Sorted it out myself. Was told the motor needs to be replaced which involved removing the headlining which I'm not prepared to do. Dismantled the switch completely, found one of the miniscule push rods was continuously pressing down on its little switch button, preventing the other buttons from working. Reason, the little retaining clips were broken off allowing the spring-loaded rod to keep pushing down. Of course you don't get these parts separately, but I managed to fix these and presto, panoramic sunroof slides and tilts like new. Hope this helps someone with the same problem.
