

An optional 4-air bag supplementary restraint system (SRS) with 4-way occupant protection became available for the 2000–2002 model years. Dual front seat side impact air bags were added (bundled with the ultrasonic rear park assist) for upper torso protection. The side impact air bags can be identified by an oval badge reading "Air bag" attached to the outboard front seat bolsters.
2002 model Expeditions introduced the BeltMinder system which would detect when the driver didn’t have his/her safety belt secured. An audible alarm would sound, in the form of a warning chime, until the driver’s safety belt was fastened.