Adaptive Cruise Control Problems of Tesla Model Y - part 1

I am submitting this report based on my personal experience operating a Tesla Model Y equipped with full self-driving (fsd). I have used fsd for approximately four years and have extensive experience with the system. During several recent road trips through heavily forested and mountainous areas, including yosemite national park and multiple locations throughout oregon, I repeatedly observed similar unexpected behavior under the same environmental conditions. On roads where dense tree cover creates alternating bands of sunlight and shadow across the pavement, the vehicle occasionally performs abrupt deceleration, unnecessary braking, or jerky speed adjustments despite there being no visible hazards, obstacles, pedestrians, or animals in the roadway. I cannot determine the technical cause, but based on repeated observations at different locations, it appears that rapidly changing lighting conditions or high-contrast tree shadows may present a perception challenge for the vision-based driving system. This is only my observation and not a technical conclusion. My concern is that unexpected braking or sudden speed changes could surprise following drivers and increase the risk of rear-end collisions, particularly on two-lane highways or winding mountain roads. While I remained attentive and was able to supervise the vehicle, these unexpected reactions occurred multiple times under similar conditions. I respectfully request that NHTSA evaluate this type of real-world driving environment as part of its ongoing assessment of advanced driver assistance and automated driving systems. Forested roads and mountain highways are common throughout the united states, and ensuring reliable performance in these challenging lighting conditions is important before wider deployment of autonomous driving technology. I would be happy to provide additional information if needed.

See all problems of the 2023 Tesla Model Y 🔎.

Safety features on vehicle stopped working after software update was pushed to my vehicle. Gps, all cameras including backup camera and ones used for blind spots, and cruise control have all stopped working. Time displays incorrectly due to gps issue and night mode stays on so rear view & back window stay dark making it hard to see other vehicles around me during the day. I’ve followed all recommended steps to resolve and issue persists.

See all problems of the 2021 Tesla Model Y 🔎.

Fsd / vision system , no warnings , the vehicle is turning left and right on a straight road sunny conditions. I have a video that it wouldn’t let me attach to the case. I had Tesla service review this and they told me it’s standard behavior, this never occurred before and is dangerous and unusable. Autopilot has an issue that Tesla themself can’t detect and when I get into an accident it’ll be too late. I’ve been complaining about this for 3 months and Tesla keeps telling me it’s standard behavior, this never happened before the car used to drive straight, brand new tires front and back , blanket and aligned the car drives straight while not in autopilot, issue is directly related to fsd and Tesla autopilot.

See all problems of the 2022 Tesla Model Y 🔎.

While driving on the highway with Tesla fsd engaged, the vehicle activated the right turn signal and began steering right as if taking an exit. There was no exit ramp, gore area, or valid right-turn path at that location. I took manual control to prevent the vehicle from leaving the highway/entering the shoulder. I believe this could have caused a crash if I had not intervened. I have dashcam footage of the event.

See all problems of the 2024 Tesla Model Y 🔎.

This week, I was driving my Tesla at approximately 65 mph in the middle lane of a six-lane freeway. Autopilot was engaged. Traffic was moving normally, and I was not aware of any obstacle or hazard that would have required emergency braking. Without any warning, the vehicle suddenly applied the brakes and rapidly decelerated until it came to a complete stop in the middle travel lane of the freeway. I was not pressing the brake pedal. The event occurred unexpectedly and created a potentially life threatening safety hazard. My vehicle came to a stop in a high-speed traffic center lane! after I disengaged autopilot and pressed the accelerator, the vehicle responded normally. Immediately following the incident, the display showed the message “autopilot unavailable. ” that message later disappeared, and no additional warning messages remained on the screen. I contacted Tesla to report the incident. Tesla reviewed the vehicle’s logs remotely and later discussed the results with me by telephone. During that conversation, I was told that the event was considered an “anomaly. ” I was also told that the vehicle logs reflected the event approximately one hour from when it actually occurred and that the logs indicated the vehicle was not operating in autopilot at the time of the incident. This information was inconsistent with the event, because autopilot was engaged when the sudden braking occurred. I could not even move to berm. Tesla did not request that I bring the vehicle in for a physical inspection. Instead, I was told there was no reason to have the vehicle examined. During the same conversation, I was encouraged to consider subscribing to Tesla’s full self-driving (supervised) system, which requires an additional monthly subscription, rather than continuing to use autopilot as a result of a question I asked about two plans. Tesla closed my service ticket without performing an inspection indicating there was no benefit spending $$ to essentially receive no additional.

