battery FORD MUSTANG 2021 Owners Manual

The information contained in this publication was correct at the time of going to print. In the interest of
continuous development, we reserve the right to change specifications, design or equipment at any time
without notice or obligation. No part of this publication may be reproduced, transmitted, stored in a
retrieval system or translated into any language in any form by any means without our written permission.
Errors and omissions excepted.
© Ford Motor Company 2021
All rights reserved.
Part Number: 202010 20210217152127
California Proposition 65
WARNING: Operating, servicing and
maintaining a passenger vehicle or off-highway
motor vehicle can expose you to chemicals
including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to the
State of California to cause cancer and birth
defects or other reproductive harm. To minimize
exposure, avoid breathing exhaust, do not idle the
engine except as necessary, service your vehicle
in a well-ventilated area and wear gloves or wash
your hands frequently when servicing your vehicle.
For more information go to
www.P65Warnings.ca.gov/passenger-vehicle. WARNING:
Battery posts, terminals and
related accessories contain lead and lead
compounds, chemicals known to the State of
California to cause cancer and reproductive harm.
Wash your hands after handling
.

Customer Assistance
Getting the Services You Need
..............238
In California (U.S. Only) ...........................
239
The Better Business Bureau (BBB) Auto Line Program (U.S. Only) ....................
240
Utilizing the Mediation/Arbitration Program (Canada Only) .......................
241
Getting Assistance Outside the U.S. and Canada ........................................................
241
Ordering Additional Owner's Literature ........................................................................\
243
Reporting Safety Defects (U.S. Only) ........................................................................\
243
Reporting Safety Defects (Canada Only) ........................................................................\
243
Fuses
Fuse Specification Chart .........................
245
Changing a Fuse .........................................
254
Maintenance
General Information ..................................
256
Opening and Closing the Hood .............
256
Under Hood Overview - 2.3L EcoBoost™ ........................................................................\
258
Under Hood Overview - 5.0L .................
259
Under Hood Overview - 5.0L, Mach 1 .......................................................................
260
Engine Oil Dipstick ......................................
261
Engine Oil Check ..........................................
261
Oil Change Indicator Reset ......................
261
Changing the Engine Air Filter - 5.0L, Mach 1 .........................................................
262
Changing the Engine Air Filter - 2.3L EcoBoost™/5.0L ....................................
263
Engine Coolant Check ..............................
264
Manual Transmission Fluid Check - 6-Speed Manual Transmission – 3160
........................................................................\
268
Manual Transmission Fluid Check - 6-Speed Manual Transmission – MT82
........................................................................\
268 Automatic Transmission Fluid Check
........................................................................\
269
Brake Fluid Check .......................................
269
Clutch Fluid Check - Manual Transmission ............................................
270
Power Steering Fluid Check ....................
270
Changing the 12V Battery ........................
270
Adjusting the Headlamps ........................
272
Washer Fluid Check ...................................
274
Fuel Filter ........................................................
274
Checking the Wiper Blades .....................
274
Changing the Wiper Blades ....................
274
Changing a Bulb ..........................................
275
Track Use
Track Use - Mach 1 ......................................
276
Track Use .......................................................
283
Vehicle Care
General Information ..................................
289
General Information - GT500/Mach 1 ........................................................................\
289
Cleaning Products .....................................
290
Cleaning the Exterior - Mach 1 ................
291
Cleaning the Exterior ..................................
291
Waxing ............................................................
293
Cleaning the Engine - Mach 1 .................
293
Cleaning the Engine ...................................
293
Cleaning the Windows and Wiper Blades ........................................................................\
294
Cleaning the Interior ..................................
294
Cleaning the Instrument Panel and Instrument Cluster Lens ......................
295
Cleaning Leather Seats ............................
295
Repairing Minor Paint Damage .............
296
Cleaning the Wheels .................................
296
Vehicle Storage ...........................................
296
Cleaning the Convertible Top ................
298
Body Styling Kits ........................................
298
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Table of Contents

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
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Side airbag
Shield the eyes
Stability control
Hill descent control
Trail control
Windshield wiping system
Windshield wash and wipe
DATA RECORDING WARNING: Do not connect
wireless plug-in devices to the data link
connector. Unauthorized third parties
could gain access to vehicle data and
impair the performance of safety related
systems. Only allow repair facilities that
follow our service and repair instructions
to connect their equipment to the data
link connector.
