2024-2026 Ford Mustang 2 Door Starting and Stopping the Engine User Manual
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Starting and Stopping the Engine for Your Ford Mustang 2 Door Seventh Generation (2024-2026)

STARTING AND STOPPING
THE ENGINE – PRECAUTIONS
WARNING: Extended idling at high
engine speeds can produce very high
temperatures in the engine and exhaust
system, creating the risk of fire or other
damage.
WARNING: Do not park, idle or
drive your vehicle on dry grass or other
dry ground cover. The emission system
heats up the engine compartment and
exhaust system, creating the risk of fire.
WARNING: Do not start the engine
in a closed garage or in other enclosed
areas. Exhaust fumes are toxic. Always
open the garage door before you start
the engine. Failure to follow this
instruction could result in personal injury
or death.
WARNING: Do not use starting
fluid, for example ether, in the air intake
system. Such fluid could cause
immediate explosive damage to the
engine and possible personal injury.
WARNING: Exhaust leaks may
result in entry of harmful and potentially
lethal fumes into the passenger
compartment. If you smell exhaust
fumes inside your vehicle, have your
vehicle inspected immediately. Do not
drive if you smell exhaust fumes.
The powertrain control system meets all
Canadian interference-causing equipment
standard requirements regulating the
impulse electrical field or radio noise.
If you stop your vehicle and leave the
engine idling for long periods, we
recommend that you do one of the
following:
• Open the windows at least 1 in
(2.5 cm).
• Set your climate control to outside air.
PUSH BUTTON IGNITION
SWITCH
E429293
Switching the Ignition Off
When the ignition is on or in accessory
mode, press the push button ignition
switch once without your foot on the brake
pedal.
Switching the Ignition to
Accessory Mode
When the ignition is off, press the push
button ignition switch once without your
foot on the brake pedal.
All electrical circuits and accessories are
operational and the warning lamps and
indicators illuminate.
Note: Your vehicle has a battery saver
feature that shuts your vehicle off when it
detects a certain amount of battery drain,
or after about 30 minutes of inactivity in
accessory mode.
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Starting and Stopping the Engine
Note: The system may not function if the
passive key is close to metal objects or
electronic devices, for example keys or a cell
phone.
Note: You need a valid passive key inside
your vehicle to switch the ignition on and
start the engine.
STARTING THE ENGINE
STARTING A GASOLINE ENGINE
Before starting your vehicle, check the
following:
• Make sure that the parking brake is on.
• Make sure that the transmission is in
park (P) for automatic transmissions
or neutral (N) for manual
transmissions.
1. Fully press the brake pedal for
automatic transmissions or clutch
pedal for manual transmissions.
Note: Do not touch the accelerator pedal.
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2. Press the push button ignition switch.
Note: The engine may continue cranking
for up to 15 seconds or until it starts.
Note: The engine takes longer to start at
lower temperatures. It may crank for several
seconds when very cold.
RESTARTING THE ENGINE AFTER
STOPPING IT
The system allows you to start the engine
within 20 seconds of switching it off, even
if it does not detect a valid passive key.
Within 20 seconds of switching the engine
off, fully press the brake or clutch pedal
and press the push button ignition switch.
After 20 seconds, you can no longer start
the engine if the system does not detect a
valid passive key.
When you start the engine, it remains
running until you press the push button
ignition switch, even if your vehicle does
not detect a valid passive key. If you open
and close a door when the engine is
running, the system searches for a valid
passive key.
ENGINE BLOCK HEATER (IF
EQUIPPED)
ENGINE BLOCK HEATER
PRECAUTIONS
WARNING: Failure to follow engine
block heater instructions could result in
property damage or serious personal
injury.
WARNING: Do not use your heater
with ungrounded electrical systems or
two-pronged adapters. There is a risk of
electrical shock.
WARNING: Do not fully close the
hood, or allow it to drop under its own
weight when using the engine block
heater. This could damage the power
cable and may cause an electrical short
resulting in fire, injury and property
damage.
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Starting and Stopping the Engine
We recommend that you do the following
for a safe and correct operation:
• Use a 16-gauge outdoor extension cord
that is product certified by
Underwriter’s Laboratory (UL) or
Canadian Standards Association
(CSA). This extension cord must be
suitable for use outdoors, in cold
temperatures, and be clearly marked
Suitable for Use with Outdoor
Appliances. Do not use an indoor
extension cord outdoors. This could
result in an electric shock or become a
fire hazard.