We have owned a 2026 Model Y Tesla for one week and have encountered these dangerous behaviors while in full self drive mode, even in “sloth” mode: 1. Tailgating, repeatedly, while at highway speeds. Controls did not allow me to increase trailing distance while in fsd. 2. Dangerous merging, cutting off other cars. 3. Failure to read surface directions and driving wrong way against oncoming traffic. And this is with only one week of casual driving!.

My Tesla has repeatedly exhibited dangerous behavior while full self-driving (fsd) is engaged. On multiple occasions, the vehicle has stopped for a red light and then proceeded through the intersection while the traffic signal was still red. This has put my family and others at risk on a public roadway and creates a serious safety concern. One documented incident occurred on June 21, 2026, while my family was in the vehicle. During that event, the car stopped at a red traffic light and then proceeded to attempt to run intersection even though the light remained red. This was alarming and dangerous, and it required close driver supervision because the system did not behave in a safe or reliable manner. This was not an isolated incident. My Tesla has run red lights in this same manner on multiple occasions while fsd was engaged. In addition, the vehicle will suddenly stomp on its brakes on a public roadway, which is another serious and unpredictable safety issue. I have taken the vehicle to Tesla regarding these issues, and I was told that this behavior is considered normal and that nothing would be done about it. Tesla’s response was that the software is still being developed, and that this is essentially part of the risk of using the software. These repeated failures involve traffic signal compliance and erratic vehicle behavior that could easily result in a crash or injury. My family has been placed in danger by these events, and I believe this is a serious safety defect that needs to be investigated immediately. I am requesting that NHTSA investigate Tesla’s fsd system for repeatedly stopping at red lights and then proceeding through the intersection while the signal is still red, as well as for sudden unnecessary braking events on public roadways.

Whenever the self driving feature is disengaged, a pop up menu is forced into the user asking for a reason for the disengagement. The user is forced to submit a response for the pop up menu to go away. This menu shifts sections of the screen around and can cause distractions due to the user looking for specific information that is typically there but is not due to the pop up menu.

Using Tesla fsd 14. 3. 3. It began raining hard, causing standing water to pool on the road. The standing water was making the car lose traction and started sliding within the lane, it did change its speed or driving to account for the rain. Fsd was doing over the speed limit and would not slow down slower than the speed limit. Changing the Tesla speed profile from standard to sloth slowed it down to exactly the speed limit but no lower. At this point the car could not maintain its lane, I feared for our safety, so I had to disengage fsd to regain control of the car. Tesla have removed all methods of allowing the driver to maintain accurate speed control of the car and it often ignores speed limit signs, which means it is traveling too slow or too fast for the currently posted speed limit.

Vehicle: 2024 Tesla Model Y date of incident: xxx location: southbound xxx express lanes near the [xxx]/[xxx] exit split in [xxx]. At the time of the incident, Tesla full self-driving (fsd) supervised was engaged. I was traveling in the express lanes and intended to remain in the express lanes. I was not attempting to take any exit. As the roadway approached a lane split/gore area, the vehicle began steering toward the striped boom barriers that prevent drivers from going into oncoming traffic, rather than remaining in the travel lane. There were not impending impact alerts or lane deviation alerts. There were no unusual weather conditions, and I did not observe any road conditions that would have made the lane path unclear to a human driver. As soon as I saw the vehicle veering into the boom barriers, I intervened by taking control of the steering wheel. The system disengagement alert/chime occurred only after I took over. Despite my intervention, the vehicle made contact with the boom barrier assembly. The impact caused significant damage to the windshield and driver's side door frame. Glass entered the passenger compartment. My infant child was in the vehicle at the time. Fortunately, no injuries were sustained. Tesla dashcam footage of the incident was preserved and is available. A claim was opened with Tesla insurance, and I was advised to submit a vehicle malfunction report for review of vehicle telemetry and fsd operation during the incident. After the collision I maneuvered the vehicle back into its lane, exited the toll highway and parked at a nearby shopping center to assess our injuries the vehicle. While there, another Tesla parked near me, and the driver had experience the same exact situation while his Tesla was in autodrive. I am requesting investigation into whether the vehicle's driver-assistance system improperly tracked toward the boom barriers rather than remaining within the intended travel lane. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(.

