Clicking or Humming Sounds
Tessie works by asking Tesla for data about your car. When Tesla checks on the car, it may prompt maintenance tasks, like calibrating the battery management system, uploading data to Tesla or charging the 12V battery.
You may hear clicking or humming sounds as the car performs these tasks.
If these sounds and behaviors become repetitive and excessive, it's indicative that the 12V battery may need to be replaced.