Garmin Swim 2 turns off when using GPS

After the last update (I think it was in November 2025), the watch turns off by itself.

I'm testing it every day in Run mode. After 4 or 5 km it turns off.

Important: the battery seems to be fine, because outside of GPS mode it stays charged for more than three days, which was normal since I bought it.

Software Version = 3.10.

  • I have vibration ON, FW 3.10, and NO issues.

    Did you try a soft reset after the update? - hold upper left button pressed until watch switches off. Then power on. This is the general recommendation if anything weird happens after update, this clears all the stuck states and data. Also this is the general recommendation after any update, having weird issues or not.

  • Turning off vibrate has not worked for me.  I only used it for indoor swimming anyway.

    For me it's seems to be all about battery level.  The lower the battery level when you start a workout,  the greater AND sooner the risk of shut-down. Even if you start at 100% battery level the risk is not zero. 

  • Yes, I did a soft reset before start a thread in this forum.
    I don't remember the firmware version, but I can confirm that in November 2025 the watch displayed the "System Update Available" message. After that update, the problem reported here started to appear. Turning off Vibration Mode seems to have solved the problem. However, I believe there is a flaw in this last update, especially since other users have reported the same issue.

  • I thought the same thing at first, especially after finding other reports on this forum related to battery life. However, what caught my attention is that if you don't use the watch during physical activity, starting with 100% charge, the battery lasts as long as it always has. In my case, about 3 or 4 days before needing to be recharged. At the same time, after the shutdown failure (during activities), when I plugged the watch in to recharge, the indicator was almost full, with only one bar flashing to indicate charging progress.