This car is continually slamming on the brakes when in cruise or autopilot I have reported this to Tesla and tried to have them repair it but they say it’s normal. My 2019 didn’t hav3 this issue. One time I’d did this my wife started to chock on her gum when it slammed the brakes on so hard it dropped about 40mph in a few seconds.
2021 Tesla Model Y driver assistance complaints
Page 20 of 22: complaints 551 to 580 of 630, newest first, as owners wrote them.
The full self-driving mode in my tesla does not react correctly to speed limit changes in small towns. I will be driving with the FSD at 65 MPH when I get to a small town and the speed limit changes to 45 and then down to 25 for residential area the cars speed does not decrease quickly enough to be at the correct speed limit by the time the car reachs the speed limit sign. Based on the speed limit laws I was taught was the car you are driving and are slowing down you must be at that limit when you reach the speed limit sign or else you can be ticketed for speeding. The Tesla FSD is not in compliance with that specific rule of the road.
While on a 475 mile road trip, my vehicles emergency brake system was activated while using cruise control on more than one occasion with no visible hazard ahead of me. This caused my car to brake at speeds upward of 70 miles per hour on two lanes highways, leaving me to fear that any car behind me could easily rear end me and harm me or my children who were in the backseat. On another occasion during this same trip, the weather began to turn. Snow began to fall heavily leading to poor road conditions. My model y activated corrective steering twice at speeds of 10-20 miles/hr, both times attempting to swerve my car into the lane next to me occupied by a semi truck. These issues are unacceptable and need correcting as they pose a threat to passenger safety.
My 2021 Tesla Model Y has a huge problem with phantom braking. It even occurs when I am only using cruise control. Sudden stops and slow downs. I clearly has problems with large vehicles approaching in adjacent lanes. Not only does it scare the daylights out of my passengers, but it is a major safety issue is someone is following closely behind. The answer I get from Tesla Mobile service is to keep reporting it as a "bug". The answer I get from my Tesla Service center is "what to you expect...Tesla Vision is still in Beta mode". I am selecting a date below because your form requires it, but the problem has been occurring since I took delivery in July of 2021
The adaptive cruise control system is very dangerous due to constant "phantom braking" problems. With cruise control enabled, the car will randomly slow down, sometimes gradually and others times rapidly. Sometimes the deceleration happens when passing a large truck, or a car on the other side of the road. Sometimes it is in response to shadows on the road. Sometimes there is no discernable reason. Instances of rapid and unexpected deceleration make it likely we will be hit by another car or otherwise cause an accident. This problem is prevalent throughout all Model Y cars and detailed online. Dealers say that there is nothing wrong with the vehicle and they hope it can be fixed in the future by software. However, in the meantime, the dangerous situation exists. My vehicle has not been inspected by anyone for this purpose, at least not yet. There are no warning lamps or messages when this happens.
Hello, Tesla has released an update that will turn on the side camera when the blinker is activated. At night, the blinker can blind the camera making it difficult if not impossible to see any object. I'm concerned that this can cause the driver to turn into another car at night. The picture attached is with the hazard lights on and you can see how one camera works correctly and the other has a massive glare.
I have written to you before on my Tesla automatic emergency braking (phantom braking) problem. I am updating you on the issue. Please see the enclosed file.
75 MPH on interstate with FSD 10.9. 6 separate phantom braking events over 350 miles. Very dangerous in traffic.
When using cruise control or autopilot the vehicle will suddenly slam on the brake which almost caused an accident on multiple occasions. The lack of lasers has caused the cruise control and autopilot to become very dangerous to myself and others in road as the phantom braking it does for no reason is very powerful.
I was driving on the 7 mile bridge in the Florida Keys with the Adaptive cruise control set to 58 mph. There was no traffic in my lane for about a mile ahead of me. As an oncoming Semi approached me, remaining in his lane, my car applied emergency braking. I had to immediately add throttle to avoid a collision with the truck behind me. This “ Phantom braking “ has occurred on multiple occasions to me. There is no way to engage cruise control without the adaptive feature which uses cameras instead of radar on these new Teslas. I did not have this problem on my 2018 Tesla that did use radar.
Vehicle constantly experience phantom braking. Will randomly brake for shadows, vehicles in the opposing lane, and when it feels like it. Chance for rear collision is higher due to autopilot.
The cruise control and auto pilot functions failed while driving in the rain. The car would not disengage from auto pilot and continually would engage back into auto pilot and eventually locking tires and spinning out across all lanes of the freeway. My safety and all the drivers around me are put at risk when something that dramatic occurs. The car spun out completely out of control and after doing a complete spin the car continued to spin losing all control and ended up inches from the center median and was facing oncoming traffic. Unknown- I instantly called tesla and removed my memory stick from the vehicle, they are still conducting their "investigation". Took it into the dealer and had them look into the issue. They are currently remotely working on what caused the issue with their engineers. No warning lamps or messages appeared prior to the occurence.
