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Step count, heart rate & calorie counter all stopped at midnight on 22.08.25 and no light on wrist sensor

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My Forerunner 255 was working fine and then at exactly 23:59 on Friday 22.08 the heart rate, steps and calorie counter just stopped working according to my Garmin connect screen.

I cannot seem to get them working again - i have tried recording activities etc.

I don't know if there was some kind of update to the software on that date. I have checked on my watch and it says it is Bundle 24.12 software version. 

I done a soft restart, checked for updates etc but no progress.

Can anyone suggest other steps pls?

Cheers

  • 0

    Not a suggestion, but i'm having the same issue with my Fenix 6x. I've tried turning on & off, soft reset & a full factory reset etc & it's still the same. I noticed on the day it stopped working, the connect app updated, so i'm not sure if that has anything to do with it. 

    I've seen a few places where something similar has happened in the past, it fixed itself after a couple of days. Has yours start working again? 

  • 0

    edit

    It lasted 20 minutes.

    After some messing around, i've managed to get mine going again. I'm not sure if it's a temporary fix, but we'll see.

    I downloaded Garmin Express for PC & connected my watch with the USB cable (not in MTP mode). After connecting & syncing it said i had an update. After disconnecting & trying to install the update a few times with no luck, I put my watch in the fridge for about 30mins, then connected it to the PC, synced it, disconnected it & put it back in the fridge while it updated & it's now working again. 

    Even if yours doesn't say it has an update, i'd still try syncing & disconnecting a few times to see if it gives you an option to install one. Mine didn't always say i had an update, but most of the time still asked if i wanted to install one after disconnecting from the PC.

    I will still contact support as my watch is still in warranty & this doesn't seem like a normal thing to have to do!

  • 0

    I'm having the same problem!
    After Garmin's software update the heart rate went crazy, shows unrialistic metrics and then the whole heart sensor stop working completly. The watch is now totlly uslells without it.
    You should flag this to Garmin's support, as we're not the only ones that experience this.

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