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The exact same thing happened with me as wellOurs did it once for a couple of hours about 6 months ago. The screen went blank, no information about heater controls or radio.
When I got home I switched the ignition off and after a couple of minutes switched it back on again and it was good as gold. It hasn't happened since, at the time l thought that it might have been a low voltage/ battery problem.
Good luck and keep us posted.
Cheers.