Hi there! I just bought my mach-E a few weeks ago and immediately noticed there was an issue with the front left speaker. Every 10-15 minutes, the tweeter pops, then hisses for about 10 seconds, and then pops again. Today I brought it into the service center for repair, and I was told that this is a "normal characteristic," and to refer to FORD Special Service Message 49810. I can't seem to find any record of that service message anywhere. Does anyone know where I can go to find it?