Hello - I am new to this forum as I purchased a 2019 SEL. Looking forward to participating in discussions. Last night I heard a humming noise form the right rear wheel area AFTER I turned off the engine. I waited for five minutes but it did not go away. When I started and stopped the engine, the noise was gone. Any idea what this might be about? I asked the salesperson at the dealer to check in with their service department, so if I get a satisfactory answer, I will write it here. Thank you in advance.