2018 RTL. Got ready to ride a few days ago and parking brake would not release. Over the next several days, I tried all different combinations and sequences and nothing worked. I could hear a relay or something when I pressed the switch, and it would silence the alarm. I called the dealer this morning and they said to bring it on over. I relieved the tension on the parking brake cable at the rear wheel by loosening the nuts, and put it on my trailer. I tightened the nuts so the brake would hold and it started working. I rode for a couple of hours and it's worked just fine ever since. I cancelled the appointment put a 12mm wrench in my trunk and I'll see what the future holds. I'll report back here with any changes.

Rick