2019 Tesla Model 3 lane departure problems

“On September 12, 2026, at approximately 2:05 PM, while operating on Full Self-Driving (FSD v14.1 Lite) on Hardware 3 (HW3), the vehicle experienced a critical, unprompted loss of path control. While traveling on the highway, the vehicle sharply veered off the left side of the roadway, caught air, and violently impacted an emergency barrier, resulting in the destruction of 9 steel poles and causing physical injuries to both the driver and front passenger. Despite the severe frontal impact and structural collision, neither the front nor knee airbags deployed, raising serious concerns regarding the vehicle's crash-sensing algorithms, structural impact detection, and restraint system integration under this software version. This incident highlights major safety risks associated with running computationally heavy FSD stacks on legacy HW3 architecture: 1. Uncommanded Steering Deviations: The system abruptly executed a violent, unprompted hard turn away from the path of travel, indicating severe lane-detection or path-planning failure. 2. Restraint System / Safety Failure: Critical secondary safety systems (front and knee airbags) failed to deploy in a high-impact…”

“Tesla rolled out FSD 14 Lite to hardware, including to my vehicle and it’s become extremely unsafe.The past several days the vehicle will suddenly slow down/break causing people to almost crash into me, make sudden and indecisive lane changes, and constantly rocking the steering wheel left and right. I hope someone takes this seriously and has Tesla revert back to the old software or make changes before someone is killed.”

“Tesla FSD on HW3 vehicles has become very unstable. Users complain the car ping pongs within the lane and occasionally will steer onto the left or opposite lane. This seems to have happened after a recent update between Feb/March 2026. Growing reports of the same issue reported on Reddit. Ping pong tesla fsd Sources: r/TeslaFSD, r/TeslaLounge, r/TeslaSupport Tesla FSD Ping Pong Effect Software Updates Recent Updates: Many users have reported that the ping-pong effect started after recent software updates, particularly 2026.8.6 and 2026.14.3. "Yes, this started for me after the update to 2026.8.6 and continued on 2026.8.6.1" HW3 Issues: Some users with Hardware 3 (HW3) have noted that FSD has become unusable due to this effect. "I'm HW3 Software 2026.14.3 FSD Software V12.6.4 Driving on the highway is completely unusable and would result in a crash if I kept it on." Troubleshooting Steps Camera Calibration: Several users have suggested recalibrating the cameras, which can sometimes help. "Try a camera housing cleaning and a camera calibration" DAS Reset: Performing a Driver-Assist System (DAS) reset has also been recommended. "Also reset the DAS" Cleaning…”

“I was involved in a collision while driving my 2019 Tesla Model 3. The incident occurred on April 2nd 2026 in [XXX] Prior to the collision, the vehicle was operating normally The crash resulted in damage to the front driver-side of the vehicle, including a destroyed headlight and body panel damage. At the time of the incident, weather and traffic was light and normal. The vehicle was set and supposed to head straight when suddenly at the intersection it jerked right and headed straight into another vehicle. I attempted to take control but was unable to due to resistance on the wheel and how quickly the incident occurred. There was no warning or emergency braking which should've also been expected from my tesla. I am submitting this report to document a potential safety concern and request review.”

“I see in today's news that the NHTSA is investigating Tesla's FSD due to accidents in poor visibility, but the articles I've read are not discussing another visibility issue that may actually be more widespread. I already reported concerns with Telsa's FSD in incident 11618812, but I forgot to mention another issue I believe is crucial to the success or failure of Tesla's FSD, and I am surprised to find that nobody is talking about this serious flaw. Because Tesla's FSD relies on camera video only, the vehicle is blind in the dark. I live in a rural area, and on some roads without streetlights or other vehicles nearby illuminating the areas around the vehicle, Tesla's FSD falsely assumes that the side and rear facing cameras are obstructed because they cannot see in the dark. This was also an issue when my son and I drove home through the night from South Carolina. When we hit North Carolina on [XXX] in the middle of the night between cities and no streetlights, traffic was sparse so there was nobody behind or to the sides of the vehicle. Every few minutes, FSD falsely warned us that the cameras were obstructed, and alerted us that FSD's capabilities were…”

“Car intermittently gives me a "reduced power steering" error making it impossible to steer and had to stop in the fast lane on the freeway and reset the car just to get the error to to away I could have been killed and Tesla refuses to have a recall on my year and model and I must pay out of pocket for a new steering rack this is not fair that other models is covered for a recall but not a 2019 model 3”