skull791 Posted March 13, 2003 Share Posted March 13, 2003 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 Quote Link to comment Share on other sites More sharing options...
Lkevon Posted April 19, 2003 Share Posted April 19, 2003 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!!! Quote Link to comment Share on other sites More sharing options...
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