Assist problems of the 2024 Tesla Model 3

On October 17, 2025, while full self-driving (supervised) was engaged, the vehicle made an abrupt, uncommanded steering input to the right, causing a collision with a tunnel wall. This crash appears to be the result of a critical vehicle hardware failure. In the 24 hours prior to the crash, the vehicle logged multiple critical steering errors, including epas3p_a086_dasmia, which indicates the electric power assisted steering system was "missing in action" and not communicating. Furthermore, the vehicle has logged daily, recurring hardware faults for the steering column control module (sccm_a016_hardwareerror) since it was purchased. The uncommanded steering action created an extremely dangerous safety condition resulting in a collision. All stability and traction control faults appeared at the exact moment of impact, not before, indicating the steering system failure was the root cause. The problem has been confirmed by the vehicle's own internal diagnostic logs. The vehicle is available for inspection.

Subject: fsd lane-selection issues at three specific santa clara locations vehicle: [2024 Model 3], software [2025. 32. 8], fsd [v13. 2. 9] 1) 2025-10-12 [approx time 6:30pm pt] – westbound [xxx] crossing [xxx] . Expected: proceed straight in through lane. Observed: fsd moves into left-turn lane to cross [xxx] . 2) 2025-10-12 [approx time 1pm pt] – southbound toward [xxx] . Expected: choose left-turn lane. Observed: fsd sometimes stays in straight-through lane when attempting a left turn. 3) 2025-10-12 [approx time 4pm pt] – [xxx] exit to [xxx] approaching [xxx]. Expected: merge left lane before making a left turn. Observed: fsd sometimes stops at green in the through lane after failing to merge left. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Have to swerve the vehicle back and forth to get the alarm to shut off.

Driver set cruise control has fsd imbedded that causes the vehicle to slow down drastically on its own. The car has brake tested several following vehicles so far. I’ve seen this before many times of other Teslas but thought it was the driver and now I know it was not. This causes a chain reaction of braking and smoking tires. I am positive this has created accidents but the ones involved have no idea how it started many vehicles ahead. The lane keep assist pillar cameras do not work in the dark, this has taken me by surprise already. The phantom braking on highways is awful, it is so bad that I am afraid to drive in the winter. The torque of the wheel sensor is not safe, when auto steer disables it can take you by surprise causing you to swerve into on coming traffic. The car accused me of using a cheat device one time so I decided to try it and surprisingly I found that it is actually much safer than using my body weight. These are extremely unsafe for busy traffic and slippery roads. I have videos showing it and will get more.

The right scroll wheel used to turn on/off adaptive cruise and lane centering doesn't register inputs every time the button is pressed in. This makes turning the system on and off unpredictable and dangerous.

While driving in the right lane of an interstate using full self driving (supervised) mode (version 12. 3. 6), I was behind a motorcycle that was traveling slower than I. Fsd was gaining on the motorcycle, but failed to move to the passing lane. I had to disengage the system so that the car didn't get too close to, or strike, the motorcycle. I manually moved to the passing lane and reengaged fsd. The car eventually decided to move to the right lane, behind the motorcycle. Again, it was gaining on the motorcycle and got too close, so I once again had to disengage fsd. It seems like the system didn't recognize the motorcycle or didn't recognize that it was traveling than slower than my vehicle.