overheating FORD MUSTANG 2021 Owners Manual

Quick Action Menus
See Information Displays (page 99).
HORN Press on the center of the
steering wheel near the horn icon
to activate the horn.
SWITCHING THE HEATED
STEERING WHEEL ON AND OFF
(IF EQUIPPED) Touch the button to switch the
heated steering wheel on and
off.
Note: You can use the heated steering
wheel only when the engine is running.
Note: The system uses a sensor and is
designed to control the temperature of the
steering wheel and to prevent it from
overheating.
Note: In warm temperatures, the steering
wheel quickly reaches its maximum
temperature and the system reduces the
current to the heating element. This could
cause you to think that the system has
stopped working but it has not. This is
normal.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Steering WheelE248531 E270945

Blind Spot Information System
Indicator (If Equipped)
It illuminates when you switch
the system off.
See
Blind Spot Information
System (page 196).
Brake System Warning Lamp WARNING:
Driving your vehicle
with the warning lamp on is dangerous.
A significant decrease in braking
performance may occur. It may take you
longer to stop your vehicle. Have your
vehicle checked as soon as possible.
Driving extended distances with the
parking brake engaged can cause brake
failure and the risk of personal injury.
Note: Indicators vary depending on region.
This lamp is a dual function lamp and will
illuminate when:
• You apply the parking brake with the
ignition on.
• Your vehicle has a brake fault or low
brake fluid level, regardless of parking
brake position. If the lamp illuminates when you
are moving, you may have the
parking brake applied. Make sure
the parking brake is off. Have
your vehicle checked as soon as
possible if the lamp continues to
illuminate.
Cruise Control Indicator It illuminates when you switch
the system on.
See
Switching Cruise Control
On and Off (page 184). Direction Indicator It illuminates when the left or
right direction indicator or the
hazard warning flasher is turned
on. Flashes during operation. An increase
in the rate of flashing warns of a failed
indicator bulb.
Door Ajar Warning Lamp Displays when the ignition is on
and any door is not completely
closed.
Engine Coolant Temperature
Warning Lamp If it illuminates when your vehicle
is moving, this indicates that the
engine is overheating. Stop your
vehicle as soon as it is safe to do so and
switch the engine off. Have your vehicle
checked as soon as possible.
Fasten Seatbelt Warning Lamp It illuminates and a chime
sounds until you fasten the
seatbelts.
Front Fog Lamp Indicator (If Equipped) It illuminates when you switch
the front fog lamps on.
Heads Up Display
(If Equipped) A red beam of lights will
illuminate on the windshield in
certain instances when using
adaptive cruise control or the collision
warning system. It will also illuminate
momentarily when you start your vehicle
to make sure the display works.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Instrument ClusterE151262 E270480 E71340 E71880 E156133

Doors and Locks
Action
Message
The driver door is not completely closed.
Driver Door Ajar
The passenger door is not completely closed.
Passenger Door
Ajar
The trunk is not completely closed.
Trunk Ajar
The hood is not completely closed.
Hood Ajar
The system has disabled the door switches.
Switches Inhibited
Security Mode
Drive Control Action
Message
Indicates that one or more of the conditions required to change
drive modes has a fault. If issues persist see your authorized dealer.
Drive Mode Not
Available
Electronic Stability Control Action
Message
The system detects a malfunction due to a blocked sensor.
Service Advan-
ceTrac
The status of the system after you switch it off.
AdvanceTrac Off
The status of the system after you switch it on.
AdvanceTrac On
The system is in sport mode.
AdvanceTrac
SPORT MODE
Engine Action
Message
The engine is overheating and the power has been reduced to assistin lowering the temperature. Stop in a safe place as soon as it is possible.
Power Reduced to
Lower Engine Temp
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Information Displays

