I drive a 1998 Nissan Micra Equation 1.0 ltr and so far it's been great. However when driving along I hear a clicking rattly noise from inside the car on the passenger rear side. It sounds like it may be coming from the seat belt or inside the seat. I have tried folding the seats flat and clipping them back into place again but its still the same. It's a fairly quiet noise but it can be annoying while driving. I have also tried clipping all the rear seat belts in place. Does anyone know what it might be?