FORD MUSTANG 2021 Owners Manual

Line Lock
Line lock is a feature intended for use at
tracks only and should not be used on
public roadways. Use of this feature may
result in significantly increased rear tire
wear. It is intended to condition the rear
tires to maximize traction prior to track use.
Line lock maintains brake force at the front
wheels, allowing the rear wheels to spin
with minimal vehicle movement.
This feature is located in the Track Apps
menu. Make selections through the 5-way
information display control and OK button
located on the steering wheel.
Using Line Lock
There are three line lock stages:
•
Initiated.
• Engaged.
• Off.
Initiating Line Lock
The initiation stage verifies that the vehicle
is ready for line lock function, and confirms
driver intent. Follow the prompts in the
information display to initiate line lock.
The following conditions must be met to
initialize line lock:
• The vehicle is on a level surface.
• The engine is running.
• The vehicle is traveling less than
25 mph (40 km/h).
• Selectable drive mode is not in wet
mode (if equipped).
• There are no electronic stability control
faults. If you want to cancel line lock once it is
initialized, press the left information
display control. Once initiated, line lock is
prepared for activation and remains
initiated up to 25 mph (40 km/h). If vehicle
speed exceeds 25 mph (40 km/h), line lock
automatically cancels.
Engaging Line Lock
Follow the prompts in the information
display to engage line lock after it is
initialized. To engage, firmly apply the
brakes. Then press the OK button. Once
engaged, release the brake pedal. The
front brakes remain applied and the rear
brakes release. At this point, the
engagement timer is initiated and shown
on the driver information display.
The following conditions must be met to
engage line lock:
•
The vehicle is on a level surface.
• The engine is running.
• The vehicle is stopped.
• The parking brake is not applied.
• The driver door is closed.
• The transmission is in a forward gear.
• Selectable drive mode is not in wet
mode (if equipped).
• There are no electronic stability control
faults.
• The steering wheel must be in the
straight ahead position.
Releasing Line Lock
While line lock is engaged, you can exit
(release) the feature using the OK button.
When you press the OK button, line lock
releases immediately and normal vehicle
function resumes. When line lock engages,
a countdown timer shows the remaining
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

time before line lock is released
automatically. If you exceed the time limit,
or another vehicle condition requires line
lock to release, the system safely
disengages and normal vehicle function
resumes.
Note:
If you apply the brake pedal while
line lock is engaged, line lock automatically
cancels and normal brake function resumes.
Performance Shift Indicator
The performance shift indicator displays
a row of colored lights that represent
engine RPM.
The performance shift indicator menu
allows you to:
• Choose whether the indicator is shown
on the windshield or information
display.
• Set a shift point within the allowable
RPM range in increments of 100.
• Enable or disable the associated shift
tone, based on the set shift point.
• Set the between off, change with drive
mode, tach, track and drag.
• Set the light intensity. The intensity
adjusts between day time and night
time. Start Option
Allows you to select the type of countdown
the information display shows before
starting an event.
Status Screen
Provides the status of your chosen
performance-related settings.
View/Clear Results
Allows you to view and clear the last and
saved results of the Acceleration Timer,
Brake Performance, and All Time Best
results.
Road Course Alignment
Recommendations
Note:
After your track day is complete,
return your car to the street alignment and
tire pressures.
Note: Using these wheel alignment settings
may cause excessive tire wear. Only use
these settings for racing or competitive
driving. Excessive tire wear is not covered
under the vehicle warranty.
If you plan to participate in road course
track days, we recommend the following
chassis settings for optimal tire wear and
handling performance.
All settings are at curb loading condition
full of fuel.
Mach 1 Street
Track
Front
-1.03°
-1.5°
Camber
0°
0°
Toe - Total
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

Street
Track
Rear
-1.5°
-1.5°
Camber
0.24°
0.24°
Toe - Total
Mach 1 with Handling Package Street
Track
Front
-1.21°
-2.25°
Camber
0.1°
0.1°
Toe - Total Street
Track
Rear
-1.14°
-1.5°
Camber
0.3°
0.3°
Toe - Total
Track Tire Pressures
Cold Tire Pressures Rear
Front
Tire Pressure
30 psi (2.07 bar)
30 psi (2.07 bar)
Mach 1
28 psi (1.93 bar)
28 psi (1.93 bar)
Mach 1 with Handling
Package
Hot Tire Pressures Rear
Front
Tire Pressure
Less than 38 psi (2.62 bar)
Less than 38 psi (2.62 bar)
Mach 1
Less than
36 psi (2.48 bar)
Less than 36 psi (2.48 bar)
Mach 1 with Handling
Package
Track Use Maintenance Intervals
Follow these maintenance intervals for
when you use your vehicle on a track or in
a high-speed event. 280
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

