2021 FORD MUSTANG check engine

Multi-Point Inspection
In order to keep your vehicle running right,
it is important to have the systems on your
vehicle checked regularly. This can help
identify potential issues and prevent major
problems. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval
to help make sure your vehicle keeps
running great.Multi-Point inspection
Hazard warning system operation.
Accessory drive belts.
Horn operation.
Battery performance.
Radiator, cooler, heater and air conditioninghoses.
Engine air filter.
Suspension components for leaks ordamage.
Exhaust system.
Steering and linkage.
Exterior lamps operation.
Tires, including spare, for wear and properpressure.2
Fluid levels; fill if necessary. 1
Windshield for cracks, chips or pits.
For oil and fluid leaks.
Washer spray and wiper operation.
Half-shaft dust boots.
1 Brake, coolant recovery reservoir, automatic transmission and window washer.
2 If your vehicle is equipped with a temporary mobility kit, check the tire sealant expiration
Use By date on the canister. Replace as needed.
Be sure to ask your dealership service
advisor or technician about the multi-point
vehicle inspection. It is a comprehensive
way to perform a thorough inspection of
your vehicle. Your checklist gives you
immediate feedback on the overall
condition of your vehicle. NORMAL SCHEDULED
MAINTENANCE
Intelligent Oil-Life Monitor™
Your vehicle has an Intelligent Oil-Life
Monitor that determines when you should
change the engine oil based on how you
use your vehicle. By using several
important factors in its calculations, the
monitor helps reduce the cost of owning
your vehicle and reduces environmental
waste at the same time.
444
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Scheduled Maintenance

Switching Maximum Air Conditioning On
and Off............................................................... 129
Switching Maximum Defrost On and Off........................................................................\
129
Switching Recirculated Air On and Off....................................................................... 130
Switching the Air Conditioning On and Off........................................................................\
129
Switching the Climate Control On and Off........................................................................\
129
Automatic High Beam Control.................84
Automatic High Beam Control Indicators.......................................................84
Automatic Transmission...........................165
Automatic Transmission Adaptive
Learning............................................................ 168
Brake-Shift Interlock.......................................... 167
If Your Vehicle Gets Stuck in Mud or Snow.................................................................. 168
SelectShift Automatic ™
Transmission................................................... 166
Understanding the Positions of Your Automatic Transmission............................ 166
Automatic Transmission Fluid Check............................................................269
Autowipers........................................................78
Auxiliary Power Points................................145 12 Volt DC Power Point..................................... 145
Locations............................................................... 145
B
Battery See: Changing the 12V Battery..................... 270
Blind Spot Information System..............196 ........................................................................\
........... 197
Switching the System On and Off...............198
System Errors....................................................... 198
Using the Blind Spot Information System............................................................... 197
BLIS See: Blind Spot Information System..........196
Body Styling Kits.........................................298
Bonnet Lock See: Opening and Closing the Hood..........256
Booster Seats
..................................................35
Types of Booster Seats...................................... 36Brake Fluid Check........................................269
Brake Fluid Service Interval............................ 270
Brakes.................................................................171 General Information............................................ 171
Brake System Specifications - Mach 1........................................................................\
337
Breaking-In.....................................................230 Ground Clearance............................................. 230
Bulb Specification Chart..........................359
C
Canceling the Set Speed...........................185
Capacities and Specifications - 2.3L EcoBoost™.................................................343
Air Conditioning System................................. 344
Alternative Engine Oil for Extremely Cold Climates............................................................ 347
Automatic Transmission................................ 344
Engine Coolant................................................... 345
Engine Oil 2.3L EcoBoost Base.................... 346
Engine Oil 2.3L EcoBoost High Output.............................................................. 348
Fuel Tank.............................................................. 349
Grease.................................................................... 349
Hydraulic Brake System.................................. 350
Locks...................................................................... 350
Manual Transmission....................................... 345
Rear Axle............................................................... 350
Washer Reservoir................................................ 351
Capacities and Specifications - 5.0L.................................................................351
