2023 Tesla Model 3 lane departure problems

“Vehicle: 2023 Tesla Model 3 RWD, VIN 5YJ3E1EA3PF556059. Since the FSD software update from V12 to V14.1 (Supervised v14.1 Lite) in early August 2026, the vehicle repeatedly issues false 'apply steering wheel force' warnings while my hands are on the wheel, followed by sudden disengagement of Full Self-Driving without apparent cause. This has happened multiple times, including at highway speeds, which I consider a safety hazard. The Tesla service center in Miami Gardens has been unable to fix the problem after multiple visits. I emailed Tesla's North America service team on September 23, 2026 (with a photo of the in-car warning) and sent a follow-up on September 30, 2026; I have received no response.”

“I was traveling east on I-215 in [XXX] , exiting on [XXX] . I was in the RH lane, signaling to turn Rt. A small commercial van was in the two lanes Left of me with no turn signal on. Suddenly the van began coming into my lane. I turned my steering wheel slightly to the Rt to avoid a collision. Suddenly the autocorrect turned my wheel sharply Rt, then sharply Left. The car was rocking so sharply I feared a rollover or collision. The blind spot camera on the driver’s side did not pick up the van on my Left.”

“While driving at highway speed under normal operating conditions with the accelerator engaged and no braking input, the vehicle suddenly experienced a sustained 6-minute-12-second ADAS/EDR degradation cascade. This included OVERHEAT_PROTECT_FANONLY activation, repeated AEB_CAN_STATE_UNAVAILABLE toggling, FAULT 14.0 brake-signal mismatch, impossible negative brake pressures, and 27+ ABS/EBD/ESP fault-lamp cycles. No warning lamps, messages, or alerts appeared prior to the cascade. The degradation resulted in loss of braking assist and stability control functions, causing two collision events (right-side T-bone impact followed by curb strike) despite no driver error or input. This failure mode matches the exact ADAS/EDR degradation pattern under active NHTSA Engineering Analysis EA26002. Full technical details, timestamps, fault logs, sampling gaps, and EDR data are provided in the attached narrative PDF and supporting CSV files.”

“The Tesla ran a red light on two separate occasions while in full self driving mode. The first time it went through without me being able to intervene. Given it had done it before, the second time I was able to stop it. Both times occurred at the intersection of [XXX] and [XXX] . It has not done it at other intersections.”

“During driving, Tesla car spontaneously stated multiple active safety features and regenerative braking were no longer available and stopped working during driving with multiple warnings appearing. Driver safety at risk during this as well as others safety due to the lack of functioning. The car was taken to Tesla service center and was explained that front lower lateral suspension links were damaged by "impact" although the car was never in an impact or accident preventing proper alignment and functioning of the car. The part has been since repaired and currently undergoing further investigation for warranty dispute.”

“Curvature Assist feature agressively brakes while driving at highway speeds. This is supposed to slow down for curves, but frequently intervenes for straight, clearly marked lanes. Feature cannot be turned off. Drivers behind me have gotten agitated several times for the sudden, harsh braking, and I do not feel comfortable driving this car.”