2020 TESLA MODEL Y Forward Collision Avoidance Adaptive Cruise Control Problems

The full self-driving (FSD) stopped working although it was fully paid for at the time of vehicle purchase. Along with that, the car stopped receiving/installing over the air software updates, the lane markings in the display disappeared, and the automatic cancelling turn signals stopped working (requiring me to manually cancel them). I took it to Tesla service and was told that the car needs a new computer at a cost of approximately $2,300. To answer the bullet points above: 1. The main vehicle computer malfunctioned. 2. I paid for FSD for the safety it provides - without FSD, the car is simply less safe in traffic. 3. The Tesla service center confirmed that the vehicle computer has malfunctioned. 4. There was no indication of any kind, until suddenly the FSD stopped working and I noticed subsequently that downloading/installing software updates failed, lane markings disappeared, and automatic cancelling turn signals stopped...

My Advance Driving assist (FSD for Tesla) stop working randomly. Adaptive Cruse control stoped working, forward collision stopped working. Backup camera randomly disconnect when parking. All of this happened right after a software update. I have contacted Tesla several times. They quoted me $2,666.96 to address the issue. Isn't this a Safety feature of the Car Specially when I paid $10,000.00 extra when I purchase the car to have FSD? All of the advanced driving assistance and collision warning stopped working as well.

After installing Software version 2024.45.25.15 (Full Self Driving software 12.6.2) on my 2020 Tesla Model Y with Autopilot Hardware v3, I experienced unsafe behavior by the autopilot/automatic safety system. On my second drive after the software update, I was unable to engage the autopilot system. Two “Phantom” cars appeared on the full self driving visualization. One “phantom” vehicle was on the left side of the vehicle in my blind spot. A second “phantom” vehicle was shown about 20 feet ahead and 50 feet to the left of my vehicle. (See screen shots). When I attempted to turn left, the automatic lane keep and blind spot warnings took over and attempted to avoid the phantom vehicle. I was able to override the system, but it caused repeated alarms and attempts to move the vehicle back into the lane.

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...

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,...

On July 26 2023, FSD, camera and navigation were working fine untill i was told to update software in my car. Then the next day everything stop working. I could not use navigation, crusie control, FSD, and all cameras. So, I brought in service to check but they could not fix the issue and want to replace car computer which i have to pay for the issue i did not cause. This is unresponsible that i got it from them. I am not sure if this manufacter defect or firmware issue that cause it. But this is not something that i have ability to cause it. Now with this safey recall i could not update software since there is no option for to do so.

I am writing to formally file a complaint against Tesla, Inc. concerning a significant issue that has arisen following a software update issued to Model Y and Model 3 vehicles in early December. I am a Tesla Model Y owner, and following this update, I have experienced complete failure of critical vehicle systems including cameras, navigation, lane departure warnings, auto braking, forward collision warning, adaptive cruise control, windshield wipers, self-driving features, and car location data. The malfunction of these essential features not only compromises the safety and functionality of the vehicle but also indicates a severe underlying problem with the vehicle's computer system. The cost to replace the affected computer in my vehicle amounted to $2,400. However, upon reviewing discussions on Tesla forums, I have discovered that this is not an isolated incident; numerous other owners are facing similar failures, with some repair bills exceeding $3,000. Given the widespread nature...

Failure of all cameras, gps, and lane keeping system. It is available for inspection. It occurred after software update was pushed to the car. Tesla service has seen the vehicle and says that the internal computer has a fault and needs to be replaced. Yet, oddly enough, there are a lot of identical failures reported in Tesla owner forums. Around the same time as my failure in mid-December 2023. No prior indication of computer failure occurred. And the computer is still operational for items not related to the cameras and GPS. Safety concerns: The rear windshield has limited visibility, which is not an issue when the cameras are functioning. The safety notification when changing lanes does not work without the cameras and sensors. The lane keeping and adaptive cruise control do not work without the cameras and sensors. Tesla should investigate if a software update they sent over the air...

