From http://www.mynissanleaf.com/viewtopic.php?f=37&t=2773&start=70:
I didn't want to go off-topic in that thread so I am starting this one. I had no idea about this and now it makes me wonder if there is a way to modify the sound. I have thought that the clicker noise was WAY too loud, so if there is some way to make this quieter that would be awesome. Is there a separate speaker for this function?OrientExpress said:The Leaf does not have a traditional analog flasher relay. It is all done electronically in the Body Control Module, complete with a synthesized "clicker" noise.