ignition FORD MUSTANG 2021 Repair Manual

To close the convertible top:
1. Bring the vehicle to a complete stop
and make sure you switch the ignition
on. We recommend that the vehicle
remains running when you open the
top to prevent draining the battery.
2. Press and hold the convertible top control. When the convertible latch
handle is within reach, make sure it is
down and that you rotate it clockwise
so the latch is in the fully opened
position. Continue pressing the
convertible top control until the
windows lower completely, and the
top unfolds and moves forward toward
the windshield header.
3. When the top lines up evenly with the windshield header, release the
convertible top control. The final step when closing the convertible
top is to lock the latch.
To lock the latch on the convertible top:
1. Pull down on the latch handle and
rotate it counter-clockwise to secure
the convertible top.
2. After securing the convertible top fully,
push the latch handle up into the
stowed position to secure the latch. Note:
If you keep the top open for an
extended period of time or if the
temperature is low, the top material may
shrink slightly. If this happens, pull on the
latch handle to secure the top.
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Vehicles Sold in Canada: Getting
Roadside Assistance
To fully assist you should you have a
vehicle concern, Ford Motor Company of
Canada, Limited offers a complimentary
roadside assistance program. This program
is eligible within Canada or the continental
United States.
The service is available 24 hours a day,
seven days a week.
This program is separate from the New
Vehicle Limited Warranty, but the coverage
is concurrent with the powertrain coverage
period of your vehicle. Canadian roadside
coverage and benefits may differ from the
U.S. coverage.
If you require more information, please call
us in Canada at 1-800-665-2006, or visit
our website at www.ford.ca.
HAZARD FLASHERS
Note:
The hazard flashers operate when
the ignition is in any position, or if the key is
not in the ignition. If used when the vehicle
is not running, the battery loses charge. As
a result, there may be insufficient power to
restart your vehicle. The flasher control is on the
instrument panel. Use your
hazard flashers when your
vehicle is creating a safety hazard for other
motorists.
• Press the flasher control and all front
and rear direction indicators flash.
• Press the button again to switch them
off. FUEL SHUTOFF WARNING: If your vehicle has been
involved in a crash, have the fuel system
checked. Failure to follow this instruction
could result in fire, personal injury or
death.
Note: When you try to restart your vehicle
after a fuel shutoff, the vehicle makes sure
that various systems are safe to restart.
Once the vehicle determines the systems
are safe, then the vehicle allows you to
restart.
Note: In the event that your vehicle does
not restart after your third attempt, contact
a qualified technician.
The fuel pump shutoff stops the flow of
fuel to the engine in the event of a
moderate to severe crash. Not every
impact causes a shutoff.
Should your vehicle shut off after a crash,
you may restart your vehicle.
1. Press START/STOP to switch off your
vehicle.
2. Press the brake pedal and START/STOP
to switch on your
vehicle.
3. Remove your foot from the brake pedal
and press
START/STOP to switch off
your vehicle.
4. You can attempt to start the vehicle by pressing the brake pedal and
START/STOP
, or press START/STOP
without pressing the brake pedal.
5. If the vehicle does not start, repeat steps 1 through 4.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Roadside Emergencies

WARNING: This vehicle may have
more than one battery. Removing the
battery cables from only one battery
does not disconnect your vehicle
electrical system. Make sure you
disconnect the battery cables from all
batteries when disconnecting power.
Failure to do so may cause serious
personal injury or property damage. WARNING:
For vehicles with
Auto-Start-Stop the battery requirement
is different. You must replace the battery
with one of exactly the same
specification.
The battery is in the engine compartment.
See
Under Hood Overview (page 258).
Your vehicle has a maintenance-free
battery. It does not require additional
water during service.
If the vehicle battery has a cover and vent
hose, make sure you correctly install it after
cleaning or replacing the battery.
For longer, trouble-free operation, keep the
top of the battery clean and dry and the
battery cables tightly fastened to the
battery terminals. If any corrosion is
present on the battery or terminals, remove
the cables from the terminals and clean
with a wire brush. You can neutralize the
acid with a solution of baking soda and
water.
We recommend that you disconnect the
negative battery cable terminal from the
battery if you plan to store your vehicle for
an extended period.
Note: If you only disconnect the negative
battery cable terminal, make sure it is
isolated or placed away from the battery
terminal to avoid unintended connection or
arcing. If you replace the battery make sure it
matches the electrical requirements of
your vehicle.
If you disconnect or replace the battery
and your vehicle has an automatic
transmission, it must relearn its adaptive
strategy. Because of this, the transmission
may shift firmly when first driven. This is
normal operation while the transmission
fully updates its operation to optimum
shift feel.
Battery Management System
(If
Equipped)
The battery management system monitors
battery conditions and takes actions to
extend battery life. If excessive battery
drain is detected, the system temporarily
disables some electrical systems to
protect the battery.
Systems included are:
• Heated rear window.
• Heated seats.
• Climate control.
• Heated steering wheel.
• Audio unit.
• Navigation system.
A message may appear in the information
displays to alert you that battery
protection actions are active. These
messages are only for notification that an
action is taking place, and not intended to
indicate an electrical problem or that the
battery requires replacement.
After battery replacement, or in some
cases after charging the battery with an
external charger, the battery management
system requires eight hours of vehicle sleep
time to relearn the battery state of charge.
During this time your vehicle must remain
fully locked with the ignition switched off.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Maintenance

