Option to Precondition Only When Plugged to a Charger

Summary
Only start preconditioning if the vehicle is connected to external power
How It Would Work
Feature Request: Preconditioning Only When Connected to External Power
I would like to suggest adding an option in the Tesla app and vehicle settings that allows users to enable preconditioning only when the vehicle is connected to an external power source (charging).
Currently, preconditioning can consume a significant amount of battery energy when the vehicle is not plugged in.
Proposed functionality:
Add a simple toggle option:
“Precondition Only When Plugged In”
When enabled:
* Preconditioning will operate only when the vehicle is connected to an external power source.
* If the vehicle is unplugged, scheduled or manually triggered preconditioning will not activate.
* When connected to a charger, the vehicle can precondition normally using external power.
Why this matters:
This feature would help Tesla owners reduce unnecessary battery consumption, preserve driving range, and improve energy efficiency, especially for users who regularly park their vehicles unplugged.
It would also give users more control over how and when their vehicle uses battery energy.
I believe this is a simple but valuable software improvement that would benefit many Tesla owners.
Thank you for considering this suggestion!
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