Vehicle Speed Control Problems of Tesla Model Y - part 1

When using the adaptive cruise control or “autopilot” feature on my Model Y, the vehicle will brake extremely hard without warning. This sudden, unnecessary braking is commonly referred to as phantom braking. The failure is available for inspection upon request. This malfunction poses a significant safety risk to myself and others, especially vehicles following behind, as it could lead to rear-end collisions. The issue is widespread, with many other drivers experiencing the same problem. The problem is easily reproducible on highways, particularly at certain intersections where no obstacle is present. The system will sometimes display a “curvature assist” prompt despite the road being straight, causing the vehicle to brake abruptly. I have not taken the vehicle to a dealer because the warranty has expired. The issue has not been confirmed by a dealer or independent service center, nor has it been inspected by the manufacturer, police, or insurance representatives. However, I reported it directly to Tesla and have received no response. No warning lamps or error messages appear before the failure, aside from the inaccurate “curvature assist” prompt. Cause: unknown.

See all problems of the 2023 Tesla Model Y 🔎.

The curvature assist function activates and applies the brakes automatically on straight and level sections of freeways with no observable obstacles or curves, requiring driver to resume acceleration to override the brakes.

After installing the most recent Tesla software update, my vehicle immediately displayed multiple alerts: traction control disabled, stability control disabled, and reduced steering assist. Cameras were disabled, navigation was disabled and my vehicle location was wrong. The vehicle lost core safety systems that are critical to safe driving the car functioned normally before the update. Immediately afterward, these safety systems were disabled. Tesla service has since diagnosed and confirmed, they state “an internal short within the drive assistance module (computer). The internal short is causing excessive current draw, resulting in loss of driver assistance features. The latest software has revealed the underlying root issue within the car computer. ” this indicates that the vehicle was operating with a latent defect that Tesla’s diagnostic update exposed. The update did not cause wear-and-tear failure; it surfaced a hidden safety defect inside Tesla’s own hardware. Why this is a safety concern loss of traction control, stability control, and steering assist creates a significant risk of loss of vehicle control. If this had occurred while driving at speed, the sudden loss of these systems could have led to an accident. Attempting a reboot while driving (Tesla’s standard troubleshooting suggestion) would have created further distraction and risk. Luckily when the car catastrophically failed and was unable to turn, I was in my driveway and not on a highway or any other roads.

See all problems of the 2022 Tesla Model Y 🔎.

Driving on I 880 south on the fast lane. The car suddenly braked for no reason and began to shutdown. It warned me to pull over before complete shutdown. Luckily there was space on my left and I was able to rolling stop. Nothing on the screen was working. Turned on hazard light. Got out of car with my phone. Accessed Tesla app and ran battery check. After couple mins the error went away. Tried to slowly move with hazard light on. It appeared to have fixed itself. Slowly merged back into freeway when it was safe. Attached notification when I tried to schedule service request.

While driving along a few roads using traffic aware cruise control (tacc) or autopilot (ap), the car will suddenly brake for no reason at all. Speeds reduced from 75 to 50 in 2 seconds. Had there been a car close behind me, we may have collided. I am able to reproduce this on several other roads as well. I have not yet reported this to the manufacturer, but a review of internet forums shows this to be a relatively common occurrence among owners. They refer to this as phantom braking.

Tesla's fsd functions slowly has been reduced in the last years. Firts Tesla disabled the double pull function, resulted taken away the standard cruise control function. Lately, the fully paid ($12000) fsd is not recognizing streetsigns anymore, which worked perfectly before. This function is crucial to manage speeds, lanes, pedestrians and school zones or just attend in public roads! Tesla service center refuses to fix this issue or offer any additional solutions! this is very concerning and those vehicles with full fsd are not safe to operate on public roads anymore! thank you.

Unknown I was driving with no advanced driver assistance systems (adas). My vehicle took control of the steering wheel, swerving uncontrollably, almost hitting approaching cars, and a wooden electricity post. It was diffucult to keep the steering wheel steady. I struggled to pull the vehicle to the side of the road until I made a complete stop. A witness checked on me and was concerned that I had almost crashed.

