2024 Tesla Model Y lane departure problems

“Following a software update (2026.38.3.2), without any prior warning messages or symptoms, the vehicle's onboard computer failed on 10/26/26, which resulted in the loss of critical driver-assistance and safety systems. The affected systems included the backup and side-view cameras, blind-spot monitoring, emergency braking, collision warning, lane departure warning/assistance, rear cross-traffic alert, GPS, and adaptive headlights. The loss of the cameras and blind-spot monitoring reduced my ability to identify surrounding vehicles and pedestrians, while the loss of automatic emergency braking, collision warnings, and lane-assistance features eliminated important safety functions designed to help prevent accidents. The problem was confirmed by a Tesla Service Center. According to Tesla's diagnostic findings: "In this instance, your vehicle's computer consists of both a primary and a secondary component. Our diagnostic findings indicate that both parts failed, not due to an internal short, but because of a complete loss of communication between the primary and secondary units." Tesla inspected the vehicle and determined that the computer required complete…”

“My 2024 Tesla Model Y (VIN [XXX]) has lost all forward camera-based safety and driver assistance functions. The vehicle displays alerts that Automatic Emergency Braking is unavailable, Park Assist is unavailable, adaptive headlight features are unavailable, and that self-driving is degrading and the vehicle may stop. Autopilot and Full Self-Driving will not engage. The side repeater cameras and the rearview camera still display images normally on the touchscreen, so the failure is not a loss of video display. The loss of Automatic Emergency Braking and forward collision warning means the vehicle has no automated protection against a frontal collision, and the loss of adaptive headlights and auto high beam means the high beams no longer dim for oncoming traffic. I performed a touchscreen reboot and a full power-off reset, and the condition returned. The vehicle is equipped with HW4 hardware and falls within the model years covered by NHTSA campaign 25V002000 (Tesla SB-25-00-001) concerning a computer circuit board short, though my VIN was not included in that recall population. I am reporting this because a vehicle sold with these active safety systems is now…”

“SEVERE DEFECT: Unprompted autonomous steering overrides manual driving. When Autopilot is OFF, Emergency Lane Departure Avoidance (ELDA) violently yanks the steering wheel, steering TOWARD hazards like oncoming traffic on the left or a mountain/rock wall past the curb on the right. This creates a severe collision risk, overriding safe manual input.DOCUMENTED PROOF: Provided Tesla Service (Palo Alto) over 12 timestamps and several dashcam footage. Technicians physically verified NO internal/external camera obstructions across TWO separate visits. Moving a transponder failed to resolve it.TESLA REFUSAL: Service Center has canceled TWO other service requests without fixing the defect, claiming it the 'system is working as intended.' Crucially, the Manager Jay explicitly admitted this dangerous steering override is a 'known issue for vehicles without FSD' operating on an older, separate software stack prone to these errors. To resolve this critical safety hazard, he explicitly suggested I purchase Tesla's premium Full Self-Driving (FSD) upgrade, claiming the FSD stack fixes it. Tesla is fully aware their base active safety software stack is defective and steers…”

“On XXX at approximately 7:23 a.m., a 2024 Tesla Model Y was traveling westbound on [XXX] in [XXX] in the middle lane at approximately 71 mph with Full Self-Driving (FSD) engaged. While traveling in traffic, the vehicle suddenly initiated a lane change toward the right lane without providing a warning or sufficient opportunity for the driver to respond. While the Tesla was executing the lane change, a vehicle traveling behind it collided with the left side of the Tesla. Following the impact, the driver manually took control and brought the Tesla to a complete stop on the right side of the highway. The system suspected of malfunctioning is Tesla’s FSD driver-assistance system, particularly its automated lane-selection and lane-change functions. The exact cause has not been determined. The vehicle and its electronic data were preserved. Currently, non-inspection was done. The unexpected maneuver placed the Tesla and surrounding motorists at risk because it occurred without warning at highway speed in active traffic and resulted in a collision. The driver had to intervene manually after the impact to control and stop the vehicle safely. At the time of this report,…”

“On June 7, 2026, I was driving westbound on I-290 in the leftmost lane in a 2024 Tesla Model Y. I recall FSD (Supervised) was engaged and making a lane change into the left lane. Instead of settling in the lane, the vehicle continued left and struck the divider/median. I braked. The vehicle then bounced back and moved right toward a large truck and collided. I did not receive a takeover warning before the event. The front bumper came off and the vehicle became inoperable. A fire truck traveling behind me blocked traffic after the crash. Tesla event data records a Crash Algorithm Wake-Up at about 9:49 a.m. Central and includes speed, steering, braking, acceleration, ABS, lane-assist, and cruise-control signals. I reported the safety concern to Tesla and asked for review of the FSD/software issue and data, but I have not received written findings. I do not have an expert determination that FSD caused the crash. I am asking NHTSA to review the incident and data for a possible driver-assistance, steering, or lane-control safety defect.”

“On 7/22/2026 between 6pm and 7pm PST, I was driving my Tesla Model Y on I-405 southbound in Orange County, CA, between the Westminster Blvd exit and Exit 73, with Full Self-Driving (Supervised) engaged. The incident occurred at an express lane ingress/egress transition zone where a physical barrier separates the express and general-purpose lanes. While in FSD mode, the vehicle initiated a lane change on its own. During the lane change, the FSD system misjudged the lane boundary and steered the vehicle into the lane divider/barrier. The vehicle struck the divider on the front right side. The failed system is the FSD/automated steering and lane change function. No forward collision warning sounded and no automatic emergency braking activated before impact with the fixed barrier. There were no warning lamps, alerts, or symptoms prior to the failure; the system initiated and executed the lane change without indicating any problem. The impact damaged the front right body panel, front right bumper area, and the right headlight. My safety and the safety of vehicles in adjacent lanes was put at risk, as the collision occurred at roadway speed during an automated…”