Air Conditioning System.................................. 352
Alternative Engine Oil for Extremely Cold Climates........................................................... 355
Automatic Transmission................................. 352
Engine Coolant................................................... 354
Engine Oil.............................................................. 355
Fuel Tank.............................................................. 356
Grease.................................................................... 356
Hydraulic Brake System................................... 357
Locks....................................................................... 357
Manual Transmission - 3160......................... 354
Manual Transmission - MT82....................... 353
Rear Axle............................................................... 357
Washer Reservoir............................................... 358
Capacities and Specifications................335
514
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

Car Wash
See: Cleaning the Exterior............................... 291
See: Cleaning the Exterior - Mach 1.............291
Catalytic Converter.......................................161
On-Board Diagnostics (OBD-II).................... 162
Readiness for Inspection and Maintenance (I/M) Testing.................................................... 162
Center Console..............................................146 Locking Storage Bin........................................... 146
Changing a Bulb
...........................................275
LED Lamps........................................................... 275
Replacing Reverse Lamp Bulbs.................... 275
Changing a Fuse
..........................................254
Fuses...................................................................... 254
Changing a Road Wheel
...........................328
Dissimilar Spare Wheel and Tire Assembly
Information..................................................... 328
Tire Change Procedure.................................... 329
Changing the 12V Battery
.........................270
Battery Management System........................ 271
Remove and Reinstall the Battery...............272
Changing the Engine Air Filter - 2.3L EcoBoost™/5.0L......................................263
Changing the Engine Air Filter - 5.0L, Mach 1
...........................................................262
Changing the Vehicle Wi-Fi Hotspot Name or Password..................................364
Changing the Wiper Blades
.....................274
Checking MyKey System Status...............65
Checking the Wiper Blades
......................274
Child Restraint and Seatbelt Maintenance.................................................46
Child Restraint Positioning..........................37
Child Safety......................................................25 General Information............................................ 25
Cleaning Leather Seats.............................295
Cleaning Products......................................290 Materials............................................................... 290
Cleaning the Convertible Top
.................298
Cleaning the Engine....................................293
Cleaning the Engine - Mach 1..................293
Cleaning the Exterior...................................291 Cleaning the Exterior Lamps......................... 292
Cleaning the Exterior Precautions...............292
Exterior Chrome Parts...................................... 292
Exterior Plastic Parts........................................ 292
Stripes or Graphics............................................ 292
Underbody............................................................ 292Under Hood..........................................................
292
Cleaning the Exterior - Mach 1.................291 Washing Your Vehicle........................................ 291
Cleaning the Instrument Panel and Instrument Cluster Lens........................295
Cleaning the Interior...................................294 Mirrors.................................................................... 294
Cleaning the Wheels..................................296
Cleaning the Windows and Wiper Blades...........................................................294
Clearing All MyKeys.......................................64
Clearing the Garage Door Opener..........143
Climate..............................................................411 Accessing Rear Climate Controls.................413
Accessing the Climate Control Menu...........411
Directing the Airflow........................................... 411
Rear Climate Control Lock Indicator...........413
Setting the Blower Motor Speed...................411
Setting the Temperature.................................. 411
Switching Auto Mode On and Off.................411
Switching Dual Zone Mode On and Off........................................................................\
412
Switching Maximum Air Conditioning On and Off............................................................... 412
Switching Maximum Defrost On and Off........................................................................\
412
Switching Rear Auto Mode On and Off........................................................................\
413
Switching Recirculated Air On and Off........................................................................\
413
Switching the Air Conditioning On and Off ........................................................................\
. 411
Switching the Climate Controlled Seats On and Off............................................................... 412
Switching the Climate Control On and Off........................................................................\
412
Switching the Heated Exterior Mirrors On and Off............................................................... 412