I have had supervised full self driving in the vehicle for well over a year. I have used the Smart parking feature Monday-Thursday to park the vehicle at work and it has worked flawlessly. On [xxx] around [xxx], I went to [xxx] . After entering the gate to parking on [xxx], I drove slowly. I was able to select a parking spot and tapped on it on the screen for the selection and then started the automatic parking. There were no other cars around as we were all just starting to enter the gate and park. The car began to move in reverse. It then paused turned the wheel a bit, turned it back, tried to decide what it was going to do and started to move forward. The car then drove up the curb on to the walkway and almost drove into the building. I was able to hit the brake quickly to stop the process. There was no damage to the building or the car. I had never had an issue with the Smart parking until this time. I then backed the car off the sidewalk and parked it myself. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Both my wife and I accidentally used the right side stalk to signal for a turn. Our mistake, except the car responded by suddenly accelerating. Fortunately we were both able to put on the brake. In the wrong situation this could be very dangerous.

On Tuesday, [xxx], around [xxx] returning home and in my driveway when the following happened. Pulling into the left side of the driveway because a utility van was parked on the right side of the driveway with the rear door and driver’s side door opened with no one in the vicinity. There was not enough room to go forward into the garage. I was almost at a complete stop with the intention of getting out of the car to shut the drivers side door. That was when the car sped up at full speed and turned to the right into the van and continued in the right direction into the garage. The car was headed to the right back corner of the garage smashing into paint cans, a freezer, sink and cabinets. I had no control over the car from the time the car sped up and smashed into the back of the garage and it all happened in a matter of a few seconds. The vehicle has been totaled by the insurance company. This incident was recorded in the vehicle’s computer. The police department was called the same day and a police officer came to the house to record the incident. The car was towed to gerber collision & glass, 10491 corkscrew commons dr. , estero, FL 33928, phone (239) 947-6050. The car computer system should have recorded the event. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2020 Tesla Model Y 🔎.

The adaptive cruse control would stop working off an on. Also it would give false land departure warnings causing driver to swerve thinking they were going to run into another care.

See all problems of the 2021 Tesla Model Y 🔎.

Vehicle hood latch censor . Around Feb 25 2025 my car was parked in parking lot when I shift to d it showes hood latch need service I towed the car to service center . They replaced the censor by saying its a old bad censor . Now again my car parked in garage March 17 the same hood latch censor error . And it wont let you drive more than 15 mph . Even the hood is locked . If you check kn social media alot of people faced the same issue.

See all problems of the 2024 Tesla Model Y 🔎.

While driving at approximately 25 mph on a local street in seattle, wa, my Tesla suddenly engaged the brakes without any apparent reason. The vehicle was not in autopilot or full self-driving mode, and my foot was actively pressing the accelerator pedal at the time. The braking was abrupt and forceful, causing a sudden deceleration. The weather was clear with good lighting. There were no obstacles, vehicles, or road hazards in my path that could have triggered the braking. The unexpected stop was shocking and could have led to a rear-end collision, as there were vehicles behind me.

See attached document for complaint.

Tesla remotely disabled my vehicle twice (February 28, 2025, and March 6, 2025) without prior notice, legal justification, or a court order. February 28, 2025 – Tesla disabled my vehicle for 3 days my Tesla Model Y was remotely locked without warning, leaving me stranded and unable to use my vehicle. Tesla refused to provide a reason or reinstate access for three days. March 6, 2025 – Tesla disabled my vehicle again & attempted repossession Tesla again remotely disabled my vehicle, then sent a tow truck for repossession without legal notice. I called the police, who confirmed Tesla had no legal repossession order. Tesla refused to restore access, forcing me into a coerced “voluntary surrender. ” how this posed a safety risk I was stranded in public locations without notice or transportation alternatives. Had the vehicle been in motion, this could have caused a road hazard. Tesla’s lack of due process denied me the chance to dispute the action before losing my vehicle. Confirmed by law enforcement & Tesla’s own records police intervened on March 6, 2025, and confirmed Tesla had no valid repossession order. Tesla has refused to provide written documentation or a legal explanation for these actions. Regulatory concerns Tesla’s unilateral ability to disable vehicles raises serious consumer safety issues: what prevents Tesla from disabling vehicles arbitrarily? what legal safeguards exist to protect owners from unjustified manufacturer lockouts? should federal law restrict Tesla from disabling vehicles without court approval? request for investigation Tesla’s remote disabling practice endangers consumers and should be urgently investigated by NHTSA to determine if federal safeguards are needed.

