defog and
clear the windshield of a thin covering of
ice.
Note: To prevent window fogging, you
cannot select recirculated air when
maximum defrost is on.
Note: The heated rear window also turns
on when you select maximum defrost.
129
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Climate Control

When Towing a Trailer
•
Do not drive faster than 70 mph
(113 km/h) during the first 500 mi
(800 km).
• Do not make full-throttle starts.
• Check your hitch, electrical connections
and trailer wheel lug nuts thoroughly
after you have traveled 50 mi (80 km).
• When stopped in congested or heavy
traffic during hot weather, place the
transmission in park (P) or neutral (N)
to aid engine and transmission cooling
and to help air conditioning
performance.
• Switch off the speed control with
heavy loads or in hilly terrain. The
speed control may turn off
automatically when you are towing on
long, steep grades.
• Shift to a lower gear when driving down
a long or steep hill. Do not apply the
brakes continuously, as they may
overheat and become less effective.
• If your transmission is equipped with a
Grade Assist or Tow/Haul feature, use
this feature when towing. This provides
engine braking and helps eliminate
excessive transmission shifting for
optimum fuel economy and
transmission cooling.
• Allow more distance for stopping with
a trailer attached. Anticipate stops and
brake gradually.
• Avoid parking on a slope. However, if
you must park on a slope:
1. Turn the steering wheel to point your vehicle tires away from traffic flow.
2. Set your vehicle parking brake.
3. Place the automatic transmission in park (P) or manual transmission in a
low gear. 4. Place wheel chocks in front and back
of the trailer wheels. Chocks are not
included with your vehicle.
Launching or Retrieving a Boat or
Personal Watercraft (PWC)
Note: Disconnect the wiring to the trailer
before
backing the trailer into the water.
Note: Reconnect the wiring to the trailer
after
removing the trailer from the water.
When backing down a ramp during boat
launching or retrieval:
• Do not allow the static water level to
rise above the bottom edge of the rear
bumper.
• Do not allow waves to break higher
than
6 in (15 cm) above the bottom
edge of the rear bumper.
Exceeding these limits may allow water to
enter vehicle components:
• Causing internal damage to the
components.
• Affecting driveability, emissions, and
reliability.
Any time the rear axle submerges in water,
replace the rear axle lubricant. Water may
contaminate the rear axle lubricant, which
is not a normal maintenance inspection
item unless there is a possibility of a leak
or other axle repair is required.
221
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Towing

REDUCED ENGINE
PERFORMANCE
WARNING: If you continue to drive
your vehicle when the engine is
overheating, the engine could stop
without warning. Failure to follow this
instruction could result in the loss of
control of your vehicle.
If the engine coolant temperature gauge
needle moves to the upper limit position,
the engine is overheating. See Gauges
(page 90).
You must only drive your vehicle for a short
distance if the engine overheats. The
distance you can travel depends on
ambient temperature, vehicle load and
terrain. The engine continues to operate
with limited power for a short period of
time.
If the engine temperature continues to rise,
the fuel supply to the engine reduces. The
air conditioning switches off and the engine
cooling fan operates continually.
1. Gradually reduce your speed and stop your vehicle as soon as it is safe to do
so.
2. Immediately switch the engine off to prevent severe engine damage.
3. Wait for the engine to cool down.
4. Check the coolant level. See
Engine
Coolant Check (page 264).
5. Have your vehicle checked as soon as possible. Reduced Vehicle Top Speed
Your vehicle's ability to reach and maintain
top speed is partially dependent upon
ambient temperature. Under certain
environmental conditions, your vehicle's
top speed may be reduced to protect
powertrain components.
ECONOMICAL DRIVING
Fuel economy is affected by several things
such as how you drive, the conditions you
drive under and how you maintain your
vehicle.
There are some things to keep in mind that
may improve your fuel economy:
•
Accelerate and slow down in a smooth,
moderate fashion.
• Drive at steady speeds.
• Anticipate stops; slowing down may
eliminate the need to stop.
• Combine errands and minimize
stop-and-go driving (When running
errands, go to the furthest destination
first and then work your way back
home).
• Close the windows for high-speed
driving.
• Drive at reasonable speeds.
• Keep the tires properly inflated and use
only the recommended size.
• Use the recommended engine oil.
• Perform all regularly scheduled
maintenance.
There are also some things you may want
to avoid doing because they reduce your
fuel economy:
• Avoid sudden or hard accelerations.
• Avoid revving the engine before turning
off the car.
• Avoid long idle periods.
229
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Driving Hints

•
Do not warm up your vehicle on cold
mornings.
• Reduce the use of air conditioning and
heat.
• Avoid using speed control in hilly
terrain.
• Do not rest your foot on the brake
pedal while driving.
• Avoid carrying unnecessary weight.
• Avoid adding particular accessories to
your vehicle (e.g. bug deflectors,
rollbars/light bars, running boards, ski
racks).
• Avoid driving with the wheels out of
alignment.
COLD WEATHER
PRECAUTIONS
The functional operation of some
components and systems can be affected
at temperatures below approximately
-13°F (-25°C).
BREAKING-IN
Your vehicle requires a break-in period. For
the first 1,000 mi (1,600 km), avoid driving
at high speeds, heavy braking, aggressive
shifting or using your vehicle to tow. During
this time, your vehicle may exhibit some
unusual driving characteristics.
Ground Clearance
Since ground clearance is reduced, use
caution when approaching curbs or curb
stops from the front and rear as vehicle
damage may occur. Additionally, when
crossing speed bumps or driveway curbs,
you should approach at a 45 degree angle
to reduce the risk of vehicle damage. DRIVING THROUGH WATER WARNING:
Do not drive through
flowing or deep water as you may lose
control of your vehicle.
Note: Driving through standing water can
cause vehicle damage.
Note: Engine damage can occur if water
enters the air filter.
Before driving through standing water,
check the depth. Never drive through water
that is higher than the bottom of the front
rocker area of your vehicle. When driving through standing water, drive
very slowly and do not stop your vehicle.
Your brake performance and traction may
be limited. After driving through water and
as soon as it is safe to do so:
•
Lightly press the brake pedal to dry the
brakes and to check that they work.
• Check that the horn works.
• Check that the exterior lights work.
• Turn the steering wheel to check that
the steering power assist works.
230
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Driving Hints E266447

Protected Component
Fuse Rating
Fuse or Relay
Number
Convertible top master motor (base).
20A 2
17
Not used (GT500).
—
Not used.
—
18
Steering column lock relay (base).
20A 3
19 Transmission control unit (GT500).
10A 3
Brake on-off switch.
10A 3
20
Horn.
20A 3
21
Powertrain control module relay.
10A 3
22
Air conditioning clutch.
10A 3
23
Voltage quality module.
30A 2
24
Steering column lock relay (GT500).
20A 2
25
Not used (base).
—
Windshield wiper motor.
25A 2
26
Not used.
—
27
Automatic brake system valve.
30A 2
28
Not used.
—
29
Starter motor solenoid.
30A 2
30
Not used.
—
31
Latch relay coil.
10A 3
32
Run/start (base).
15A 3
33 Left-hand high-intensity discharge head-
lamps (GT500).
20A 3
Exhaust valves.
15A 3
34
247
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Fuses