Yep it is stil under warranty...I have joined quite a few of these forums, and luckily (or unluckily) it is a common problem. On of the other memebers told me exactly what it was. The Depahaser ......(i cant remember the last part of the part name!!) I went to Renault equipped with the details of all the parts that needed to be changed, including the
(that they initially said did not need changing...) a diagram of what the part looks like and how it should be changed, the fault number for their technicians and everything!!! I basically did their job for them - everything except change the parts!!! If anyone else has the same problem I still have all the information saved on my pc, so if u ever need it, drop me a line.
They changed it all and (touch wood god willing) all has been running perfect!! It cost just over £400 but my car was still under warranty.