Did you dealer add on any aftermarket stuff to jack up the price? Can you post a picture of the button. Did you push it to see what happens? Can you crawl under the dash and try to see what it is connected to? Can you take it back to the dealer and make them tell you what it is?

Evan E. Fusco, MD
'04 Prius/BC moded to the T
'06 Highlander Hybrid Limited AWD w/NAV