What's new in 15.8

Here are the major highlights

February 3, 2026

Tessie now projects your battery level and range throughout your charging session, so you'll know how charged you'll be at any given time.

How to access it: Select Charging on the home screen to open a live view, then view your projected stats under Energy and Range.

Maximize your range and preserve battery life, whether you're away for a time or looking to optimize your daily energy usage.

How it works: To extend your battery life, the following features are temporarily disabled when Low Power Mode is active:

How to use it:

Manually: Select the new Battery > Low Power control.
Using Automations: Select the new Enable/Disable Low Power Mode actions under Automations.
Using iOS Shortcuts: Select the new Enable/Disable Low Power Mode actions in the Shortcuts app.
Using Alexa: Say "Enable/Disable Low Power Mode".
Using an API: Use the new Enable Low Power Mode and Disable Low Power Mode endpoints.

Compatible with Model 3, Model Y, Cybertruck and 2021+ Model S/X

Requires firmware 2025.32+

Typically, accessory power is only available when the vehicle is in use or detects that a user is present.

Using Keep Accessory Power Mode, you can continue powering or charging your devices through USB ports and low-voltage outlets without a user present.

How to use it:

Manually: Select the new Battery > Accessory Power control.
Using Automations: Select the new Enable/Disable Keep Accessory Power Mode actions under Automations.
Using iOS Shortcuts: Select the new Enable/Disable Keep Accessory Power Mode actions in the Shortcuts app.‍
Using Alexa: Say "Enable/Disable Keep Accessory Power".
Using an API: Use the new Enable Keep Accessory Power Mode and Disable Keep Accessory Power Mode endpoints.

Compatible with Model 3, Model Y, Cybertruck and 2021+ Model S/X

Requires firmware 2025.38+

Unleash your Tesla. Try it for free and experience Tessie for yourself.