My2010 EX 35 has been through many different automatic car washes with the antenna on and nothing has happened to it. It's hard to imagine that on a luxury car you have to unscrew the antenna go through a car wash, wait until all dries out and screw it back in. But the moon roof leaks a few drops every time. Maybe yours does too. While going through a car wash slide the fabric unclear part back, keep the glass part closed, and you'll notice the leakage during the power wash. I'll take it to the dealer for that matter.