This may or may not work and related to other apps I use.
Quote: This sounds like your device entered doze mode, a new feature on Android 6.0+. Doze mode is a battery optimization setting that restricts network access in background services and apps to help conserve battery. To avoid this, you must disable battery optimizations for the app 'Scan My Tesla' explicitly yourself. You can get to this setting easily by going to the Settings screen in the app and touching the Battery Optimizations menu option under the Background Services group.
Will give it a shot and report back, thanks