In many visits to the 17" touch screen, I haven't been able to actually turn it off temporarily. It is possible to dim the screen down to its lowest point using the display settings screen, but this also affects the driver display LCD. I can envision times, particularly at night when alone in the car, when it would be convenient and easier on the eyes to simply switch off the 17" display while leaving the driver display LCD on. Then, when one wants to bring it back to life to adjust a control, simply tap it to turn it on. Perhaps a "display off" button on the display adjustment screen under the swipable brightness switch?
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Oops, mods -- maybe move this to Model S: User Interface...sorry
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Oops, mods -- maybe move this to Model S: User Interface...sorry