benhirsh

My entire computer system controled through the GPS screen seems to be going out.

Most of the time when I start the car the screen is dark and all functions controlled by that screen are dead. Messing with the buttons seems to sometimes bring it back to life, but the system will freeze up easily.

Turning on and off the car or even bumping the brakes can sometimes make it work for a short time.

What is this! Any help will be appreciated.

lexusaudio

you have a 4th genration navigation system which up to now have not had many problems. you might try putting a dvd cleaner disc in the computer for the dvd . also may try an updated gen4 version 4.2 disc or higher 5.1 6.1 7.1 dvd map but be sure to get gen 4 disc. the version 3.1 4th gen disc that came in your 2004 ls430 were defective and were recalled by lexus several years ago. the program is over now. do you know if original disc was ever upgraded? email me at egusman@woh.rr.com for more info on what dvd map to try next and their cost(the one pictured is only 10.00). also more info on the dvd cleaner disc. picture of the corrective disc is shown. part number 86271-33043