headlamp FORD MUSTANG 2021 User Guide

Gauge Package (If Equipped)
Oil Pressure Gauge
Indicates the engine oil pressure.
Vacuum or Vacuum and Boost Gauge
Indicates the vacuum or vacuum and boost
pressure in the intake.
WARNING LAMPS AND
INDICATORS
The following warning lamps and
indicators alert you to a vehicle condition
that may become serious. Some lamps
illuminate when you start your vehicle to
make sure they work. If any lamps remain
on after starting your vehicle, refer to the
respective system warning lamp for further
information.
Note:
Some warning indicators appear in
the information display and operate the
same as a warning lamp but do not
illuminate when you start your vehicle.
Adaptive Cruise Control Indicator
(If Equipped) It illuminates when you switch
the system on. It illuminates white when the system is in
standby mode. It illuminates green when
you set the adaptive cruise speed.
See
Using Adaptive Cruise Control
(page 185).
Airbag Warning Lamp If it does not illuminate when you
switch the ignition on, continues
to flash or remains on when the
engine is running, this indicates a
malfunction. Have your vehicle checked
as soon as possible.
Anti-Lock Brake System Warning
Lamp If it illuminates when you are
driving, this indicates a
malfunction. Your vehicle
continues to have normal braking without
the anti-lock brake system function. Have
your vehicle checked as soon as possible.
Automatic Headlamp High Beam
Indicator
(If Equipped) It illuminates when the system
automatically turns the
headlamp high beam on.
See
What Is Automatic High Beam
Control (page 84).
Battery If it illuminates while driving, it
indicates a malfunction. Switch
off all unnecessary electrical
equipment and have the system checked
by your authorized dealer immediately.
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Headlamp High Beam Indicator
It will illuminate when you switch
the high beam headlamps on. It
will flash when you use the
headlamp flasher.
Hood Ajar It illuminates when the ignition
is on and the hood is not
completely closed.
Lane Keeping System Lamp (If
Equipped) Illuminates when the system
activates.
Launch Control Illuminates when this feature is
ready, including both slip control
and engine RPM hold.
Illuminates when only engine
RPM hold is active. See
Track
Use (page 276).
Low Beam Malfunction Lights when there is a
malfunction with the low beam
headlamp bulb.
Low Fuel Level Warning Lamp If it illuminates when you are
driving, refuel as soon as
possible.
Low Tire Pressure Warning Lamp Illuminates when your tire
pressure is low. If the lamp
remains on with the engine
running or when driving, check your tire
pressure as soon as possible. It also illuminates momentarily when you
switch the ignition on to confirm the lamp
is functional. If it does not illuminate when
you switch the ignition on, or begins to
flash at any time, have the system checked
by your authorized dealer.
Low Washer Fluid Level Warning
Lamp
Illuminates when the washer
fluid is low.
Oil Pressure Warning Lamp Illuminates when you switch the
ignition on.
If it illuminates when the engine
is running this indicates a malfunction.
Stop your vehicle as soon as it is safe to
do so and switch the engine off. Check the
engine oil level. If the oil level is sufficient,
this indicates a system malfunction. Have
your vehicle checked as soon as possible.
See
Engine Oil Check (page 261).
Parking Lamps Illuminate when you switch the
parking lamps on.
Powertrain Fault Illuminates when the system
detects a powertrain fault.
Contact an authorized dealer as
soon as possible.
Service Engine Soon If it illuminates when the engine
is running this indicates a
malfunction. The On Board
Diagnostics system has detected a
malfunction of the vehicle emission control
system.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Instrument Cluster E159324 E144813 E234583 E255688 E181350 E132353

If it flashes, engine misfire may be
occurring. Increased exhaust gas
temperatures could damage the catalytic
converter or other vehicle components.
Drive in a moderate fashion (avoid heavy
acceleration and deceleration) and have
your vehicle immediately serviced.
It illuminates when you switch the ignition
on prior to engine start to check the bulb
and to indicate whether your vehicle is
ready for Inspection and Maintenance
(I/M) testing.
Normally, it illuminates until the engine is
cranked and automatically turns off if no
malfunctions are present. However, if after
15 seconds it flashes eight times, this
indicates that your vehicle is not ready for
Inspection and Maintenance (I/M) testing.
See Catalytic Converter (page 161).
Shift Indicator
(If Equipped) Illuminates to inform you that
shifting to a higher gear as
indicated may give better fuel
economy and lower CO2
emissions. It will not illuminate during
periods of high acceleration, braking or
when you press the clutch pedal.
Stability Control and Traction
Control Indicator Flashes during operation.
If it does not illuminate when you
switch the ignition on, or remains
on when the engine is running, this
indicates a malfunction. Have your vehicle
checked as soon as possible.
Note: The system automatically turns off
if there is a malfunction.
See
Using Stability Control (page 176).
See Using Traction Control (page 174). Stability Control and Traction
Control Off Warning Lamp Illuminates when you switch the
system off.
Trunk Ajar Illuminates when the ignition is
on and the trunk is not
completely closed.
AUDIBLE WARNINGS AND
INDICATORS
Keyless Warning Alert
The horn sounds twice when you exit your
vehicle with the passive key and your
vehicle is in ON, indicating your vehicle is
still on. The horn also sounds twice when
you exit your vehicle and attempt to lock
the doors manually when the passive key
is still in the vehicle. The doors will not lock
if the passive key remains in the vehicle.
Headlamps On Warning Tone
Sounds when you remove the key from the
vehicle and you have left the headlamps
or parking lamps on.
Parking Brake On Warning Tone
Sounds when you have left the parking
brake on and drive your vehicle. If the
warning tone remains on after you release
the parking brake, have the system
checked by your authorized dealer
immediately.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Instrument Cluster E138639 E130458 E159323

