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Check fuel cap (RTT): Displays
when the fuel cap may not be
properly installed. Continued driving
with this light on may cause the
Service engine soon warning light to
come on. Refer to Fuel filler cap in
the Maintenance and Specifications chapter.
Engine coolant temperature
(RTT): Displays when the engine
coolant temperature is high. Stop
the vehicle as soon as safely possible, switch off the engine and let it
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 fuel (RTT): Displays when
the fuel level in the fuel tank is at
or near empty (refer to Fuel gauge
in this chapter).
Door ajar (RTT): Displays when
the ignition is in the on position and
any door is open.
Transmission Tow/Haul Feature
(automatic transmission) (if
equipped): The Tow Haul light
remains illuminated as long as the
Tow/Haul feature is activated. Refer to the Driving chapter for
transmission function and operation. If the light remains illuminated and
will not cancel using the Tow/Haul switch located on the end of the gear
shift lever, have the system serviced immediately or damage to the
transmission could occur.
Instrument Cluster
18
2010 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)