Ford MUSTANG 2022 Owner's Manual page 277

The battery warning lamp flashes three
times to confirm that the reset is
successful.
Battery Management System
Equipped)
The system monitors battery conditions
and takes actions to extend battery life. If
excessive battery drain is detected, the
system temporarily disables some
electrical systems to protect the battery.
Systems included are:
• Heated rear window.
• Heated seats.
• Climate control.
• Heated steering wheel.
• Audio unit.
• Navigation system.
A message may appear in the information
display to alert you that battery protection
actions are active. This message is only for
notification that an action is taking place,
and not intended to indicate an electrical
problem or that the battery requires
replacement.
After battery replacement, or in some
cases after charging the battery with an
external charger, the battery management
system requires eight hours of vehicle sleep
time to relearn the battery state of charge.
During this time, your vehicle must remain
fully locked with the ignition switched off.
Note: Prior to relearning the battery state
of charge, the battery management system
may temporarily disable some electrical
systems.
2022 Mustang (CZG) Canada/United States of America, Vehicles Built From: 27-09-2021, enUSA, Edition date: 202110, First-Printing
Maintenance
Electrical Accessory Installation
To make sure the battery management
system works correctly, do not connect an
electrical device ground connection
(If
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
Install a battery approved for use by our
specifications. See Capacities and
Specifications (page 338).
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 the system to
store diagnostic and adaptive tables.
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.
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