So my Nav VI entered crazytown on Tuesday--screen not following the bike icon, randomly switching screens, not responding to wonder wheel inputs. I bought it with my 2017.5 R1200GS in 2/18, so I thought it would be out of warranty. But I'm stunned to report that Garmin has come through big time. I called them up, got through to a well spoken rep immediately. I gave him the serial number and I explained the issue and he immediately offered to replace it with a new one. So easy. So great. I did not expect such good customer service. He said it's a hardware issue. Good job, Garmin, standing behind your product!