guys i have changed the setting of my system into jp-nav and now it says plz enter the correct cd of th enavigation and i have already replace it with the latest dvd of naigation which is actually a copy
if any on ehave a clue about how to reset the navigation screen coz till now i cant change it which i m surprised that i ccant go back to the setting it self again since it onlly says enter the right cd for programing the navigation system
plz help

 

see guys i used this way and changed the locations setting from the menu he gets


and chosed jp- instead of us- and that was like repairing the system and then a message saying plz enter the correct cd to continue performing

 

Im just guessing that sending into JP mode now, the system is expecting a JP version DVD and not US spec. So screen will not even go beyond error? Have you pressed other buttons knce error screen comes on? Get into climate or audio?

 

the climate audio and all other buttons works in the best of condition except for the menu voice and destination are the three buttons that dont work

 

http://db.tt/3uYhBiQF

that wht appears and like i said those r the only buttons that don't work ill try dropping by an electronic shop and checking the latest version

 

another issue as of today the smart key isnt functioning as its suppose to and im using it as a sub key ??
and whn i shift to reverse the car the back camera doesnt functions either ???
plz upgrade me with the needful


and i got this solution from google does it works
Switch off your car (I have 2005 Ls4300). The same steps could be followed on cars that have the same navigation system.


2Open the trunk.
3Take out the cover, as if you are looking for your spare tire. You will find a metallic box on the right.
4Remove the two screws that stabilize the box with the body of your car.
5Plug out all the connected wires to the box. You won't need to memorize the places of the wires, since every wire has a unique shape and size that fit into its specific place.
6Take the box to a lightened place where you can see things clearly.
7Note that from the back, you will find 8 screws. Open them all
8Gently, remove the cover. You will find two electronic boards.
9Gently, take the left one, and switches it over, where you can see its bottom side.
10Find a ribbon cable that connects the left section and the right section of the whole electronic board. Carefully, with your fingers, take off the brown small tool that stabilizes the ribbon cable with the board. This way, the ribbon will be pulled out... leave it for few seconds and then replace it to its old place. You have to lift the brown part up and that disengages the ribbon. You do it with your fingers. If you need a tool you are doing it wrong.
11Replace everything again to its old condition, and take the whole box and replace it in your car. This worked perfectly for me!
12Turn your car on. Wait for the system to load. You will find a new screen with bright green colours asking for not powering off!

 

and guys im finally done and atlast its working truely
its the cable between the two boaeds as soon as i removed it for few minites and refixed everything back to its place mysytem restaarted

 

guys this is wht have come up now and its working now ill just purchase the new gcc map dvd and updateit

 

DO NOT mess with the secret menus! You are lucky, man, that you had it fixed. Some ppl didn't and had to get new nav unit.

 

aight broo
its nice to have some good help from u guys
luv u all lexus family members

 

Did the same thing myself. Thank goodness for this forum. It is the equivalent of rebooting.