The contact owns a 2024 Tesla Model Y. The contact stated while parking the vehicle in front of the garage at the residence, the contact removed her foot from the accelerator pedal and the vehicle accelerated independently and crashed into the garage door. The contact stated that the garage door was damaged. The contact called the insurance company to report the failure and emailed pictures of the crash. No warning light was illuminated. A dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The manufacturer referred the contact to the NHTSA hotline to report the failure. The approximate failure mileage was 13,133.

This is my 4th safety report about the same issue: unexpected braking while on cruise control. Since my last report, Tesla offered another free month of auto pilot but I did not take it for fear of this braking issue. On Tuesday [xxx] I was returning to my home in las cruces nm from colorado. I was on [xxx] toward albuquerque, and there was very little traffic. I decided to see if I could get away with the cruise control. As I was pulling into bernalillo, there were some oncoming cars in a left-turn lane at a signal, and my car braked automatically. . . Enough to lurch me forward. I decided to stop at the "new" Tesla dealer in bernalillo (I got my car in santa fe) and ask about the automatic breaking and whether they'd fixed it. The 2 service employees looked at each other and one said "no". I then asked about whether I needed to re-boot my key card since my screen went blank while I was in CO, during a snow storm, parked. I luckily had my phone and on the Tesla app, under roadside service, it gave me the option to re-boot the screen! I did so. The serviceman said he didn't think the blank screen had anything to do with my key card, but I could re-boot it if I want to. (a prior complaint also reported the failed key card in less than a year and Tesla's unwillingness to replace it). Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Several times on residential speed control the system does not recognize yellow flashing school speed reduction signs. Never slows or breaks. The speed of 25 mph does not register on the screed (other speed signs do). I told Tesla service center when other services were being done. They said they were aware. I have seen no improvement over the last several months.

The contact called concerning the owner of a 2024 Tesla Model Y. The contact stated while idle at a red light in her vehicle, the 2024 Tesla Model Y rear-ended her vehicle. When speaking with the owner of the vehicle it was informed that the Tesla was on autopilot causing the crash. The owner stated that they could not feel when the impact occurred. No air bags deployed. The contact's vehicle was damaged near the license. The contact stated she sustained a soar neck but medical attention was not sought. The owner of the Tesla did not sustain any injuries that were known. A police report was not filed. The contact was unsure if the dealer was contacted or if the vehicle was repaired. The contact was unsure if the manufacturer was informed. The failure mileage was unknown.

I was trying to reverse the car from my garage. I turned on the engine and put the vehicle in reverse gear. The vehicle just zoomed out of the driveway leaving me without the ability to control it and hit a tree on a neighbor's house and stopped. Then I tried to bring the car into the garage by engaging the drive gear. Again, the vehicle zoomed into the garage, hit a few objects in the garage and stopped. At that point I just turned off power and walked out. I took pictures of the damaged parts. At that time, I only noticed damage to the rear on the driver side and the front on the driver side. When a tow-truck came a couple of days later, I noticed damage on the front on the passenger side also. When the incident happened , the street was empty and luckily no one (including me) was hurt n.

