Most owners have already received the Tesla 2025.38 update, but some FSD v14 users are still waiting for a few of the newest features to roll out.
While the 2025.38 update brings several nice upgrades to AMD Ryzen vehicles — including 3D buildings, Tron Mode, and an improved Dashcam Viewer — it also includes seven unlisted changes, such as a beautiful new charging visualization.
Check out all the hidden features included in Tesla’s 2025.38 update below.
1. Santa Mode
Tesla has added Santa Mode to the 2026 Model S and Model X. These models, which run on Unreal Engine, previously did not include the feature.
Santa Mode is noticeably missing from the Toybox, and when owners try to activate it using a voice command, the system responds that Santa Mode isn’t available yet and will be enabled in a future update.
2. New FSD Guide
When owners activate FSD from Controls > Autopilot, Tesla now displays a single-screen guide that introduces users to FSD.
The guide includes the same disclaimers from previous updates, and it now also shows images of the FSD steering-wheel controls to help users understand how to switch FSD profiles and set the maximum speed (for FSD v13 and earlier).
The images shown are specific to each vehicle, so depending on the model, they may display steering-wheel buttons or stalks.
3. More Charging Information
While a vehicle is charging, Tesla now includes a link for ‘Additional Charging Information’ in the Controls > Charging section. If the vehicle is charging, the link will appear in blue in the top-right corner.
Tapping the link displays a pop-up containing additional information, such as the maximum and current battery input power.
Maximum Battery Input Power is the total power the charger can deliver.
Battery input power refers to the energy actively being delivered into the vehicle’s battery. For various reasons—such as a high state of charge—the battery input power may be lower than the charger’s maximum output. In addition, if the vehicle needs to run the HVAC system, screen, or other components, that power is drawn directly from the charger instead of the battery. This helps reduce battery wear and avoids unnecessary cycling from powering accessories with stored energy.
4. “Keep Accessory Power On” — App Control
With the 2025.38 vehicle update, the latest Tesla app now includes a new “Keep Accessory Power On” option. This feature is part of the newest app update, which also adds a dedicated Charging menu that consolidates most charging settings into one place.
The update also introduces a new “Low Power Mode” button, instead of leaving it only under Quick Actions.
5. Parts Purchase
Tesla has added a new “Buy Parts” button inside Service Mode. Tapping it brings up a QR code that, when scanned, takes you to Tesla’s service website where owners can purchase parts directly from Tesla.
Parts can be shipped straight to the customer or delivered to the nearest Service Center.
6. Charger Visualization
Tesla has introduced a new charger visualization that appears when the vehicle is parked and plugged in. In this example, the owner is using a non-Tesla charger, so a generic charger icon is shown. If the vehicle is connected to a Mobile Connector, Wall Connector, or Supercharger, Tesla is expected to display the corresponding charger type.
7. Service Mode Improvements
New Trunk Panel
A new trunk panel provides an overview of the trunk lid status, latch status, and calibration status. It also shows additional details such as the request source, trunk height setting, and hands-free settings.
Supported Models:
Model S (2021+), Model 3, Model X (2021+), Model Y
New Front Trunk Panel
A new front trunk panel now provides an overview of the frunk lid status, latch status, and calibration status. It also displays additional information such as the request source, frunk height settings, and hands-free settings.
Supported Model: Cybertruck
Camera Panel Update — Firmware Mismatch Detection
The Camera panel now includes detection for firmware version mismatches on Driver Assistance System (DAS) Hardware 4 (HW4) cameras.
If a firmware mismatch is detected on any DAS HW4 camera, tap the “Update Cameras” button to begin the camera firmware update.
Supported Models:
Model S (2021+), Model 3, Model X (2021+), Model Y, Cybertruck
Brake Panel Update — ESP Stiffness Test Procedure Change
In the Electronic Stability Program (ESP) service panel, the routine TEST-BRAKE_CORNER_STIFFNESS-TEST has been replaced with TEST_BRAKE_X_STIFFNESS-TEST-SERVICE.
Supported Models:
Model 3 (2017–2023), Model Y (2020–2024)
Next Update
Most vehicles have already received the Tesla 2025.38 update, but about 5–10% of vehicles equipped with FSD v14 are still on version 2025.32. These vehicles are currently running 2025.32.8.16 and are waiting for the next wave of updates, which will bring them to FSD v14.1.7 and the 2025.38 branch.