Switching the Heated Rear Window On and Off........................................................................\
412
Switching the Heated Seats On and Off........................................................................\
412
Switching the Heated Steering Wheel On and Off............................................................... 412
Switching the Heated Windshield On and Off........................................................................\
412
Switching the Rear Climate Controlled Seats On and Off........................................... 413
515
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

Switching the Rear Heated Seats On and
Off........................................................................\
413
Switching the Rear Ventilated Seats On and Off............................................................... 413
Switching the Ventilated Seats On and Off........................................................................\
413
Climate Control..............................................127
Climate Controlled Seats..........................139 Cooled Seats........................................................ 140
Heated Seats........................................................ 139
Closing the Convertible Top.....................227
Clutch Fluid Check - Manual Transmission..............................................270
Cold Weather Precautions.......................230
Connected Vehicle.....................................360
Connecting the Vehicle to a Mobile
Network........................................................... 360
Connected Vehicle Limitations..............360
Connected Vehicle Requirements........360
Connected Vehicle – Troubleshooting - Vehicles With: Modem.............................361
Connected Vehicle – Troubleshooting - Vehicles With: SYNC 3............................362
Connecting the Vehicle to a Mobile Network.......................................................360
Connecting FordPass to the Modem.........360
Enabling and Disabling the Modem..........360
What Is the Modem.......................................... 360
Connecting the Vehicle to a Wi-Fi Network.......................................................360
Convertible Top............................................226
Coolant Check See: Engine Coolant Check........................... 264
Crash Sensors and Airbag Indicator
.......56
Creating a MyKey...........................................64
Creating a Vehicle Wi-Fi Hotspot..........364 Connecting a Device to the Wi-Fi
Hotspot............................................................ 364
Finding the Wi-Fi Hotspot Name and Password......................................................... 364
Cross Traffic Alert.........................................198 Cross Traffic Alert Behavior When Trailer
is Attached...................................................... 200
Cross Traffic Alert Indicator............................ 201
Cross Traffic Alert Information Messages.......................................................... 201
Cross Traffic Alert System Limitations...................................................... 200Cross Traffic Alert System Sensors............200
Switching the System On and Off..............200
Using Cross Traffic Alert..................................
198
Cruise Control
................................................184
Cruise Control Indicators...........................185
Cruise Control - Vehicles With: Adaptive Cruise Control...............................................76
Cruise Control - Vehicles With: Cruise Control.............................................................76
Customer Assistance
.................................238
Customer Information................................451
Radio Frequency Certification Labels.........451
D
Data Recording
................................................15
Comfort, Convenience and Entertainment
Data........................................................................\
17
Event Data............................................................... 16
Service Data............................................................ 16
Services That Third Parties Provide................17
Services That We Provide................................... 17
Vehicles With a Modem...................................... 17
Vehicles With an Emergency Call System................................................................. 18
Vehicles With SYNC............................................. 18
Daytime Running Lamps - Vehicles With: Configurable Daytime Running
Lamps..............................................................82
Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)
............82
Declaration of Conformity - Vehicles With: SYNC 3
................................................511
Radio Frequency Statement........................... 511
Digital Radio
..................................................369
HD Radio Reception and Station
Troubleshooting............................................ 370
Direction Indicators.......................................83
Doors and Locks.............................................67
Drive Control
.................................................209
Active Exhaust...................................................... 211
Adaptive Dampers............................................... 211
Rev Match.............................................................. 212
Selectable Drive Modes.................................. 209
Selectable Steering............................................. 211
Drive Control - Mach 1...............................206 Active Exhaust.................................................... 208
No Lift Shift......................................................... 209
516
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

Rev Match............................................................