On drives longer than 40 miles, camera faults cause cruise control systems to degrade in function and then when the faults are cleared, full functionality resumes without driver alerts. Side repeater camera feeds and rear camera feeds inconsistently load, or take an extended time period to load (10+ seconds). Tesla has confirmed that the autopilot computer (hw3) likely needs to be replaced, but this error/messaging is not directly accessible to the customer. The inconsistent failure behavior of the vehicle could easily lead less technical owners/drivers to incorrectly interpret how the car is behaving. The only message you receive while driving could be that 'cruise control is not available', and 'automatic emergency braking unavailable' with a message that the features may be restored later in the drive. My coworker has a 2022 Model Y and the same component failed on his vehicle and needed to be replaced under an extended warranty that was purchased from Tesla. I'm unsure how widespread the failure of this critical safety system is; we both purchased fsd and both had the same component fail and need replaced. I don't personally know others who own this vehicle with the fsd package to know for sure.

While using cruise control (tacc) or fsd, the vehicle inadvertently brakes until vehicle stops, due to detecting light glare or other things as a collision threat. This happened many times. Reported to Tesla service, they said it is a bug and I should file a bug report. I have previously filed many bug reports about this but no software update fixed the problem. Incident happened many times, Tesla should have records of all, because when there is a disengagement, driver is asked to tell what happened by voice.

Around Dec 16 all cameras in my 2024 Model Y Tesla stopped working and it has not worked since that date. This affects many systems, the most important of which is that I now have no rear backup camera. I believe vehicle manufacturers are required to have functioning back up cameras. I notified Tesla service on 12/16 and was told there was a known computer hardware problem which would cause my incident. Tesla service told me they were unable to obtain the needed computer replacement for a month at least. They informed me there was no safety risk, but I disagree since I don’t have a functioning back up camera, nor lane change camera assistance. Also the display panel is very dark and impossible to read most of the time, posing another safety concern. Why has Tesla not issued a public statement about this problem, and why has NHTSA not mandated a formal recall?.

Vehicle information: • make: Tesla • model: Model Y • year: 2024 description of the problem: after a software update pushed by Tesla, the ap4 computer in my 2024 Tesla Model Y shorted out, causing a complete failure of all systems controlled by this computer. The following safety-critical and driver-assist features have become non-functional: 1. Cruise control (adaptive or otherwise) 2. Forward collision warning 3. Lane departure warning 4. Lane keeping assistance 5. Blind spot warning 6. Parking collision warning 7. Full self-driving and auto park features 8. Cameras required for autopilot functionality additionally, because the gps system has failed, the vehicle's navigation system is inoperable. This impacts Tesla's unique route planning feature that sets up supercharger stops during long journeys. Without a functioning navigation system, I cannot properly plan my travel or locate charging stations, which severely affects the usability of the vehicle. Safety concerns: the failure of these systems, especially safety features like forward collision warning, lane keeping assistance, and blind spot monitoring, puts both the driver and others on the road at risk. Losing access to safety-critical functions after an update is unacceptable and poses a serious danger to vehicle occupants and surrounding traffic. Incident details: • the issue occurred immediately following a software update. • Tesla pushed the update remotely without providing any warning or indication of potential risks. • the failure appears to be related to a hardware short in the ap4 computer, directly caused or exacerbated by the update. Desired outcome: • a thorough investigation into Tesla's software update process and its effect on vehicle hardware and safety systems. • a resolution that prevents similar failures in other vehicles and ensures system updates do not compromise vehicle safety or critical functionality.

After a recent software update - all cameras/sensors/cruise control/adas systems are no longer functioning.

Vehicle information: •make: Tesla •model: Model Y •year: 2024 description of the problem: after a software update pushed by Tesla, the ap4 computer in my 2024 Tesla Model Y shorted out, causing a complete failure of all systems controlled by this computer. The following safety-critical and driver-assist features have become non-functional: 1. Cruise control (adaptive or otherwise) 2. Forward collision warning 3. Lane departure warning 4. Lane keeping assistance 5. Blind spot warning 6. Parking collision warning 7. Full self-driving and auto park features 8. Cameras required for autopilot functionality additionally, because the gps system has failed, the vehicle’s navigation system is inoperable. The gps stays in the last position prior to the update. This impacts Tesla’s unique route planning feature that sets up supercharger stops during long journeys. Without a functioning navigation system, I cannot properly plan my travel or locate charging stations, which severely affects the usability of the vehicle. Safety concerns: the failure of these systems, especially safety features like forward collision warning, lane keeping assistance, and blind spot monitoring, puts both the driver and others on the road at risk. Losing access to safety-critical functions after an update is unacceptable and poses a serious danger to vehicle occupants and surrounding traffic. Incident details: •the issue occurred immediately following a software update. •Tesla pushed the update remotely without providing any warning or indication of potential risks. •the failure appears to be related to a hardware short in the ap4 computer, directly caused or exacerbated by the update. Desired outcome: •a thorough investigation into Tesla’s software update process and its effect on vehicle hardware and safety systems. •a resolution that prevents similar failures in other vehicles and ensures system updates do not compromise vehicle safety or critical functionality.

