🚗 Full Smart Home Control of Your Tesla with Home Assistant’s Tesla Fleet Integration

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Forget just checking stats — this integration lets you command your Tesla.

Start the climate, unlock the doors, change the charging rate — all without ever opening the Tesla app.

With the new official Tesla Fleet integration in Home Assistant, you can now control core vehicle functions directly from your dashboard, phone, or smartwatch. It goes far beyond basic monitoring — and yes, it’s secure and works with Tesla’s new Fleet API.

In this guide, I’ll walk you through every step to get this up and running — from generating encryption keys to creating widgets that can control your Tesla from your wrist.

📺 About This Video

Today, we’re diving into the brand new Tesla Fleet Integration for Home Assistant.

Tesla recently changed their API, which broke most community-built integrations. This new official integration uses the Tesla Fleet API and includes full authentication, encrypted communication, and support for a wide range of Tesla functions.

And the best part? All your existing automations can still work with just a few updates.

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⚙️ Prerequisites

Before diving into setup, make sure you meet the following requirements:

✅ Tesla Account with at least one vehicle or energy product
🏠 Home Assistant OS, version 2024.8 or newer
🌐 Secure HTTPS access using DuckDNS and NGINX SSL Proxy Add-on
🔐 Advanced SSH & Web Terminal Add-on enabled in Home Assistant
💳 Tesla provides $10/month free API credit, but you must add a credit card for overages

API calls (like unlocking or polling) consume credit, so be careful with automation frequency — we’ll talk about usage strategies later.

🔐 Step 1: Prepare Home Assistant

Generate Encryption Keys

Use Home Assistant’s terminal or SSH to generate your private and public keys:

openssl ecparam -name prime256v1 -genkey -noout -out tesla_fleet.key
openssl ec -in tesla_fleet.key -pubout -out public-key.pem

Move the keys into the proper locations:

cp tesla_fleet.key /config/tesla_fleet.key
mkdir -p /share/tesla/.well-known/appspecific/
cp public-key.pem /share/tesla/.well-known/appspecific/com.tesla.3p.public-key.pem

Configure NGINX

Create a custom config file:

echo 'location /.well-known/appspecific/com.tesla.3p.public-key.pem {
  root /share/tesla;
}' > /share/nginx_proxy_default_tesla.conf

Update the NGINX SSL Proxy Add-on:

Go to Settings → Add-ons → NGINX Home Assistant SSL proxy → Configuration
Set customize.active to true
Leave config.default as nginx_proxy_default*.conf
Restart NGINX

Verify that your public key is accessible at:

https://yourdomain.com/.well-known/appspecific/com.tesla.3p.public-key.pem

👨‍💻 Step 2: Tesla Developer Account Setup

Go to developer.tesla.com and create an account.
Verify your email and enable MFA (optional).
Visit developer.tesla.com/request to create a new app.

Application Fields:

Application Name: e.g. “Home Assistant Integration”
Purpose of Usage: “Home automation integration”
OAuth Grant Type: Authorization Code and Machine-to-Machine
Allowed Origin URL: https://yourdomain.com
Redirect URI: https://my.home-assistant.io/redirect/oauth

Scopes to Select:

Vehicle Information
Vehicle Location
Vehicle Commands
Energy Product Information
Energy Product Settings

Tesla gives you $10/month free credit for API usage. Most personal setups stay under this limit.

📡 Step 3: Register Your Domain with Tesla

Use a tool like curl (or Postman) to register your domain. First, request a token.

Token Request (M2M Client ID & Secret)

curl --request POST \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data-urlencode 'grant_type=client_credentials' \
  --data-urlencode 'client_id=**YOUR_CLIENT_ID**' \
  --data-urlencode 'client_secret=**YOUR_CLIENT_SECRET**' \
  --data-urlencode 'scope=**openid vehicle_device_data vehicle_cmds vehicle_location vehicle_charging_cmds**' \
  --data-urlencode 'audience=**YOUR_REGION_URL**' \
  'https://fleet-auth.prd.vn.cloud.tesla.com/oauth2/v3/token'

Replace the placeholders with your actual credentials and region:

NA/APAC: https://fleet-api.prd.na.vn.cloud.tesla.com
EMEA: https://fleet-api.prd.eu.vn.cloud.tesla.com

Copy the access_token from the output.

Register as Partner

curl --location 'YOUR_REGION_URL/api/1/partner_accounts' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
--data '{
  "domain": "yourdomain.com"
}'

If the response is valid, your domain is now trusted.

🧩 Step 4: Set Up the Integration in Home Assistant

Go to Settings → Devices & Services → + Add Integration
Search for Tesla Fleet
Enter your Client ID and Client Secret
Authenticate via Tesla’s login page and approve requested scopes

Once successful, you’ll see entities like:

Lock/Unlock
Climate controls
Battery and charging status
Location and more

If something fails, double-check:

Public key is accessible
Domain matches Tesla registration
Scopes and redirect URI are correct

📱 Bonus: Build Smart Widgets & Watch Controls

🟦 iOS (iPhone / iPad)

Open Home Assistant iOS App → App Configuration → Actions
Add actions like:
- lock.lock
- climate.turn_on
- button.press
Add a Home Assistant Widget from your home screen and assign the action

🟢 Android

Long-press home screen → Add Widget
Choose Home Assistant Action
Assign your Tesla command
Optionally customize the label/icon

⌚ Smartwatch (Wear OS & Apple Watch)

Wear OS: Add tiles or shortcuts from Home Assistant
Apple Watch: Actions created in iOS will appear automatically — assign them as complications for easy access

Pro Tip: Use stateless actions (like “Start AC”) for more reliable commands. You can also build automations using input_boolean toggles if you need more control or confirmation flows.

🏁 Conclusion

With this new Tesla Fleet integration, your smart home and smart car can finally work as one. Automate climate preconditioning before your commute, sync charging with solar output, or simply lock your car from your watch — no app required.

If this guide helped you, check out the full video walkthrough on the This Smart House YouTube channel and don’t forget to subscribe for more smart home tutorials!

👉 Video Sponsor: Magic Mind — Use code SMARTJUNE for a discount.