horn FORD F-150 2021 User Guide

Note:
If the system does not enter
reset mode, try again starting at
Step 2. If after repeated attempts
to enter the reset mode, the horn
does not sound, the system
indicator does not flash and no
message shows in the information
display, contact your authorized
dealer.
5. Remove the valve cap from the
valve stem on the left front tire.
Decrease the air pressure until
the horn sounds.
Note: The single horn tone
confirms that the sensor
identification code has been
learned by the module for this
position. If the horn sounds twice,
the reset procedure was
unsuccessful, and you must repeat
it.
6. Remove the valve cap from the
valve stem on the right front
tire. Decrease the air pressure
until the horn sounds.
7. Repeat the previous step on the right rear tire and then on
the left rear tire.
8. Switch the ignition off.
Note: If the horn sounds twice
again after switching the ignition
off, and repeating the procedure,
contact your authorized dealer and
have your vehicle checked as soon
as possible.
9. Set all four tires to the
recommended air pressure as
indicated on the Safety
Compliance Certification Label. Trailer Tire Pressure
Monitoring System (If Equipped)
Note: Additional equipment may
be required for your vehicle to
support trailer tire pressure and
temperature monitoring. See your
authorized dealer for more
information.
Note: The trailer tire pressure
monitoring system is not a
substitute for proper tire
maintenance. It is your
responsibility to maintain correct
tire pressures at all times.
Note: If a trailer tire is repaired,
replaced or broken down for
service, the screw and valve on the
trailer tire pressure sensor should
be replaced. See your authorized
dealer for details. The trailer tire pressure monitoring
system is an added safety feature
that allows you to view your trailer
tire pressures and temperatures
through the information display.
See
Tire Pressure Monitoring
System – Information
Messages
(page 565). Tire
562
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Tire Pressure Monitoring SystemE235807

Check Every Six Months
The battery connections. Clean if necessary.
The body and door drain holes for obstructions. Clean if necessary. The cooling system fluid level and the coolant system strength. The door weatherstrips for wear. Lubricate if necessary.
The hinges, latches and outside locks for proper operation. Lubricate if necessary. The parking brake for proper operation.
The seatbelts and seat latches for wear and function.
Safety warning lamps, brake, ABS, airbag and seatbelt for operation.
The washer spray and wiper operation. Clean or replace blades as necessary.
Multi-Point Inspection
It is important to have the systems on your
vehicle regularly checked. This can help
identify potential issues and prevent major
problems. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval
to help make sure your vehicle keeps
running great. Multi-Point Inspection
Hazard warning system operation
Accessory drive belt or belts
Horn operation
Battery performance
Radiator, cooler, heater and air conditioninghoses
Engine air filter
Suspension components for leaks ordamage
Exhaust system
Steering and linkage
Exterior lamps operation
Tires including the spare for wear andproper pressure 2
Fluid levels 1
; fill if necessary
666
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Scheduled Maintenance

Glasses Holder..............................................235
Locating the Glasses Holder.......................... 235
Glossary of Tire Terminology..................548
Glove Compartment...................................232
Locking the Glove Compartment................232
Opening the Glove Compartment...............232
H
Headlamp Adjusting See: Adjusting the Headlamps...................... 521
Headlamps......................................................147 Headlamp Indicators......................................... 147
Using the High Beam Headlamps................147
Headlamps – Troubleshooting...............148 Headlamps – Frequently Asked
Questions......................................................... 148
Heated Seats
................................................202
Heated Seat Precautions............................... 202
Switching the Heated Seats On and Off...................................................................... 202
Heating See: Climate Control - Vehicles With:
Automatic Temperature Control.............186
See: Climate Control - Vehicles With: Manual Temperature Control..................................... 191
High Voltage Battery..................................280
High Voltage Battery Precautions
.........280
High Voltage Battery Vehicle Precautions - Hybrid Electric Vehicle
(HEV)
............................................................484
Hill Descent Control...................................330
Hill Descent Control –
Troubleshooting............................................. 331
Hill Descent Control Indicator
................330
Hill Descent Control Precautions..........330
Hill Descent Control – Troubleshooting.........................................331
Hill Descent Control – Information Messages.......................................................... 331
Hill Start Assist...............................................317 Hill Start Assist – Troubleshooting..............317
Hill Start Assist Precautions.....................317
Hill Start Assist – Troubleshooting
........317
Hill Start Assist – Information
Messages........................................................... 317Hitches.............................................................424
Hooking Up a Trailer Using a
Weight-Distributing Hitch......................... 424
Hood Lock See: Opening and Closing the Hood..........503
Horn....................................................................141
How Does 911 Assist Work..........................87
How Does Active Park Assist Work..............................................................346
How Does Adaptive Cruise Control With Stop and Go Work....................................352
How Does a Hybrid Electric Vehicle Work..............................................................249
How Does Auto Hold Work.......................318
How Does Blind Spot Information System Work
..............................................389
How Does BlueCruise Work.....................365
How Does Cross Traffic Alert Work..............................................................393
How Does Drive Mode Control Work................................................................371
How Does Drive Mode Control Work - Raptor.............................................................371
How Does Driver Alert Work....................407
How Does Easy Entry and Exit Work.................................................................112
How Does Four-Wheel Drive Work
........291
How Does Four-Wheel Drive Work - Raptor
............................................................291
How Does Hill Descent Control Work..............................................................330
How Does Hill Start Assist Work
.............317
How Does On-Board Scale Work..........444
How Does Pre-Collision Assist Work
..............................................................396
How Does Reverse Braking Assist Work...............................................................314
How Does Smart Hitch Work..................442
How Does Speed Sign Recognition Work
..............................................................409
How Does Stability Control Work...........321
How Does the 360 Degree Camera Work...............................................................342
How Does the Diesel Particulate Filter Work..............................................................268
How Does the Electronic Locking Differential Work
.......................................301
777
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index