I had FSD engaged and the Tesla MY was navigating to my sister’s house in Falmouth, MA. My brother was in the passenger seat and witnessed the incident. The MY stopped on a road to wait to make an easy left turn onto another road. There was a vehicle in front of us waiting to make this same left turn. Another vehicle approached at high speed (my estimate is 60 mph) in the opposing lane. With the vehicle in front of me still waiting to turn, my Tesla abruptly pulled left and moved into the opposing lane about 10 feet before I managed to apply the brakes hard. The vehicle in the opposing lane swerved hard to their right to avoid a possible collision and continued on without stopping. It was overcast but not dark out. This is the worst I’ve seen during the past 3.5 years of driving this...

This pertains to the new NHTSA recall 23V-838 that forces Tesla to issue an OTA update changing the use of autosteer and attention notifications. Prior to the new update, I would use autopilot to assist me while I change the climate controls or radio station. After the update, this would instantly notify me that I was not “paying attention” which I am. Eventually it would disable my ability to use auto steer. Large all screen in put makes it difficult for me to adjust basic amenities in the car such as climate controls and radio. Since the new update, I felt that my in ability to use autosteer to assist me has made this operation significantly less safe. Not being able to safely make inputs to the car infotainment has made it riskier. Being all screen, there is no tactile feedback to know where my controls are without looking at...

ChatGPT Subject: Safety Concerns Regarding Recent Tesla Autopilot Changes (Campaign #23V-838) Dear NHTSA, I am writing to express my concerns regarding the recent required changes to Tesla's autopilot system under Campaign #23V-838. While I understand the importance of updates for safety, it appears that these modifications have had an adverse impact on the vehicle's safety and increased the potential dangers of driving. I urge the NHTSA to thoroughly investigate and address these issues to ensure the continued safety of Tesla vehicles on the road. Your prompt attention to this matter is crucial for the well-being of Tesla drivers and the public at large.

I was driving with cruise control on and the car violently hit the brakes when there was no one in front of us. We have noticed this is more common when cresting a hill. This happens at least once every time we are on a road trip. This needs to be addressed. We know we are not the only person having these issues with the Tesla and the “phantom braking”

Driving on Highway 80, west of Elko, NV. No obstructions on the road, no cars within 5 miles, no animals or birds on the highway. The vehicle aggressively brakes. It did this 4 times with the assisted driving engaged and 1 with cruise control engaged.

On a round trip from Albuquerque, NM to Tucson, AZ, we experienced 8-10 instances of phantom braking in our 2020 Tesla Long-Range Model Y. The occurrences happened when the car was in adaptive cruise control and lane keeping assistance. Highway speed was typically 75 MPH, weather was sunny, and roads were clear. Overall, an unnerving experience!

I was on a self driving mode enabled but it’s been raining for a while and I believe it showed the poor weather condition so FSD is not enabled but autopilot was engaged (but not 100% sure about which mode it was) It was around 2am in the morning and was on 580 southbound from Dublin to SFO. I was on the second to the left lane. It suddenly tried to go diagonally to the first lane. (Not like normal lane change but very abrupt almost like making turn 90 degree left) so I tried to cancel by holding on the steering wheel. And then it went out of control and start rotating until it stopped by hitting the center guard rail on the passenger rear side. The car stopped facing backward on the road (on the center shoulder). Luckily it was late night (around 2am) and there were no...

While driving at highway speeds, the car unintentionally went into neutral. The setup: The driver was on the highway with cruise control on. Upon turning cruise control off to prepare for entering an exit ramp, the car also went neutral. We lost power and the regenerative braking that you expect in this car. The center console stated something like “Please shift into drive or reverse”. The cause is that Tesla uses an up movement on the right hand gear stalk to cancel auto pilot, cancel cruise control, and to put the car into neutral. If that up movement is too long, the car will inadvertently go into neutral regardless of car speed. We reported this to Tesla and they suggested all model 3s and Ys do this. Some light searching online showed this happening to others too. This feels dangerous at highway speeds. And the point at which you are...

While driving at highway speeds (50mph-80mph), on 2 lane or 4 lane highways, in the day or night, in sunny conditions and overcast sky's, while using the cruise control (auto-pilot), the car will suddenly and unexpectedly apply the brakes. It happens between 8 and 10 times on every road trip, each way. Not only is it a shock to me as there is never a visual obstacle that seems to be causing the hard braking, but it is a dangerous safety issue to other motorists too. This has caused cars behind me to take evasive maneuvers to avoid a collision. Other motorists have mistaken this hard braking as me "Brake-Checking" them and very nearly cause a road-rage incident. I've had the car for about a year and have opened several service appointments with Tesla. Each time they close the case before the service appointment with a version of the reply...

