FORD 2013 Explorer v.1 - Manual (Page 121)

Transmission Tow/Haul Feature (if equipped) (RTT)
Displays when the Tow/Haul feature has been activated. If the
light flashes steadily, have the system serviced immediately,
damage to the transmission could occur.
Turn signal
Illuminates when the left or right turn signal or the hazard
warning flasher is turned on. If the indicators stay on or flash
faster, check for a burned out bulb.
AUDIBLE WARNINGS AND INDICATORS
Key In Ignition Warning Chime
Sounds when the key is left in the ignition in the off or accessory
position and the driver’s door is opened.
Sounds when the keyless vehicle is in RUN and the driver’s door is
opened (if equipped).
Headlamps On Warning Chime
Sounds when the headlamps or parking lamps are on, the ignition is off
(the key is not in the ignition) and the driver’s door is opened.
Parking Brake On Warning Chime
Sounds when you have left the parking brake on and drive your vehicle.
If the warning chime remains on after you have released the parking
brake, have the system checked by your authorized dealer immediately.
Instrument Cluster 121
2013 Explorer (exp)
Owners Guide gf, 1st Printing
USA (fus)