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caroline-harper
Trending Lyricist II
December 29, 2025
Answered

Sonos volume changes on its own during playback

I am noticing that the volume on my Sonos speaker sometimes changes on its own while music or TV audio is playing. There is no one else controlling it from the app, and I am not using voice assistants at the time.

This happens randomly and can go either louder or quieter. I am using the Sonos app on my phone and the speaker is connected to my home Wi-Fi network.

Has anyone experienced this before? Could this be related to TV remote signals, HDMI-ARC, or another app connected to Sonos?

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Airgetlam
AirgetlamAnswer
December 29, 2025

Hard for us to tell, without the data stored in the Sonos diagnostic. It could be any of these, although the first two are the same. 

I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here, their lawyers get sensitive about GDPR.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Bruce

26 replies

Trending Lyricist I
February 26, 2026

You’re not understanding. I may not notice the volume changed until a hour or more later, and maybe 20 songs later.

Will a diagnostic report still be usable after that long?

Senior Virtuoso
February 26, 2026

Since the buffer only holds about 10 minutes’ data on a continuously rolling sequence, data that was recorded an hour earlier will have been overwritten. 

Trending Lyricist I
February 26, 2026

See, this is my exact point I have been trying to make in my past three posts.

MoPac
Headliner III
February 26, 2026

 If the issue keeps occurring set “Volume Limit” for all rooms until the issue is resolved.   maybe you already did this.

Trending Lyricist I
February 26, 2026

Not sure how volume limit would keep the speakers from voluming down on its own.  (The volume never increased on its own, only adjusted down on some speakers.)

But I turned it on for each speaker and set it at 95% anyway to see if it makes any difference.

MoPac
Headliner III
February 26, 2026

 Got it.  I misread your post.