If you cannot access Radarbot in Android Auto or CarPlay, make sure that all permissions are correctly enabled (Background permissions troubleshooting).
Check Android Auto settings.
Make sure you have the latest version installed.
If it still doesn’t work, uninstall the app and reinstall it on your device.
This action resolves synchronization issues or errors that may prevent the app from appearing correctly in your vehicle.
If it still does not work after this, consult your vehicle’s documentation