Thanks guys. Finally found the owner's manual. It was in
my trunk. Manual says for this indicator to "take car
to Toyota dealer".

I don't know if it will mess up my extended warrenty contract
if I take the car in somewhere else? I even used the google
search & found the tip on checking the gas cap. I checked it
several times. My car has never given me ANY problems at all
before & this is very fustrating. I really think maybe it has
something to do with filling up the tank. It's just a warning
light & not a red "stop right now" kind of light. I think I'll call my
son & see if he thinks it's ok to drive on the trip.

One of my best buds (friends) is off this weekend & I'm trying
to reach her to see if I can use her car or if she can drive us. Liz.

I'm thinking maybe it's o.k. to drive & just get it checked on Mon.
Geeze, I hate this.