As title - interior light and boot light only work intermittently. Obviously fuse and bulb are fine, but beyond that I'm not really sure what it could be. Any ideas?

check the hood switch

check the hood switch

Does that control the interior lights? My bonnet switch is currently disconnected and I've not gotten around to fixing it yet, but it's been that way for a while. The issue with the lights is fairly recent.

Mine was broken and the interior light was flickering while driving

I had same issue. I fixed it by putting the switch on the hood lock-mechanisim to "closed" position and locking it in that position... Now the hood "seems" to be closed hole time (even if I open it) but I don`t have any issues with interior lights.

Cheers

Edited 25 February, 201511 yr by Arminator

I had same issue. I fixed it by putting the switch on the hood lock-mechanisim to "closed" position and locking it in that position... Now the hood "seems" to be closed hole time (even if I open it) but I don`t have any issues with interior lights.

Cheers

UPDATE regarding interior lights functionality:

 

As mentioned above I thought that I solved my troubles by fixing the hood switch. Apparently, something else was the problem because after some time the same issue appeared. Anyway I have finally found the cause of it: it is a blue connector on comfort control module (under the steering wheel) which has a loosing contact with the pins. Found this on some German forum with the same issue appearing on MKIV. Try shaking/moving it when connected to CCM with lights on to assure that this is the issue.

I fixed it by twisting the pins (clockwise/counterclockwise - it does not meter which way) on CCM to improve contact. I have tested it and it works fine since then.

Hope you will find it useful.

Cheers

Edited 19 March, 201511 yr by Arminator