engine FORD MUSTANG 2021 Repair Manual

PRINCIPLE OF OPERATION
The traction control system helps avoid
drive wheel spin and loss of traction.
If your vehicle begins to slide, the system
applies the brakes to individual wheels
and, when needed, reduces engine power
at the same time. If the wheels spin when
accelerating on slippery or loose surfaces,
the system reduces engine power in order
to increase traction.
USING TRACTION CONTROL
WARNING: The stability and
traction control light illuminates steadily
if the system detects a failure. Make sure
you did not manually disable the traction
control system using the information
display controls or the switch. If the
stability control and traction control light
is still illuminating steadily, have the
system serviced by an authorized dealer
immediately. Operating your vehicle with
the traction control disabled could lead
to an increased risk of loss of vehicle
control, vehicle rollover, personal injury
and death.
The system automatically turns on each
time you switch the ignition on.
If your vehicle is stuck in mud or snow,
switching traction control off may be
beneficial as this allows the wheels to spin.
Note: When you switch traction control off,
stability control remains fully active.
Switching the System Off When you switch the system off,
a message and an illuminated
icon appear on the instrument
cluster. Use the switch again to return the traction
control system to normal operation.
The switch for the stability and traction
control system is on the instrument panel.
Your vehicle may have MyKey restrictions
regarding this feature. See
What Is
MyKey (page 63).
System Indicator Lights and
Messages The stability and traction control
light temporarily illuminates on
engine start-up and flashes:
• When a driving condition activates
either of the systems.
• If a problem occurs in either of the
systems. The stability and traction control
off light temporarily illuminates
on engine start-up and stays on:
• When you switch the traction control
system off.
• When you select an alternative stability
control mode.
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PRINCIPLE OF OPERATION
WARNING: Vehicle modifications
involving braking system, aftermarket
roof racks, suspension, steering system,
tire construction and wheel and tire size
may change the handling characteristics
of your vehicle and may adversely affect
the performance of the electronic
stability control system. In addition,
installing any stereo loudspeakers may
interfere with and adversely affect the
electronic stability control system. Install
any aftermarket stereo loudspeaker as
far as possible from the front center
console, the tunnel, and the front seats
in order to minimize the risk of interfering
with the electronic stability control
sensors. Reducing the effectiveness of
the electronic stability control system
could lead to an increased risk of loss of
vehicle control, vehicle rollover, personal
injury and death. WARNING:
Remember that even
advanced technology cannot defy the
laws of physics. It’ s always possible to
lose control of a vehicle due to
inappropriate driver input for the
conditions. Aggressive driving on any
road condition can cause you to lose
control of your vehicle increasing the risk
of personal injury or property damage.
Activation of the electronic stability
control system is an indication that at
least some of the tires have exceeded
their ability to grip the road; this could
reduce the operator ’s ability to control
the vehicle potentially resulting in a loss
of vehicle control, vehicle rollover,
personal injury and death. If your
electronic stability control system
activates, SLOW DOWN.
The system automatically turns on each
time you switch the ignition on. If a fault occurs in either the stability
control or the traction control system, you
may experience the following conditions:
•
The stability and traction control light
illuminates steadily.
• The stability control and traction
control systems do not enhance your
vehicle's ability to maintain traction of
the wheels.
If a driving condition activates either the
stability control or the traction control
system you may experience the following
conditions:
• The stability and traction control light
flashes.
• Your vehicle slows down.
• Reduced engine power.
• A vibration in the brake pedal.
• The brake pedal is stiffer than usual.
• If the driving condition is severe and
your foot is not on the brake, the brake
pedal may move as the system applies
higher brake force.
The stability control system has several
features built into it to help you maintain
control of your vehicle:
Electronic Stability Control
The system enhances your vehicle ’s ability
to prevent skids or lateral slides by
applying brakes to one or more of the
wheels individually and, if necessary,
reducing engine power.
Traction Control
The system enhances your vehicle ’s ability
to maintain traction of the wheels by
detecting and controlling wheel spin.
See
Using Traction Control (page 174).
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Stability Control

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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The system turns on when you start the
engine and you shift into reverse (R). The
system turns off when you shift out of
reverse (R).The sensor on the left-hand side is only
partially obstructed and zone coverage on
the right-hand side is maximized.
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button. The automatic transmission
holds lower gears and a higher RPM
when lifting off the accelerator. The
automatic transmission downshifts to
a higher RPM when braking
aggressively.
• Track – Provides a performance driving
experience. Throttle response
increases, and if your vehicle has active
exhaust, it takes on a more powerful
tone. A performance oriented traction
control mode is automatically utilized.
In this mode, traction control
intervention is reduced and tuned
specifically for track usage only. This
mode is not intended for public roads.
