I have a 2019 Lexus ES350. I complained about this problem soon after getting the car. I was told that’s the way the system was designed and there is nothing the dealer can do about. I contacted Lexus Customer Service and they told me the same thing. I took the car to a high end car audio shop who installs custom systems in Porches and Mercedes. My intention was to install new speakers in the rear to correct the problem. The expert in the audio shop listened to the system in my Lexus ES350, played around with the controls a little and examined the speakers. He told me that changing the speakers would make no difference at all. The problem is in the radio itself. It’s not just a radio, it’s a central brain that controls many of the vehicles other functions. The radio and speakers are programmed by Lexus to perform a certain way and cannot be changed except by Lexus. They need to make a firmware fix, but for some reason, Lexus refuses to do this and correct the problem. And it’s not just the standard system that has the problems. It’s the Mark Levinson systems too. This will be my last Lexus. They seem indifferent to the problem.