I think I need to update my MAP Info on my GS400. Is it posibile to update the map or it's firmwares??? What's the latest map info on the '99 gs400? My car displayed July "98. If posibile, do you how much it will cost and where can I get it done?

Thanks,
Fusion400

 

For 1999 models you are allowed one free update. So just go to the dealer. Has it ever been updated? I'm pretty sure the most current is sept 99. If you had to pay for it, maybe around $300.00 - $350.00.