See Using Stability Control (page
176). If your vehicle has adaptive
dampers, the suspension is optimized
for transient handling maneuvers. This
mode offers maximum control and
confidence in handling on road courses
or auto-cross style events. Selectable
steering defaults to sport. Depending
on your vehicle configuration, you could
change the selectable steering setting
by pressing the steering button. The
automatic transmission holds lower
gears and a higher RPM and downshifts
more aggressively under braking than
in sport mode. •
Drag Strip - Provides a performance
driving experience tailored to driving
on a drag strip. The engine responds
directly to your inputs, and if your
vehicle has active exhaust, it takes on
a more powerful tone. This mode is not
intended for public roads. If your
vehicle has adaptive dampers, the
setting is optimized for straight line
maximum acceleration. Selectable
steering defaults to sport. Depending
on your vehicle configuration, you could
change the selectable steering setting
by pressing the steering button. The
automatic transmission is calibrated
to shift very aggressively to provide a
performance kick when driven at
maximum throttle.
• Snow/Wet - Provides a confident
handling driving experience during poor
weather. If your vehicle has adaptive
dampers, the suspension delivers a
balanced combination of comfort and
handling. Selectable steering defaults
to normal. Depending on your vehicle
configuration, you could change the
selectable steering setting by pressing
the steering button.
Using MyMode (If Equipped) You can use MyMode to create a unique
drive mode.
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To create or save MyMode, press the
button on the steering wheel and access
the menu. See General Information
(page 99). The available systems display.
Choose your desired settings using the
appropriate buttons and menus. Press and
hold OK to save your settings. MyMode is
added to the drive mode list and can be
selected the next time you drive your
vehicle.
Note: The system has diagnostic checks
that continuously monitor the system to
make sure it properly operates. If a mode is
unavailable due to a system fault or change
in gear position, the selected mode defaults
to normal.
Note: Pre-Collision Assist is automatically
disabled when track mode is selected.
See
Pre-Collision Assist (page 202).
Note: If your vehicle has adaptive dampers,
the steering setting is optimized to work with
each drive mode. Other steering settings
may not be available.
Selectable Steering Press the steering button on the
instrument panel to change the
steering feel. The first press
illuminates the selected mode. Each time
you press the button, it changes the mode.
Modes:
• Normal - Default factory setting.
• Sport - Slightly higher effort required
for steering with more road force felt
through the steering wheel.
• Comfort - Slightly less effort required
for steering with less road force felt
through the steering wheel.
Note: A soft feedback bump in the steering
wheel may be felt after you make a
selection. Note:
The steering setting defaults to
normal if the battery is disconnected or
removed.
Active Exhaust
(If Equipped) Use the information display to
adjust the tone of the exhaust.
Active Exhaust modes:
• Quiet - Lowers the noise of the exhaust.
• Normal - Default factory setting.
• Sport - Raises the noise of the exhaust.
• Track - Tunes the exhaust for track
performance.
Note: The track exhaust mode setting is
only for use at tracks and not for use on
public roadways. Use of this setting results
in increased exterior noise, which may not
meet state and local laws and regulations.
It is the obligation of the driver to operate
the vehicle in a manner that complies with
state and local requirements. Only use the
track exhaust mode setting at a competition
track or an off-road course where elevated
exterior vehicle noise is acceptable.
Rev Match
(If Equipped)
This feature provides a smoother driving
experience, particularly during a downshift
event. This is accomplished by a shift
position prediction that commands a quick
engine RPM match to the selected gear.
You can switch this feature on and off
through the information display. See
General Information
(page 99).
Note: The system remembers your last
selection through ignition cycles.
Note: Rev match is only available with a
manual transmission.
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No Lift Shift
This feature provides you with the ability
to keep the accelerator pedal firmly
pressed down during high engine speed,
wide open throttle accelerations. During
wide open throttle gear shifts, the engine
controller prevents the engine speed from
flaring with the clutch disengaged during
a rapid upshift. This allows reduced
manual transmission upshift time, resulting
in quicker acceleration and smoother no
lift shifts.
DRIVE CONTROL (IF EQUIPPED)
Selectable Drive Modes
(If Equipped)
Selectable drive modes deliver a
customized driving experience using a
variety of electronic vehicle systems. The
systems optimize vehicle dynamics and
powertrain response based on your
selected mode. Systems associated with
selectable drive modes are:
• Electronically power assisted steering.
See
Steering (page 201).
• Electronic stability control and traction
control maintain your vehicle control
in adverse conditions or high
performance driving.
See Stability
Control (page 175).
• Electronic throttle control enhances
the powertrain response to your driving
input.
• Adaptive dampers (if equipped).
• Active exhaust adjusts the sound
characteristics of your vehicle (if
equipped).
