Tesla has quietly updated its unsupervised Model Y Robotaxis to remove the turn signal and hazard light sounds — a small but telling change that riders in the Austin fleet will notice immediately. Multiple observers flagged the update on July 27, and the reasoning behind it says more about Tesla's autonomous strategy than the tweak itself might suggest. 1. What Actually Changed Tesla removed both the turn signal click and the hazard light sound from its Robotaxi fleet vehicles. These are the audible ticking sounds that, in a human-driven car, serve as a confirmation cue for the driver that the blinker is active. In an unsupervised autonomous vehicle with no driver to inform, that cue has no functional purpose — it's a holdover from a design built around human operation. The change applies specifically to the unsupervised Robotaxi configuration of the Model Y, not to standard consumer vehicles. 2. Why It Took This Long The Robotaxi service launched with the same base software stack as a consumer Model Y, blinker sounds included. Stripping out features that exist for driver feedback — rather than passenger experience or safety — takes deliberate engineering prioritization. As Sawyer Merritt noted, leaving the turn signal sound on during unsupervised operation "didn't really make much sense," but these kinds of refinements tend to come after the core autonomous functionality is proven stable. The fleet is now mature enough that Tesla is iterating on the in-cabin experience layer. 3. The Vertical Integration Angle Whole Mars Catalog framed this as a direct benefit of Tesla owning the entire product stack — hardware, software, and the fleet itself. Most automakers licensing autonomous technology from third parties would face contractual, regulatory, or technical friction to make a change like this. Tesla can push a software update to its own fleet