I got my used 2015 Nissan Leaf about a week ago and today there was a new noise. When I shut the car off, it started making a very loud sustained high pitch noise near the dash. I walked out of the car and checked that the noise was not coming from under the hood. It was the loudest by the dashboard.
It went away after about 5-10 minutes. Then when I got home and shut off the car it happened again. It again stopped after about 5-10 minutes.
I recorded some of it if you want to hear:
https://drive.google.com/file/d/1CJkreS ... jMVJb/view
I found out today that the 12 volt battery needs to be replaced. Maybe these are related.
If anyone has an idea of what this is I would appreciate any tips.