I was driving down a city street near my home and put my Tesla Model Y in full self driving and looked down for 1-2 seconds to retrieve something from my center console and the warning notifications started going off and before I had any time to react, the car drove into a parked car at approximately 39 mph. I have records showing the car was in full self driving for 5 seconds before impact.

On the evening of June 3, 2026, while driving on the I-575 express lanes in cobb county, georgia, the vehicle’s autopilot/driver assistance system malfunctioned and steered the vehicle into the express lane boom barrier. The boom bar struck the windshield, causing catastrophic windshield failure with glass imploding into the cabin. Glass shards covered the driver’s seat, floor, and dashboard. The driver sustained glass puncture wounds to both forearms and forehead, as well as neck, back, and right arm soft tissue injuries. Component failed: autopilot/adas system. Vehicle is available for inspection. Tesla was notified directly at time of incident. Insurance company has been notified. Sr-13 filed with cobb county. No warning lamps or messages appeared prior to the autopilot malfunction. The root cause of the windshield damage was the autopilot system failure, not driver error or external road debris. Photographic documentation of vehicle damage and driver injuries exists.

* what component or system failed or malfunctioned, and is it available for inspection upon request? fsd. It is available upon request. * how was your safety or the safety of others put at risk? over the course of the last two months since the last fsd update (currently on v12. 6. 4), at least 20 times the vehicle has not properly stayed in the lane under certain circumstances listed below. These circumstances are always the same and it is repeatable and dangerous as the vehicle would have crashed into the center median if I had not intervened. Repeatable conditions: * 79 mph * low curvature highway at highway speeds when turning to the right only. * fsd version 12. 6. 4 with software version 2026. 14. 6 is engaged and in assertive mode. * has the problem been reproduced or confirmed by a dealer or independent service center? Tesla wanted $1k in order to reproduce and diagnose the problem, so I declined. * has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? same as above; Tesla wanted $1k in order to reproduce and diagnose the problem, so I declined. * were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? none of the safety systems fired, including lane departure warning or steering correction. Fsd would not have veered out of the way of the median.

Tesla recently pushed a software update that introduces a major, unavoidable driver distraction right at the most critical moment of driving: the exact second you take manual control back from full self-driving (fsd).   whenever you disengage fsd, a mandatory, multiple-choice survey pops up on the center touchscreen asking why you took over. Unlike previous versions where this would disappear after a few seconds, it now stays on the screen permanently. There is no close button, and it does not time out.   this causes two clear safety hazards while driving: 1 it blocks the screen: the popup actively covers up part of the navigation map and basic screen controls. If you are trying to navigate a tricky intersection or see your route right after taking over, you can't see the map clearly because this giant survey is blocking it. 2 it forces you to look away from the road: because the prompt never goes away on its own, it forces the driver to physically look down, read the small text options, and tap the screen to clear it. Forcing a driver to do a multiple-choice survey while actively managing a manual takeover in traffic is incredibly dangerous. Tesla should not be allowed to use a mandatory, permanent ui popup to collect data while a vehicle is actively moving. It is a severe visual and cognitive distraction at the exact moment a driver needs to be 100% focused on the road. Please investigate this software design and require Tesla to add an automatic timeout or a quick-dismiss button that doesn't require driver interaction.

Adaptive cruise control slams on the brakes at highway speed alleging “curvature assist” on flat, straight roads. Dealer replaced firmware and problem persists. Defect appears to be inherent to adaptive cruise control.

Driver used Tesla fsd (supervised) to park. The car (Tesla Model Y 2023) prepared to park and slowed down. Second before full stop, the car suddenly accelerated on its own without driver stepping on the accelerator. It went onto the curb and knocked over the fence and continue to drive full speed before driver braked hard and stopped the car. Video is available upon request.

At about 2:16 pm on Monday, 5/18/2026, I was driving southeast in the right lane of amaya drive from fletcher parkway in la mesa, CA, planning to turn right across the trolly tracks onto severin drive. There is an intermittent led sign indicating no right turn in the southeast corner of the intersection, just below and to the right of the ground-level stoplight, that illuminates when the trolley is passing so traffic going straight on amaya can still proceed. In the first street view pdf I uploaded, it is not illuminated. I had fsd engaged, and as I approached the intersection the no right turn led was illuminated. If I recall correctly, I assumed fsd would stop for the no right turn led; but instead, it continued to make the right turn. Luckily my son was in the right seat and yelled several times for me to stop, which I did—just a few feet from the crossing arm, which can been seen elevated in the middle of the second street view pdf I uploaded, and which was just coming down for the approaching trolley. By the time I got stopped, the crossing arm was fully down, and as noted above I ended up just a few feet from it, and would clearly and unequivocally have driven under and through it if I hadn’t braked suddenly. It’s clear that this was completely the fault of fsd either not reading or not being aware of the intermittent no right turn led sign. Since fsd clearly doesn’t read no right turn signs, particularly intermittent led signs, the solution seems to make this intersection no right turn whenever the light is green to pass through the intersection on amaya, although this will hold up the cars who would like to turn right when there’s no trolley approaching.