Starting on 12/4/2024, my car's camera stopped working, no blind spot warning, no navigation, no rear view camera and no cruise control. Reported to Tesla on 12/8 and they said it is a known problem nationwide and some autopilot computers are getting shut or something. They have given me an appointment for 1/4/2025. The vehicle is really unsafe to drive without these components working and the vehicle draws on heavy amount of battery usage without these controls and for my commute on highway, I am always nervous about if there is going to be enough for me to reach the next charging station. I would expect this falls into safety recall and Tesla should at least send out a service bulletin as well as provide alternate vehicles for the owners to use until this can be fixed.

Tesla has told me the ap4 computer has failed in my car which has resulted in them having to replace it. I had this issue start right around thanksgiving. I scheduled the soonest appointment available for 01/03. Not offering me a rental or anything on my brand new '24 Tesla. It has just over 1,000 miles on it and is ~1 months old now. This issue impacts: emergency braking, blind spot detection, lane keep/centering, assisting with parking, automatic high beams and wipers, cruise control/ adaptive cruise control, back camera, vehicles built in gps to be stuck at one location every time, has made my touchscreen not automatically brighten or dim, my auto dimming mirrors be too dim in most driving conditions, constantly fail to install system improvements and safety updates, and because my vehicle keeps trying to do this, it has caused increased battery drain as well. This has increased the safety risk of my vehicle tremendously. . . Tesla has not seemed to publicly acknowledge the issue yet either.

Harsh braking while using cruise control. Known as "phantom braking". This is causing extremely dangerous situations. The vehicle slams on the brakes while at high speeds for no apparent reason. Perfect weather and road identification markers. Happens with oncoming vehicles in normal path of travel as well as when there is a break in painted lines on the roadway. This creates a serious potential for an accident injury or death. Happens consistently.

2025 Tesla Model Y cameras and sensors all stopped working within 700 miles driven from brand new. Affected systems included all cameras, including backup camera, as well as gps navigation, with the gps system believing the vehicle to be static at a Tesla facility in California. This not only prevented the self-driving and navigation from functioning, it caused numerous safety features to be disabled including (mandatory) backup cameras, collision-avoidance system, lane-departure warning system, cross-traffic alert system, rear collision avoidance system, and automatic safety braking. Upon reporting to Tesla, was told a "new component" was required, which later was told was a new computer. The manufacturer initially set a date 2 weeks in the future for a repair; then they pushed it a month; then tried to push it another month before I pushed back. This resulted in it being taken in earlier than the repair date. The vehicle is still awaiting repair. There were no warnings of this failure, it simply all happened at once. Upon confronting Tesla service with this being a known issue [xxx] ) and requesting a loaner for the meantime, they eventually found one, but only after great protestation and pushback, with eventual threats of legal action leading to a more personal touch. This is clearly a known issue which they are downplaying. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

All of the car's cameras have gone dead since November 2024. The car has been collecting water in the truck area and inside panel of the car by the door frame.

