FORD 2013 F-550 v.3 - Manual (Page 102)

Fasten Safety belt
It will illuminate and a chime will sound to remind you to fasten
your safety belt.
High Beam
It will illuminate when the headlamp high beam is switched on.
It will flash when you use the headlamp flasher.
Hill Descent (if equipped)
Illuminates when hill descent is turned on.
Low Fuel Level
It will illuminate when the fuel level is low or near empty.
Refuel as soon as possible.
Low Tire Pressure Warning
It will illuminate when your tire pressure is low. If the lamp
remains on with the engine running or when driving, check
your tire pressure as soon as possible.
The lamp also illuminates momentarily when you switch the ignition on
to confirm the lamp is functional. If it does not illuminate when you
switch the ignition on, or begins to flash at any time, have the system
checked by your authorized dealer.
Powertrain Malfunction/Reduced Power/Electronic Throttle
Control
Illuminates when a powertrain fault has been detected. Contact
your authorized dealer as soon as possible.
Instrument Cluster 101
2013 F-250/350/450/550 (f23)
Owners Guide gf, 3rd Printing, December 2012
USA (fus)