The latest Tesla autopilot software forces users to engage in an autopilot product survey after disengaging autopilot while driving in order to gain access to audio/radio controls. The survey is not dismissible without reading a complicated prompt and choosing a response, and it completely obstructs audio controls until you participate in the survey. The driver therefore cannot turn off music to listen for emergency sirens, pedestrians, or other potential safety cues while driving at any speed, unless the driver also takes eyes off the road to participate in the forced product survey. This is by design and affects all Tesla drivers who use the autopilot feature.

Whenever autopilot is disengaged by the driver, a pop up multiple choice question appears on the screen covering critical car information with no way to get past it except reading and answering the multiple choice question while you are driving. You have to take your eyes off the road to answer the question, it's about the dumbest most unsafe thing I've ever seen from a car company. Please require them to fix it immediately, and apparently a rule needs to be written that pop ups on cars are illegal.

I would like to report a serious safety concern regarding Tesla full self-driving (fsd) on hw3-equipped vehicles. My vehicle repeatedly performs sudden and aggressive braking while fsd is engaged, even when there are no visible obstacles, vehicles, or hazards ahead. In some cases, the vehicle slows dramatically or comes to a complete stop unexpectedly. This creates a significant rear-end collision risk, especially on higher-speed roads where surrounding traffic does not anticipate abrupt braking behavior. This issue has been occurring for approximately one year and appears to have worsened over time and Tesla hasn't released a single fds software update for over a year for hw3 vehicles. I recently brought my vehicle to Tesla service, paid for diagnostics/repair, and the issue still remains unresolved. I have also personally experienced the same behavior in another hw3 Tesla vehicle provided as a loaner from a Tesla service center, which suggests the issue may not be isolated to my individual car. Based on my experience, this appears to affect multiple hw3 vehicles operating with fsd enabled. The unsafe braking behavior causes surrounding vehicles to tailgate closely and react suddenly, increasing the likelihood of accidents. In my opinion, the current fsd behavior on affected hw3 vehicles presents a safety hazard for both Tesla owners and other road users. I believe this issue warrants immediate investigation. Until the root cause is identified and corrected, Tesla should consider disabling or restricting fsd functionality on affected hw3 vehicles to reduce the risk of accidents caused by phantom braking and unsafe autonomous driving behavior.

The Tesla autosteer (equivalent of adaptive cruise control) failed to brake on seeing the car ahead braking. In the 5 seconds before impact, the car ahead had started braking. The autosteer did not brake for the first 3 seconds and then it asked me to take over 2 seconds before collision. It did not apply automatic emergency braking causing me to rear end the car ahead of me on the freeway at around 30mph this is supposed to be a safety driver assist feature which instead was the primary cause of the accident. The take control was too late to avoid collision. This is a serious safety issue.

The vehicle began experiencing repeated autopilot/fsd failures while driving. Symptoms included sudden autopilot disengagements, cruise control becoming unavailable, and loss of road visualization/navigation display functionality. The issue progressively worsened over time. The vehicle was first brought to Tesla service in 2025 for the same overheating-related concern. At that time, Tesla identified a coolant-related issue, topped off the coolant system, and returned the vehicle to service. However, the problem continued and gradually became more frequent and severe afterward. During the most recent service visit, Tesla diagnosed the hw3 autopilot computer as overheating due to a heat transfer failure between the autopilot board and cooling cold plate. Tesla stated that heat generated by the board could no longer be efficiently transferred to the coolant system, causing the autopilot computer to overheat. Tesla further advised that continued operation without repair could eventually impact additional vehicle functions, including the center display screen shutting off due to overheating-related failures. Given the loss of driver-assistance functionality and potential impact to core vehicle systems, I am submitting this report so the issue is documented as a potential thermal management or hardware reliability concern involving the hw3 autopilot computer system.

