Ford 2004 F150 Owner's Manual page 152

Driving
Make sure the corresponding lights illuminate or illuminate briefly. If a
light fails to illuminate, have the vehicle serviced.
• If the driver's safety belt is fastened, the
light may not illuminate.
152
2004 F150 (f12)
Owners Guide (post-2002-fmt)
USA English (fus)
I n f o r ma t i o n P r o v i d e d b y :