Adaptive Cruise Control Problems of Tesla Model 3 - part 2

On [xxx] at approximately [xxx], I was driving northbound on [xxx] in phoenix, arizona in my 2025 Tesla Model 3 using Tesla's full self driving (fsd) (supervised) mode, when the incident occurred. I was paying close attention while driving in the left-most, non-hov lane coming up to a bend just before the [xxx] overpass, when I noticed traffic ahead slowing down and coming to a stop. I monitored fsd as it went through the act of braking; however, it seemed to wait a little longer than I would have expected before it actually started to brake, and when it did, the fsd system had to brake more aggressively than I've previously experienced. As it neared the end of the braking event (while the car was still moving), the fsd system disengaged itself without any input from me (neither by manually applying the brake pedal, applying torque to the steering wheel, or pressing the fsd button). When the fsd system disengaged itself, my vehicle continued forward. Had I not been paying attention, my vehicle would have collided with the rear end of the vehicle in front of me. Since I was paying close attention, I immediately slammed on the brakes after noticing that fsd had disengaged itself. I have dashcam footage of this event from the Teslacam system; however, it does not include audio or telemetry data. Even without that, you can see in the video that my car noses down while fsd applies the brakes, then noses up when fsd disengages itself, and then noses down again when I apply the brakes manually. (the dashcam footage exceeds the 20mb limit; however, I can provide it via other means upon request. ) it should be noted that I am an experienced Tesla fsd user, as I used it for over a year in my prior vehicle (2018 Tesla Model 3, which had been upgraded with the hw3 fsd computer), and this is the first time I have ever experienced a near collision event while using fsd or an event in which fsd disengaged on its own. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2025 Tesla Model 3 🔎.

Tesla Model 3 2025, fsd v13. 2. 9, red light violation: video enclosed: [xxx] it just happened and I have no more information can provide. Apparently fsd didn't warn me that it will run a red light. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Full self driving mode (with hardware 3) consistently will enter the carpool lane when I am driving solo. In the vehicle navigation settings, I have, "use carpool lanes," unselected. It doesn't seem to use this input in it's decision to enter the carpool lane. Sometimes it is very quick to signal and then enter the carpool lane illegally that I can't respond quick enough to correct. However, it only seems to need 1 correction for it to ignore the carpool lane for the remainder of the trip. This then can/will repeat each new trip (it doesn't always occur for each new trip, sometimes it won't make an attempt to get into the carpool lane). I have sent Tesla dozens of recorded messages that it needs to be fixed. It will enter at an illegal point, crossing the solid line, this can sometimes be a dangerous maneuver as well as being illegal for a solo occupant. Also, I don't want to want to be ticketed. It's quite a stressful situation each time this occurs.

See all problems of the 2020 Tesla Model 3 🔎.

Full self drive 14. 1 removes the max speed setting that allows drivers to control the speed of the vehicle while under computer control, leaving no way to prevent the car from speeding when the speed profiles choose to drive over 28+ mph over the speed limit. The lack of ability to control the speed of the system is fundamentally unsafe by design.

See all problems of the 2024 Tesla Model 3 🔎.

My family and I were in my Tesla Model 3 2022 and heading from charlotte to orlando on [xxx]. The car was in full self-drive (fsd) mode while commuting through daytona beach. The rain was heavy in the area. While driving in daytona beach, fsd caused the car to change lanes and go to a lane that had standing rain puddles on [xxx]. After fsd caused the lane change, the car immediately hydroplaned out of control. The car's short clearance from it's bottom and the ground which traps water that exacerbates hydroplaning, along with its generative breaking feature made matters worse and uncontrollable. The car spun into the median three times and settled in the middle of danger interstate. The car is totalled. My family and I require medical attention and counseling due to the trauma. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2022 Tesla Model 3 🔎.

Repeatedly and randomly, with cruise control (not fsd) engaged, the car would brake, sometimes aggressively. The last time, it braked so hard the tires or brakes squealed and the car swerved slightly before I was able to regain control. This was on the freeway (in colorado, if I remember correctly) while I was cruising at 70 or 75 mph. I decided that that was the last time I would use cruise control; it was just not safe. I had an appointment on October 22 to take the car in for service. But then a friend told me this was called "phantom braking" and that there was no fix. A friend suggested that I contact the NHTSA.