Vehicle Use and Example
Interval
Change the engine oil and filter
One track weekend or approximately 4
hours of track use
Change the rear axle fluid1
Every 500 mi (800 km)
1 Change the fluid every 500 mi (800 km) or when a message appears in the information
display stating that the axle fluid is over temperature.
Adjustable Camber Front Strut
Top Mounts (vehicles with
Optional Handling Package)
Your vehicle has adjustable strut mounts
which you can use to adjust the camber of
your vehicle before and after a track event
to the specifications listed in the Road
Course Alignment Recommendations table
previously shown.
Note: After your track day is complete,
return your car to the street alignment and
tire pressures. Note:
The adjustable camber front strut
mounts are fitted with three set screws that
must be removed before camber can be
adjusted. If you cannot adjust the camber,
please see your authorized dealer or call
800– 367–3788 for more details to remove
the set screws. Aerodynamics
(If Equipped)
Rear Gurney Flap The rear Gurney flap must be removed
for on-road driving.
Your vehicle may include a removable
Gurney flap in the luggage compartment.
The Gurney flap greatly enhances high
speed stability and performance on the
track. It is recommended that you use the
Gurney flap at all tracks featuring high
speed corners and can be used at any track
regardless of cornering speeds.
You could benefit from the removal Gurney
flap to improve low speed balance on
smaller tracks with maximum cornering
speeds below
70 mph (112 km/h). We
recommend that you attach the Gurney
flap for all track events and carefully
assess both the vehicle's condition and
your capability before removal.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track UseE343597 E307008

Note:
The Gurney flap comes with longer
size bolts to install it onto the rear spoiler.
Do not use the longer size bolts without
the Gurney flap attached or damage to
the spoiler may occur.
Brake Burnishing
The brakes should be properly burnished
prior to heavy track use. Excessive brake
noise may occur after the track burnish or
track use. Perform this procedure in a safe
manner on dry pavement, and in
compliance with all local and state
ordinances and laws regarding motor
vehicle operation. How to Burnish the Brakes
Initial low temperature bedding:
•
If your brakes already have 200 mi
(322 km) or more of city driving, skip
this step and go directly to the high
temperature bedding cycle procedure.
Otherwise, perform at least 30 stops
from
50 mph (80 km/h) at 1/3 g
deceleration with 1 mi (1.2 km) spacing
between stops. A deceleration gauge
can be accessed through the
TrackApps menu in your information
display.
High temperature bedding cycle:
• Beginning with cool brakes, perform 15
consecutive stops back to back,
accelerating at 3/4 throttle to
80 mph
(128 km/h) and braking to 20 mph
(32 km/h) at 1.0 g deceleration. The
brakes may omit an odor or smoke
during this part of the procedure.
Cool down:
• Cool the brakes down by driving one or
two laps, 5 mi (8 km)
, at 60 mph
(96 km/h) with minimal to no brake
usage.
Recovery low temperature bedding:
• Perform at least 30 stops from 50 mph
(80 km/h)
at 1/3 g deceleration with
0.7 mi (1.2 km) spacing between stops.
A deceleration gauge can be accessed
through the TrackApps menu in your
information display.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track UseE310471 E310472