•
Press the brake pedal (automatic
transmission) or clutch pedal (manual
transmission), and then press the
button for any length of time. An
indicator light on the button illuminates
when the ignition is on and when the
engine starts.
STEERING WHEEL LOCK
Your vehicle has an electronically
controlled steering wheel lock that
automatically operates.
The steering wheel will lock shortly after
you have parked your vehicle and the
passive key is outside it or when you lock
your vehicle.
Note: The steering wheel will not lock when
the ignition is on or when your vehicle is
moving.
Unlocking the Steering Wheel
The steering wheel unlocks when the
system detects a valid passive key inside
your vehicle. If the steering wheel relocks,
switch the ignition on to unlock it.
Note: You may have to slightly rotate the
steering wheel to assist unlocking it.
STARTING A GASOLINE
ENGINE
When you start the engine, the idle speed
increases, this helps to warm up the
engine. If the engine idle speed does not
slow down automatically, have your
vehicle checked by an authorized dealer. Note:
You can crank the engine for a total
of 60 seconds (without the engine starting)
before the starting system temporarily
disables. The 60 seconds does not have to
be all at once. For example, if you crank the
engine three times for 20 seconds each
time, without the engine starting, you
reached the 60-second time limit. A
message appears in the information display
alerting you that you exceeded the cranking
time. You cannot attempt to start the engine
for at least 15 minutes. After 15 minutes, you
are limited to a 15-second engine cranking
time. You need to wait 60 minutes before
you can crank the engine for 60 seconds
again.
Before starting the engine, check the
following:
• Make sure all occupants have fastened
their seatbelts.
• Make sure the headlamps and
electrical accessories are off.
• Make sure the parking brake is on.
• Move the transmission selector lever
to park (P) (automatic transmission)
or neutral (manual transmission)
Note: Do not touch the accelerator pedal.
Note: You must have your intelligent access
key in the vehicle in order to shift the
transmission out of position P.
1. Fully press the brake pedal.
2. Press the button.
The system does not function if:
• The key frequencies are jammed.
• The key battery has no charge.
If you are unable to start the engine, do the
following:
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Gray: Indicates that the system is
temporarily unable to provide a warning
or intervention on the indicated side(s).
This may be because:
•
Your vehicle is under the activation
speed.
• The direction indicator is active.
• Your vehicle is in a dynamic maneuver.
• The road has no or poor lane markings
in the camera field-of-view.
• The camera is obscured or unable to
detect the lane markings due to
environmental, traffic or vehicle
conditions. For example, significant sun
angles, shadows, snow, heavy rain or
fog, following a large vehicle that is
blocking or shadowing the lane or poor
headlamp illumination. See Troubleshooting for additional
information.
Green: Indicates that the system is
available or ready to provide a warning or
intervention, on the indicated side(s).
Yellow or Animated Graphics: Indicate that
the system is providing or has just provided
a lane keeping aid intervention.
Red: Indicates that the system is providing
or has just provided a lane keeping alert
warning.
The system can be temporarily suppressed
at any time by the following:
• Quick braking.
• Fast acceleration.
• Using the direction indicator.
• Evasive steering maneuver.
• Driving too close to the lane markings.
Troubleshooting Why is the feature not available (line markings are gray) when I can see the lane markings
on the road?
Your vehicle speed is outside the operational range of the feature.
The sun is shining directly into the camera lens.
A quick intentional lane change has occurred.
Your vehicle stays too close to the lane markings.
Driving at high speeds in curves.
The last alert warning or aid intervention occurred a short time ago.
Ambiguous lane markings, for example in construction zones.
Rapid transition from light to dark, or from dark to light.
Sudden offset in lane markings.
ABS or AdvanceTrac ™ is active.
There is a camera blockage due to dirt, grime, fog, frost or water on the windshield.
You are driving too close to the vehicle in front of you.
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Driving Aids

Protected Component
Fuse Rating
Fuse or Relay
Number
Auxiliary power point.
20A 2
54
Electronic fan 2 (base).
25A 2
55
Not used (GT500).
—
Not used.
—
56
Air conditioning clutch relay.
—
57
Not used.
—
58
Exhaust valves relay.
—
59
Powertrain control module.
5A 3
60
Not used.
—
61
Anti-lock brakes run/start switch.
5A 3
62
Not used.
—
63
Electronic power assist steering.
5A 3
64
Not used.
—
65
Blind spot information system.
5A 3
66 Rear view camera.
Rear window defroster relay coils.
Vehicle dynamics module.
Not used.
—
67
Headlamp leveling switch (base).
10A 3
68
Signature lighting (GT500).
10A 3
Cigar lighter relay.
—
69
Auxiliary power point relay.
Mass air flow sensor (base).
5A 3
74
Not used (GT500).
—
Rain sensor module (base).
5A 3
75
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Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Fuses

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).
—
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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.
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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.
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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.
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