Deregister Your In-Car Entertainment with Fire TV built-in

If you no longer wish to use the In-Car Entertainment with Fire TV built-in, or want to use it with a different account, you can deregister it from your Amazon account by going into the Account & Profile Settings section of the device settings and selecting Deregister.

1. From the Amazon website, go to Manage Your Content and Devices page.
2. Login with your Amazon account credentials.
3. Click Devices.
4. Select your In-Car Entertainment with Fire TV built-in.
5. Select Deregister.
   Once you deregister, you're prompted to register again to connect the device to a different Amazon account.