We respect your privacy and are
committed to protecting it. The
information contained in this publication
was correct at the time of going to print,
but as technology rapidly changes, we
recommend that you visit the regional Ford
website for the latest information. Your vehicle has electronic control units
that have data recording functionality and
the ability to permanently or temporarily
store data. This data could include
information on the condition and status of
your vehicle, vehicle maintenance
requirements, events and malfunctions.
The types of data that can be recorded are
described in this section. Some of the data
recorded is stored in event logs or error
logs.
Note:
Error logs are reset following a service
or repair.
Note: We may provide information in
response to requests from law enforcement,
other government authorities and third
parties acting with lawful authority or
through a legal process. Such information
could be used by them in legal proceedings.
Data recorded includes, for example:
• Operating states of system
components, for example, fuel level,
tire pressure and battery charge level.
• Vehicle and component status, for
example, wheel speed, deceleration,
lateral acceleration and seatbelt
status.
• Events or errors in essential systems,
for example, headlamps and brakes.
• System responses to driving situations,
for example, airbag deployment and
stability control.
• Environmental conditions, for example,
temperature.
Some of this data, when used in
combination with other information, for
example, an accident report, damage to a
vehicle or eyewitness statements, could
be associated with a specific person.
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GENERAL INFORMATION ON
RADIO FREQUENCIES
This device complies with Part 15 of the
FCC Rules and with Industry Canada
license-exempt RSS standard(s).
Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) This device
must accept any interference received,
including interference that may cause
undesired operation.
WARNING: Changes or
modifications not expressively approved
by the party responsible for compliance
could void the user's authority to operate
the equipment. The term "IC:" before the
radio certification number only signifies
that Industry Canada technical
specifications were met.
The typical operating range for your
transmitter is approximately
33 ft (10 m).
Vehicles with the remote start feature will
have a greater range.
One of the following could cause a
decrease in operating range:
• Weather conditions.
• Nearby radio towers.
• Structures around the vehicle.
• Other vehicles parked next to your
vehicle.
The radio frequency used by your remote
control can also be used by other radio
transmitters, for example amateur radios,
medical equipment, wireless headphones,
wireless remote controls, cell phones,
battery chargers and alarm systems. If the
frequencies are jammed, you will not be
able to use your remote control. You can
lock and unlock the doors with the key.
Note: Make sure to lock your vehicle before
leaving it unattended. Note:
If you are in range, the remote control
will operate if you press any button
unintentionally.
Note: The remote control contains sensitive
electrical components. Exposure to moisture
or impact may cause permanent damage.
Intelligent Access
(If Equipped)
The system uses a radio frequency signal
to communicate with your vehicle and
authorize your vehicle to unlock when one
of the following conditions are met:
• You activate the front exterior door
handle switch.
• You press the luggage compartment
button.
• You press a button on the transmitter.
If excessive radio frequency interference
is present in the area or if the transmitter
battery is low, you may need to
mechanically unlock your door. You can
use the mechanical key blade in your
intelligent access key to open the driver
door in this situation. See
Remote
Control (page 58).
REMOTE CONTROL
Intelligent Access Key
Note: You may not be able to shift out of
park (P) unless the remote control is inside
your vehicle.
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1.
Insert the key blade into the slot on the
bottom of the handle and apply
upward pressure.
2. While maintaining upward pressure, move the cap rearward to release it.
Gently remove the key while doing so.
To install the cap: 1. Place the cap just forward of the key
cylinder.
2. Applying pressure to the cap, move it forward until it is in place. You may
hear a snap as it engages. Make sure you have properly installed the
cap by trying to move it rearward.
Replacing the Battery WARNING: Keep batteries away
from children to prevent ingestion.
Failure to follow this instruction could
result in personal injury or death. If
ingested, immediately seek medical
attention. WARNING:
If the battery
compartment does not securely close,
stop using the remote control and
replace it as soon as possible. In the
meantime, keep the remote control away
from children. Failure to follow this
instruction could result in personal injury
or death.
A message appears in the information
display when the remote control battery
is low. See Information Messages (page
113
).