208
Selectable Drive Modes.................................. 206
Selectable Steering.......................................... 208
Driver Alert.......................................................191
Using Driver Alert................................................. 191
Driver and Passenger Airbags...................49 Children and Airbags.......................................... 50
Proper Driver and Front Passenger Seating Adjustment........................................................ 49
Driver and Passenger Knee Airbags........54
Driving Aids
......................................................191
Driving at High Speed.................................333
Driving Hints...................................................229
Driving Through Water
...............................230
DRL See: Daytime Running Lamps - Vehicles With:
Configurable Daytime Running
Lamps.................................................................. 82
See: Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)................82
E
Economical Driving
.....................................229
Electromagnetic Compatibility..............483
Emission Law.................................................160 Tampering With a Noise Control
System.............................................................. 160
Enabling Remote Start
...............................124
End User License Agreement.................486 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) ................................ 486
Engine Block Heater....................................150 Using the Engine Block Heater....................... 151
Engine Coolant Check
...............................264
Adding Coolant.................................................. 264
Coolant Change................................................. 266
Engine Coolant Temperature Management.................................................. 267
Fail-Safe Cooling............................................... 266
Recycled Coolant............................................... 265
Severe Climates................................................. 266
Engine Emission Control...........................160
Engine Immobilizer See: Passive Anti-Theft System.....................73
Engine Oil Check...........................................261 Adding Engine Oil............................................... 261
Engine Oil Dipstick
.......................................261 Engine Specifications - 2.3L
EcoBoost™.................................................335
Drivebelt Routing............................................... 335
Engine Specifications - 5.0L, Mach 1........................................................................\
335
Drivebelt Routing............................................... 336
Engine Specifications - 5.0L....................337 Drivebelt Routing................................................ 337
Entertainment...............................................401 AM/FM Radio...................................................... 402
Apps........................................................................\
410
CD........................................................................\
... 408
HD Radio ™ Information (If
Available)........................................................ 405
SiriusXM® Satellite Radio (If Activated)....................................................... 403
Sources.................................................................. 401
Stereo or USB..................................................... 409
Supported Media Players, Formats and Metadata Information................................. 410
USB Ports.............................................................. 410
Environment.....................................................22
Essential Towing Checks..........................220 Before Towing a Trailer.................................... 220
Hitches................................................................... 220
Launching or Retrieving a Boat or Personal Watercraft (PWC)......................................... 221
Safety Chains...................................................... 220
Trailer Brakes....................................................... 220
Trailer Lamps....................................................... 220
When Towing a Trailer....................................... 221
Event Data Recording See: Data Recording............................................. 15
Export Unique Options
..................................21
Extending the Remote Start Duration.........................................................124
Exterior Mirrors
................................................87
Blind Spot Monitor.............................................. 88
Fold-Away Exterior Mirrors............................... 87
Heated Exterior Mirrors...................................... 87
Integrated Blind Spot Mirrors........................... 87
Memory Mirrors..................................................... 87
Power Exterior Mirrors........................................ 87
Projection Lights................................................... 87
Signal Indicator Mirrors...................................... 87
517
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

F
Fastening the Seatbelts...............................41
Seatbelt Locking Modes.................................... 43
Using Seatbelts During Pregnancy................42
Flat Tire See: Changing a Road Wheel....................... 328
Flat Tire Inflation See: Tire Sealant and Inflator Kit................299
Floor Mats........................................................231
Fog Lamps - Front See: Front Fog Lamps........................................ 82
Ford Credit.........................................................19 US Only..................................................................... 19
Ford Protect
...................................................439
Ford Protect Extended Service Plan
(CANADA ONLY).......................................... 440
Ford Protect Extended Service Plans (U.S. Only).................................................................. 439
Front Fog Lamps
............................................82
Front Fog Lamp Indicator................................. 83
Switching the Front Fog Lamps On or Off........................................................................\
. 82
Front Passenger Sensing System............50
Fuel and Refueling.......................................152
Fuel Consumption
.......................................158
