Tesla Firmware 2025.26.4 (Bug Fix Update)

Minor Fixes

Included in 2025.26.300.1

This release contains minor fixes and improvements

FSD (Supervised) v13.2.9 Down Under

Included in 2025.26.7.10

FSD (Supervised) v13 Down Under upgrades every part of the end-to-end driving network.

Includes:

- 36 Hz, full-resolution AI4 video inputs

- Native AI4 inputs and neural network architectures

- 4.2x data scaling

- 5x training compute scaling (enabled by the Cortex cluster)

- Reduced photon-to-control latency by 2x

- Integrated unpark, reverse, and park capabilities

- Improved reward predictions for collision avoidance

- Improved camera cleaning

- Redesigned controller for smoother, more accurate tracking

- Dynamic routing around road closures, which displays them along an affected route when they are detected by the fleet

Upcoming Improvements:

- 3x model size scaling

- 3x model context length scaling

- Audio inputs for better handling of emergency vehicles

- Improved reward predictions for navigation

- Improvements to false braking and slower driving in parking lots

- Support for destination options including pulling over, parking in a spot, driveway, or garage

- Efficient representation of maps and navigation inputs

- Improved handling of camera occlusions

Full Self-Driving (Supervised) Down Under

Included in 2025.26.7.10

Under your supervision, Full Self-Driving (Supervised) Down Under can drive your Tesla almost anywhere. It will make lane changes, select forks to follow your navigation route, navigate around other vehicles and objects, and make left and right turns. You and anyone you authorize must use additional caution and remain attentive. It does not make your vehicle autonomous. Do not become complacent.

Full Self-Driving (Supervised) Down Under is enabled on your vehicle. To use the feature, press the right scroll wheel button once. You can disable Full Self-Driving (Supervised) Down Under in Autopilot Settings.

Note: This is an early access build. You and anyone you authorize must use additional caution and remain attentive.

Vision-Based Attention Monitoring

Included in 2025.26.7.10

When Full Self-Driving (Supervised) is enabled, the driver monitoring system primarily relies on the cabin camera to determine driver attentiveness. Cabin camera must have clear visibility (e.g., camera is not occluded, eyes, arms, are visible, there is sufficient cabin illumination, and the driver is looking forward at the road without sunglasses, or other objects covering their eyes). In other circumstances, the driver monitoring system will primarily rely on torque-based (steering wheel) monitoring to detect driver attentiveness.

If the cabin camera detects inattentiveness, a warning will appear. The warning can be dismissed by the driver immediately reverting their attention back to the road ahead. Warnings will escalate depending on the nature and frequency of detected inattentiveness, with continuous inattention leading to a Strikeout.

Light Sync

Included in 2025.26

Experience light and sound in perfect harmony. Accent lights now respond to your music, adjusting in real time to both sound and surroundings to deliver a consistent visual impact across genres and lighting conditions.

For an even more immersive experience, you can also match the lights to the album's art color. While parked, turn on Rave Cave to transform the cabin into your own personal nightclub - with maximum brightness and full-on party vibes.

Go to App Launcher > Toybox > Light Sync.

Dashcam Update

Included in 2025.26

The Dashcam app now lets you adjust playback speed for more flexible viewing. You can also choose whether the video fills the screen or keeps its original size.

While parked, go to App Launcher > Dashcam.

Site Info at Arrival

Included in 2025.26

To improve the site arrival experience, new icons in the charger list now indicate locations that require valet service or pay-to-park access. Upon arrival, a notification provides key details such as access codes, parking restrictions, level or floor information, and restroom availability. This information is also available on the site card.

Audio Settings Update

Included in 2025.26

Customize your sound with personal equalizer presets. You can create and save multiple presets to match your listening preferences. Audio settings are now located under Controls > Audio and can also be found using the Controls search.

Security Improvements

Included in 2025.20.6

This update includes important security fixes and improvements.

Supercharging Live Activity

Included in 2025.20

View your Supercharging session with Live Activity on your iPhone or paired Apple Watch. Live Activity will start automatically as soon as your charging session begins. Requires Tesla app version 4.45.0+ and iOS 17.2+.

Unlatching Charge Cable

Included in 2025.20

Charging can now be stopped and the charge cable released by pulling and holding the rear left door handle for 3 seconds, provided the vehicle is unlocked or a recognized key is nearby. This is especially useful when the charge cable doesnt have an unlatch button. You can still release the cable using the vehicle touchscreen or the Tesla app.

Forward Collision Warning Improvements

Included in 2025.20.3

Forward Collision Warning is now accompanied by haptic feedback in addition to audible and visual warnings. Warnings cancel automatically when the risk of a collision has been reduced.

Forward Collision Warning is enabled by default.