dmbech

Not sure how this is a pirated DVD copy question. The original questions was how to identify what generation nav system you have. Now I have an additional data point which is a Gen 2/3 10.1 DVD works fine in my system. So two gen 3 DVDs work and a gen 4 DVD does not work. That would lead me to believe I have a gen 3 nav system in a 2005 LS430 which is contrary to everything I have read and the reason for the original question. There must be a way to identify which gen nav system is installed by physical inspection or some other means. Something more definitive than a list someone published.

Is there a definitive way to tell what generation nav system you have? I have a 2005 LS430 which by all accounts is supposed to have a gen4 nav system. However, when I try to use a gen4 10.1 DVD I get the warning that maps can't be read. When I use a gen3 7.1 DVD everything works fine. So this would lead me to believe I have a gen3 nav system which is contrary to all the documentation I have read. Any ideas? Thanks.