2021 FORD MUSTANG headlamp

Protected Component
Fuse Rating
Fuse or Relay
Number
Telematic control unit - modem.
5A
8
Not used.
5A
9
Not used.
—
10
Not used.
—
11
Electronic control panel.
7.5A
12
Gateway module.
Gear shift module (GT500).
Steering column control module.
7.5A
13
Instrument cluster.
Not used.
15A
14
SYNC.
15A
15
Gauges.
Not used.
—
16
Headlamp leveling switch (base).
7.5A
17
Not used (GT500).
—
Not used.
7.5A
18
Not used.
5A
19
Intrusion sensor module.
5A
20
In-vehicle temperature and humidity
sensor.
5A
21
Auxiliary body module.
5A
22
Amplifier.
30A
23
Vehicle dynamics module.
30A
24
Ambient lighting module (base).
20A
25
Auxiliary body module.
Right-hand front-window motor (power
distribution module).
30A
26
Passenger door control unit.
Left-hand rear-window power (base).
30A
27
Not used (GT500).
—
253
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Fuses

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.
272
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing MaintenanceE107998

Headlamp Aiming Target
8 ft (2.4 m).
A
Center height of lamp to ground.
B
25 ft (7.6 m).
C
Horizontal reference line.
D
Vertical Aim Adjustment
1. Park the vehicle directly in front of a wall or screen on a level surface,
approximately 25 ft (7.6 m) away.
2. Measure the height from the center of your headlamp indicated by a 3 mm
circle on the lens to the ground and
mark an
8 ft (2.4 m) horizontal
reference line on the vertical wall or
screen at this height, a piece of
masking tape works well.
Note: To see a clearer light pattern for
adjusting, you may want to block the light
from one headlamp while adjusting the
other.
3. Turn on the low beam headlamps to illuminate the wall or screen and open
the hood. Cover one of the headlamps
so no light hits the wall. 4. On the wall or screen you will observe
a flat zone of high intensity light at the
top of the right-hand portion of the
beam pattern. If the top edge of the
high intensity light zone is not at the
horizontal reference line, the headlamp
needs to be adjusted. 5. Locate the vertical adjuster on each
headlamp. Use a Phillips #2
screwdriver to turn the adjuster either
clockwise or counterclockwise to
adjust the vertical aim of the
headlamp.
6. Repeat Steps 3 through 7 to adjust the
other headlamp.
7. Close the hood and turn off the lamps.
273
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing MaintenanceE142592 E142465 E250054

Poor wiper quality can be improved by
cleaning the wiper blades and the
windshield. See Cleaning the Windows
and Wiper Blades (page 294).
CHANGING A BULB
Replacing Reverse Lamp Bulbs
1. Make sure the lighting control is in the off position.
2. Locate the reverse lamp bulb under the
rear bumper of your vehicle. To access
the bulb, reach behind the bumper.
3. Disconnect the electrical sensor from the bulb by pulling it straight off. 4. Rotate the bulb counterclockwise and
remove it from the reverse lamp
assembly.
LED Lamps
LED lamps are not serviceable items.
Contact an authorized dealer if they fail.
The following are LED lamps:
• Headlamps.
• Rear lamp.
• Brake lamp.
• Front fog lamp.
• Front sidemarker
• Daytime running lamp. •
Central high mounted brake lamp.
• Front direction indicator.
• Rear direction indicator lamp.
• License plate lamp.
275
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing MaintenanceE177487

BULB SPECIFICATION CHART
Replacement bulbs are specified in the
chart below. Headlamp bulbs must be
marked with an authorized "D.O.T." for
North America and an "E" for Europe to
make sure lamp performance, light
brightness and pattern and safe visibility.
The correct bulbs do not damage the lamp
assembly or void the lamp assembly
warranty and provide quality bulb
illumination time. Trade name
Function
LED
Headlamps. 1
LED
Front park and direction indicators. 1
LED
Front side marker. 1
LED
Front fog lamp. 1
LED
Rear lamp, brake lamp and direction
indicator lamp. 1
194
Rear side marker.
LED
High-mount brake lamp. 1
3156 or 3157
Backup lamp.
LED
License plate lamp. 1
W5W
Dome and map lamp.
T-3
Glove box.
LED
Cargo lamp. 1
LED
Daytime running lamp. 1
1 Contact an authorized dealer to replace the bulb.
To replace all instrument panel lights, contact an authorized dealer.
359
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Capacities and Specifications