Using Selectable Drive Modes
Note: Your vehicle may have some of the
drive modes that follow. To change the drive mode setting, press
the mode button on the instrument panel
under the display. The first press
illuminates the selected mode, subsequent
presses change the selected mode.
Note:
Mode changes are not available when
the ignition is off or when the transmission
is in reverse (R). Some modes may be
unavailable when the transmission is in drive
(D) or sport (S).
Modes:
• Normal – Best suited for everyday
driving. If your vehicle has adaptive
dampers, the suspension delivers a
balanced combination of comfort and
handling. Selectable steering defaults
to normal but can be changed using
the steering button.
• Sport – Engages when you shift your
automatic transmission into sport (S).
Sport mode increases throttle
response and helps your vehicle
accelerate faster, but does not change
the vehicle dynamics or stability
system.
• Sport+ – Best suited for spirited driving.
This mode increases throttle response,
and if your vehicle has active exhaust,
it takes on a more powerful tone. If your
vehicle has adaptive dampers, the
suspension becomes stiffer, body
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motion reduces and the steering
becomes more precise. Selectable
steering defaults to sport. Depending
on vehicle configuration, you may be
able to change the selectable steering
setting by pressing the steering button.
• Track – Provides a performance driving
experience. Throttle response
increases, and if your vehicle has active
exhaust, it takes on a more powerful
tone. A performance oriented traction
control mode is automatically utilized.
In this mode, traction control
intervention is reduced and tuned
specifically for track usage only. This
mode is not intended for public roads.
See Using Stability Control (page
176). If your vehicle is equipped with
adaptive dampers, the suspension is
optimized for transient handling
maneuvers. This mode offers
maximum control and confidence in
handling on road courses or auto-cross
style events. Selectable steering
defaults to sport. Depending on vehicle
configuration, you could change the
selectable steering setting by pressing
the steering button. •
Drag Strip - Provides a performance
driving experience tailored to driving
on a drag strip. The engine responds
directly to your inputs, and if your
vehicle has active exhaust, it takes on
a more powerful tone. This mode is not
intended for public roads. If your
vehicle has adaptive dampers, the
setting is optimized for straight line
maximum acceleration. Selectable
steering defaults to sport. Depending
on vehicle configuration, you could
change the selectable steering setting
by pressing the steering button.
• Snow/Wet - Provides a confident
handling driving experience during poor
weather. If your vehicle has adaptive
dampers, the suspension delivers a
balanced combination of comfort and
handling. Selectable steering defaults
to normal. Depending on vehicle
configuration, you could change the
selectable steering setting by pressing
the steering button.
Using MyMode (If Equipped) You can use MyMode to create a unique
drive mode.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Driving AidsE294774

Rev Match (If Equipped)
This feature provides a smoother driving
experience, particularly during a downshift
event. This is accomplished by a shift
position prediction that commands a quick
engine RPM match to the selected gear.
You can switch this feature on and off
through the information display. See
General Information
(page 99).
Note: The system remembers your last
selection through ignition cycles.
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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

TOWING A TRAILER - MACH 1
WARNING: Your vehicle is
not approved for trailer towing.
Never tow a trailer with your
vehicle.
TOWING A TRAILER WARNING:
Do not exceed
the GVWR or the GAWR
specified on the certification
label. WARNING:
Towing trailers
beyond the maximum
recommended gross trailer
weight exceeds the limit of your
vehicle and could result in engine
damage, transmission damage,
structural damage, loss of
vehicle control, vehicle rollover
and personal injury.
Note: There may be electrical
items such as fuses or relays that
can affect trailer towing operation.
See
Fuses (page 245).
The load capacity of your vehicle
is designated by weight not
volume. You may not necessarily
be able to use all available space
when loading your vehicle or
trailer. Towing a trailer places extra load
on the engine, transmission, axle,
brakes, tires, and suspension.
Inspect these components before,
during and after towing.
Load Placement
To help minimize how trailer
movement affects the vehicle
when driving:
•
Load the heaviest items closest
to the trailer floor.
• Load the heaviest items in the
center of the left and right side
trailer tires.
• Load the heaviest items above
the trailer axles or just slightly
forward toward the trailer
tongue. Do not allow the final
trailer tongue weight to go
above or below 10-15% of the
loaded trailer weight.
• Select a ball mount with the
correct rise or drop. When both
the loaded vehicle and trailer
are connected, the trailer frame
should be level, or slightly
angled down toward the
vehicle, when viewed from the
side.
When driving with a trailer or
payload, a slight takeoff vibration
or shudder may be present due to
the increased payload weight.
Additional information regarding
proper trailer loading and setting
your vehicle up for towing is
located in the Load Carrying
chapter. See
Load Limit (page
213).
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Towing