hi guys my update.
car is still off the road with the problem.i have managed to check what i am able to do and still cannot find the fault.i have had an offer of a couple of people from another lexus club to come up from london and have a look for me but at present have not been able too so far.really hope i can get this sorted shortly as shows will soon be coming up and i cannot attend yet.will keep you all posted.thanks for all the replies.
cheers kev.