There`s been a lot of questions raised regarding the Omega
"phantom" sunroof. Usually this problem can be solved by removing and cleaning the black disc within the PCB cover.
Tools req. Small flat-bladed screwdriver or similar. Philips driver and a male T20 driver bit.
Pull sunroof control off, carefully prise out courtesy lamp and disconnect then undo the 2 philips screws securing the motor cover.
Where the control knob sits, depress the two side tangs, push the spindle up and withdraw the cover.
Using the T20, undo the 3 bolts securing the PCB cover and disconnect the two multi-plugs and remove.
Unclip the cover and the PCB and disc will be visible.
This is where the bulb sits. 12V/1.2W, SUN ROOF 90512802
Remove the disc noting which way it`s fitted and clean with switch cleaner or similar.
Here is a pic showing the bulb.
When done fit all back together, reset roof, and hopefully the problem is solved in the majority of cases.