Ford 2015 EXPEDITION Owner's Manual page 110

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 switched on.
Liftgate ajar
It will illuminate when the ignition is on and liftgate is not
completely closed.
Low Fuel Level
It will illuminate when the fuel level is low or near empty.
Refuel as soon as possible.
Low Tire Pressure
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 an authorized dealer. Refer to Wheels and Tires for more
information.
Low Washer Fluid
It will illuminate when the windshield washer fluid is low.
Parking Lamps
It will illuminate when you switch the parking lamps on.
Powertrain Fault
Illuminates when a powertrain fault has been detected. Contact
your authorized dealer as soon as possible.
Instrument Cluster 109