I have a 2018 Touring (still under warranty, I believe), and the sound quality when using my phone with it is awful. I can hear the other person fine, but the person I'm talking to has great difficulty understanding me. I believe this is due to road noise, since it isn't too bad at low speeds, but is awful at highway speeds. I know others have posted that they get a microphone or even the whole unit replaced, and I'd like to have a dealer check mine out. I'm hesitant to take it to the dealer if I have to pay and the fix doesn't work, or they say there is nothing wrong with it. So if I take it to a dealer, complaining about sound quality, who has to pay for them to diagnose the problem? If they say there is no problem, do I have to pay? I am not optimistic about getting this fixed, and don't want to waste a lot of money for nothing. Thanks.