On the last road trip, my car emergently braked for no reason when using cruise control and autopilot causing safety issues for cars behind my vehicle. This happened at least 6 times on my 500-mile round trip. I reached out to Tesla service and was told there is no fix at this time. in my opinion this is a dangerous problem that needs addressing in an urgent manner.

On several occasions, my car will either i) slam on the brakes when in assisted driving for no reason, ii) start beeping for a lab departure when I have no even made the slightest move to switch lanes, iii) windows will roll back down when I try to roll them up (not sure if that’s related to the FSD issues). I paid an extra $15,000 for FSD and not only does it not work, but it seems to have created unsafe driving conditions in my car.

I enabled Tesla's auto pilot feature while driving on highway. Throughout the drive of ~200 miles, the car had sudden phantom breaks for four times. It was very dangerous situations and could have easily caused serious accidents.

Under clear conditions while traveling on the highway, if adaptive cruise control or self-driving is used, the car will randomly apply its brakes. The car will quickly lose 5-10 miles of speed, and poses a hazard to cars behind us. In the 7-8 times this has happened in the last two months, there has never been an obstacle in our path. Unfortunately, this has rendered cruise control unusable

Nearly Every Single day on my drive home north on AZ hwy 90 my 2020 Tesla Model Y abruptly disengages and breaks from cruise control. it is especially startling when I pass a vehicle and then return to my lane only to have the car dramatically slow. I could be ok if it just disengaged cruise but daily multiple times it breaks on a fast moving highway

Prior to the incident a message appeared in the car indicating that the Lane Departure Avoidance features unavailable - Features may be restored on next drive. TACC was activated on the car. Auto Steer was not activated. The car is equipped with Autopilot only. It was traveling in the furthest left lane. A truck in the center lane attempted to merge into the left lane where our tesla model y was traveling. The car then steered hard left causing the car to be nearly our of control and swerving left and right. We were able to get the car under control, but we nearly were run off the road.

We continue to experience phantom braking when adaptive cruise control is engaged on major highways. On a recent trip, it occurred three times on I-90 eastbound between Madison and Janesville, WI, and again in Indiana. Our car does not have “full self-driving.” Most of these were relatively mild, but one was so violent that objects in the cabin were thrown around. If a vehicle had been following relatively closely, a collision would have been likely. This seems most likely to happen as we approach an overpass.

~3 times the car slowed down at ~65mph while on cruise control. Thank goodness no one was closely following us!!! DANGEROUS!!! The car lane assist feature which should warn when us when we're veering to closely to another lane or the edge of the freeway only works intermittently.

• Cruise control braked hard unexpectedly and for no reason. I'm describing a specific instance here, but this happens regularly. Specifically, the traffic aware system frequently misinterprets the data it is collecting. In this case, a car in an exit lane, slowing down to take a ramp. I was not in that lane, but there was no painted line between my lane and the exit lane. My car slowed to match the speed of the car on the exit ramp. In other cases, my car has slowed drastically when a car in a slower lane slightly veered into my lane by only a couple inches. There has been no risk of a collision when this happens, but my car suddenly braking then causes a new risk of collision for the cars behind me. • Car rapidly decelerated from 70mph to 35 mph while there was another car behind me. He...

Have had several issues with phantom braking. When in cruise control or auto drive there are times nothing is in the roadway but the vehicle will brake in middle of hwy. very dangerous

While driving on the highway at 59 mph using Tesla Autopilot functionality the vehicle braked so hard the wheels locked up and skidded without warning. There was no vehicle directly in front but there were two semi trucks on either side and vehicle directly behind me. The vehicle behind had to brake hard not to run into me. I took control of the vehicle and pressed the accelerator to regain speed and avoid an collision.