I am reporting a software-induced driver distraction defect in Tesla’s full self-driving (supervised) system, specifically the post-disengagement “why did you intervene?” dialog introduced in software 2026. 2. 9. 8 and modified in 2026. 2. 9. 9 and 2026. 2. 9. 10, running fsd v14. 3. 2. Every time the driver disengages fsd via steering, brake, or accelerator input, a modal dialog appears on the center touchscreen asking the driver to categorize the intervention. It presents four options (navigation, preference, discomfort, critical) plus a voice memo prompt. The dialog cannot be dismissed or deferred. It remains on screen indefinitely until the driver reads the prompt and taps a selection. This creates a serious safety hazard: the dialog appears the moment the driver has resumed manual control, often in response to an unsafe fsd action requiring immediate attention to the road. Forcing the driver to read text and make a multi-choice touchscreen selection during this high-cognitive-load transition directly conflicts with NHTSA’s driver distraction guidelines for in-vehicle devices. The dialog occupies a large portion of the center display and obscures the navigation map and surrounding-vehicle visualization, removing situational awareness at the moment it is most needed. Because it cannot be dismissed, drivers are coerced into touchscreen interaction while driving, including in active traffic, intersections, merges, and lane changes. The forced-choice design also incentivizes drivers to tap any option to clear the screen, defeating the stated data-collection purpose and increasing eyes-off-road time. Tesla provides no setting to disable this dialog. I request NHTSA investigate this as a driver distraction defect and require Tesla to provide a dismiss option, defer the prompt until park, or remove the forced-interaction requirement. I am the vehicle owner and experience this on every fsd disengagement.

Hello, I am not writing about a specific incident, but rather wanted to alert the NHTSA to a potentially dangerous development with Tesla's full self-driving (fsd) technology. In the latest software update being pushed to owners, Tesla now forces drivers to provide feedback if they disengage the fsd system for any reason. This feedback comes in the form of a box on the screen and it cannot be closed. You cannot interact with any part of the vehicle infotainment system until you complete the feedback. I believe that this can cause safety issues, especially in a stressful situation if someone is trying to access the car's map system, for example. Even in normal situations, the driver would be required to read the options and make a selection on the screen - while still driving. I would highly recommend the NHTSA look into this, as I believe this is a very shortsighted policy that will needlessly endanger drivers, other drivers, pedestrians and everyone on the road. To be clear for form purposes: I am not writing about a specific incident, but I am submitting this information via this form because I do not see a general information form.

My 2021 Tesla Model Y hw3 experienced complete failure of all cameras, gps, automatic emergency braking, and adaptive cruise control following the installation of software update 2026. 8. 6. 1 — the ota remedy update issued by Tesla for NHTSA recall 26v283000. The vehicle was fully functional prior to this update. The failure was confirmed and reproduced by Tesla's authorized service center. The service advisor confirmed in writing: "during the update, the computer failed to reboot properly. We attempted to perform a 12v reset but unfortunately it is still stuck in the boot loop state. " the autopilot ecu (primary/turbo a) is stuck in a permanent boot loop and cannot be recovered by software means. Safety impact: all cameras including rearview camera are completely non-functional. Automatic emergency braking and all adas features are disabled. The vehicle cannot safely detect obstacles or pedestrians. Gps navigation is frozen. Tesla has confirmed the computer requires replacement but is classifying it as a customer-pay repair citing expired warranty, despite the failure occurring during Tesla's own recall remedy software deployment. This vehicle meets every technical criterion of recall 26v283000 — hw3 hardware, 2021 Model Y, software version 2026. 8. 6. 1, complete camera failure — but does not appear in the recall VIN database. I am requesting NHTSA review whether this VIN should be included in recall 26v283000 or a related investigation.