• Use as short an extension cord as
possible.
• Do not use multiple extension cords.
• Make sure that when in operation, the
extension cord plug and heater cord
plug connections are free and clear of
water. This could cause an electric
shock or fire.
• If the block heater cord is under the
hood, do not remove the wiring from
its original location. Do not close the
hood on the extension wiring.
• Make sure your vehicle is parked in a
clean area, clear of combustibles.
• Make sure the heater, heater cord and
extension cord are firmly connected.
• Check for heat anywhere in the
electrical hookup once the system has
been operating for about 30 minutes.
• Make sure the system is unplugged and
properly stowed before starting and
driving your vehicle. Make sure the
protective cover seals the prongs of the
block heater cord plug when not in use.
• Make sure the heater system is
checked for proper operation before
winter.
HOW DOES THE ENGINE BLOCK
HEATER WORK
The engine block heater warms the engine
coolant. This allows the climate control
system to quickly respond. The equipment
includes a heater element installed in the
engine block and a wire harness. You can
connect the system to a grounded 110 volt
AC electrical source.
Note: The engine block heater is most
effective when outdoor temperatures are
below 0°F (-18°C). We recommend the use
of engine block heater to improve engine
cold start performance.
USING THE ENGINE BLOCK
HEATER
Make sure the receptacle terminals are
clean and dry prior to use. Clean them with
a dry cloth if necessary.
The heater uses 0.4 to 1.0 kilowatt-hours
of energy per hour of use. The system does
not have a thermostat. It achieves
maximum temperature after
approximately three hours of operation.
Using the heater longer than three hours
does not improve system performance and
unnecessarily uses electricity.
STOPPING THE ENGINE
STOPPING THE ENGINE WHEN
YOUR VEHICLE IS STATIONARY
1. Make sure that the transmission is in
park (P) for automatic transmissions
or neutral (N) for manual
transmissions.
2. Apply the parking brake.
3. Wait until the engine reaches idle
speed.
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Starting and Stopping the Engine
E429293
4. Press the push button ignition switch.
STOPPING THE ENGINE WHEN
YOUR VEHICLE IS MOVING
WARNING: Switching off the
engine when your vehicle is still moving
results in a significant decrease in
braking assistance. Higher effort is
required to apply the brakes and to stop
your vehicle. A significant decrease in
steering assistance could also occur. The
steering does not lock, but higher effort
could be required to steer your vehicle.
When you switch the ignition off, some
electrical circuits, for example airbags,
also turn off. If you unintentionally switch
the ignition off, shift into neutral (N) and
restart the engine.
Only in case of emergency, do the
following:
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1. Press and hold the push button ignition
switch until the engine stops, or press
it three times within two seconds.
2. Shift into neutral (N) and use the
brakes to safely bring your vehicle to a
complete stop.
3. Make sure that the transmission is in
park (P) for automatic transmissions
or neutral (N) for manual
transmissions.
4. Apply the parking brake.
AUTOMATIC ENGINE STOP
WHAT IS AUTOMATIC ENGINE
STOP
Automatic engine stop switches the engine
off if it has been idling for an extended
period to help you save fuel.
HOW DOES AUTOMATIC ENGINE
STOP WORK
Automatic engine stop turns the engine
off. The ignition also turns off to save
battery power. Before the engine shuts
down, a message appears in the
instrument cluster display showing a timer
counting down. If you do not intervene
within 30 seconds, the engine shuts down.
Another message appears in the
instrument cluster display to inform you
that the engine has shut down to save fuel.
Start your vehicle as you normally do.
SWITCHING AUTOMATIC ENGINE
STOP ON AND OFF
1. From the settings menu, press Vehicle.
2. Switch 30min Max Idle on or off.
Note: You cannot permanently switch off
the automatic shutdown. If you switch it
off, it turns on each time you switch the
ignition on.
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Starting and Stopping the Engine
OVERRIDING AUTOMATIC ENGINE
STOP
Note: You cannot permanently switch off
the automatic engine stop feature. When
you switch it off temporarily, it turns on at
the next ignition cycle.
You can stop the engine shutdown, or reset
the timer, at any point before the
30-second countdown has expired by
doing any of the following:
• Pressing the brake pedal or accelerator
pedal.
• Pressing the OK or RESET button
during the countdown.
ACCESSING THE PASSIVE KEY
BACKUP POSITION
If you are unable to start the engine, do the
following:
E386267
1. Open the center console storage
compartment lid.