TRACK USE
Appropriately change the engine oil for
racing and other track events:
•
2.3L: Prior to the track event, drain the
engine oil, replace the oil filter and
change the engine oil to 5W-50. After
the track event, drain the engine oil,
replace the oil filter and refill the engine
oil with 5W-30. See Capacities and
Specifications (page 343).
• 5.0L: Prior to the track event, drain the
engine oil, replace the oil filter and
change the engine oil to 5W-30. After
the track event, drain the engine oil,
replace the oil filter and refill the engine
oil with 5W-20.
See Capacities and
Specifications (page 343).
Regularly check the engine oil level during
the event. Maintain the engine oil level at
or near the max mark on the engine oil
dipstick. See Engine Oil Check (page 261).
Operating at High Speeds and
Track Days
Your vehicle is capable of sustained high
speeds and track day driving.
Before operating your vehicle at high
speeds:
• Verify your tires have the correct
pressures.
• Inspect wheels and tires for wear and
damage. Replace any damaged wheels
and tires.
• Check and set lug nut torque. See
Technical Specifications
(page 334).
• Verify fluid levels for oil, coolant, brake
and hydraulic fluid. See
Capacities
and Specifications (page 335).
• Change the oil and filter prior to use on
the track. After operating your vehicle at high speeds
or track day driving, do the following:
•
Set the tire pressure to the proper
specification.
• Check and set the lug nut torque. See
Technical Specifications
(page 334).
• Check all fluid levels.
• Refer to the track maintenance interval
chart. See
Normal Scheduled
Maintenance (page 444).
• Check the front and rear wheel
bearings for abnormal wear.
• Inspect brake caliper dust boots for
abnormal wear.
Track Apps WARNING:
Track Apps™
is for
track use only. Remember that even
advanced technology cannot defy the
laws of physics. It is 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.
This information display driven feature
provides a suite of menu options to record
and optimize your track performances.
See
General Information (page 99).
Note: Track Apps are for track use only. Do
not use them under any other driving
conditions.
Note: You cannot view or clear your results
unless your vehicle is at a complete stop
with the right arrow on the display menu
inactive. If your vehicle does not reach
100 mph (160 km/h)
during the track run,
your display may not show your selected
interval's results.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

Note:
The pre-collision assist system turns
off when using Track Apps or when you
switch off your stability control system.
Acceleration Timer
Displays your vehicle's rate of acceleration
for a given speed or distance range.
Accelerometer
Displays your vehicle's rate of acceleration
or deceleration. A dot moves toward the
area of acceleration or deceleration.
LEFT Acceleration or Deceleration
When accelerating or decelerating left, the
dot moves to the right on the
accelerometer.
RIGHT Acceleration or Deceleration
When accelerating or decelerating right,
the dot moves to the left on the
accelerometer.
Brake Performance
Displays your vehicle's rate of deceleration
for a given speed range.
Exhaust Mode
Gives the driver the ability to choose the
vehicle's exhaust mode.
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. Lap Timer
Gives you the ability to record lap times at
three separate tracks.
Launch Control (If Equipped)
Maximizes your vehicle's traction from a
standing start.
Follow these steps to use launch control:
1. Bring your vehicle to a complete stop.
2. Make sure launch control is enabled. The indicator illuminates in the
instrument display when launch control
is enabled.
See Warning Lamps and
Indicators (page 94).
3. Fully press the clutch pedal.
4. Shift the transmission into first gear.
5. Fully depress the accelerator pedal and
allow the engine RPM to stabilize.
6. Release the clutch pedal.
Line Lock
Line lock is a feature intended for use at
tracks only and should not be used on
public roadways. Use of this feature may
result in significantly increased rear tire
wear. It is intended to condition the rear
tires to maximize traction prior to track use.
Line lock maintains brake force at the front
wheels, allowing the rear wheels to spin
with minimal vehicle movement.
This feature is located in the Track Apps
menu. Make selections through the 5-way
information display control and OK button
located on the steering wheel.
Using Line Lock
There are three line lock stages:
• Initiated.
• Engaged.
• Off.
284
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

