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Garmin Edge 1040 And Garmin Varia RTL515 Disconnect / Turning Off

I have a Garmin Edge 1040 running S/W Version 17.29 with a Garmin Varia RTL515 running S/W Version 3.33

While I am riding the Garmin Varia RTL515 is turning off and/or shifting light modes without me touching or manipulating any settings.  Has anyone experienced this?

Incredibly disappointing and a safety issue as not only does the light cease to illuminate or flash, but I have to constantly pull over to check and/or restart the light.

What I do notice is that the radar function continues to execute/function.


Cheers and thank you.

  • Same here. Garmin support told me to use 1040 beta 18.25 with Varia 515 on 3.33 . 
    tbh it gotten worse on my ride last weekend. 

    funny the other 515 works happily with 840 , 1040 solar and even 530z