Hello, This is my first time on a forum so apologies if not as it should be,
I Purchased the above car 5 weeks today we brought the car home and it seemed fine. When we bought the car the salesman said when you start the car turn the ignition on but leave it a second before commencing to actually start the car as X3s need priming. For two weeks we did this and the car struggled to start to the point that we took it back and the salesman sent it to a supposed BMW specialist who said the cam shaft sensor needed replacing. We picked the car up yesterday after 2 weeks and we seem to have possibly have the same problem. All we wondered was " is this priming of the car necessary does everybody do it" or do we have a problem any help will be gratefully appreciated.