A
A/C
See: Climate Control.......................................... 127
About This Manual...........................................9
About This Supplement - Mach 1...............9 Mach 1 History........................................................ 10
ABS See: Brakes............................................................. 171
ABS driving hints See: Hints on Driving With Anti-Lock
Brakes.................................................................. 171
Accessories....................................................438
Accessories See: Replacement Parts
Recommendation............................................ 19
ACC See: Using Adaptive Cruise Control............185
Adjusting the Headlamps.........................272
Horizontal Aim Adjustment............................ 274
Vertical Aim Adjustment................................. 272
Adjusting the Steering Wheel....................75
Airbag Disposal...............................................57
Air Conditioning See: Climate Control.......................................... 127
Air Filter See: Changing the Engine Air Filter - 2.3L
EcoBoost™/5.0L.......................................... 263
See: Changing the Engine Air Filter - 5.0L, Mach 1............................................................... 262
Alarm See: Anti-Theft Alarm......................................... 74
Ambient Lighting
............................................83
Anti-Theft Alarm............................................74
Arming the Alarm................................................. 74
Disarming the Alarm........................................... 74
Appendices....................................................483
Apps
.................................................................420
SiriusXM Traffic and Travel Link...................422
Using Apps on an Android Device................421
Using Apps on an iOS Device......................... 421
Using Mobile Navigation on an Android Device................................................................. 421
At a Glance
.......................................................23
Audible Warnings and Indicators.............97 Beltminder Warning............................................ 98
Direction Indicator Left On............................... 98
Headlamps On Warning Tone......................... 97Keyless Warning Alert.........................................
97
Parking Brake On Warning Tone.....................97
Transmission Not in Park.................................. 98
Audio Control
...................................................75
You can operate the following functions
with the control:............................................... 75
Audio System
................................................365
General Information......................................... 365
Audio Unit - Vehicles With: 4.2 Inch Information and Entertainment Display
Screen...........................................................365
Accessing the Apps Menu.............................. 366
Accessing the Clock Settings.......................366
Accessing the Media Source Menu............366
Accessing the Phone Features.....................366
Accessing the Settings Menu.......................366
Accessing the Sound Settings.....................366
Adjusting the Volume...................................... 366
Changing Radio Stations............................... 366
Listening to the Radio...................................... 367
Muting the Audio................................................ 367
Playing or Pausing Media................................ 367
Switching the Audio Unit On and Off.........367
Switching the Display On and Off...............367
Using Seek, Fast Forward and Reverse .............................................................. 367
Using the Display Control............................... 367
Using the Number Block................................. 367
Audio Unit - Vehicles With: 8 Inch Information and Entertainment Display
Screen...........................................................367
Accessing the Sound Settings.....................368
Adjusting the Volume...................................... 368
Changing Radio Stations............................... 368
Ejecting the CD................................................... 368
Inserting a CD..................................................... 368
Playing or Pausing Media............................... 368
Switching the Audio Unit On and Off........368
Using Seek, Fast Forward and Reverse............................................................. 369
Autolamps
.........................................................81
Windshield Wiper Activated
Headlamps......................................................... 81
Automatic Climate Control......................128 Setting the Blower Motor Speed..................128
Setting the Temperature................................. 129
Switching Auto Mode On and Off................129
Switching Defrost On and Off.......................129
513
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Index

Headlamp Adjusting
See: Adjusting the Headlamps...................... 272
Headlamp Exit Delay.....................................81
Headrest See: Head Restraints......................................... 134
Head Restraints.............................................134 Adjusting the Head Restraint......................... 135
Front Seat Non-Adjustable Head Restraints ........................................................................\
...... 135
Tilting Head Restraints .................................... 136
Heated Exterior Mirrors...............................132
Heated Rear Window..................................132
Heating See: Climate Control.......................................... 127
Hill Start Assist
..............................................173
Switching the System On and Off................173
Using Hill Start Assist........................................ 173
Hints on Controlling the Interior Climate - Vehicles With: Automatic
Temperature Control
.................................131
Defogging the Side Windows in Cold
Weather............................................................. 132
General Hints......................................................... 131
Quickly Cooling the Interior.............................. 131
Quickly Heating the Interior............................. 131
Recommended Settings for Cooling............131
Recommended Settings for Heating............131
Hints on Controlling the Interior Climate - Vehicles With: Manual Temperature
Control...........................................................130
Defogging the Side Windows in Cold Weather.............................................................. 131
General Hints....................................................... 130
Quickly Cooling the Interior............................ 130
Quickly Heating the Interior............................ 130
Recommended Settings for Cooling..........130
Recommended Settings for Heating..........130
Vehicle Stationary for Extended Periods During Extreme High Ambient
Temperatures.................................................. 130
Hints on Driving With Anti-Lock Brakes..............................................................171
Hood Lock See: Opening and Closing the Hood..........256
Horn
......................................................................77
How Does the Garage Door Opener Work................................................................141 I
In California (U.S. Only)
............................239
Information Display Control - Vehicles With: SYNC 3.................................................76
Quick Action Menus............................................. 77
Information Display Control - Vehicles With: SYNC....................................................76
Information Displays....................................99 General Information - Mach 1.......................... 99
General Information - Vehicles With: 12.3 Inch Instrument Cluster Display
Screen............................................................... 109
General Information - Vehicles With: 4.2 Inch Instrument Cluster Display
Screen................................................................ 103
Information Messages
.................................113
Adaptive Cruise Control.................................... 113
Airbag....................................................................... 114
Alarm........................................................................\
114
Battery and Charging System......................... 114
Blind Spot Information and Cross Traffic Alert System..................................................... 115
Doors and Locks.................................................. 116
Drive Control.......................................................... 116
Electronic Stability Control.............................. 116
Engine...................................................................... 116
Exhaust Mode........................................................ 117
Fuel........................................................................\
.... 117
Hill Start Assist...................................................... 117
Keys and Passive Key.......................................... 117
Maintenance......................................................... 118
MyKey....................................................................... 119
Park Aid................................................................... 119
Park Brake............................................................. 120
Pre-Collision Assist............................................ 120
Rear Axle................................................................ 120
Remote Start........................................................ 120
Seats........................................................................\
. 121
Starting System ................................................... 121
Steering System.................................................. 122
Suspension System........................................... 122
Tire Mobility Kit.................................................... 122
Tire Pressure Monitoring System.................. 123
Traction Control................................................... 123
Transmission.........................................................123
Installing Child Restraints - Mach 1..........27 Rear Seat Delete................................................... 27
519
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