FORD 2012 F-550 v.2 - Manual (Page 16)

WARNING: Under engine misfire conditions, excessive exhaust
temperatures could damage the catalytic converter, the fuel
system, interior floor coverings or other vehicle components, possibly
causing a fire.
Check fuel cap: Displays when the
fuel cap may not be properly
installed. Continued driving with
this light on may cause the Service
engine soon warning indicator to
come on. Refer to Fuel filler cap in
the Maintenance and Specifications chapter.
Low fuel (RTT): Displays when
the fuel level in the fuel tank is at
or near empty (refer to Fuel gauge
in this chapter).
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.
Brake system warning light: To
confirm the brake system warning
light is functional, it will
momentarily illuminate when the
ignition is turned to the on position
when the engine is not running, or in a position between on and start, or
by applying the parking brake when the ignition is turned to the on
position.
If the brake system warning light does not illuminate at this time, seek
service immediately from your authorized dealer. Illumination after
releasing the parking brake indicates low brake fluid level and the brake
system should be inspected immediately by your authorized dealer.
P !
BRAKE
Instrument Cluster
16
2012 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)