Were there ever any responses to your question about Mexico map data? In my case I have a 2010 IV and I live the winter south of Cancun. This year I'm going to drive down and would like to have Mexico highways on my navigation system. John
ok, I asked Toyota HQ and a local dealership, both said that Toyota does not have one. The dealership suggested that perhaps Denso (the manufacturer of the navi) might have one, but it would cost at least $200+ for the DVD. It's cheaper to just buy a 4.3" - 5.0" TomTom with Mexico maps on ebay for $72-95 (refurbished).