FORD 2009 F-550 v.1 - Manual (Page 18)

Powertrain malfunction/Reduced
power/Electronic throttle
control (RTT): Displays when the
engine has defaulted to a
“limp-home” operation or when a
transmission problem has been
detected and shifting may be restricted. If the light remains on, have the
system serviced immediately by your authorized dealer.
Traction Control™ (RTT) (if
equipped): Displays when the
Traction Control™ system is active.
If the light remains on, have the
system serviced immediately by
your authorized dealer. Refer to
Traction Control™ in the Driving chapter for more information
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).
2009 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)
Instrument Cluster
18