Note:
If programming a garage door opener
or gate operator, it is advised to unplug the
device during the “cycling” process to
prevent possible overheating.
PROGRAMMING THE GARAGE
DOOR OPENER TO YOUR
HAND-HELD TRANSMITTER
This process is to program your in-vehicle
HomeLink function button with your
hand-held transmitter.
Note: The programming steps below
assume you will be programming HomeLink
that was not previously programmed. If your
HomeLink was previously programmed, you
may need to erase your HomeLink buttons.
See Clearing the Garage Door Opener
(page 143). 1.
With your vehicle parked outside of the
garage, switch your ignition to the on
position, but do not start your vehicle.
2. Press and release one of the three HomeLink function buttons that you
would like to program.
3. Hold your hand-held garage door transmitter 1– 3 in (2–8 cm) away from
the HomeLink button you want to
program. 4. Press and hold the hand-held
transmitter button you want to
program while watching the indicator
light on HomeLink. Continue to hold
the hand-held button until the
HomeLink indicator light flashes rapidly
or is continuously on.
Note: You may need to use a different
method if you live in Canada or have
difficulties programming your gate operator
or garage door opener. See
Programming
the Garage Door Opener to Your Gate
Opener Motor
(page 143).
5. Press and hold the HomeLink button you programmed for two seconds, then
release. You may need to do this twice
to activate the door.
Note: If the indicator light stays on, the
programming is complete.
Note: If the HomeLink indicator flashes
rapidly, repeat step 5.
Note: If your device still does not operate,
you must program your garage door. See
Programming the Garage Door Opener to
Your Garage Door Opener Motor
(page
142).
6. To program additional buttons, repeat Steps 1 – 4.
PROGRAMMING THE GARAGE
DOOR OPENER TO YOUR
GARAGE DOOR OPENER
MOTOR 142
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Garage Door Opener
(If Equipped)E188212 E142659

1. Press the learn button on the garage
door opener motor, you have 30
seconds to complete the next two
steps.
2. Return to your vehicle. 3. Press and hold one of the three
HomeLink function buttons you want
to program for two seconds, then
release. Repeat this step. Depending
on your brand of garage door opener,
you may need to repeat this sequence
a third time.
PROGRAMMING THE GARAGE
DOOR OPENER TO YOUR GATE
OPENER MOTOR
Gate Operator / Canadian
Programming
Canadian radio-frequency laws require
transmitter signals to “time-out” (or quit)
after several seconds of transmission –
which may not be long enough for
HomeLink to pick up the signal during
programming. Similar to this Canadian law,
some U.S. gate operators “time-out” in the
same manner.
Note: If programming a garage door opener
or gate operator, it is advised to unplug the
device during the “cycling” process to
prevent possible overheating. 1. Press and release, every two seconds,
your hand-held transmitter until the
HomeLink indicator light changes to a
rapidly blinking or continuously on light.
2. Release the hand-held transmitter button.
3. Press and hold the HomeLink function
button you want to program for two
seconds, then release. You may need
to do this twice to activate the door.
Note: If the indicator light stays on, the
programming is complete.
Note: If the HomeLink indicator flashes
rapidly, repeat Step 3.
Note: If your device still does not operate,
you must program your garage door. See
Programming the Garage Door Opener to
Your Garage Door Opener Motor (page
142).
4. To program additional buttons, repeat Steps 1 – 4.
CLEARING THE GARAGE DOOR
OPENER 1. Press and hold the outer two function
buttons simultaneously for
approximately 10 seconds until the
indicator light above the buttons
flashes rapidly.
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(If Equipped)E188212 E188213

