Ford 2015 F-150 Owner's Manual page 311

Note: If your battery has a cover/shield,
make sure it is reinstalled after the battery
has been cleaned or replaced.
Note: Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after handling.
Note: Electrical or electronic accessories
or components added to your vehicle by the
dealer or the owner may adversely affect
battery performance and durability.
Your vehicle is equipped with a Motorcraft
maintenance-free battery which normally
does not require additional water during
its life of service.
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.
It is recommended that the negative
battery cable terminal be disconnected
from the battery if you plan to store your
vehicle for an extended period of time.
Because your vehicle's engine is
electronically controlled by a computer,
some control conditions are maintained
by power from the battery. When the
battery is disconnected or a new battery
is installed, the engine must relearn its idle
and fuel trim strategy for optimum
driveability and performance. Flexible fuel
vehicles (FFV) must also relearn the
ethanol content of the fuel for optimum
driveability and performance. To begin this
process:
1. With your vehicle at a complete stop,
set the parking brake.
2. Put the gearshift in P(Park), turn off all
accessories.
F-150 (TFC), enUSA, Third Printing
Maintenance
3. Start the engine. Run the engine until
it reaches normal operating
temperature.
4. Allow the engine to idle for at least one
minute.
5. Turn the air conditioning on and allow
the engine to idle for at least one
minute.
6. Release the parking brake. With your
foot on the brake pedal and with the
air conditioning on, put your vehicle in
D (Drive) and allow the engine to idle
for at least one minute.
•
7. Drive your vehicle to complete the
relearning process
•
•
If the battery has been disconnected or a
new battery has been installed, the clock
and radio settings must be reset once the
battery is reconnected.
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.
308
If you do not allow the engine to
relearn its idle trim, the idle quality
of your vehicle may be adversely
affected until the idle trim is
eventually relearned.
Your vehicle may need to be driven
10 miles (16 kilometers) or more to
relearn the idle and fuel trim
strategy along with the ethanol
content for flexible fuel vehicles.
For flexible fuel vehicles, if you are
operating on E85, you may
experience poor starts or an
inability to start the engine and
driveability problems until the fuel
trim and ethanol content have been
relearned.