The Tesla app is the primary way that owners interface with their cars. The app is used to unlock the car, turn it on, and use various features such as sentinel mode and interacting with Tesla superchargers. When the app is not working, many of those features are inaccessible.
Should be coming back online now. Looks like we may have accidentally increased verbosity of network traffic.— Elon Musk (@elonmusk) November 20, 2021
Apologies, we will take measures to ensure this doesn’t happen again.