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Note: If your battery has a
cover/shield, make sure it is reinstalled
after the battery has been cleaned or
replaced.
Note: See an authorized dealer for low
voltage battery access, testing, or
replacement.
When a low voltage battery
replacement is necessary, see an
authorized dealer to replace the low
voltage battery with a Ford
recommended replacement low
voltage battery that matches the
electrical requirements of the vehicle
To ensure proper operation of the
battery management system (BMS),
do not allow a technician to connect
any electrical device ground
connection directly to the low voltage
battery negative post. A connection
at the low voltage battery negative
post can cause inaccurate
measurements of the battery
condition and potential incorrect
system operation.
Note: If a person adds electrical or
electronic accessories or components
to the vehicle, the accessories or
components may adversely affect the
low voltage battery performance and
durability and may also affect the
performance of other electrical
systems in the vehicle.
For longer, trouble-free operation,
keep the top of the battery clean and
dry. Also, make certain the battery
cables are always tightly fastened to
the battery terminals.
If you see any corrosion on the battery
or terminals, remove the cables from
the terminals and clean with a wire
brush. You can neutralize the acid with
a solution of baking soda and water.
When a battery replacement is
required, the battery should only be
replaced with a Ford recommended
replacement battery that matches
the electrical requirements of the
vehicle.
Because your vehicle’s engine is
electronically-controlled by a
computer, some engine control
settings are maintained by power
from the low voltage battery. Some
engine computer settings, like the idle
trim and fuel trim strategy, optimize
the driveability and performance of
the engine. Some other computer
settings, like the clock and radio
station presets, are also maintained
in memory by power from the low
voltage battery. When a technician
disconnects and connects the low
voltage battery, these settings are
erased. Complete the following
procedure in order to restore the
settings:
1. With the vehicle at a complete
stop, set the parking brake.
2. Shift the transmission into P.
3. Turn off all accessories.
4. Step on the brake pedal and start
the vehicle.
287
Maintenance
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