Dave
As previously noted by Jimsmith, the doors have to be closed for this to work, in other words, get in the car and close the door, don't leave any of the doors open.
Then proceed like this:
Key on (position 2, all idiot lights come on, engine NOT running)
PUSH the trip odometer reset knob twice rapidly, the time/distance remaining for FSS is shown.
PUSH button in and hold it in.
Turn key OFF (DON"T release the button!)
Turn key back to position 2....KEEP holding the button down!
You'll need to hold it down over 10 seconds, you'll hear the beep and 10000 will be the new display. DON'T release the button until you hear the beep, wait at least 15 seconds before deciding on giving up.

Gilly