UT800 and Varia RTL light network not forming

I also have problems with the RTL515. On my Edge 530 everything was working very well. But I've got a 1040 since 2 weeks and I have the same problems as descriped in the other posts. No network for the light, radar seems to work most of the times. All of my other sensors (heartbeat, powermeter, shifters, deraillers, speed) they all are working fine.

And Garmin you can contact me directly

I live in Holland

I tried to remove everything and connect again, unit back to factory settings

None of my sensors reliably connect with 830 so i don't have high hopes generally. Light network software is the problem. Bontrager app will help only one bug with headlight not able to switch to flash mode, otherwise, it's still using Garmin software to talk to sensors. The Light network is so random in connecting to lights, just can't ride with that. What's ridiculous it's enough to search for sensors (can cancel immediatelly) to recover connections.

I even have Garmin remote control, that one never ever connected to the unit automatically.

My Edge 1040 too has difficulties to form a lights network with multiple lights. I'm reporting from Germany and you may contact me directly.

- Edge 1040 non-solar, FW 16.13
- Varia RTL515, FW 3.33
- Bontrager Flare RT, FW 1.024
- Bontrager Ion RT, FW 1.027
- several PMs (P2M and Stages), Speed Sensors (Garmin, OSync) and HR strap (Garmin rigid); all without problems afaik (no drop-outs in Golden Cheetah)
- older SRAM Red shifters occasionally re-connect
- no Phone connection or WLAN active
- light-network configured to start the lights on timer start

The Varias light and radar are connected. The radar is basically allways available, de- and reconnects only very seldom during rec/ride, never deconnects permanently (by its status icon).

If all lights are available (Bontragers lights off but Ant+ in standby) and Edge and Varia where off (Varia switched on first or vice versa), formation of the lights network usually fails (in rare occasions it just works.), typically max. 1 Bontrager is recognized, the other lights have wrong states even after some minutes. It does only recognize the Varia light once the timer is started and most times then still requires to switch lights off and on again once under "sensors", to include them all into the network.

If only either the Bontragers or the Varia are available, or if the Varia was in standby (after having been part of a sucessfully formed light-network), everything works as expected, ...most of the times ;-)

If the Edge starts out of standyby, formation of the lights network seems to be even less robust and predictable unless the Varia kept in standby.

De- and reconnecting the lights, radar and even other sensors did not impact the behaviour.

I have the Smart Bike Light ConnectIQ datafield configured (no individual light-network atm), but that seems to depend on Garmins light-network (and works flawlessly, if Garmins light-network is established) and the problems remain, if the datafield is erased from the Edge.

The Flare RTs charge state as displayed by the Edge very often does not reach full, although the runtime turns out to be sufficient. Only sometimes it shows green and regular depletion. Same behaviour for three lights, even when new, out of the box. OK for the Varia.

Wouldn't it be helpfull, to use this thread somewhat bi-directional, that is have your developers share some insights, theories or approaches here too?

same experience. individual light network -> problem fixed. without it, sensors would be returned back to shop.

Update: most recent build (17 something) has not dropped lights mid ride and connects 95% of the time at startup. Much more reasonable. Thank you. Radar rarely drops also.