Garmin Varia RTL515 doesn't flash when vehicle approaches

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Jonas Rupprecht

• August 01, 2025 12:54

It works with the Garmin app and with the wahoo bolt but does not work with the Karoo3 for me. This is 100% a Hammerhead problem.

Another great feature was already requested in the past:

https://support.hammerhead.io/hc/en-us/community/posts/28106035237275-Feature-Request-light-from-the-radar?input_string=Garmin%20Varia%20RTL515%20doesn%27t%20flash%20when%20vehicle%20approaches

Would be very nice, if you could work on this.

Thanks.

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  Robert Greisel

  • March 07, 2026 09:39

  Ist die Anbindung KAROO 3 zu GARMIN RTL515 in Arbeit?
  Problem: RTL515 darf nur blinken wenn Fahrzeug von hinten im Radar aktiv ist!

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  Robert Greisel

  • March 07, 2026 09:41

  Is the KAROO 3 to GARMIN RTL515 connection in development?

  Problem: The RTL515 should only flash when a vehicle is detected by the radar from behind!

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