The autodrive features malfunctioned. The vehicle is "phantom" braking when a human could easily see there was no reason to brake. This is happening with autopilot (lane keep and adaptive cruise control) engage at freeway speeds (60-70mph). This is occurring randomly on a curve, in the day, at night, in a straight road, cars or no cars nearby. The solution being offered is Tesla service will check the tire pressure and they "remote educated" me by providing links to their autopilot description on their website which states that this can happen. These are extremely dangerous situations and these solutions are not sufficient.

Phantom braking during a drive on highway. Out of no where, the car breaks even when there is no one stopping in front of you. This resulted in car behind panicking and almost rear ending.

The contact owns a 2020 Tesla Model Y. The contact stated that while driving with the cruise control feature activated, the vehicle abruptly decelerated without warning. The contact stated that the dealer was made aware of the failure however, the cause of the failure was not determined. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 700.

While driving on highway using cruise control, the vehicle (without the driver's assistance) applied brakes to quickly slow the rate of speed. This occurred three times in the span of ten minutes. The weather was sunny and no other vehicles or objects were in the vicinity of my vehicle. After the third occurrence, I stopped using cruise control for the remainder of the trip.

On a 900 mile drive, in one day, the “speed cruise control” would abruptly brake, as if it were seeing someone in front of us. It did this at a minimum 5 times. Never was there a car closer than 1/4 of a mile in front of us. Once it went from 78mph to 38mph in about 3 seconds, when there was a car about 3 car lengths behind us. On the return 900 mile drive it continued, at a lesser rate. I have reported this to Tesla, and they claim “my” car reports do not show anything out of the ordinary, and these errors are sometimes caused by…and they gave numerous reasons, such as speed limit data inaccuracies, etc. they also have determined that my car does not show any computer faults so there is nothing they can do. Unacceptable

Phantom Braking in Autopilot: Coming back from Mammoth Ca in November 2022 on highway 395 and 14 we experienced sudden braking in cruiscontrol/autopilot numerous times with no cars in front of us while driving. One time there was a car behind us and almost caused an accident. This is a very dangerous situation in which Tesla must fix this issue or refund us money back for the Auto pilot feature. This has happened previously on long trips. We do not use this feature in regular commuting to and from work

On 9/11/22 at approximately 1:30PM I was driving north on I65 in northern Tennessee just before the Kentucky border. Conditions were heavy rain. Traffic was moving but heavy. I had autopilot engaged. I was traveling approximately 70 mph. Three lanes of traffic. I was in the far left lane. I had my hands on the steering wheel. Without any prior notice, I lost total control of the car. Seemingly all four wheels were autoplaning due to the wet pavement. I had zero control of the car. The car seemed to slow down, drifted into the full shoulder left lane, then rotated 90 degrees counterclockwise and hit the concrete center median. The car then rotated another 90 degrees counterclockwise and came to a full stop all in the left shoulder lane. The front airbags deployed. There were three people in the car. We were not injured and left the vehicle on...

During routine highway driving while using the included Autopilot (Adaptive Cruise Control) software, the vehicle will suddenly and without warning abruptly slow and apply breaks. This slowing can occur when traveling at 70mph (the posted speed limit) and attempt to slow to a speed of 45mph. This change causes a great safety hazard in the event of being closely followed or rear ended. This phenomenon is known to tesla and been colloquially termed "phantom breaking". No hazard or other external reason is present to merit a sudden breaking.

Many times over the past long highway drives while in cruise control, the car will suddenly and violently brake with no obstacles in the way. Thankfully no car has been immediately behind me so far, but I can concerned that this may happen again and I won't be so fortunate. I have a mobile service appointment upcoming but Tesla tells me they need to know the exact date and exact time (to the second) that this occurred which I am unable to tell them. This is frustrating.

I was driving on a clear day with trees shading part of the road when suddenly and unexpectedly the car decelerated abruptly. If another car had been tailgating me I fear it would have rear-ended me.

I reported many instances of what is know as "phantom braking" when using Adaptive Cruise Control when we went on our first long drives in the car when we took delivery. They recalibrated the front sensing cameras and that helped. It did not eliminate all events, but ACC was then usable in certain driving situations, i.e., when not in fast congested traffic as in metropolitan traffic. We took a long trip on freeway and two lane highways a month ago, about 3,500 miles, which had a few, non serious events. about a month or so ago, Tesla had a software update that said it was going to install "Tesla Vision", a camera only senor system, elimination the radar sensing our car has. The result was having quite a few more events of PB. One particular one was on a freeway (I8) heading east at 75 mph with no traffic visible...

