I guess it is not the illumination but the temp figures that blinks? My display can do the same thing once in a while, bad contact or whatever, but most of the time it works so I have not yet tried to figure out...

__________________
-94 E 36 AMG Coupé, Brilliant Silver
-98 G 500, Obsidian Black
-05 Mini Cooper, Solid Black
-97 993 Carrera S, Ocean Blue