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BUG - 965 will not record temperature if Tempe sensors are present in the sensor library (but not connected)

So I had started this previous thread (link below) before I realized the depth/breath of this issue.

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-965/333722/bike-indoor-activity-not-recording-temperature

I have realized that my 965 has not been recording temperature on the runs and rides I have done where the Tempe sensor I have stored in my sensor library is not present.  On the rides I have done where the Tempe was present at the start (i.e. it was in my garage), it records the initial temperature and then holds that for the rest of the ride.

Note that temperature recording works fine when the Tempe is present.

However, on my cycling rides I typically don't bring the Tempe along, the watch mounted on the handlebars will record the temperature just as well as an external Tempe would (as it's not impacted by my skin temperature).

Compounding this issue, in the Activity settings (either Run or bike) when you scroll down to the "record temperature" option, it is greyed out and toggled permanently ON (i.e. you can't toggle it off) and the Tempe sensor last used shows the device name underneath.

This is different behavior than my previous 945 displayed where it would (sensibly) record temperature from the Tempe when present, but from the watch's internal sensor when not.

  • This continues to be an issue, I'm not sure how to resolve it.  The "record temperature" option in Settings is not "clickable" at all, so other than deleting the Tempe sensor altogether, I can't come up with anything else?

  • Can someone please look into this?  I can't disable the setting because there is a Tempe in my sensor list, even if it is not currently connected.

  • ,

    In order to further investigate, may I have permission to reach you via email so I can gather a few more pieces of information?

  • H Sierra - yes you have permission, thanks

  • I have a similar issue as well, I can't turn off temperature recording in any activity and have a Tempe sensor paired, but my watch do record internal temperature if it can't connect to the Tempe. I'm on beta 17.22 for now. Feel free to contact me if you need any more info.

    Edit: But as OP wrote, if it connects to Tempe before leaving home, it will not record the internal temperature later if Tempe is left behind.

    Edit2: Picture, and it looks the same on the watch, enabled but not able to toggle:

  • Edit2: Picture, and it looks the same on the watch, enabled but not able to toggle:

    Yes, this exactly.


    I sent a video and response to - hopefully we get this resolved.

  • After further investigation, it looks like this is by design. If a Tempe sensor is listed on the Sensors & Accessories menu (connected or not), the watch will default to attempt to use the sensor and shut off the watch's barometric altimeter sensor. This is why you have no option to toggle "Record Temperature" off. FYI, I tested this out on my FR 945 and experienced the same result- I could not toggle "Record Temperature" off, and I had no Temperature data with my Tempe sensor disconnected. 

    I apologize for this limitation and any frustration, but it looks like you must remove the sensor from your watch if you plan to use the watch's barometric altimeter sensor. 

  • I’ve got a workaround in my head (not tetsted yet), to store the Tempe in a tin jar when not in use to prevent connection to it :-)

  • Let me know how that goes, I had some similar ideas.  I hate the idea of having to remove it from sensors everytime I don't want to use it.

  • shut off the watch's barometric altimeter sensor

    I can't understand the purpose of this.  I expected my watch's barometric altimeter to always be in use, not seeing what a Tempe has to do with that.