Watt Key — Watch App for Tesla

59 reviews
Content rating
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About this app

Turn your Wear OS watch into a key fob for your Tesla. This app connects to your Tesla(s) via Bluetooth and allows you to:

* Automatically unlock/lock as you walk towards/away from your Tesla
* Automatically unlatch the driver's door as you approach
* Unlatch any door (or all of them!)
* Manually lock/unlock
* Open the frunk
* Open and close the trunk
* Open, close and unlock the charge port
* Tile for quick access to commands
* Summon forward and reverse (Enable in settings - your Tesla must have EAP or FSD)

Only works on Tesla's with Bluetooth key functionality: Model 3/Y and the new refresh Model S/X.

To install you can open Google Play Store app on your Wear OS watch and search: "Watt Key" or open Google Play Store in your web browser and search "Watt Key". For some reason the Google Play Store phone app will show the app as incompatible with your devices. You MUST have Bluetooth and Location enabled or Watt Key won't be able to find your Tesla. The Watt Key notification must be allowed or the app won't be able to run in the foreground.

No internet connection is required, just your Wear OS watch with Bluetooth turned on. As the app connects directly to the car, actions are immediate and there's no noticeable delay between pressing the buttons and the car performing the action.

If you have any issues while using the app please email me so I can help: joshendy89@gmail.com

Works best on Samsung Galaxy Watch 4 and higher, and the Google Pixel watch.

This app requires your watch to have Wear OS version 2 or higher. Unfortunately older versions of Galaxy Watch have Tizen OS and not Wear OS so you'll be unable to use this app on those watches.

Language support:

Security and privacy:
This app generates a secure cryptographic key that it uses to authenticate with your vehicle. This key is stored encrypted on your watch and can only be accessed by the app. At any time you can delete the key or all keys from this app via the Settings menu and also delete them from within the Lock menu on your Tesla. Watt Key supports Tesla's new end-to-end encrypted commands.

This app is not endorsed by Tesla. Use at your own risk. No guarantees are given as to functionality or uptime as this is very dependent on Tesla. You are responsible for any changes you make to your vehicle using this app.
Updated on
Feb 15, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity and App info and performance
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

27 reviews
Man Liu
April 20, 2024
I've been using this App for over a year now and it has always worked well and as advertised. I just miss the Watt Time App (that I also purchased but is currently not working) since it's cloud based (as opposed to Bluetooth) and can control the Tesla without having to be near the vehicle with more features.
1 person found this review helpful
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Thomas Caven
March 15, 2024
Great app except for the battery drain,I added it to my Galaxy Watch 6 Classic & added a tile, Over the first night my watch lost 50% battery, I turned RUN AS SERVICE off which helped a bit but it still lost 25% battery overnight this is still more than the 6% it normally uses, I have now had to close the app down & open it only if I ever need it which isn't that great to be fair as I assumed it would work as a key the same as my phone, I emailed & asked for help but as yet have had no reply.
2 people found this review helpful
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Neil George
April 12, 2024
Unfortunately this app has lost most of its features from before. Cannot: 1) turn sentry on or off 2) Vent Windows 3) turn climate on or off Now you have to map your car by entering VIN to connect to the car. Miss the old app
1 person found this review helpful
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What's new

* Only allow VIN entry when Watt Key scanning is active on your watch
* Show how many nearby Teslas there are when scanning for your Tesla