bobster99

I purchased a 100% genuine Upgrade disk 11.1 for my 2002 SC430 and the system is unable to read the new disk. I am 100% sure it is genuine, full jewel case, instructions and all. The problem is that the nave system just won't read the disc.

The strange thing is that the original disc that came with the car in 2002 works fine.

Any suggestions?

I have considered upgrading to the newest nav system that will fit in my 2002 but that looks like a $3-500 investment and I don't know if I want updgraded nave system that bad...

bacardi11

iTrader: (1)

hi
go on ebay get a use nav.4 for about 300 I paid 325 for my nav. 4 you can't go wrong its plug and play. the 2002 only has the 2/3 nav.
this is the highest you can go.

DarthSid

I did the same as Bacardi11 several years ago. It was a snap, just plug and play. Just remember you will likely need to change the zone on the device since it could come from a different part of the country. Denso is the manufacture used by Lexus for this part.

bacardi11

iTrader: (1)

also you will need the nav. 4 disk

texsexlex

iTrader: (3)

...you might have the disk checked also, duplicating has gotten really easy for the people that do this for a living. I bought a "100" genuine disk a few years back off ebay & it didn't work either...lol...after repeated calls,the seller finally refunded my money & told me he hadn't had any issues with his copies, but in one other vehicle

mandyfig

Guys you need to get a real Gen2-3 NAV disc, Sewell would be the place.

Unless you go for the whole GEN X upgrade (means the NAV hardware has to change, like what VVtiBob did), you need to keep up with the current GEN2-3 NAV Disc upgrade for our cars.

mandyfig

That means 12.1 or 13.1 NAV Upgrade Gen2-3.

bobster99

I just purchased a Gen 4 Unit off eBay for $150 Shipped with a 2004 or 2005 disc. I know that I will eventually have to move up to a newer disc but Gen 4 discs seem to be cheaper and easier to find. Thanks for the advice.