When you override the system,
the green indicator light
illuminates and the vehicle
image does not appear in the information
display.
The system resumes operation when you
release the accelerator pedal. The vehicle
speed decreases to the set speed, or a
lower speed if following a slower vehicle.
Changing the Set Speed
• Press SET+ or SET- to change the set
speed in small increments.
• Press the accelerator or brake pedal
until you reach the desired speed. Press
SET+
or SET-.
• Press and hold
SET+ or SET- to
change the set speed in large
increments. Release the control when
you reach the desired speed.
The system may apply the brakes to slow
the vehicle to the new set speed. The set
speed displays continuously in the
information display when the system is
active.
Canceling the Set Speed
Press
CNCL or tap the brake pedal. The
set speed does not erase.
Note: For vehicles with manual
transmission, if you press the clutch pedal
for an extended period, this action also
cancels the set speed.
Resuming the Set Speed
Note: Only use resume if you are aware of
the set speed and intend to return to it.
Press
RES. Your vehicle speed returns to
the previously set speed and gap setting.
The set speed displays continuously in the
information display when the system is
active. Automatic Cancellation
Note:
If the engine speed drops too low, an
audible warning sounds and a message
appears in the information display.
Automatic braking releases.
The system does not operate below
12 mph (20 km/h)
.
Hilly Condition Usage
Note: An audible alarm sounds and the
system shuts down if it applies brakes for
an extended period of time. This allows the
brakes to cool. The system functions
normally again after the brakes cool.
Select a lower gear when the system is
active in situations such as prolonged
downhill driving on steep grades, for
example in mountainous areas. The
system needs additional engine braking in
these situations to reduce the load on the
vehicle ’s regular brake system to prevent
it from overheating.
Switching Adaptive Cruise Control
Off
Note: You erase the set speed and gap
setting when you switch the system off.
Press
OFF when the system is in standby
mode, or switch the ignition off.
Detection Issues WARNING:
On rare occasions,
detection issues can occur due to the
road infrastructures, for example bridges,
tunnels and safety barriers. In these
cases, the system may brake late or
unexpectedly. At all times, you are
responsible for controlling your vehicle,
supervising the system and intervening,
if required.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Cruise ControlE144529

If your vehicle loses electrical power while
you are driving, electric power steering
assistance is lost. The steering system still
operates and you can steer your vehicle
manually. Manually steering your vehicle
requires more effort.
Extreme continuous steering may increase
the effort required for you to steer your
vehicle, this increased effort prevents
overheating and permanent damage to
the steering system. You do not lose the
ability to steer your vehicle manually.
Typical steering and driving maneuvers
allow the system to cool and return to
normal operation.
Steering Tips
If the steering wanders or pulls, check for:
•
Correct tire pressures.
• Uneven tire wear.
• Loose or worn suspension
components.
• Loose or worn steering components.
• Improper vehicle alignment.
Note: A high crown in the road or high
crosswinds may also make the steering
seem to wander or pull.
Adaptive Learning (If Equipped)
The electronic power steering system
adaptive learning helps correct road
irregularities and improves overall handling
and steering feel. It communicates with
the brake system to help operate
advanced stability control and accident
avoidance systems. Additionally, whenever
the battery is disconnected or a new
battery installed, you must drive your
vehicle a short distance before the system
relearns the strategy and reactivates all
systems. PRE-COLLISION ASSIST
(IF
EQUIPPED) WARNING:
You must remain in
your vehicle when the system turns on.
At all times, you are responsible for
controlling your vehicle, supervising the
system and intervening, if required.
Failure to take care may result in the loss
of control of your vehicle, serious
personal injury or death. WARNING:
The system does not
detect vehicles that are driving in a
different direction, cyclists or animals.
Apply the brakes when necessary. Failure
to follow this instruction could result in
the loss of control of your vehicle,
personal injury or death. WARNING:
The system does not
operate during hard acceleration or
steering. Failure to take care may lead
to a crash or personal injury. WARNING: The system may fail or
operate with reduced function during
cold and severe weather conditions.
Snow, ice, rain, spray and fog can
adversely affect the system. Keep the
front camera and radar free of snow and
ice. Failure to take care may result in the
loss of control of your vehicle, serious
personal injury or death. WARNING:
Some situations and
objects prevent hazard detection. For
example low or direct sunlight, inclement
weather, unconventional vehicle types,
and pedestrians. Apply the brakes when
necessary. Failure to follow this
instruction could result in the loss of
control of your vehicle, personal injury or
death.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Driving Aids

