MongoCobra Posted January 25, 2012 Report Share Posted January 25, 2012 Hi all I remember in my '03 Cobra you were able to press a certain combination of buttons to put the message center into a diagnostics mode where it would read out things like engine temps, trouble codes etc. Does anyone know if that functionality exists in the GT500's? thanks Quote Link to comment Share on other sites More sharing options...
MongoCobra Posted January 31, 2012 Author Report Share Posted January 31, 2012 hold down the reset button and start the engine. continue to hold the button until 'TEST' appears in the display. then use the reset button to scroll through the options. There is a lot of information available (most of which I do not understand) but what I found useful was the digital speedo and coolant temp, for example Quote Link to comment Share on other sites More sharing options...
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