2026 Tesla Model Y driver assist problems

BACK OVER PREVENTION: WARNINGS

i was in FSD mode and my car began parallel parking.As the car was in reverse it automatically accelerated and crashed into the car behind me. I did not step on the accelerator pedal, nor the brake and my hands were not on the steering wheel. I in no way caused this accident. What is most surprising is that there was no warning response. Normally if I get too close to any object a color warning shows up on the screen, if I decide to make a change while driving the screen comes up with 4 options as to why I took control but in this case with the car hitting an object there was no response at all.Teslas standard answer is always that it's my fault. I know what happened and it was not my fault.I now have a repair estimate for $1,897.98 which I must be responsible for

NHTSA complaint #11758297 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

This is what happened: While Full Self-Driving (FSD) was engaged, the vehicle approached an intersection and appeared unable to correctly follow the roadway. Instead of following the intended road path, the vehicle continued forward, drove over the curb, and struck a road sign. The impact knocked the sign down, and the sign subsequently struck the vehicle, including the roof glass. The roof glass shattered and small pieces of glass entered the cabin, exposing both the driver and front passenger to a safety risk. Vehicle data obtained after the incident shows that the vehicle was in ACTIVE_FSD leading up to the collision. FSD changed from ACTIVE to UNAVAILABLE approximately 1.5 seconds before the crash algorithm wake-up. Significant braking occurred only very close to the collision, and no Automatic Emergency Braking intervention was recorded during the incident window. The data also shows multiple substantial steering movements shortly before the collision. Accelerator-pedal data does not establish driver acceleration as the cause of the collision. The available samples show an accelerator position of 2.0% shortly before the collision and 0.0% in the next recorded sample. The driver applied the brake shortly before impact. There were no prior warning lamps or messages indicating that FSD was about to become unavailable before the vehicle departed the roadway. The vehicle has been inspected/repaired following the collision, and vehicle data relating to the incident has been obtained and preserved. Police responded to the collision, and the incident was also reported to insurance. A police report was filed, and the case number is 2026-07160174. I have not yet received the formal CR-4 crash report. Following the collision, I experienced significant psychological distress and trauma-related stress symptoms as a result of the incident.

NHTSA complaint #11758061 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

On August 15, 2026, at approximately 5:00 PM, the vehicle was being driven with Full Self-Driving (Supervised) engaged during light rain. As the vehicle approached traffic ahead, it did not slow or brake as expected. The driver recognized that the vehicle was not slowing and attempted to intervene manually by pressing the brake pedal multiple times. The driver reports that despite these attempts, the vehicle did not slow or respond to the brake pedal as expected, and a collision occurred. There were no known warning lamps or warning messages indicating a braking-system problem prior to the incident. The vehicle has not yet been inspected to determine the cause of the reported braking behavior. The incident has been reported to the manufacturer, and a request has been made to preserve and review available vehicle data surrounding the collision, including braking inputs, vehicle speed, Full Self-Driving status/actions, warnings, diagnostic information, and safety/event data. The vehicle is available for inspection. At this time, the cause of the failure to slow as expected is UNKNOWN.

NHTSA complaint #11757356 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

On August 15, 2026, at approximately 5:00 PM, the vehicle was being driven with Full Self-Driving (Supervised) engaged during light rain. As the vehicle approached traffic ahead, it did not slow or brake as expected. The driver recognized that the vehicle was not slowing and attempted to intervene manually by pressing the brake pedal multiple times. The driver reports that despite these attempts, the vehicle did not slow or respond to the brake pedal as expected, and a collision occurred. There were no known warning lamps or warning messages indicating a braking-system problem prior to the incident. The vehicle has not yet been inspected to determine the cause of the reported braking behavior. The incident has been reported to the manufacturer, and a request has been made to preserve and review available vehicle data surrounding the collision, including braking inputs, vehicle speed, Full Self-Driving status/actions, warnings, diagnostic information, and safety/event data. The vehicle is available for inspection. At this time, the cause of the failure to slow as expected is UNKNOWN.

NHTSA complaint #11757356 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

The contact owns a 2026 Tesla Model Y. The contact stated that while driving at an undisclosed speed with the Full Self Driving Mode activated, the vehicle struck the garage wall, damaging the rear passenger’s side door. No injuries were sustained. The contact stated that the dealer had previously provided mobile service to replace the camera and that a second dealer, Tesla White Plains (250 Tarrytown Rd, White Plains, NY 10607), had performed a hard reset on the vehicle due to phantom braking; however, the failure persisted. The dealer was made aware of the failure but canceled an upcoming appointment and informed the contact that there was no failure found. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 13,001.

NHTSA complaint #11757495 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

While returning the Tesla during a demo drive, the car suddenly braked extremely hard in the middle of the road for no reason. It was bright and sunny, and we were coming up to a green light. It caused me to slam my head back into the seat. There was seemingly no reason for the emergency braking, and if someone were behind me, it would have caused a collision.

