Ford F-150 Owner's Manual page 111

Beltminder Warning
Sounds when a safety belt is unfastened
in an occupied seat and your vehicle is
moving.
Door Ajar Warning
Sounds when any door is not completely
closed and your vehicle speed exceeds
3 mph (5 km/h).
Headlamps On Warning
Sounds when you remove the key from the
ignition and open the driver's door and you
have left the headlamps or parking lamps
on.
Key in Ignition Warning
Sounds when you open the driver's door
and you have left the key in the ignition.
Keyless Warning Alert
Sounds the horn twice when you exit your
vehicle with the intelligent access key, after
the last door is closed and your keyless
vehicle is in RUN, indicating your vehicle is
still on.
Rear Park Aid Warning
A detection warning sounds when
obstacles are within a certain range of the
bumper area. The system turns on
automatically whenever you switch the
ignition on.
Parking Brake On Warning
Sounds when you have left the parking
brake on and drive your vehicle. If the
warning chime remains on after you have
released the parking brake, have the
system checked by your authorized dealer
immediately.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201607, Second Printing
Instrument Cluster
Service Advancetrac Warning
Sounds when there is a malfunction with
the Electronic Stability Control (ESC) or
Rollover Stability Control (RSC) system.
(If Equipped)
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