Originally Posted by JLeighs

Me again... things just keep happening. Is there a link between the security siren and the roof control module that you are aware of. I tried to replace the siren today, and it has caused me no end of issues. I plugged it in and went to test it and nothing happened. When removing it, it clearly was not happy as there was definatley a smell of burning. It resulted in my central locking not working. The car lights flashed so it was seeing the fob. I eventually traced that down to fuse 9, which I replaced and the central locking started working again. Thought I was back to status quo only my roof is now not working. When popping the roof the windows don't go down (it was all working before fitting the siren) and the windows work fine just using the buttons. The roof was giving me flashing light so I disconnect the battery for 10 mins. This is now stopped the flashing lights but it still won't work. Have also pulled fuse 5 to no avail.

My question is, in your vast experience, do you think it is more likely to be the roof control board in the boot or could the faulty siren damage the BCM?