How do I fix a car connected-services app that says a vehicle is already registered?

Follow these steps

1. 1

   Sign in and open vehicle management

   Open the app and sign in, then go to the vehicle or vehicle management section of the account.

   You should see: You can see a list of vehicles currently linked to the account.

2. 2

   Remove the older vehicle

   Select the previous vehicle that no longer belongs to the account and choose the option to remove or unlink it.

   You should see: The older vehicle no longer appears in the vehicle list.

3. 3

   Sign out and force close the app

   Sign out of the app, then fully close it from the phone's recent apps or app switcher rather than leaving it running in the background.

   You should see: The app is completely closed and not just minimized.

4. 4

   Restart the phone

   Restart the phone before reopening the app, which clears any cached session data left over from the previous vehicle.

   You should see: The phone restarts normally and the app is not running when it finishes.

5. 5

   Clear the app's cache

   In the phone's app settings, find the vehicle app, open its storage settings, and clear the cache (not the app data, which would sign you out completely).

   You should see: The app's cache size resets to a smaller value and the app can be reopened normally.

6. 6

   Try registering the new vehicle again

   Reopen the app, sign in, and attempt to add the new vehicle following the on-screen setup steps.

   You should see: The vehicle registers successfully without the previous error, or a new, more specific message appears that points to the next step.