User Manual - Page 474

For 2021 F-150 King Ranch®.

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5. Start the engine.
6. Check for leaks.
Note: The water in fuel warning lamp turns
off after approximately two seconds with
the engine running.
Note: The in-tank pump will turn off
automatically after approximately 30
seconds.
CHANGING THE FUEL FILTER
- DIESEL
Your fuel filters must be changed at the
correct service interval or when you see the
low fuel pressure message appear. Refer
to scheduled maintenance for the correct
service interval.
CHANGING THE FUEL FILTER
- GASOLINE
Your vehicle has a lifetime fuel filter that
integrates with the fuel tank. It does not
need regular maintenance or replacement.
CHANGING THE 12V BATTERY
WARNING: Batteries normally
produce explosive gases which can
cause personal injury. Therefore, do not
allow flames, sparks or lighted
substances to come near the battery.
When working near the battery, always
shield your face and protect your eyes.
Always provide correct ventilation.
WARNING: When lifting a
plastic-cased battery, excessive pressure
on the end walls could cause acid to flow
through the vent caps, resulting in
personal injury and damage to the
vehicle or battery. Lift the battery with a
battery carrier or with your hands on
opposite corners.
WARNING: Keep batteries out of
reach of children. Batteries contain
sulfuric acid. Avoid contact with skin,
eyes or clothing. Shield your eyes when
working near the battery to protect
against possible splashing of acid
solution. In case of acid contact with skin
or eyes, flush immediately with water for
a minimum of 15 minutes and get prompt
medical attention. If acid is swallowed,
call a physician immediately.
WARNING: Battery posts,
terminals and related accessories
contain lead and lead compounds,
chemicals known to the State of
California to cause cancer and
reproductive harm. Wash your hands
after handling.
WARNING: This vehicle may have
more than one battery. Removing the
battery cables from only one battery
does not disconnect your vehicle
electrical system. Make sure you
disconnect the battery cables from all
batteries when disconnecting power.
Failure to do so may cause serious
personal injury or property damage.
The battery is in the engine compartment.
See Under Hood Overview (page 456).
Your vehicle has a maintenance-free
battery. It does not require additional
water during service.
471
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202007, First-Printing
Maintenance
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