See all problems of the 2018 Tesla Model 3 🔎.

A recent update has caused the vehicle to no longer acknowledge an important speed sign. This was confirmed by another Tesla, it is due to an update. This is unsafe and is capable of allowing the vehicle to travel through town at 75 mph where pedestrians cross the highway. If the camera gets blinded at the wrong time then it will not see people or vehicles as it plows into them. I made Tesla service aware and tried to submit a bug report but Tesla app simply says they are aware that the camera may not always read the signs. However, this was never an issue until a recent update. When are you going to make them liable?.

I love my vehicle and its technology. However after installation of the latest (fsd v14) update, I observed issues I believe pose a risk to the safe operation of the vehicle. I have made dozens of reports for 30+ days to Tesla for these issues. 1. Driving profiles and speed the update features multiple driving profiles (e. G. , "sloth", "chill", "standard", and mad max). Only the "sloth" profile drives at the “speed limit” (what their outdated map thinks speed limit is). All other profiles drive over the posted speed limit (sometimes significantly). The ability to manually adjust the speed limit setting has been removed or disabled in these profiles. Once the vehicle is in a profile, the system stays in its own selected speed. This behavior prevents the driver from easily controlling the maximum speed when using the system, undermining driver-intent. 2. Incorrect or outdated speed limit data the vehicle frequently displays incorrect speed limits: for example, school zones, reduced speed zones, temporary speed changes, work zones, and even a busy high way I drive everyday that’s been changed for 3 months now, are often not recognized or updated in the system. On several occasions over the past months, the system continued to use an outdated or incorrect posted speed, despite the road clearly being a lower limit. Because the system uses the erroneous speed data as the basis for its automated driving decision (and without manual override of speed in fsd), this situation increases risk-especially in areas where lower speed limits are enforced for safety (pedestrian zones, near schools). 3. Safety risk description the lack of manual speed adjustment under autonomous mode means the driver has less control over vehicle speed when using fsd, reducing the driver's ability to mitigate risk in a dynamic environment. I’m asking for Tesla to either make sure they have constant real time speed limit data, or allow again for manual speed adjusts when in fsd.

Recently I had three back to back near miss head on collisions on highway early morning still dark. These three along with a previous near miss the vehicle had zero reaction to the imminent collision with roughly half a second to spare. It happened so fast that I must have let go of the record button as there was no saved video. I am working with lemon law firm and class action firm, get your crap together because these recent accidents reported in az are also your fault for not reacting appropriately to previous complaints.

Vehicle: 2019 Tesla Model 3 dual motor VIN: [xxx] mileage: ~84,041 software: v12 (2025. 32. 6 e575ed98d527), fsd supervised v12. 6. 4 date/time: [xxx], ~[xxx] location: [xxx] incident description: while operating autopilot, I was stopped at a stop sign preparing to turn right. I lightly pressed the accelerator to prompt the turn. At that moment, the vehicle would not respond to steering or braking input. Despite applying full force on the steering wheel and brake pedal, the car continued straight ahead and struck a street sign. This represents a loss of manual override — I was completely locked out of steering and braking. Prior behavior at same location: on prior occasions using autopilot at this same intersection, the vehicle would attempt to make the turn but then immediately steer itself into the breakdown lane. I had learned to expect this and was prepared to take over. However, in this most recent incident, the vehicle did not allow me to take over at all, which created a far more serious hazard. Result: •vehicle damage (front bumper, sensors) •significant safety risk if pedestrians or cross traffic had been present •demonstrates that autopilot can both mis-execute turns and, critically, fail to relinquish control when the driver intervenes action taken: •scheduled Tesla service (cherry hill, NJ – oct 7, 2025) •requested Tesla to preserve all telemetry, camera footage, and autopilot logs •reported to my insurance carrier as a suspected manufacturer defect request: I am reporting this as a serious safety defect. A system that prevents manual override of steering and braking is unsafe and could cause severe injury or death. Please investigate Tesla autopilot’s behavior at this location and in similar right-turn scenarios. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2019 Tesla Model 3 🔎.