NHTSA complaint #11755731 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

On the highway, a vehicle in the lane next to me on the right moved towards the white dividing line, but never actually crossed into my lane. My Tesla was operating on Full Self-Driving (Supervised). The system miscalculated the front vehicle's trajectory and severely overreacted to it approaching the line. Without driver input, the FSD system initiated sudden, heavy braking and violently swerved to the left, crossing the lane line. Because the Tesla swerved suddenly into the left lane, the driver already occupying that lane was unable to avoid a collision, striking the left rear corner of my vehicle. I have video recordings from my Tesla that provides objective proof that the vehicle in front did not sideswipe or cut off my car, but rather that an abrupt vehicle automation failure forced my car out of its lane, I had no chance to react quick enough to avoid the accident. It also provides context as to why the driver behind me could not avoid the impact. I have preserved the video files and am ready to submit them to you immediately. Best regards [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11755281 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

On the highway, a vehicle in the lane next to me on the right moved towards the white dividing line, but never actually crossed into my lane. My Tesla was operating on Full Self-Driving (Supervised). The system miscalculated the front vehicle's trajectory and severely overreacted to it approaching the line. Without driver input, the FSD system initiated sudden, heavy braking and violently swerved to the left, crossing the lane line. Because the Tesla swerved suddenly into the left lane, the driver already occupying that lane was unable to avoid a collision, striking the left rear corner of my vehicle. I have video recordings from my Tesla that provides objective proof that the vehicle in front did not sideswipe or cut off my car, but rather that an abrupt vehicle automation failure forced my car out of its lane, I had no chance to react quick enough to avoid the accident. It also provides context as to why the driver behind me could not avoid the impact. I have preserved the video files and am ready to submit them to you immediately. Best regards [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11755281 — an unverified report by a vehicle owner.

LANE DEPARTURE: ASSIST

On the highway, a vehicle in the lane next to me on the right moved towards the white dividing line, but never actually crossed into my lane. My Tesla was operating on Full Self-Driving (Supervised). The system miscalculated the front vehicle's trajectory and severely overreacted to it approaching the line. Without driver input, the FSD system initiated sudden, heavy braking and violently swerved to the left, crossing the lane line. Because the Tesla swerved suddenly into the left lane, the driver already occupying that lane was unable to avoid a collision, striking the left rear corner of my vehicle. I have video recordings from my Tesla that provides objective proof that the vehicle in front did not sideswipe or cut off my car, but rather that an abrupt vehicle automation failure forced my car out of its lane, I had no chance to react quick enough to avoid the accident. It also provides context as to why the driver behind me could not avoid the impact. I have preserved the video files and am ready to submit them to you immediately. Best regards [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11755281 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

While driving a 2026 Tesla Model Y Premium on [XXX] at approximately [XXX] PM on [XXX] using Full Self-Driving (FSD) Supervised mode, the vehicle was traveling in the center lane (lane 2 of 3) when it ran over a large whole tire (commercial truck-sized) that was positioned in the center of the lane. The FSD system failed to detect or avoid the tire prior to impact. This incident demonstrates a critical safety limitation: Tesla FSD cannot detect large road obstacles such as a whole commercial truck tire positioned in the center of a highway lane at night. The FSD system showed no warning, took no evasive action, and did not alert the driver prior to the impact. Prior to the incident, there were no warning lamps, error messages, or any abnormal symptoms. All systems were functioning normally. Following the collision, a "Coolant Low - Schedule Service / Climate and driving performance may be limited" warning appeared immediately on the display screen. Upon inspection, all coolant had leaked out completely. Damaged components include: underbody, front bumper lower section, and cooling pump. The cooling pump damage is particularly concerning as it prevents proper battery temperature regulation, creating a significant risk of battery overheating and potential fire. The vehicle is currently at a Tesla-approved collision center. Inspection is still in progress. The vehicle has been reviewed by Tesla Service Center technicians and insurance representatives. Safety concern: Tesla FSD failed to detect and avoid a large, visible whole truck tire in the center of the highway lane at night, resulting in significant underbody damage, complete coolant loss, and cooling pump failure — posing serious battery fire risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11755078 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

While driving a 2026 Tesla Model Y Premium on [XXX] at approximately [XXX] PM on [XXX] using Full Self-Driving (FSD) Supervised mode, the vehicle was traveling in the center lane (lane 2 of 3) when it ran over a large whole tire (commercial truck-sized) that was positioned in the center of the lane. The FSD system failed to detect or avoid the tire prior to impact. This incident demonstrates a critical safety limitation: Tesla FSD cannot detect large road obstacles such as a whole commercial truck tire positioned in the center of a highway lane at night. The FSD system showed no warning, took no evasive action, and did not alert the driver prior to the impact. Prior to the incident, there were no warning lamps, error messages, or any abnormal symptoms. All systems were functioning normally. Following the collision, a "Coolant Low - Schedule Service / Climate and driving performance may be limited" warning appeared immediately on the display screen. Upon inspection, all coolant had leaked out completely. Damaged components include: underbody, front bumper lower section, and cooling pump. The cooling pump damage is particularly concerning as it prevents proper battery temperature regulation, creating a significant risk of battery overheating and potential fire. The vehicle is currently at a Tesla-approved collision center. Inspection is still in progress. The vehicle has been reviewed by Tesla Service Center technicians and insurance representatives. Safety concern: Tesla FSD failed to detect and avoid a large, visible whole truck tire in the center of the highway lane at night, resulting in significant underbody damage, complete coolant loss, and cooling pump failure — posing serious battery fire risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11755078 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

