I have a 2002 toyota prius.
It does not have a navi but has the buttons in the dash to help on (map, destination)
In which can I discover pricing and installation details for a navigation system?
Answer by gdv529
http://www.crutchfield.com – they have everything – typer in the make and model and they’ll hook you up
Answer by bcalin@ameritech.net
Examine eBay. There is a single going appropriate now for about $ 500 as of these days (5/27/07). It will be a hit or miss because this is a pretty uncommon newer vehicle. Also verify with junk yards locally. Some junk yards accross the nation use eBay as nicely. Very good luck!

I also had a 2002 Prius, but mine had the nav system. One of the big rages back then was that the buttons were there, but the nav system wasn’t, unless you paid for the option. On the original Prius newsgroup, it was hashed back and forth for literally months, and some really bright people tried to do it. Unfortunately, what they found out was that the Prius was wired for the nav system – or it wasn’t – at the factory, and that it could not be added afterwards. Now, that is only for the system that Toyota included with the Prius. You can absolutely add an aftermarket nav system to the Prius, but it will not interface like the original into the MFD. You might try http://www.coastaletech.com as they did a ton of add-ons for all of the Prius, though I don’t know if they were ever successful with adding a fully integrated nav system from scratch. Sorry to be the bearer of bad news, but I’m afraid unless someone has done a ton of work since then,it is the answer. Something to consider is that for you to add the factory nav system might be so expensive that it might cheaper to by another Prius with it in the car already. Good luck.
Aftermarket is your only real choice. Factory option is un-godly expensive to add on. I work at a Toyota dealership and the module alone is $ 14,000.00 (yes thats fourteen!)