While driving my Tesla equipped with autopilot/traffic-aware cruise control, I experienced an unexpected and abrupt braking event. A vehicle had entered the center turn lane and had already cleared my lane, posing no obstruction to my path. Despite this, my Tesla suddenly applied the brakes without warning, causing a rapid deceleration that could have led to a rear-end collision had another vehicle been following closely. There were no visible hazards, warning messages, or alerts prior to the braking. The incident occurred in clear daylight conditions on a dry road, and the vehicle in the center turn lane was stationary or turning away from my lane. This appears to be a case of phantom braking, possibly due to misclassification of the adjacent vehicle or overcautious object detection by the vehicle’s advanced driver assistance systems (adas). This issue has occurred more than once in similar scenarios, and I believe it poses a serious safety risk. I have not yet had the issue inspected by Tesla or a service center, but I am submitting this report to raise awareness and request investigation into the reliability of Tesla’s braking logic in these situations.

See all problems of the 2023 Tesla Model 3 🔎.

Tesla’s full self driving did not react to emergency vehicles approaching from behind. . Vehicle was a police cruiser emergency lights, and sirens were active on freeway.

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. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Main incident: time: 2025-08-28 ~12:41 pm pst what happened: after searching for a parking space, the driver was preparing to reverse into the spot, the driver pressed up the stalk to shift the gear into reverse, a sound was heard and something showed up on the screen, the vehicle once again started accelerating and running forward suddenly and sharply (3 mph to 28 mph in 3 secs), driver tried to steer the vehicle away from cars and buildings to minimize danger, the car rushed onto a concrete curb, hit one blue Tesla, then hit the side of a concrete utility pole, and ran over a plant and last crashed into the chain-link french before it finally stops injuries: * spine pain for one passenger damages: ** all tires blown out, tire falls off ** severe damages throughout the vehicle body * one Tesla parked on the parking lot was severely damaged * the utility pole's base box was scraped and deformed * one plant was knocked down similar case 3 few mins ago: time: 2025-08-28 ~12:38 pm pst what happened: the driver entered a oneway parking lot, but found no available spot and was trying to back up, the vehicle suddenly accelerated on its own. The driver performed an emergency brake and stopped the vehicle. At the time the vehicle stopped, it was only about 20 inches away from two cars in front of it injuries and damages: none what component or system failed or malfunctioned, and is it available for inspection upon request? malfunctioning of the electronic control or braking system leading to abnormal acceleration conflicting gear shifting and autopilot engagement design the right stalk is used to both shift gears and engage autopilot features, this design makes it very easy for the system to confuse the two actions autopilot feature safety issues autopilot features (whether its fsd or cruise control) should not be allowed to initiate abrupt acceleration to a dangerous speed in a low speed area (for example parking lot) insurance claim filed, number: 25-647243342.

I want to add an update to my previous report # 11690629. I think it would be helpful to provide what the max speed should be based on my input. So, I will just resubmit the previous report with some additional information. On December 31, 2024, I purchased a new Tesla Model 3 long range with full self-driving (fsd). The problem is the car goes faster than it should when full self-driving is activated. I have attached an example photo of the Tesla screen taken while the car is being controlled by fsd. It shows the actual speed limit of the road is 35 mph, and the car is traveling at a steady speed of 51 mph. It also shows a “max speed” of 64 mph which means the car may travel that fast on this road if it chooses to. Since I use an offset of 10%, the max speed in this 35 zone should be 39 mph. However, the car increased it to 64 mph, and I certainly did not use the right scroll wheel to increase it. This is clearly a safety issue which can lead to accidents. Tesla has made 5 attempts to fix this without success. On the last attempt (September 24, 2025), they refused to answer my questions such why does the max speed suddenly change to a value much higher than my specification? they simply stated that the system was operating as designed. Really? it’s design to drive 51 mph in a 35 mph zone? furthermore, they went on to say I should disengage the fsd system or intervene manually if I believe the car is operating in an unsafe manner. One reason I purchased this car was for fsd. I would expect them to fix it rather than my having to abandon this feature that I pay for. I hope you will encourage Tesla to fix this issue before there are any more fsd-related accidents.

