There was some discussion recently about whether the non-NAV RL was easily capable of becoming a NAV by just inserting the NAV DVD into the player, which just happens to come preinstalled in the trunk of the nonNAV RL. Someone went to the dealer and borrowed the NAV disc to try it but with no luck. I was somewhat skeptical that it would be this easy (but was hoping it woud be!) As for myself, I remained undecided whether the only distinction between the NAV and nonNAV system lies within the DVD player.

Nevertheless, I took my DVD player out of the car last night to inspect it. Immediately I noticed there were two unused wiring plugs on the back of it, with no corresponding wires to plug into it at the car's wiring harness. I became excited and though perhaps the DVD player was in fact the same, and the secret to getting NAV out of it would be to read the wiring diagram in the shop manual to see where the extra wires would go to, and then to create the missing harness. Then I opened up the unit and noticed a large blank space on the left side of the main circuit board. While I did not have a DVD nav player to compare it against, its probable that there is circuitry absent from the nonNAV player (in addition to wiring harnesses in the car).

GREAT NEWS! I just swapped out the changer in my Base RL for one from a Tech RL and all the NAV functions work just GREAT! I NOW HAVE NAV! Voice commands and all. Even the button on the Base headunit thats labelled "compass" works just fine like the Tech head unit labelled "Map/Guide"