Ford F-150 2010 Owner's Manual page 16

Instrument Cluster
Door ajar (RTT): Displays when
the ignition is in the on position and
any door is open.
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.
Low tire pressure warning:
Illuminates when your tire pressure
is low. If the light remains on at
start up or while driving, the tire
pressure should be checked. Refer
to Inflating your tires in the Tires, Wheels and Loading chapter. When
the ignition is first turned to on, the light will illuminate for three
seconds to ensure the bulb is working. If the light does not turn on, have
the system inspected by your authorized dealer. For more information on
this system, refer to Tire pressure monitoring system (TPMS) in the
Tires, Wheels and Loading chapter.
Overdrive off (if equipped):
Illuminates when the overdrive
function of the transmission has
been turned off; refer to the
Driving chapter. If the light does not illuminate, have the transmission
serviced soon, or damage may occur.
Transmission Tow/Haul Feature
(six speed transmission only):
Displays when the Tow/Haul feature
has been activated. Refer to the
Driving chapter for transmission function and operation. If the light
flashes steadily, have the system serviced immediately, damage to the
transmission could occur.
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