Warning problems of the 2025 Tesla Model 3

I am filing a formal safety complaint regarding a severe braking and stability control failure that resulted in unpredictable, highly dangerous vehicle behavior. While driving, the vehicle displayed a cascade of critical system failures, throwing error codes app_w009 (aeb disabled), di_a222 (stability control disabled), di_a223 (traction control disabled), esp_a080, and esp_a067 (esp/abs sensor faults). This concurrent breakdown caused a total loss of critical safety features: anti-lock braking (abs), automatic emergency braking, traction control, "vehicle hold," and "hill start assist. " because the vehicle completely lost its ability to hold its position, it unexpectedly free-rolled backward on an incline when I anticipated it to remain stationary or move forward. This uncommanded movement created an immediate collision hazard. Of serious concern is that despite a total breakdown of vital braking and stability assists, the vehicle remained fully drivable and only advised me to "drive with caution. " allowing a car to remain operational under these severe fault conditions is an unacceptable risk. A driver expecting normal ev behavior (like vehicle hold and regenerative braking) is placed in immediate danger when the vehicle suddenly free-rolls without warning. The software should classify a multi-system abs/esp failure as a critical emergency requiring an immediate safe shutdown, rather than suggesting it is safe to continue driving.

On March 14, 2026, at 20:54:21 utc, while the autopilot system was engaged, the vehicle malfunctioned by initiating a sudden, unprompted right-hand steering command within 0. 3 seconds, resulting in a collision with another vehicle traveling in the adjacent right lane. Telemetry data from the event confirms the system failed to maintain the lane despite the primary steering torque sensor measuring 0. 00 nm, proving no driver input caused the maneuver. This unintended steering event at cruising speed created an immediate safety risk to myself and the occupants of the other vehicle. To date, the manufacturer (Tesla) has declined to perform a technical or remote diagnostic review, redirecting the case to a collision center instead. No warning lamps, audio chimes, or system messages occurred prior to the failure; the vehicle is currently available for inspection and raw csv telemetry logs can be provided to investigators upon request.

Tesla full self-driving (supervised) was engaged at the time of the incident. The vehicle was traveling at low speed on a straight roadway when it unexpectedly initiated a sudden steering maneuver out of its lane toward a roadside structure (outdoor restaurant seating area), resulting in a collision. The driver did not provide steering input prior to or during the maneuver. There were no warning messages or alerts indicating a hazard or need for evasive action before the event. Vehicle telemetry data reviewed after the incident indicates that the steering system executed a rapid, large-angle deflection without corresponding driver input, consistent with a system-initiated maneuver. The system continued to apply throttle during the event. The incident created a direct safety risk to the vehicle occupants and nearby pedestrians due to unintended vehicle path deviation toward a fixed structure. Additional context: when this car was in the repair shop for repairs, we were told that during the replacement of the dashboard/computer system, the technicians observed a persistent system code that would not clear. Tesla technical support was contacted, and the system was ultimately reinstalled to resolve the issue. While the direct connection between this code and the fsd malfunction is unknown, the persistent code may indicate preexisting software system instability. The vehicle has been inspected by repair professionals, and supporting data (telemetry and video) is preserved and available for review upon request. Cause of the malfunction is currently unknown, but evidence indicates a failure in the driver assistance system’s steering control.