Recurring camera and autopilot defect on a 2023 Tesla Model Y (hw3 with in-cabin camera, in scope for NHTSA recall 23v838). 7 service visits in 13. 5 months and ~14,000 miles of my ownership. Tesla verified the camera/autopilot defect in writing on 12/5/2025 and replaced the upper quad camera cover (p/n 1755687-00-b) and interior camera (p/n 1588124-s0-I). Same defect returned by 4/27/2026. On 4/28/2026 Tesla service issued a could not duplicate citing 'no log data showing signs of autosteer having an issue or any camera blocked alerts. ' but Tesla's own VIN-linked telemetry, which Tesla provided me via privacy portal data request, contains: 28 autopilot fault events on 14 of 27 retained days; 1 aborting event matching my report to the minute; and 17 highway-speed (>=50 mph) phantom-brake-class hard decelerations <= -0. 20 g. The worst event: 4/28/2026 at 2:12 pm edt, less than 90 minutes after Tesla returned the vehicle. Autopilot was in active_nominal state with cruise engaged at 63. 6 mph. System produced an unprompted -0. 252 g (-2. 47 m/s^2) deceleration. Driver was not braking; system was driving. Additional phantom brakes: -0. 297 g at 62. 9 mph on 5/2/2026; -0. 294 g at 70. 0 mph on 5/3/2026. Multiple take over immediately alerts without explanation. Camera blocked alerts in clear conditions. Driver-monitoring system flagged 'hands not detected' on 339 of 684 monitoring detection events during the 27-day window despite hands being on the wheel — the recall remedy mechanism is failing on this vehicle. This vehicle is in scope for NHTSA recall query rq24009 (open), investigating whether the 23v838 ota remedy actually fixed the underlying autosteer defect. My data is direct fleet-level evidence the remedy did not work on this VIN. Currently in active new vehicle limited warranty.

I have been a user of Tesla's "full self driving" technology for four years. In one of the last major updates, the company removed the ability of the driver to manually set a "cruise control set point" to maintain a safe speed. Instead, they employed a new system with five "drive profiles," which included "sloth," "chill," "standard," "hurry," and "mad max. " the problem is that only two of those stay anywhere near the speed limit. "sloth" will go the speed limit, "chill" is about 2 mph over the speed limit, "standard" is about 7 mph over the speed limit, "hurry" is 12 mph over the speed limit, and "mad max" is probably 15-17 mph over. Sloth and chill will remain in the right lane, rarely passing another vehicle, but all the others will include lane changes. And all of these profiles do not maintain a safe following distance. Users have been complaining about the cars tailgating, sometimes as close as 3 car lengths at 70 mph. However, sometimes conditions necessitate slower speeds. . . Like work zones. I live near denver, and I-70 has a work zone that will be in existence until 2029. The car doesn't recognize the 45 mph speed limit, bouncing back and forth between 45 and 65. Fsd must be disengaged completely to follow the 45 mph speed limit. Which brings up the other problem. In many areas, the speed limits are wrong. In texas, there are areas where the speed limit is 70, and the car thinks it's 55. In new mexico, the speed limit is 70, but the car thinks it's 60. There is no speed profile that will maintain the legal limit. Tesla also has a mechanism that's supposed to allow users to report problems, but some of these I've been reporting for over three years. They refuse to tell us where we can update the information (grok says "here," tom tom, open street maps), and they are not fixing the speeds on the maps.

I am reporting two unresolved safety-related defects on my 2021 Tesla Model Y (VIN: [xxx] ) that occurred following paid service at Tesla's league city service center on 04/16/2026 defect 1 — computer and sensor system failure: the vehicle's onboard computer cuts in and out intermittently. Sensors fail during operation and the problem worsens significantly in high-temperature conditions. Tesla vehicles rely on their computer and sensor systems for core safety functions including collision avoidance, autopilot, and driver assist features. Intermittent failure of these systems while operating the vehicle is a safety hazard to the driver and the public. Defect 2 — glove box inoperable: the glove box does not open following Tesla service. The glove box in Tesla vehicles houses key vehicle documentation and is integrated into the vehicle's locking and security system. I paid $2,497. 50 for service on [06/16/2026]. Both defects were either caused or left unresolved by that service. I have notified Tesla service staff directly and followed up multiple times over more than four weeks. Tesla has not responded, has not scheduled any repair, and has not refunded my money. I am filing this complaint because (1) the sensor and computer failures present an active safety risk during operation, (2) Tesla has ignored all attempts to resolve this, and (3) public reviews indicate this is a pattern affecting multiple consumers. I request that NHTSA investigate and determine whether a safety defect investigation or recall is warranted. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On April 16, 2026 around 7:30pm CT, I was driving a Tesla Model Y 2023 on I-35 near downtown austin. There was an extreme traffic jam, I turned on the auto pilot so it can cruise by itself without touching anything. It worked for a while, but suddenly it veered off to a lane on my right side, crashing into a large truck on the front right. This damaged all the front and passenger side fender. The car had to be towed. I used this feature many times in the past, it always stayed within the lane. This time it acted erroneously. This should not be marketed as "auto pilot" that people may lose their lives due to insufficient safety guard in the system. Fortunately the traffic was moving very slowly, no one was hurt in my case. I got all incident data downloaded from Tesla to prove its fault. Based on the data, the autopilot system had a fault starting at 12:50pm and 14:55pm, and was disabled at 15:59pm, but there were no warning as I turned it on when I drove on I-35 around 7pm. See the attached data file (highlighted rows, the claim system doesn't allow the original excel file to be uploaded).