Initiating Line Lock
The initiation stage verifies that the vehicle
is ready for line lock function, and confirms
driver intent. Follow the prompts in the
information display to initiate line lock.
The following conditions must be met to
initialize line lock:
•
The vehicle is on a level surface.
• The engine is running.
• The vehicle is traveling less than
25 mph (40 km/h).
• Selectable drive mode is not in wet
mode (if equipped).
• There are no electronic stability control
faults.
If you want to cancel line lock once it is
initialized, press the left information
display control. Once initiated, line lock is
prepared for activation and remains
initiated up to 25 mph (40 km/h). If vehicle
speed exceeds 25 mph (40 km/h), line lock
automatically cancels.
Engaging Line Lock
Follow the prompts in the information
display to engage line lock after it is
initialized. To engage, firmly apply the
brakes. Then press the OK button. Once
engaged, release the brake pedal. The
front brakes remain applied and the rear
brakes release. At this point, the
engagement timer is initiated and shown
on the driver information display.
The following conditions must be met to
engage line lock:
• The vehicle is on a level surface.
• The engine is running.
• The vehicle is stopped.
• The parking brake is not applied.
• The driver door is closed.
• The transmission is in a forward gear. •
Selectable drive mode is not in wet
mode (if equipped).
• There are no electronic stability control
faults.
• The steering wheel must be in the
straight ahead position.
Releasing Line Lock
While line lock is engaged, you can exit
(release) the feature using the OK button.
When you press the OK button, line lock
releases immediately and normal vehicle
function resumes. When line lock engages,
a countdown timer shows the remaining
time before line lock is released
automatically. If you exceed the time limit,
or another vehicle condition requires line
lock to release, the system safely
disengages and normal vehicle function
resumes.
Note: If you apply the brake pedal while
line lock is engaged, line lock automatically
cancels and normal brake function resumes.
Performance Shift Indicator
The performance shift indicator displays
a row of colored lights that represent
engine RPM.
The performance shift indicator menu
allows you to:
• Choose whether the indicator is shown
on the windshield or information
display.
• Set a shift point within the allowable
RPM range in increments of 100.
• Enable or disable the associated shift
tone, based on the set shift point.
• Set the between off, change with drive
mode, tach, track and drag.
• Set the light intensity. The intensity
adjusts between day time and night
time.
285
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

Start Option
Allows you to select the type of countdown
the information display shows before
starting an event.
Status Screen
Provides the status of your chosen
performance-related settings.
View/Clear Results
Allows you to view and clear the last and
saved results of the Acceleration Timer,
Brake Performance, and All Time Best
results.
Track Use Maintenance Intervals
Follow these maintenance intervals for
when you use your vehicle on a track or in
a high speed event. Vehicle Use and Example
Interval
Change the engine oil and filter
One track weekend or approximately 4
hours of track use
Change the rear axle fluid
Every 500 mi (800 km) 1
1 Change the fluid every 500 mi (800 km) or when a message appears in the information
display stating that the axle fluid is over temperature.
Timing Chain
If you use your vehicle extensively at a race
track or at high rpm, it is possible to exceed
the service life of the engine timing chain.
A wrench indicator light illuminates when
it is time for you to replace your chain.
Have your vehicle checked as soon as
possible.
Adjustable Camber Front Strut
Top Mounts
(If Equipped)
Your vehicle has adjustable strut mounts
which you can use to adjust the camber of
your vehicle before and after a track event
to the specifications listed in the Road
Course Alignment Recommendations table
previously shown.
Note: After your track day is complete,
return your car to the street alignment and
tire pressures. Aerodynamics
(If Equipped)
Adjustable Rear Wing
The rear wing generates aerodynamic
down-force at speeds greater than 50 mph
(80 km/h)
.
Regularly inspect the rear wing panel and
attachment points for damage or
looseness.
You can adjust the wing using the hole
pattern at the top of the stanchion.
Moving the wing up increases rear down
force and overall understeer. Moving the
wing down decreases the rear down force
and overall understeer.
286
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track Use

Rear Gurney Flap
The rear Gurney flap must be removed
for on-road driving.
Your vehicle may include a removable
Gurney flap in the luggage compartment.
The Gurney flap greatly enhances high
speed stability and performance on the
track. It is recommended that you use the
Gurney flap at all tracks featuring high
speed corners and can be used at any track
regardless of cornering speeds.
You could benefit from the removal Gurney
flap to improve low speed balance on
smaller tracks with maximum cornering
speeds below 70 mph (112 km/h). We
recommend that you attach the Gurney
flap for all track events and carefully
assess both the vehicle's condition and
your capability before removal. Note:
The Gurney flap comes with longer
size bolts to install it onto the rear spoiler.
Do not use the longer size bolts without
the Gurney flap attached or damage to
the spoiler may occur.
Catch Can
If you plan to track your vehicle and it did
not come with an oil catch can, we
recommend that you purchase the catch
can kit though your authorized dealer or
Ford Performance Parts Catalog.
Installation instructions are included with
the catch can.
The catch can has a self-draining feature
and does not require any maintenance.
Brake Burnishing
The brakes should be properly burnished
prior to heavy track use. Excessive brake
noise may occur after the track burnish or
track use. Perform this procedure in a safe
manner on dry pavement, and in
compliance with all local and state
ordinances and laws regarding motor
vehicle operation.
287
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Track UseE307008 E310471 E310472