Advertised Capacity.......................................... 158
Calculating Fuel Economy.............................. 159
Filling the Fuel Tank........................................... 159
Fuel Filler Funnel Location........................154
Fuel Filter.........................................................274
Fuel Quality
.....................................................153
Choosing the Right Fuel................................... 153
Fuel Quality - Mach 1...................................152 Choosing the Right Fuel................................... 152
Fuel Shutoff
...................................................233
Fuses................................................................245
Fuse Specification Chart..........................245
Passenger Compartment Fuse Panel.........251
Power Distribution Box.................................... 245
G
Garage Door Opener....................................141
Garage Door Opener Limitations
............141
Garage Door Opener Precautions...........141 Garage Door Opener Radio
Frequencies.................................................144
FCC and RSS-210 Industry Canada Compliance..................................................... 144
Gauges - Mach 1.............................................90 Oil Pressure Gauge.............................................. 90
Vacuum Gauge..................................................... 90
Gauges - Vehicles With: 12.3 Inch Instrument Cluster Display
Screen.............................................................90
Engine Coolant Temperature Gauge.............91
Fuel Gauge............................................................... 91
Gauge Package..................................................... 92
Information Bar...................................................... 91
Information Display.............................................. 91
Gauges - Vehicles With: 4.2 Inch Instrument Cluster Display
Screen..............................................................92
Engine Coolant Temperature Gauge............93
Fuel Gauge.............................................................. 93
Gauge Package..................................................... 94
Information Bar..................................................... 93
Information Display............................................. 93
Gearbox See: Transmission.............................................. 164
General Information on Radio Frequencies...................................................58
Intelligent Access................................................. 58
General Maintenance Information
........441
Multi-Point Inspection..................................... 444
Owner Checks and Services.......................... 443
Protecting Your Investment............................ 441
Why Maintain Your Vehicle?.......................... 441
Why Maintain Your Vehicle at Your Dealership?...................................................... 441
Getting Assistance Outside the U.S. and Canada..........................................................241
Getting the Services You Need...............238 Away From Home.............................................. 238
Glasses Holder
..............................................146
Global Opening..............................................86 Opening the Windows........................................ 87
H
Handbrake See: Parking Brake.............................................. 172
Hazard Flashers
............................................233
518
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

Installing Child Restraints - Vehicles
With: SVT Performance Package.........34
Rear Seat Delete................................................... 34
Installing Child Restraints - Vehicles Without: SVT Performance
Package..........................................................28
Child Seats.............................................................. 28
Using Lap and Shoulder Belts......................... 28
Using Lower Anchors and Tethers for CHildren (LATCH)............................................. 31
Using Tether Straps............................................. 32
Instrument Cluster
........................................90
Instrument Lighting Dimmer......................81
Instrument Panel
............................................23
Interior Air Quality.........................................133
Interior Lamps
.................................................83
Interior Luggage Compartment Release............................................................72
Interior Mirror...................................................88 Auto-Dimming Mirror......................................... 88
Introduction........................................................9
J
Jump Starting the Vehicle........................234 Connecting the Jumper Cables.................... 234
Installing the Battery Shield.......................... 236
Preparing Your Vehicle..................................... 234
Removing the Battery Shield........................ 234
Removing the Jumper Cables....................... 235
Starting the Engine........................................... 235
K
Keyless Starting
.............................................147
Ignition Modes...................................................... 147
Keys and Remote Controls.........................58
L
Lane Keeping System.................................192 Switching the System On and Off...............193
Lighting Control
..............................................80
Flashing the Headlamp High Beam...............81
Headlamp High Beam....................................... 80
Lighting
..............................................................80
General Information........................................... 80Limited Slip Differential.............................170
Traction-Lok ™ and TORSEN™ Axles.........170
Load Carrying.................................................213
Load Limit........................................................213 Special Loading Instructions - for all
vehicles............................................................... 217
Vehicle Loading - with and without a Trailer.................................................................. 213
Locating the Cabin Air Filter.....................133
Locking and Unlocking.................................67 Activating Intelligent Access........................... 68
Autolock.................................................................. 69
Battery Saver.......................................................... 72
