Exactly the same problem as the earlier thread below https://forums.garmin.com/forum/into-sports/cycling/varia/1271060 - lights are on at start of the ride but if you check them again after say 15 mins and they have switched off! Only happening since update 3.70 - support says no problems but clearly they are wrong. Please treat as an urgent safety issue and fix / withdraw 3.70. Have had to go back to 3.40 (3.60 is no longer available).
I am currently experiencing a similar issue with my RTL515. I believe this poses a significant safety concern, and it is imperative for Garmin to address this matter promptly. The potential consequences in terms of image damage could be substantial if an incident were to occur. If this problem is not rectified, I am contemplating discontinuing my purchase of Garmin products.
