This may have been happening for a while, but I noticed it the other day.
When I turned off my car I did not pull the key from the ignition right away. I was looking for something in the console and noticed a hissing/static sound coming from the dash area of the car. The radio was off. When I pulled out the key the sound stopped.
Is that normal? It sounded like maybe the amp was still on, even though nothing else was.
Not a big deal obviously, but I am curious