PRNDS problem

[Skitty1988]

I have a 2008 A6 3.0 v6 tdi Quattro. When I go to start the car in a morning it starts fine but there is no PRNDS illuminated. After 20-30 mins of the car ticking over the PRNDS will then appear. It will select gear and change smoothly. But if I leave it turned off for 2-3 hours the whole process starts Augean. 
Any help will be much appreciated.

[Steve Q]

I definitely would recommend a diagnostic check. But I wonder if the gearbox module is on the way out. Or the selector. 

[Matt9591]

Hi did you ever get to the bottom of your issue as I’m having the same problem.