#issue description I experienced an issue with Tesla’s full self-driving (fsd) system when a trailer hitch was attached to my vehicle. From what I observed, the fsd system appeared to detect the trailer hitch as an object in close proximity to the vehicle. This caused the vehicle to accelerate rapidly to the fsd maximum speed of 85 mph, regardless of the road conditions or posted speed limits. This issue occurred when the lane markings were visible, but the hitch obstructed the rear camera’s view. On the fsd display, this obstruction was represented as a persistent “cloud” following the vehicle. I attempted to adjust the maximum speed limit manually to mitigate the acceleration, but this did not prevent the behavior. Each time I engaged fsd, the car would accelerate rapidly, even in situations where such high speeds were not appropriate for the road conditions. # steps taken to resolve the issue I covered the rear camera, which allowed fsd to function normally and prevented the rapid acceleration. The “cloud” visualization on the fsd display also disappeared once the camera was covered. # trailer mode Tesla offers a “trailer mode,” but I did not enable it since I was only using a hitch without towing a trailer. My understanding is that fsd does not operate in trailer mode. # reference: this issue has been reported by other Tesla owners, as discussed here: [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I own a 2020 Tesla y with hardware version 3 and after a few weeks of a free trial, purchased Tesla's full self-driving software (fsd) version 12. 3. 6. Since then, the fsd software was updated to version 12. 5. 4 and then 12. 5. 4. 1. Fsd version 12. 3. 6 had some safety issues. But version 12. 5. 4 and 12. 5. 4. 1 has had more issues that have resulted in nearly having accidents that I have had to suddenly avoid. Fsd version 12. 3. 6 issues: 1. Wandering outside of center yellow dividing stripes when on a curvy two-lane roadway 2. Failing to yield to oncoming traffic when making a left turn and oncoming traffic was not clearly in view due to a curvy two-lane road 3. Attempting to make a left turn into a busy intersection when the turn signal was still red fsd version 12. 5. 4 and 12. 5. 4. 1 additional issues: 1. Attempting to enter a two-lane roadway from a stop sign, when the perpendicular traffic was active and they had no stop sign, requiring me to slam on the brakes. 2. Sudden and erratic braking on a two-lane roadway, including directly under a signal, when no objects, people or other vehicles were in front of me, which nearly resulted in the vehicle behind me hitting me in the rear 3. Software sending a tone and screen alert to grab the steering wheel immediately, due to a "system failure. " 4. Software sending a tone and screen alert that to grab the steering wheel immediately, due to "one or more cameras blocked," when no cameras were blocked.

I was in a parking lot on [xxx] in mamaroneck, new york waiting in line to get out at approximately [xxx]. Many cars were ahead of me due to the school drop-off rush, with parents and kids lined up in the parking lot waiting to leave. While I was waiting, the Tesla unexpectedly accelerated on its own, but I managed to hit the brakes just in time to avoid colliding with the car in front of me. A few seconds later, my car suddenly accelerated again without any input from me. I tried to steer away from the cars in front while repeatedly pressing the brakes, but they weren’t working. All I could think about was avoiding hitting another car or person, so I swerved the car toward the building in the parking lot. The impact was hard, and the car finally stopped, but the airbags didn’t deploy. I’m deeply shaken by the incident; I could have seriously injured someone or even worse. When I got home, I discovered that this issue is a known problem with Tesla, yet they’re placing the blame on drivers. Having never been in a car accident before, this experience has been overwhelming. As a mother and attorney, I believe it’s crucial to examine this situation more closely. Tesla controls the data, and it’s clear that responsible drivers wouldn’t suddenly veer into a building in a crowded parking lot without cause. I urge you to act on this life threatening defective car and investigate this problem before it is too late. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My Tesla still has the phantom braking problem. It is repeatable and consistent. I can tell when it will occur on a route that I drive regularly. Day or night does not seem to alter the occurrence. There is no indication on the touch screen when this occurs. Traffic volume does not matter. It always occurs at the same places so it should be relatively easy to fix if someone would just monitor my computer when it occurs. I regard this as a dangerous problem on the freeway because my car suddenly slows and if the person behind me is not paying attention, I am going to be rear ended. Such a serious fault for a vehicle that performs so well otherwise. Since Tesla does not have a service center in my town no one has offered to look at the problem but since it has been reported so often, I'm not sure they would. I would be happy to demonstrate the problem to a technical person who might be able to diagnose it.