on my Lucid air when I unplug my power cable from my car after having finished charging below 80% a grinding sound comes from the rear right wheel well that lasts for about 10 seconds and then stops if I charge my car to 80% this never occurs, has anybody had that happen? I was able to show the Mobile technician when he came out for my two-year warranty check and he heard it and I had it recorded. He thinks it might be a some kind of cooling pump for the battery.