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.
5. Run the engine until it reaches normal
operating temperature. While the
engine is warming up, complete the
following: Reset the clock. See Audio
System (page 313). Reset the power
windows bounce-back feature. See
Windows and Mirrors (page 83). Reset
the radio station presets. See Audio
System (page 313).
6. Allow the engine to idle for at least one
minute. If the engine turns off, step on
the accelerator to start the engine.
7. While the engine is running, step on
the brake pedal and shift the
transmission to N.
8. Allow the engine to run for at least one
minute by pressing on the accelerator
pedal.
9. Drive the vehicle at least 10 miles (16
kilometers) to completely relearn the
idle and fuel trim strategy.
Note: If you do not allow the engine to
relearn the idle and fuel trim strategy, the
idle quality of your vehicle may be
adversely affected until the engine
computer eventually relearns the idle trim
and fuel trim strategy.
Note: Always dispose of automotive
batteries in a responsible manner. Follow
your local authorized standards for
disposal. Call your local authorized
recycling center to find out more about
recycling automotive batteries.
260
MKZ (CC9) , enUSA
Maintenance
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