Just a quick update - I read through all teh online manuals from the link on this site and got more convinced my fault lay with the flip up glass warning switch. As this switch is normally open when the glass is closed I just removed the trim from the tailgate and disconnected the switch at the local connector and hey presto everything works fine. Apparently the switch isn't seviceable on its own and I don't fancy ******* out more for a new one so its just been left disconnected, I can't imagine me forgetting teh glass is up living in Scotlans as its freezing here
Next jobs now are te ABS sensor light comes on intermittantly and the cruise control isn't as smooth as i feel it should be.
I even go the code fr my radio so another result
Time to chill with a few beers for the night.