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.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Driving Hints

It is very important to use prediluted
coolant approved to the correct
specification in order to avoid plugging the
small passageways in the engine cooling
system. See Capacities and
Specifications (page 335). Do not mix
different colors or types of coolant in your
vehicle. Mixing of engine coolants or using
an incorrect coolant may harm the engine
or cooling system components and may
not be covered by the vehicle Warranty.
Note: If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with distilled water. See
Capacities and Specifications (page 335).
Using water that has not been deionised
may contribute to deposit formation,
corrosion and plugging of the small cooling
system passageways.
Note: Coolants marketed for all makes and
models may not be approved to our
specifications and may cause damage to
the cooling system. Resulting component
damage may not be covered by the vehicle
Warranty.
If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
To top up the coolant level do the
following:
1. Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
2. Add prediluted coolant approved to the correct specification. See
Capacities and Specifications (page
335
).
3. Add enough prediluted coolant to reach the correct level.
4. Replace the coolant reservoir cap. Turn
the cap clockwise until it contacts the
hard stop. 5. Check the coolant level in the coolant
reservoir the next few times you drive
your vehicle. If necessary, add enough
prediluted engine coolant to bring the
coolant level to the correct level.
If you have to add more than
1.1 qt (1 L) of
engine coolant per month, have your
vehicle checked as soon as possible.
Operating an engine with a low level of
coolant can result in engine overheating
and possible engine damage.
In case of emergency, you can add a large
amount of water without engine coolant
in order to reach a vehicle service location.
In this instance, qualified personnel:
1. Must drain the cooling system.
2. Chemically clean the coolant system.
3. Refill with engine coolant as soon as possible.
Water alone, without engine coolant, can
cause engine damage from corrosion,
overheating or freezing.
Do not use the following as a coolant
substitute:
• Alcohol.
• Methanol.
• Brine.
• Any coolant mixed with alcohol or
methanol antifreeze.
Alcohol and other liquids can cause engine
damage from overheating or freezing.
Do not add extra inhibitors or additives to
the coolant. These can be harmful and
compromise the corrosion protection of
the coolant.
Recycled Coolant
We do not recommend the use of recycled
coolant as an approved recycling process
is not yet available.
Note: Dispose of used coolant in the
appropriate manner.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Maintenance

high-speed operation, and may
completely shut down without warning,
potentially losing engine power, power
steering assist, and power brake assist,
which may increase the possibility of a
crash resulting in serious injury.
WARNING: Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap
with a thick cloth to prevent the
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury.
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely possible and switch the engine off.
2. If you are a member of a roadside assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait for a short period of time for the engine to cool.
4. Check the coolant level. If the coolant level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you can re-start the engine. Have your
vehicle checked as soon as possible to
minimize engine damage.
Note: Driving your vehicle without repair
increases the chance of engine damage. Engine Coolant Temperature
Management
(If Equipped) WARNING:
To reduce the risk of
crash and injury, be prepared that the
vehicle speed may reduce and the
vehicle may not be able to accelerate
with full power until the coolant
temperature reduces.
If you tow a trailer with your vehicle, the
engine may temporarily reach a higher
temperature during severe operating
conditions, for example ascending a long
or steep grade in high ambient
temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
You may notice a reduction in vehicle
speed caused by reduced engine power in
order to manage the engine coolant
temperature. Your vehicle may enter this
mode if certain high-temperature and
high-load conditions take place. The
amount of speed reduction depends on
vehicle loading, grade and ambient
temperature. If this occurs, there is no
need to stop your vehicle. You can
continue to drive.
The air conditioning may automatically
turn on and off during severe operating
conditions to protect the engine from
overheating. When the coolant
temperature decreases to the normal
operating temperature, the air conditioning
turns on.
If the coolant temperature gauge moves
fully into the red zone, or if the coolant
temperature warning or service engine
soon messages appear in your information
display, do the following:
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Maintenance