Kyleonsite, I've done a fair bit of online research on com2000s but I think the main problem is that people rarely seem to need to swap them over, so it isn't really known whether you need the exact same replacement or not.
What I will say is that there seem to be hundreds of different com2000 part numbers, far far more than there are trim versions, part manufacturers and years of production. That suggests that you might not need the same part number, at least in some cases. But I can't promise anything!
It is notable however that their casing comes in a much smaller range (half a dozen IIRC?) of different shapes. If you can't find the same part number com2000, I can only suggest you look for one which has the same shape casing as yours and
exactly the same stalks (pay
close attn to the stalk buttons - zoom right in on photos), and cross your fingers.
Pondweed, I had to search through your various disjointed threads to find out what you are talking about! It would help if you linked to them or explained things better, for those of us who haven't seen them.
If in this post
https://www.berlingoforum.com/thread-213...#pid137750 "silicone grease" means WD40, then it could indeed be the cause of your problem. WD40 is electrically conductive - you'll find lots of warnings not to spray it on electrical bits in the engine bay. So at a guess, assuming the seat belt problem began when you did this spraying, you might have shorted out some of the pins/sockets in the com2000s multiway connector, or some other connector in there.
Next time, use switch cleaner or contact cleaner.
BTW, I don't think I get any "siren" sound if the seatbelt isn't plugged in? I will have to try tomorrow to be sure. Could be down to different trims/specs?