Illuminated Entry.................................................... 71
Illuminated Exit...................................................... 72
Locking and Unlocking the Doors with the Key Blade............................................................ 70
Opening the Luggage Compartment.............71
Power Door Locks................................................. 67
Remote Control..................................................... 67
Smart Unlocks...................................................... 69
Lug Nuts See: Changing a Road Wheel....................... 328
M
Maintenance.................................................256 General Information......................................... 256
Manual Climate Control
.............................127
Directing the Airflow........................................... 127
Setting the Blower Motor Speed...................127
Setting the Temperature.................................. 127
Switching Maximum Air Conditioning On and Off............................................................... 128
Switching Maximum Defrost On and Off........................................................................\
128
Switching Recirculated Air On and Off........................................................................\
128
Switching the Air Conditioning On and Off........................................................................\
127
Switching the Climate Control On and Off........................................................................\
128
Manual Seats
.................................................136
Manual Transmission Fluid Check - 6-Speed Manual Transmission –
3160...............................................................268
520
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

Manual Transmission Fluid Check -
6-Speed Manual Transmission –
MT82.............................................................268
Manual Transmission.................................164 Parking Your Vehicle.......................................... 165
Recommended Shift Speeds........................164
Reverse (R)........................................................... 165
Using the Clutch................................................. 164
Memory Function..........................................137
Easy Entry and Exit Feature............................ 138
Linking a Preset Position to your Remote Control or Intelligent Access Key
Fob...................................................................... 138
Saving a Preset Position.................................. 138
Message Center See: Information Displays................................. 99
Mirrors See: Windows and Mirrors............................... 86
Mobile Communications Equipment.....................................................20
Motorcraft Parts - 2.3L EcoBoost™................................................340
Motorcraft Parts - 5.0L, Bullitt/Mach 1........................................................................\
342
Motorcraft Parts - 5.0L
...............................341
MyKey Settings...............................................63 Configurable MyKey Settings.......................... 63
Non-Configurable MyKey Settings................63
MyKey – Troubleshooting
...........................65
MyKey – Frequently Asked Questions.........66
MyKey – Information Messages..................... 65
MyKey ™.............................................................63
MyKey Settings..................................................... 63
MyKey – Troubleshooting................................. 65
N
Navigation.......................................................415 Changing the Format of the Map.................417
cityseeker.............................................................. 419
Michelin Travel Guide...................................... 420
Navigation Map Accuracy and Updates........................................................... 420
Route Guidance................................................... 417
Setting a Destination........................................ 416
SiriusXM Traffic and Travel Link..................420
Zoom....................................................................... 417Normal Scheduled Maintenance..........444
Intelligent Oil-Life Monitor™........................ 444
Normal Maintenance Intervals.................... 445
Track Use Maintenance Intervals................447
O
Oil Change Indicator Reset
.......................261
Oil Check See: Engine Oil Check....................................... 261
Opening and Closing the Hood..............256 Closing the Hood................................................ 257
Opening the Hood............................................. 256
Opening the Convertible Top..................226 Using the Tonneau Caps.................................. 227
Ordering Additional Owner's Literature......................................................243
Obtaining a French Owner ’s Manual..........243
Overriding Automatic High Beam Control............................................................84
P
Parking Aids....................................................178 Principle of Operation....................................... 178
Parking Brake..................................................172 All Vehicles............................................................. 172
Vehicles With Automatic Transmission.................................................... 172
Vehicles with Manual Transmission.............172
Passive Anti-Theft System.........................73 SecuriLock............................................................... 73
PATS See: Passive Anti-Theft System.....................73
Perchlorate
........................................................19
Personal Safety System ™..........................47
How Does the Personal Safety System
Work?................................................................... 47
Phone................................................................413 Android Auto........................................................ 415
Apple CarPlay...................................................... 415
Pairing Your Cell Phone for the First Time.................................................................... 414
Text Messaging.................................................... 414
Using Your Cell Phone...................................... 414
Post-Crash Alert System
..........................236
Power Door Locks See: Locking and Unlocking............................. 67
521
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index