I'm having issues with my interior lights too!
They sometimes come on when I open the door, sometimes they don't.
The 'door open' dash light sometimes flashes when the doors open and the interior lights goes on/off rhythmically with the dash light.
The little red door led doesn't flash at all anymore when cars locked.
When I lock the car, (using both remote or whilst driving using interior lock button), sometimes the passenger door doesn't lock and the alarm goes off when I open it.
Sometimes indicators don't flash when I remote lock the car.
When I adjust the driver side mirror the passenger one moves too!
Ahh bloody golfs and their electrical issues!
