Been having a repeated issue with my Nav VI we’re I will switch the bike on and the Nav VI will remain dark. No matter how many times I switch the bike off and on the NAV will remain off. If I take it off the cradle and hold the button on the back down for 30 seconds or more it will reset and turn on. I thought it was s charging issue but it does it on a full charge. Fully updated and once it’s on I have no problems.