How to Find a Lost Game Controller

What you’re dealing with

They also advertise a clear model name, so a scan in a living room tells you exactly which controller is where.

Broadcasts as	DualSense, Xbox Wireless Controller, Pro Controller, Joy-Con
Typical battery	10 to 40 hours in use, weeks asleep
Findable by scan	Yes, while powered on
Search window	Days to weeks

Once the battery is gone: Controllers sleep rather than power down, and a sleeping controller keeps advertising for a long time.

Through the gap at the back of the seat into the frame, which is where remotes go too.

Kicked back over several evenings.

Carried off by whoever used it last, especially in a house with children.

Check the last-seen map firstBefore you search a room, find out which building. A pin saves you from searching the right way in the wrong place.
Scan from the middle of the roomNote everything that appears, then select the device you want so the rest of the list drops away.
Walk and watch the signalSweep in a straight line, give each position a few seconds, and turn 90 degrees when the reading stops rising.
Search inside things, not across themA strong signal with nothing visible means it is underneath or inside something. Fabric and metal block Bluetooth badly.

Stand at the sofa and scan. A very strong reading with nothing visible means it is inside the furniture, not under it.
Take the cushions fully out rather than lifting them, controllers sit in the base frame below the cushion line.
Press a button if you get close; waking the controller makes it advertise far more often and the signal jumps.

The same method applies to these, with different battery windows and different hiding places.

Yes. Sleep is not off, and a sleeping controller continues to advertise, which is why one lost weeks ago is still worth scanning for.