Note:
Prior to relearning the battery state
of charge, the battery management system
may temporarily disable some electrical
systems.
Electrical Accessory Installation
To make sure the battery management
system works correctly, do not connect an
electrical device ground connection
directly to the battery negative post. This
can cause inaccurate measurements of
the battery condition and potential
incorrect system operation.
Note: If you add electrical accessories or
components to the vehicle, it may adversely
affect battery performance and durability.
This may also affect the performance of
other electrical systems in the vehicle.
Remove and Reinstall the Battery
To disconnect or remove the battery, do
the following:
1. Apply the parking brake and switch the
ignition off.
2. Switch all electrical equipment off, for
example lights and radio.
3. Wait a minimum of two minutes before
disconnecting the battery.
Note: The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow diagnostic and
adaptive tables to be stored. Disconnecting
the battery without waiting can cause
damage not covered by the vehicle
Warranty.
4. Disconnect the negative battery cable terminal.
5. Disconnect the positive battery cable terminal.
6. Remove the battery securing clamp.
7. Remove the battery. 8. To install, reverse the removal
procedure.
Note: Before reconnecting the battery,
make sure the ignition remains switched off.
Note: Make sure the battery cable terminals
are fully tightened.
If you disconnect or replace the vehicle
battery, you must reset the following
features:
• Window bounce-back. See Power
Windows (page 86).
• Clock Settings.
• Pre-set radio stations.
Battery Disposal Make sure that you dispose of
old batteries in an
environmentally friendly way.
Seek advice from your local authority
about recycling old batteries.
ADJUSTING THE HEADLAMPS
Vertical Aim Adjustment
The headlamps on your vehicle are
properly aimed at the assembly plant. If
your vehicle has been in an accident, have
the alignment of your headlamps checked
by an authorized dealer.
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WAXING
Regular waxing is necessary to protect your
car's paint from the elements. We
recommend that you wash and wax the
painted surface once or twice a year.
When washing and waxing, park your
vehicle in a shaded area out of direct
sunlight. Always wash your vehicle before
applying wax.
•
Use a quality wax that does not contain
abrasives.
• Follow the manufacturer ’s instructions
to apply and remove the wax.
• Apply a small amount of wax in a
back-and-forth motion, not in circles.
• Do not allow wax to come in contact
with any non-body (low-gloss black)
colored trim. The wax will discolor or
stain the parts over time.
•Roof racks.
• Bumpers.
• Grained door handles.
• Side moldings.
• Mirror housings.
• Windshield cowl area.
• Do not apply wax to glass areas.
• After waxing, your car's paint should
feel smooth, and be free of streaks and
smudges.
CLEANING THE ENGINE -
MACH 1
Note: Do not allow water or cleaning
solutions to contact the exposed air filter
element. Cover the air filter assembly and
avoid spraying water at it. CLEANING THE ENGINE
Engines are more efficient when they are
clean because grease and dirt buildup keep
the engine warmer than normal.
When washing:
•
Take care when using a power washer
to clean the engine. The high-pressure
fluid could penetrate the sealed parts
and cause damage.
• Do not spray a hot engine with cold
water to avoid cracking the engine
block or other engine components.
• Spray Motorcraft Engine Shampoo and
Degreaser on all parts that require
cleaning and pressure rinse clean. In
Canada, use Motorcraft Engine
Shampoo.
Note: If your vehicle has an engine cover
remove the cover before application of
Motorcraft Engine Shampoo and Degreaser.
Immediately rinse away any over spray.
• Never wash or rinse the engine while it
is hot or running; water in the running
engine may cause internal damage.
• Never wash or rinse any ignition coil,
spark plug wire or spark plug well, or
the area in and around these locations.
• Cover the battery, power distribution
box, and air filter assembly to prevent
water damage when cleaning the
engine.
Note: Do not allow water or cleaning
solutions to contact the exposed air filter
element. Cover the air filter assembly and
avoid spraying water at it.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Vehicle Care

ENGINE SPECIFICATIONS - 2.3L ECOBOOST™
Specification
Measurement
138 in³ (2,261 cm³)
Engine Displacement.
1-3-4-2
Firing order.
Coil on plug
Ignition system.
0.028 in (0.7 mm) - 0.031 in (0.8 mm)
Spark plug gap.
9.5:1
Compression ratio - Base.
9.37:1
Compression ratio - High Output.
Drivebelt Routing ENGINE SPECIFICATIONS - 5.0L, MACH 1
Description
Item
90 degree V8.
Configuration.
3.66 in (93 mm)
bore x 3.65 in (92.7 mm)
stroke.
Bore x stroke.
307 in³ (5,038 cm³)
Displacement.
12.0:1
Compression ratio.
0.049 in (1.25 mm)
- 0.053 in (1.35 mm)
Spark plug gap.
480 hp (358 kW)
@ 7000 RPM
Horsepower.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Capacities and SpecificationsE170434

