it is under warranty had mine done a few times even had the rac out one time ring this number its nissan direct who will send out a man to do it for you

) its called nissan assist on 0800246820 free call too how many of you knew that?! ha ha! (not that it was a free call *tut*) nissan are still looking for a perminant fix for this the bolt at the bottom keeps comming loose on the runner causing the windows to rattle nissan do know about it hope that helps ya mate