The contact owns a 2020 Tesla Model Y. The contact stated that while driving at various speeds with the cruise control activated, the vehicle experienced phantom braking. There was no warning light illuminated. The contact stated that the failure would occur before crossing a bridge, or while a dark colored vehicle passed her vehicle. The contact took the vehicle to a Service Center and was informed that there was no fix for the failure. The contact was given tips on how to prevent the failure; however, the failure persisted. The vehicle was not repaired. The failure mileage was approximately 30,000.

When using the "Tesla Autopilot" feature phantom braking has been more frequent and aggressive following the recent software upgrades. Many times, phantom braking occurs when approaching an intersection or when lane lines intersect. The phantom braking concern was minimal when I first purchased the car. Strange enough it would happen going under an overpass or an elevated crosswalk. With time and software upgrades this concern was resolved but now the phantom braking events are more pronounced and sometime so quick it is difficult to implement corrective action and prevent possible rear end collisions, especially in highway traffic conditions.

The GPS is malfunctioning- showing the car in a random location, direction and speed. All automation needs to be disabled. The car will attempt to make a non-existent turn based on where it thinks it is, or will speed up or will suddenly decelerate because it thinks it is coming up to a cross street or traffic control.

With car in cruise control on freeway, sudden and hard application of brakes by vehicle, no human input.

Vehicle routinely forcefully applies the brakes for no apparent or warranted reason causing vehicles behind to take evasive maneuvers to avoid striking our vehicle. The vehicle on several occasions has also unexpectedly veered out of our lane into another lane, into oncoming traffic or off the road.

I was driving in a "train" of vehicles at about 65 mph using "autopilot" when my Tesla model Y slammed on the brakes when the paving changed color. I was almost rear-ended by the unsuspecting car behind me. Emergency braking without a valid reason, or even an observable reason, has occurred several times since we took delivery of then car two years ago, but not as severely. I am reporting this 2021 incident now due to the recent publicity. I urge the NHTSA to clamp down on beta testing of vehicle automation by unsuspecting new owners. Vehicle automated driving on public streets is a threat to public safety.

I have noticed when using Adaptive Cruise Control on my Tesla Model Y that it did phantom braking on me. It has only happened to me about 5 to 6 times and it scared the heck out of me.. Don’t know if I was getting close to a Semi truck and it pulled that phantom braking, but there was a time it just did it on its own when there were no cars around. AutoPilot I have no issue. Hope Tesla comes up with a software fix soon to resolve this issue as I love my Tesla and its a great car to drive..

unexpected activate brakes while in autopilot. rapid deceleration can occur without warning, at random, and often repeatedly in a single drive cycle .

When cruise control is on, the vehicle suddenly brakes. I only put cruise control on the freeway and it has happened 4-5 times over the course of last year, as recently as 2 weeks ago. I had to take over operation of the throttle and removed cruise control to make sure it wasn't going to cause any issue in traffic.

Driving in auto pilot mode in the three lane highway between Whitestown lebanon . I was going in the middle lane on autopilot .In the far right lane one Truck is merging into the right most lane.so truck is in the right lane and we are in the middle lane , but auto pilot assumed that we are going to crash and it tried to jump to the left lane and the vehicle automatically wobbled for few seconds and then it became stable in the middle lane. Had there Been a car in the left lane it would have been a fatal accident. If they said that it’s an assisted driving rather than auto pilot I would be more cautious. I bought this car due to the promise of autopilot thinking it’s safer it has put my life in risk which could have lead fatal accidents today. Please refrain Tesla...

My Tesla was in auto pilot, not full self drive. I was merging into traffic on an interstate, in the acceleration lane. Even though the car was in auto Drive, I stepped on the accelerator to merge a little faster. The car stopped dead. It coasted to a complete stop responded to no controls. It had to come to a complete stop in traffic traveling at 65 miles an hour before I could get it to start again. Luckily, I was being followed by my husband because I was taking the car to the auto repair for bodywork. He was able to stop behind me and luckily, neither of us were hit.