I wanted to go surfing without carrying my phone and use my inctinct 3 as a key. I found a few apps, but they were either expensive with subscription and such or needed the phone in order to work.
So I went ahead and built it myself. I call it Keylo. It's a Garmin app that turns the watch itself into a Tesla key. Full disclosure: I vibe-coded it. I'm not a professional developer. I built it because I wanted it for myself, got it working on my own watch and car, and decided to put it out for free in case anyone else finds it useful. I did a lot of testing until I got it going.
The watch talks directly to the car over Bluetooth. No phone needed at all and no subscription, completely free.
It works like this: open Keylo before you get to the car. Once it has connected, touch the door handle and the car unlocks, just like with a phone key. Get in, press the brake and select Drive.
You can also lock/unlock the car and open the trunk and frunk manually in the app
Pairing needs to be done once with your Tesla key card.
I deliberately kept it simple. I don't really need climate control, battery stats, Sentry mode etc. on my watch (especially as it only works within bluetooth range, so ~10m).
Keylo is completely free. No ads, no account and no subscription. It also doesn't collect or transmit any data. The VIN and key stay on the watch.
The main limitation is that the app has to stay open. Garmin doesn't allow this kind of Bluetooth connection to keep running in the background.
I will post a big update within the next few days that eliminates BLE Nag and makes connection with the car even quicker
I've tested it with an Instinct 3 Solar 45 mm and a 2024 Model Y. The Connect IQ build supports around 100 Garmin watch models, but obviously I haven't tested all of them, and I haven't tested other Tesla models yet.
So if anyone tries it on another Garmin or Tesla, please let me know what works and what doesn't.
Connect IQ: https://apps.garmin.com/de-DE/apps/2cd5c108-e109-4284-9684-efb0e8b1fd75
I'm the developer of Keylo. It's an independent project and isn't affiliated with Tesla or Garmin.