Hi. We have owned a Nissan Note 1.4SE 2007 for about 3 months and throughout this time when locking the doors remotely there is a very loud buzzing noise which comes from the drivers door (doors do lock and unlock ok). Is this noise an intentional audible confirmation of locking or is it a potential problem? The owners manual does not mention it at all. Car is still under warranty at the moment but not from a Nissan dealer so they dont know the exact details of the model. Cheers, Ian.