On December 31, 2024, I purchased a new Tesla Model 3 long range with full self-driving (fsd). The problem is the car goes faster than it should when full self-driving is activated. I have attached an example photo of the Tesla screen taken while the car is being controlled by fsd. It shows that the speed limit of the road is 35 mph, and the car is traveling at a steady speed of 51 mph. It also shows a “max speed” of 64 mph which means the car may travel that fast on this road if it chooses to. This is clearly a safety issue which can lead to accidents. Tesla has made 5 attempts to fix this without success. On the last attempt (September 24, 2025), they refused to answer my questions such why does the max speed suddenly change to a value much higher than my specification? they simply stated that the system was operating as designed. Really? it’s design to drive 51 mph in a 35 mph zone? furthermore, they went on to say I should disengage the fsd system or intervene manually if I believe the car is operating in an unsafe manner. One reason I purchased this car was for fsd. I would expect them to fix it rather than my having to abandon this feature that I pay for. I hope you will encourage Tesla to fix this issue before there are any more fsd-related accidents.

Component/system involved: advanced driver assistance systems — fsd (supervised)/autosteer (lane keeping assistance) and adaptive cruise control. Possible failure to warn/stop (fcw/aeb). Vehicle and data are available for inspection upon request. I preserved dashcam files and requested Tesla to preserve engineering logs and edr. What happened & safety risk: on Aug 13, 2025 at ~9:30 am pdt on us-101 sb near east palo alto, CA, with fsd (supervised) engaged, the system appeared to misinterpret an exit ramp/gore area as a continuing lane at a highway fork and maintained ~60 mph (posted ~70). As soon as I saw the trajectory was unsafe, I braked and began manual steering takeover, but the vehicle contacted a roadside sign near the gore/shoulder before I could complete the maneuver. I then stopped safely. No other vehicles were struck. Airbags did not deploy. This posed a serious collision risk to me, my passenger, and nearby traffic. Reproduction/confirmation: not reproduced. I have not attempted to reproduce the event. Unknown whether the issue has been reproduced by Tesla or a service center yet. Inspection to date: police responded (report pending). My insurer has opened a claim. I opened a Tesla service request asking to preserve autopilot/fsd engineering logs for the incident window and to coordinate edr extraction; engineering review pending. Vehicle remains drivable. Warnings or symptoms before failure: no audible/visual forward-collision warning was perceived by me and I did not observe automatic emergency braking. No prior warning lamps/messages were noticed before the departure toward the gore. Unknown whether any internal/partial interventions were recorded in logs. . Read more...

See all problems of the 2021 Tesla Model 3 🔎.

Too fast and too close to stop sign to red light or other cars while in full self drive (supervised). I had to disable it to avoid risks of accident. Even using chilly mode.

Had acc set on 80 mph on the hiway yesterday. A vehicle was passing me and the Tesla suddenly applied heavy brake pressure to the point of tires screeching. Speed dropped very quickly to about 50 mph. I had not touched the brake pedal. Brakes released and speed resumed to 80 mph. Very scary and high risk of rear end collision. Lucky nobody was behind me. Don’t want to experience that again.

Autopilot (adaptive cruise control) will freak out and slam on the brakes when a motorcycle passes by splitting lanes. This is a serious safety issue as cars and motorcycles behind me may not be able to react in time and cause a rear end collision or into the wall or vehicles next to them. It is impossible to override the braking with the accelerator as it will be too late by the time the car accelerates. Flooring the accelerator is also not a safe option.

My Tesla Model 3 disengaged cruise control while going 68 mph and braked hard for no apparent reason. I was driving northbound on I-405 at 3:45 a. M. Going to lax airport in the number 3 or 4 of six or seven lanes. Cruise control had been activated for at least 10 minutes before the incident at a speed of 68 mph. There was no traffic within half a mile before or after me due to the time of day. Neither my left or right foot were near either the brake or acceleration pedal, nor were they in motion. Both hands were on the steering wheel and no control was being activated. The only noticeable environmental condition is that the road surface had just changed from a dark gray asphalt to a bright white new concrete roadway. No emergency braking alert was seen or heard, so I do not think it was a false collision detection, and there was no car within a half mile. However, I do believe the severity of braking could have caused an accident if there had been someone behind me. Tesla Model 3 software version was v12 (2025. 20. 6 046c4575d120).

While driving on autopilot the I-10w on Wednesday July 16, 2025, the car suddenly and very harshly braked for no reason at all. The vehicle in front of me was visible on the vehicle's display, meaning it was keeping it distance and was actively adapting to its speed and distance, and at no time did I press the brake or move the steering wheel for the vehicle to use its emergency braking. It was so harsh, I felt the blood throughout my head and body lunge forward, and autopilot immediately turned off. If I wasn't aware of this sudden braking, I would have assumed autopilot would still be active, but knowing of Tesla's "phantom braking", I immediately took control once I noticed autopilot turned off on its own. I have a video of the dash cam available (over 10mb) if needed.

