The tile app does this but you have to add a huge plastic thing to a flat area on your remote – better would be a tiny sticker with a chip in it. or better batteries that have a transmitter built in that you can find on your phone GPS.

Find Your Keys, Wallet & Phone with Tile’s App and Bluetooth Tracker Device | Tile

Link: https://www.thetileapp.com/en-gb

Tile Bluetooth trackers help you find your keys, wallet, phone and everything that matters. Join the world's largest lost and found community and never lose anything again.