Ford F-150 Owner's Manual page 17

Airbag readiness: If this light fails
to illuminate when the ignition is
turned to on, continues to flash or
remains on, have the system
serviced immediately by your
authorized dealer. A chime will sound if there is a malfunction in the
indicator light.
Safety belt: Reminds you to fasten
your safety belt. A Belt-Minder
chime will also sound to remind you
to fasten your safety belt. Refer to
the Seating and Safety Restraints
chapter to activate/deactivate the Belt-Minder chime feature.
Charging system (RTT):
Illuminates when the battery is not
charging properly. If it stays on
while the engine is running, there
may be a malfunction with the charging system. Contact your authorized
dealer as soon as possible. This indicates a problem with the electrical
system or a related component.
Engine oil pressure (RTT):
Displays when the oil pressure falls
below the normal range. Refer to
Engine oil in the Maintenance
and Specifications chapter.
Door ajar (RTT): Displays when
the ignition is in the on position and
any door is not completely closed.
Engine coolant temperature
(RTT): Illuminates when the engine
coolant temperature is high. Stop
the vehicle as soon as possible, switch off the engine and let cool. Refer
to Engine coolant in the Maintenance and Specifications chapter.
WARNING: Never remove the coolant reservoir cap while the
engine is running or hot.
2011 F-150 (f12)
Owners Guide, 3rd Printing
USA (fus)
Instrument Cluster
17