Description of problem: while driving under normal highway conditions on July 2, 2025, my Tesla suddenly and violently phantom braked — meaning it rapidly and without cause applied the brakes forcefully. There were no obstacles, vehicles, or hazards present. The sudden deceleration caused a severe flare-up of a recent cervical disc replacement surgery I had undergone. I experienced extreme neck and spinal pain and had to seek emergency medical attention. I am now under medical supervision, on pain medication, and unable to work. I contacted Tesla requesting the logs from the incident and have received no response. I’m deeply concerned about the safety of this vehicle and the lack of accountability for this known and previously investigated issue. I am in the process of retaining legal counsel and intend to pursue this further as a product liability and injury case.

I am filing an urgent complaint regarding multiple incidents involving my 2024 Tesla Model 3 (VIN: [xxx] ) that caused major safety risks, personal property loss, and serious disruption to my life. [xxx] – while in a left-turn lane with autopilot engaged, the car attempted to go straight. When I took over, the system malfunctioned severely. (photo evidence available) [xxx] – remote support failed; car towed to Tesla upland service center. June 27, 2025 – issued loaner vehicle. July 1, 2025 – Tesla claimed I must pay for repairs. I requested a written evaluation report, but to date it has not been provided. July 20, 2025 – without consent, Tesla remotely locked my vehicle with my personal belongings inside, violating my property rights. Aug 1, 2025 – Tesla promised review and report but refused to unlock my car. Aug 12, 2025 – after 10+ days, still no report. Upland “options” included threats that my locked car in my garage could be deemed stolen, causing severe mental distress. Demands: 1. Full investigation into autopilot failure and handling delays. 2. Immediate delivery of written evaluation report. 3. Accountability for delays, threats, and property rights violations. 4. Compensation for all losses and disruptions caused. Contact: [xxx] I request a written response within 24 hours. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I was traveling northbound on [xxx} in sugar grove, IL with the traffic aware cruise control on. As I passed under [xxx] the car braked heavily for no reason. No cars in the area. . . Thankfully. I could have easily been rear-ended. It has done this on more than one occasion at this location. I filed a "bug-report" via the right hand button on the steering wheel. I was also traveling [xxx] near lasalle-peru with the cruise control on at about 80 mph when the vehicle suddenly braked heavily. No cars around at all. The moment was extremely frightening. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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.

My vehicle is equipped with supervised fsd and has had couple of issued on the intersection of [xxx] and [xxx] in portsmouth, virginia. It seems every time I stop at the light, the system recognizes the red light and stops, but shortly after it wants to keep advancing forward although the light is still red and has not changed. The vehicle has also had a problem staying on lane at light on the intersection of [xxx] and [xxx] in suffolk as it is getting ready to turn left prior to entering the entrance road to [xxx] . The image in the screen is correct and the lines are in place, but the vehicle has trouble staying with in the line and needed to be corrected. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I was traveling at highway speeds on a highway with no vehicles or other obstacles in front of me. I had adaptive cruise control on. Then, the emergency brakes deployed for no reason (so called “phantom braking”), decelerating the car quickly. I turned off adaptive cruise control as fast as I could and nothing bad happened. But the situation was dangerous, as if a car was close behind me it could have rear ended my vehicle.

For the last few weeks while driving, my car will automatically put itself into fsd with out me authorization. Mean I will we driving and the car will just put itself into fsd. This has happened about 15-20 times over the last 2-3 weeks. Tesla wants to clean the front camera? which makes no sense and charge me for it. If the front camera was obstructed, like in the case of fog. The car would alert me that it could not due to being obstructed, which isnt the case.

