Cruise Control problems of the 2019 Tesla Model 3

The contact owns a 2019 Tesla model-3. The contact stated that while utilizing the adas features including the adaptive cruise control, the vehicle unexpectedly applied the brakes. The contact then stated that on a separate occasion while the accelerator pedal was depressed, the phantom braking inadvertently applied. As a result, the vehicle abruptly stopped and caused the contacts wife’s seatbelt to retract back tightly. The contact stated that he had to disengage the features including the adaptive cruise control to operate the vehicle. The vehicle was taken to the dealer where it remained. No warning lights were illuminated. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 50,000.

When I'm driving on an interstate highway with hot lane to the left of my direction of travel, the car erroneously senses the speed limit as 65 mph (the speed limit for the adjacent hot lane) rather than the actual speed limit of 55 mph in my lane. The result is that when I am using the adaptive cruise control in the situation described, the car suddenly and without warning accelerates by at least 10 mph over the posted speed limit. This has happened repeatedly and makes use of the adaptive cruise unsafe.

My Tesla Model 3 keeps unintentionally and erratically braking while in motion using the autopilot or cruise control on the highway. I have multiple dates and times of this incident happening. This is known as "phantom braking" a false positive that the autopilot system engages in. This happens at random areas and time (day or evening) on the freeway. I have contacted Tesla service and they have given me the cold shoulder and stated there is no fix for this.

While driving at ~70mph on the freeway, we attempted to open the web browser app. The entire ui froze, during this time I could not exit autopilot by pressing the brake pedal. The car would decelerate when pressing the brake, however after pressing the brake the car immediately accelerated back to the set cruise control speed. After around 30 total seconds (around 10 seconds after attempting to exit autopilot) the ui unfroze and I was able to exit autopilot.

When in cruise control mode and a vehicle crosses my traffic lane far enough away to pose no hazard to me, my car slows very suddenly. This slowing for no apparent reason puts me in danger of being rear-ended by following traffic. A similar slow down happens if the car in front of me makes a right turn onto a side street and my cars slows dramatically even if there is no reason to brake; again creating a danger of rear end collision.