The remote control uses one coin-type
three-volt lithium battery CR2450 or
equivalent.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Keys and Remote ControlsE151956 E151957

1. Push the release button and pull the
key blade out. 2. Twist a thin coin under the tab hidden
behind the key blade head to remove
the battery cover.
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3. Insert a suitable tool, for example a
screwdriver, in the position shown and
carefully remove the battery.
Note: Refer to local regulations when
disposing of remote control batteries.
Note: Do not wipe off any grease on the
battery terminals or on the back surface of
the circuit board.
Note: Replacing the battery does not erase
the programmed key from your vehicle. The
remote control should operate normally.
4. Install a new battery with the + facing
upward.
5. Reinstall the battery cover and the key
blade.
Car Finder Press the button twice within
three seconds. The horn sounds
and the direction indicators
flash. We recommend you use this method
to locate your vehicle, rather than using
the panic alarm. Sounding the Panic Alarm Press the button to sound the
panic alarm. Press the button
again or switch the ignition on to
turn it off.
Note: The panic alarm only operates when
the ignition is off.
Memory Feature
You can program your intelligent access
key to recall memory positions.
See
Memory Function (page 137).
REPLACING A LOST KEY OR
REMOTE CONTROL
Replacement keys or remote controls can
be purchased from an authorized dealer.
Authorized dealers can program remote
controls for your vehicle.
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button once. All door mode unlocks all
doors when you press the unlock button
once. The unlocking mode applies to the
remote control and intelligent access. You
can also change between the unlocking
modes using the information display. See
General Information (page 99).
Locking the Doors Press the button to lock all
doors. The direction indicators
flash. Press the button again
within three seconds to confirm that all
the doors are closed. The doors lock again,
the horn sounds and the direction
indicators flash if all the doors and the
luggage compartment are closed.
Mislock
If any door or the luggage compartment is
open, or if the hood is open on vehicles
with an anti-theft alarm or remote start,
the horn will sound twice and the direction
indicators do not flash. You can switch
this feature on or off in the information
display. See
General Information (page
99).
Opening the Luggage Compartment Press twice within three seconds
to open the luggage
compartment.
Make sure to close and latch the luggage
compartment before driving your vehicle.
Objects may fall from an unlatched
luggage compartment. An unlatched
luggage compartment may block your rear
view. Activating Intelligent Access
General Information
You can unlock and lock the vehicle
without taking the keys out of your pocket
or purse when your intelligent access key
is within
3 ft (1 m) of your vehicle.
Intelligent access uses a sensor on the
back of the door handle for unlocking and
a separate sensor on the face of each door
handle for locking.
The system does not function if:
• Your vehicle battery has no charge.
• The key battery has no charge.
• The key frequencies are jammed.
Note: The system may not function if the
key is close to metal objects or electronic
devices, for example keys or a cell phone.
Note: If the system does not function, use
the key blade to lock and unlock your
vehicle. See
Remote Control (page 58).
Unlocking Using Intelligent Access With your intelligent access key within
3 ft
(1 m) of your vehicle, touch the unlock
sensor on the back of the door handle for
a brief period and then pull on the door
handle to unlock, being careful to not
touch the lock sensor at the same time or
pulling the door handle too quickly. The
intelligent access system requires a brief
delay to authenticate your intelligent
access key fob.
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Note:
If you have unlocked the doors using
this method, you must lock the doors
individually to restore the central locking
function.
Unlocking the Luggage Compartment
(Convertible Only) If the power decklid release does not
operate because of a discharged battery,
pull the rear seat left-hand side seatback
cushion aside, insert the mechanical key
blade into the key slot and turn the key to
release the decklid latch.
Opening the Luggage
Compartment
From Inside Your Vehicle
Press the button on the instrument panel
to open the luggage compartment. From Outside Your Vehicle
Press the exterior release button hidden
above the license plate. You need to have
your vehicle unlocked or have an intelligent
access key within 3 ft (1 m) of the luggage
compartment.
With the Remote Control
Press twice within three seconds
to open the luggage
compartment.
Illuminated Entry
The interior lamps and select exterior
lamps illuminate when you unlock the
doors with the remote entry system.
The illuminated entry system turns off the
lights if:
• The ignition is on.
• You press the remote control lock
button.
• After 25 seconds of illumination.
The lights do not turn off if:
• You switch them on with the lamp
control.
• Any door is open.
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