On [XXX], at approximately [XXX], my 2026 Tesla Model Y (VIN: [XXX], delivered [XXX]) was involved in a rear-end collision while the Full Self-Driving (FSD) system was actively engaged. The dashcam footage clearly shows "Self Driving" displayed in blue on the instrument panel at the time of the incident, with the vehicle traveling at 3 KM/H in Drive (D) mode. What failed: The FSD/ADAS system failed to detect the stopped vehicle ahead and did not apply braking or issue any collision warning prior to impact. Safety risk: The system had full control of the vehicle at the time of the collision. I was not manually operating the vehicle. The failure of the FSD system to respond appropriately caused a rear-end collision. Dealer/service confirmation: Not yet confirmed by dealer. Incident occurred 2 days after vehicle delivery. Inspections: Under review by insurance. Police report pending. Dashcam video evidence preserved. Prior warnings: No warning lamps or alerts were displayed prior to the collision. The FSD system gave no indication of the impending failure. Dashcam footage showing active "Self Driving" status at time of crash is available upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11754864 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

On [XXX], at approximately [XXX], my 2026 Tesla Model Y (VIN: [XXX], delivered [XXX]) was involved in a rear-end collision while the Full Self-Driving (FSD) system was actively engaged. The dashcam footage clearly shows "Self Driving" displayed in blue on the instrument panel at the time of the incident, with the vehicle traveling at 3 KM/H in Drive (D) mode. What failed: The FSD/ADAS system failed to detect the stopped vehicle ahead and did not apply braking or issue any collision warning prior to impact. Safety risk: The system had full control of the vehicle at the time of the collision. I was not manually operating the vehicle. The failure of the FSD system to respond appropriately caused a rear-end collision. Dealer/service confirmation: Not yet confirmed by dealer. Incident occurred 2 days after vehicle delivery. Inspections: Under review by insurance. Police report pending. Dashcam video evidence preserved. Prior warnings: No warning lamps or alerts were displayed prior to the collision. The FSD system gave no indication of the impending failure. Dashcam footage showing active "Self Driving" status at time of crash is available upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11754864 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

On [XXX], at approximately [XXX], my 2026 Tesla Model Y (VIN: [XXX], delivered [XXX]) was involved in a rear-end collision while the Full Self-Driving (FSD) system was actively engaged. The dashcam footage clearly shows "Self Driving" displayed in blue on the instrument panel at the time of the incident, with the vehicle traveling at 3 KM/H in Drive (D) mode. What failed: The FSD/ADAS system failed to detect the stopped vehicle ahead and did not apply braking or issue any collision warning prior to impact. Safety risk: The system had full control of the vehicle at the time of the collision. I was not manually operating the vehicle. The failure of the FSD system to respond appropriately caused a rear-end collision. Dealer/service confirmation: Not yet confirmed by dealer. Incident occurred 2 days after vehicle delivery. Inspections: Under review by insurance. Police report pending. Dashcam video evidence preserved. Prior warnings: No warning lamps or alerts were displayed prior to the collision. The FSD system gave no indication of the impending failure. Dashcam footage showing active "Self Driving" status at time of crash is available upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11754864 — an unverified report by a vehicle owner.

BACK OVER PREVENTION: WARNINGS

On the day after taking delivery of my 2026 Tesla Model Y, FSD reversed into a visible stationary garage pillar while backing into my garage. The vehicle did not stop before impact and stopped only after contacting the pillar, resulting in more than $6,000 in vehicle damage. The following day, while FSD was attempting a left turn at an intersection, the vehicle nearly entered the opposing-traffic lane before making several hesitant steering corrections. I disengaged FSD and completed the turn manually to avoid a potential collision. Both incidents occurred within two days of delivery. Tesla has opened a service case, escalated the matter to its engineering team for review, and I have requested preservation of all available vehicle data. I am submitting this complaint because these incidents raise concerns about the safety of FSD behavior.

NHTSA complaint #11753833 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

On the day after taking delivery of my 2026 Tesla Model Y, FSD reversed into a visible stationary garage pillar while backing into my garage. The vehicle did not stop before impact and stopped only after contacting the pillar, resulting in more than $6,000 in vehicle damage. The following day, while FSD was attempting a left turn at an intersection, the vehicle nearly entered the opposing-traffic lane before making several hesitant steering corrections. I disengaged FSD and completed the turn manually to avoid a potential collision. Both incidents occurred within two days of delivery. Tesla has opened a service case, escalated the matter to its engineering team for review, and I have requested preservation of all available vehicle data. I am submitting this complaint because these incidents raise concerns about the safety of FSD behavior.

NHTSA complaint #11753833 — an unverified report by a vehicle owner.