It wasnt the bcu after all as was suggested to me by 1 person who managed to find the time to comment

Just tried removing my tow ball. A 23mm is too small and a 24mm is too big. Think I'm gonna end up cutting them off

Well no 1 actually bothered to try and help out in any way but I sorted it myself. Wont bother to come to this site again. For advice.useless

He got it to fire up but that's all. Just dont think he knows how to use nanocom and dont think he matched it up properly. It's a night mare.

The fuse box is fine. I think the guy who reprogrammed the new bcu didn't do it right. Not sure he knew how to use it

. hi i have a simular issue if anyone can help, if you press the horn it brings on 3 amigos but no horn, sometimes makes abs pump vibrate, central locking not working, and button on dash does same as horn, turn lights on and that also brings on 3 amigos, was told it was a bcu problem so changed...