Tesla Rolls Out 2026.26.6.5 Update in North America, Integrating FSD v14.3.8 and Summer 2026 Features

Tesla began rolling out software version 2026.26.6.5 to its entire vehicle lineup in North America on August 27, 2024. This update integrates FSD (Supervised) v14.3.8 with the 2026 Summer Update features. The update applies to Model 3, Model Y, Model S, Model X, and Cybertruck vehicles equipped with Hardware 4 (HW4) and the FSD package. Vehicles with Hardware 3 (HW3) are not included in this rollout; they remain on the FSD v14 Lite branch—such as version 2026.20.6.11—which is currently being deployed in markets like the U.S. and Canada. Key updates in version 2026.26.6.5 include: - Upgrade of FSD (Supervised) to v14.3.8 - Expanded Grok voice command functionality, now supporting phone calls, music playback, climate control, and answering vehicle-related questions - Introduction of Auto Navigate and Preferred Routes features - Addition of a scoring feature to Karaoke - Tesla mobile app enhancements: new Autopilot statistics and the ability to set a target state of charge upon arrival at a destination - New parental lock feature for rear displays (available on Model S, Model X, and Model Y vehicles equipped with rear screens) - Integration of Google Meet, Microsoft Teams, and Discord for video conferencing - Encryption support for Sentry Mode video clips - New parking blind-spot warning feature The release notes for FSD v14.3.8 are nearly identical to those for v14.3.7, indicating that this version primarily delivers incremental optimizations within the existing architecture. The prior v14.3.7 update introduced a rewritten AI compiler, which improved system responsiveness by approximately 20% and enhanced braking smoothness, 3D geometry recognition, and traffic sign detection.