99 Gs400 Navigations

[skull791]

Hi

Does any one here know how can i get to the gs300/400 98 to 00 year navigation diagnostic screen/ system set-up screen, service screen or the screen witch shows all the options wich we not supostu see it is for dealer only. I know there is a way on 01 and up cars witch factry navigation i figure there is got to be on the older ons too.

Adam

[Lkevon]

This worked on my GS:

1- start the car and turn on the parking lights

2- Hold on to the climate ctrl and audio buttons same time

3- While button still depressed,Turn parking lights off,on,off,on, and off

This should put you in the service nav menu!!!