Phantom braking (as it's referred to by experts) happened to me twice on the highway using traffic-aware-cruise-control. Very scary. I was on cruise control going 60 mph when suddenly my car braked suddenly and inappropriately, losing at least 20 mph in a split second before I was able to slam on the accelerator and prevent an accident (rear-end collision). This happened twice in the course of 5 minutes on the same highway! there was no obstruction in the road, no cars moving into my lane, nothing but normal road conditions, when it occurred. From my research, this is a huge problem with Tesla vehicles that thousands of individuals are loudly complaining about online and now in court cases in the country. I see there are thousands of reports to your organization about this, but it says you have only complaints from 2021 and later years. However, I have a 2019 and it's happening to me. And it's happening to every single model year out there, just from researching and talking to Tesla owners. This is a major safety hazard, plain and simple. I was inches of being in a rear-end collision, and drivers behind me are extremely upset and vengeful on the road after an incident like this (understandably!). Because of this I fear for my safety and well-being on the road using Tesla's cruise control features. Very disappointing. Above for the adas option, I wasn't able to select 2 options, but "automatic emergency braking" is also applicable here as that is what happened. Somehow Teslas are falsely activating emergency braking during cruise control!.

I have a safety concern regarding Tesla's full self driving (fsd) supervised system. V13. 2. 8 being the latest customer version. Since the update to fsd v13 in December, I have consistently used it on a daily basis. While it performs great on city streets, it consistently caused a serious safety risk on the freeway: it habitually tailgates cars at high speeds of 70-80 mph on the freeway. It does this even when there is no traffic and the other lanes are wide open. I have experienced this on both a Model 3 (2025) and a model y (2024). I am writing this complaint here hoping you will pay attention to it, as despite my best efforts, Tesla has ignored my feedback. I even opened a service ticket about it at one point, and the service tech couldn't care less. Not maintaining proper distance to the cars in front on the freeway puts the passengers at high risk for a rear end collision. If Tesla is to launch an unsupervised version of their fsd system, this problem must be addressed first!.

Vehicle: 2024 Tesla Model 3 date of incident: [insert date] location: intersection of [xxx] operating mode: Tesla autopilot (engaged) on the above date, while driving with Tesla autopilot engaged, the vehicle initiated an unexpected and improper right turn at the intersection of [xxx] this maneuver was not indicated in the planned navigation route, nor was it consistent with the legal road markings or signage in the area. The vehicle turned into a clearly marked “do not enter” and “wrong way” zone, without any driver input or confirmation. I attempted to intervene, but the turn happened abruptly and could not be safely overridden in time. This resulted in a collision, vehicle damage, and physical trauma to both occupants — including nausea and vomiting in my wife immediately after impact. Dashcam footage from the right repeater camera confirms the presence of multiple “do not enter” signs visible at the point of the turn. We have requested the Tesla event data recorder (edr) logs to confirm that autopilot was active and that steering input came from the system, not the driver. I am reporting this as a serious safety concern related to Tesla’s autopilot system and its decision-making at intersections. If this had occurred in a busier traffic environment, the result could have been far worse. This type of navigational or perception failure should be investigated immediately. Both occupants are seeking medical treatment and continuing to deal with the emotional and physical aftereffects of this incident. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While driving from costco in fountain valley to best buy in costa mesa, I was using fsd for the entire route. Everything was running smoothly until we approached south coast drive near the I-405 interchange (costa mesa, CA). At that point, the fsd system incorrectly directed the vehicle to enter a freeway off-ramp, effectively driving into an I-405 freeway exit ramp in the wrong direction. This created a highly dangerous situation, as the ramp was intended for vehicles exiting the freeway, not entering. Fortunately, I was able to take over control of the vehicle and prevent a potential accident, but this was a very close call. Incident details •date: March 21, 2025 •time: between 2:00 – 3:00 pm •location: south coast dr near I-405 on/off-ramps (costa mesa, CA) •route: costco fountain valley ? best buy costa mesa •navigation mode: full self-driving (beta) enabled throughout •conditions: daylight, dry roads, moderate traffic what happened •fsd turned the car onto a road segment that functions as a freeway exit. •the vehicle entered the lane facing oncoming traffic exiting from I-405. •I immediately disengaged fsd and took manual control to correct the situation.

Multiple instances of phantom braking, car will suddenly slam on brakes without any indication of danger or anything to avoid. This has happened at least a dozen times and we are fearful that it will cause an accident. Vehicle will also alert lane departure and attempt to automatically adjust, turn to another lane while in the appropriate lane. Multiple incidents, at least 30 in 6 months of ownership. No collisions as of yet, concerned there could be.

Tesla has told me the ap4 computer has failed in my car which has resulted in them having to replace it. This issue impacts: emergency braking, blind spot detection, lane keep/centering, assisting with parking, automatic high beams and wipers, cruise control/ adaptive cruise control, 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.