Tesla software update 2026.21.6 was listed on August 9, 2026, adding another build to the 2026.21 family. This update covers supervised driving and vehicle convenience. Its 10 documented entries explain changes to the ownership experience, from the features used inside the cabin to the software operating behind them. Availability depends on the vehicle and the requirements of each entry.
FSD (Supervised) v14.1 Lite is listed for Model 3 and Model Y with HW3. FSD (Supervised) v14.3.7 is listed for Model S, Model 3, Model X, Model Y and Cybertruck with HW4. Availability follows the requirements of each entry; the update number alone does not identify which driving branch a vehicle receives.
FSD (Supervised) v14.1 Lite applies HW4-derived learning to HW3, refining driving comfort and adding parking, unparking and reversing. FSD (Supervised) v14.3.7 improves learning and visual understanding for unusual or low-visibility situations. Changes address parking decisions, lane positioning and responses to emergency vehicles, school buses, animals and complex traffic lights. The revised AI runtime is described as delivering 20% faster reactions. These refinements concern how the driving system interprets the road and chooses maneuvers while the driver continues to supervise. Intervention feedback and driving-distance statistics also provide more information about the journey. Actually Smart Summon and Dumb Summon extend to Cybertruck. Full Self-Driving (Supervised) assists route following and maneuvers while the driver supervises.
Start Self-Driving from Park checks driver presence, the seat belt and cabin-camera visibility before touchscreen activation. Arrival Options saves parking or drop-off preferences separately for each destination. Speed Profiles uses driver preferences, road limits and traffic to select driving pace. SLOTH uses lower speeds and more conservative lane choices than CHILL. UI Improvements puts driving preferences directly in the center display visualization. Arrival preferences can be adjusted there as well.
Full Self-Driving (Supervised) assists route following and maneuvers while the driver supervises.
Camera Preview opens individual or grid camera views while driving.
Driving assistance continues to require continuous driver supervision. The documented capabilities can include features carried forward within the same software branch.
Below, you can find the individual 2026.21.6 Release Notes, with images and the vehicle and hardware requirements for each documented feature.
FSD (Supervised) v14.1 Lite
New Feature
for Model 3 and Y
HW3
HW4-derived learning expands HW3 driving assistance with parking, reversing and arrival preferences.
FSD (Supervised) v14.3.7
New Feature
for Model S, 3, X, Y and CT
HW4
Improves perception, parking, unusual-scenario handling and driver monitoring; records intervention-free distance.
Actually Smart Summon
New Feature
for Model CT
Adds Actually Smart Summon and Dumb Summon to Cybertruck.
Full Self-Driving (Supervised)
New Feature
for Model S, 3, X, Y and CT
HW4
Screen-button or scroll-wheel activation; continuous supervision required.
Start Self-Driving from Park
New Feature
for Model 3 and Y
HW3
Requires driver presence, seatbelt and a clear cabin camera; brake confirmation may be required.
Arrival Options
New Feature
for Model 3 and Y
HW3
Save destination-specific parking or drop-off preferences.
Speed Profiles
New Feature
for Model 3 and Y
HW3
SLOTH offers conservative behavior; adjust profiles with the right scroll wheel.
UI Improvements
New Feature
for Model 3 and Y
HW3
Change speed and arrival preferences from the driving visualization.
Full Self-Driving (Supervised)
New Feature
for Model 3 and Y
HW3
Assists navigation and parking under continuous driver supervision.
Camera Preview
New Feature
for Model S (New), 3, X (New), Y and CT
HW3 / HW4
Open individual or grid camera views while driving.