Description
Item
420 lb.ft (569 Nm) @ 4600 RPM
Torque.
7500 RPM
Redline.
168 mph (270 km/h)
Top speed with manual transmission
without gurney flap.
155 mph (249 km/h)
Electronically limited.
Top speed with automatic transmission.
Dual overhead cams - roller fingerfollowers.
Valvetrain.
Coil on plug.
Ignition.
3.4 in (87 mm)
Throttle body.
Cast aluminum.
Pistons.
Forged steel cross-plane.
Crankshaft.
Forged steel.
Connecting rods.
Naturally aspirated cold air induction.
Induction.
High-flow dual exhaust with H-pipe andactive valve mufflers.
Exhaust system.
Drivebelt Routing 336
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Capacities and SpecificationsE198573

ENGINE SPECIFICATIONS - 5.0L
Specification
Measurement
307 in³ (5,038 cm³)
Engine displacement.
1-5-4-8-6-3-7-2
Firing order.
Coil on plug
Ignition system.
0.049 in (1.25 mm) - 0.053 in (1.35 mm)
Spark plug gap.
12.0:1
Compression ratio.
Drivebelt Routing BRAKE SYSTEM SPECIFICATIONS - MACH 1
Front
Specification
Description
14.96 in (380 mm)
Rotor diameter.
1.34 in (34 mm)
Rotor width.
81.18 in² (523.76 cm²)
Rotor swept area.
1.42 in (36 mm)
Caliper piston diameter.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Capacities and SpecificationsE198573

USING SYNC™ WITH YOUR
PHONE
Hands-free calling is one of the main
features of SYNC. While the system
supports a variety of features, many are
dependent on your cellular phone's
functionality. At a minimum, most cellular
phones with Bluetooth wireless technology
support the following functions:
•
Answering an incoming call.
• Ending a call.
• Dialing a number.
• Redialing.
• Call waiting notification.
• Caller identification.
Other features, such as text messaging
using Bluetooth and automatic phonebook
download, are phone-dependent features.
Pairing a Phone
Wirelessly pairing your phone with SYNC
allows you to make and receive hands-free
calls.
Note: Make sure to switch on the ignition
and the radio. Shift the transmission into
park (P) for automatic transmission or
neutral (N) for manual transmission.
Using the Audio System
Note: To scroll through the menus, press
the up and down arrows on your audio
system.
1. Make sure to switch on your phone's Bluetooth feature before starting the
search. See your device's manual if
necessary.
2. Press the Settings button.
3. Select Bluetooth from the menu.
4. Press the
OK button.
5. Select the option to add. This starts the pairing process. 6. When a message to begin pairing
appears in the audio display, search for
SYNC on your device.
Depending on your phone's capability and
your market, the system may prompt you
with questions, such as setting the current
phone as the primary phone and
downloading your phonebook.
Using Voice Commands Make sure to switch on your
phone's Bluetooth feature
before starting the search. See
your device's manual if necessary.
Press the voice button and when
prompted say: Action and Descrip-
tion
Voice Command
Follow the instruc-
tions on the audio
display.
Pair Phone
Phone Voice Commands Press the voice button. You can
do things like place a phone call
and access text messages.
When prompted, say a command. See the
following table for examples of
commands. Voice Command
___ List of Commands
Help
Call ___
Dial ___
Text Messages
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(If Equipped)E142599 E142599

AppLink Issues
Possible Solution(s)
Possible Cause(s)
Issue
SYNC in order to find
AppLink-capable apps on your device. iPhone users must also connect to
SYNC's USB port with an Apple USB cable.
Ensure you have down-
loaded and installed the latest version of the app
from your phone's app store.
Ensure the app is running on your phone. Some apps
AppLink-enabled apps are
not installed and running on your mobile device.
My phone is connected, but
I still cannot find any apps. require you to register or
login on the app on the
phone before using them with AppLink. Also, some may have a Ford SYNC
setting, so check the app's
settings menu on the phone.
Closing and restarting apps may help SYNC find the
application if you cannot
discover it inside the vehicle. On an Android device, if
apps have an Exit or Quit
Sometime apps do not
properly close and re-open their connection to SYNC, over ignition cycles, for example.
My phone is connected, my
app(s) are running, but I still cannot find any apps. option, select that then
restart the app. If the app
does not have that option,
you can also manually Force Close the app by going to
the phone's settings menu,
selecting Apps. then finding the particular app andchoosing Force stop.
Remember to restart the
app afterwards, then select Find New Apps on SYNC.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing SYNC™ (If Equipped)