The standard cruise control is extremely dangerous. The problem is what I hear is called ghosting. When driving using cruise, and there are no other vehicles nor any other objects such as animals or humans. The car will suddenly decelerate almost to the point of a complete if not overridden by manual takeover. I am under the impression that this is intentionally be done by Tesla, so that you will subscribe to their full self driving service. This can and will cause accidents in traffic.

I am reporting a serious safety concern involving my Tesla Model Y. While driving, the vehicle’s main center screen (mcu) suddenly failed and entered a continuous reboot loop. This resulted in the loss of critical driving information and controls, including navigation, camera display, and vehicle system status. The issue occurred without any warning and nearly caused a serious accident, as I was unable to safely monitor essential driving information. This failure made the vehicle extremely unsafe to operate. The problem appears to be related to a known mcu system failure affecting some Tesla vehicles. I am concerned that this issue may present a broader safety risk for other drivers. Please investigate this matter for potential safety defects.

I believed Tesla full self driving (fsd) was in effect. My Tesla proceeded at 35 miles an hour toward a stop sign and I had to manually stop the vehicle to prevent blowing the sign. It turns out that Tesla sent an email 2 days ago (April 7 2026) that notified me that fsd had been cancelled because my credit card was declined (I had to replace a card on April 7 due to a lost card). I did not see this email. There was no notification in the vehicle that fsd had been deactivated. When I thought I was engaging fsd, I was in fact engaging an autosteer mode with much lesser capabilities, essentially only acting like adaptive cruise control and lane guidance. Engaging this lesser mode is done in exactly the same fashion as fsd, and any driver using it in my situation would always assume fsd was active. This problem, if not corrected will absolutely cause accidents and potentially fatalities. Tesla needs to inform the driver via the head unit that fsd is not active in an obvious, unmistakeable way.

Running full service driving (fsd) v14. 2. 2. 5 on hw4. At skillman st & I-635 dallas TX, fsd attempted a wrong way turn into oncoming traffic instead of taking the correct leftmost lane. In the image attached instead of following the blue path Tesla took the wrong lane highlighted in red.

Driving using autosteer feature at 65mph on expressway, attempted to change lanes which caused the cruise control to suddenly turn off causing the car to begin braking hard with traffic behind it. Tesla’s new Model Y has combined the lane keeping and cruise control so if the lane keeping turns off the car suddenly brakes hard from the regenitive brakes. Lane keeping and cruise control should be two separate controls to prevent this issue.

Following a 25-day repair at a certified collision center due to an earlier accident, the vehicle's full self-driving (fsd) and active safety systems began failing. The vehicle repeatedly failed to keep speed and failed to stay centered in the lane. On March 25, 2026, while traveling at low speed on a public roadway with fsd actively engaged, the system failed to maintain a stable path and incorrectly steered the vehicle into a curb, causing property damage to the wheel. This failure put my safety and the safety of surrounding traffic at risk by executing an unpredictable steering maneuver that the active safety systems failed to prevent. The vehicle was taken to the manufacturer's service center twice with this specific complaint prior to the curb strike. The service center investigated and officially concluded that this was not a software issue, stating that they could do nothing else. They deferred the resolution back to the collision shop, citing likely camera/sensor physical misalignment from the 25-day body repair. The collision shop is now refusing to review the vehicle or inspect the hardware, claiming lack of visible exterior damage despite the internal service team stating this is a latent hardware alignment defect. The vehicle is currently in the same failing condition and available for inspection upon request. No warning lamps or error messages appeared on the screen prior to the failure or the curb strike. The symptom of unpredictable lane tracking first appeared immediately upon receiving the vehicle back from the collision repair earlier this year. Note: I have a formal data privacy request pending with Tesla to pull the exact chat logs showing their refusal to service this hardware defect. I will provide these to the investigator upon follow-up.