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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 (if
equipped): 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.
Hill descent (if equipped):
Displays when using the hill descent
mode. Refer to the Driving chapter
for transmission function and
operation.
Transmission Tow/Haul Feature
(if equipped): 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.
Instrument Cluster
18
2011 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)