2. Remove the plastic mat from the
console floor.
3. With the buttons facing upward and
the unlock button facing the front of
your vehicle, place the passive key into
the backup slot.
4. With the key in this position, press the
brake pedal then press the push button
ignition switch to switch the ignition on
and start your vehicle.
STARTING AND STOPPING
THE ENGINE –
TROUBLESHOOTING
STARTING AND STOPPING THE
ENGINE – WARNING LAMPS
Malfunction Indicator Lamp
E67028
If it illuminates when the engine
is running, the on-board
diagnostics system is detecting
a malfunction of the vehicle emission
control system.
If it flashes, engine misfire could be
occurring. Increased exhaust gas
temperatures could damage the catalytic
converter or other vehicle components.
Avoid heavy acceleration and deceleration,
and have your vehicle checked as soon as
possible.
Powertrain Warning Lamp
E415072
If it illuminates when the engine
is running, this indicates a
powertrain or four-wheel drive
fault. If it flashes when you are driving,
immediately reduce the vehicle speed.
Avoid heavy acceleration and deceleration,
and have your vehicle checked as soon as
possible.
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Starting and Stopping the Engine
If both lamps illuminate when the engine
is running, stop your vehicle as soon as it
is safe to do so. Continuing to drive your
vehicle could cause reduced power or the
engine to stop. Switch the ignition off and
attempt to restart the engine. Have your
vehicle checked as soon as possible.
Oil Pressure Warning Lamp
E67022
It illuminates when you switch
the ignition on. If it illuminates
when the engine is running, this
indicates a malfunction. Stop your vehicle
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.
STARTING AND STOPPING THE ENGINE – INFORMATION MESSAGES
ActionMessage
Displays if you exceed the starting time limit. You cannot
attempt to start the engine for 15 minutes. If you cannot start
the engine after 15 minutes passes, have your vehicle imme-
diately checked.
Cranking Time Exceeded
Displays if you are unable to start your vehicle with a correctly
coded key. The system has detected a fault that requires
service. Have your vehicle checked as soon as possible.
Starting System Fault
Displays if the system does not detect a valid passive key.No Key Detected
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Starting and Stopping the Engine
STARTING AND STOPPING THE
ENGINE – FREQUENTLY ASKED
QUESTIONS
Why is the engine idle speed high
when I start the engine?
• The speed the engine idles
immediately after starting is optimized
to minimize vehicle emissions and
maximize cabin comfort and fuel
economy.
Why is the engine not cranking?
The engine will not crank if:
• The system does not detect a valid
passive key.
• The passive key battery has no charge.
• The vehicle battery does not have
sufficient charge.
• The brake pedal is not pressed for
automatic transmissions or the clutch
pedal is not pressed for manual
transmissions.
• The transmission is not in the park (P)
or neutral (N) for automatic
transmissions.
• The starting system has been disabled
after multiple attempts of starting the
engine.
What should I do if the starting
system is disabled?
• You can only attempt to start the
engine for a set number of times before
the starting system temporarily
disables. If you exceed the limit, a
message may appear and you need to
wait at least 15 minutes to start the
engine again.
What should I do if the engine does
not start?
• If you cannot start the engine after
three attempts, wait 10 seconds and
do the following:
1. Fully press the brake pedal for
automatic transmissions or clutch
pedal for manual transmissions.
Note: Make sure that the parking brake is
applied.
Note: Make sure that the transmission is in
park (P) or neutral (N) for automatic
transmissions.
2. Fully press and hold the accelerator
pedal.
3. Press the push button ignition switch.
See Push Button Ignition Switch
(page 137).
Note: The engine cranks for a short period
of time and then stops.
4. Release the accelerator pedal.
5. Press the push button ignition switch.
See Push Button Ignition Switch
(page 137).
Why do I experience different
driving characteristics?
• If you disconnect the battery, your
vehicle may exhibit some unusual
driving characteristics for about 5 mi
(8 km) after you reconnect it. This is
because the engine management
system must realign itself with the
engine. You can disregard any unusual
driving characteristics during this
period.
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Starting and Stopping the Engine
Why does the system not detect a
passive key?
• If the system does not detect a passive
key and you are unable to start the
engine, insert the passive key into the
backup position and press the push
button ignition switch to start the
engine. See Accessing the Passive
Key Backup Position (page 141).
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Starting and Stopping the Engine

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