Several times now the car has done a phantom braking event where the car brakes for no reason when using adaptive cruise control on two lane highways. Mostly it's when large vehicles like a semi truck or RV passes in the other lane. Sometimes it appears to be due to shadows like overpasses or trees. The car slows down so quickly sometimes that if someone were following me it may cause a rear end collision. Most of the time the slowdown happened without warning. I have submitted a service ticket with Tesla about this but this seems to be a systemic problem on the TMC forums: https://teslamotorsclub.com/tmc/threads/phantom-braking-in-my-new-model-y.253378/#post-6301315 https://teslamotorsclub.com/tmc/threads/phantom-braking-and-active-safety-features.248184/ https://teslamotorsclub.com/tmc/threads/possible-to-deactivate-tacc-and-use-regular-dumb-cruise-control-phantom-braking-unexpected-slowdowns.235813/ https://teslamotorsclub.com/tmc/threads/27-phantom-brake-in-10-miles-how-often-should-i-press-camera-button-to-report-10-6-1-fsd.250396/
Please see attached PDF
The car's adaptive cruise control system will suddenly and dangerously brake in random situations on multiple occasions. It presents a very dangerous condition should there be cars behind that can't brake in time
The backup warning system did not work when I backed out of a driveway on a dark night. I knew there was a black car (sedan I believe) parked along the curb across from the driveway, and could partly see it in the backup camera when the tail lights would turn on (i.e., when I stepped off the drive pedal), but was unable to tell exactly how close I was to the car. There were no beeps from my car to warn me. My car stopped abruptly as the edge of my trunk lid hit what I guess was the corner of the other car. All damage appears to have been to my car - a dent in the trunk lid. I reported all of this to Tesla through their service app, and received a list of places from which I can get an estimate to repair the damage, but never received an explanation from them of their evaluation of the car's records I want to point out that I believe my Tesla includes all camera sensors - a change they apparently made over the summer. My car was ordered in June 2021 for September delivery.
Traffic Aware Cruise Control is just about useless on 2 lane highways. Once enabled it is plagued by frequent decelerations for absolutely no obvious reason. What is more concerning is the application of emergency braking when meeting an oncoming truck, even on a well marked highway where the truck is centered in it’s lane. Fortunately this has not happened to me while I was being followed by a vehicle, but it is highly likely that a large truck or inattentive driver would have rear ended me in this scenario. Tesla service has looked at my car, and told me that everything was working properly, that it was a common complaint and they did not have a fix.
When driving on a two lane road and approaching an oncoming 18 wheeler the cruise control consistently slams on the brakes and I am concerned about the well-being of my 5 and 4 year old in the back seat. It whips them forward. I am also concerned about cars following me and getting rear ended with the force it is applying this phantom braking. I called Tesla and they said this is expected behavior and it might be fixed in a future firmware but no guarantees. I think this is an unacceptable answer regarding the safety of my family.
When cruise control or Autopilot systems are active, the car will often slam on the brakes and sound an alarm as if there going to be an imminent collision, even thought the lane is clear in front of the car. This happens most likely often when cresting small hills or on curves. There may be a car in coming in the opposing lane, but there is no danger as the opposing car is fully in their lane. The adapative cruise control or Autopilot system decreases the speed very quickly, often reducing the speed by 10-20mph within seconds. This causes panic for the driver and any cars behind us have to suddenly slam on their brakes, creating a dangerous situation. I own both a 2021 Tesla Model Y and a 2021 Model 3 that both have the Tesla Vision Camera based cruise/Autopilot/collision detection system. This problem has gotten worse as Tesla has released new firmware updates in recent months. Many Tesla owners are reporting that they are having the same issues recently. Tesla's response is that the systems are under development and that they will improve over time. The problem is that this is a safety issue NOW! They seem to be overly focused on developing and testing their full self driving systems that they are ignoring a huge safety flaw in their current cruise control and Autopilot systems.
On Monday November 22 at around 6:15 PM CST, I was driving my model Y and had Tesla's Full Self Driving Beta software engaged. A right banked curve on a two lane road in a rural area came up with a vehicle coming around the curve the opposite direction. The Model Y slowed slightly and began making the turn properly and without cause for concern. Suddenly, about 40% of the way through the turn, the Model Y straightened the wheel and crossed over the center line into the direct path of the oncoming vehicle. I reacted as quickly as I could, trying to pull the vehicle back into the lane. I really did not have a lot of time to react, so chose to override FSD by turning the steering wheel since my hands were already on the wheel and I felt this would be the fastest way to avoid a front overlap collision with the oncoming vehicle. When I attempted to pull the vehicle back into my lane, I lost control and skidded off into a ditch and through the woods, causing significant damage to the vehicle. I was able to retrieve the dashcam footage of this incident and it is attached here. I did analyze the footage myself briefly. You can see the vehicle leave the lane, and within about 10 frames, I had already begun pulling back into the lane before losing control and skidding off the road. Since this video is recorded at about 36 FPS, this would mean I reacted within 360ms of the lane departure. I understand it is my responsibility to pay attention and maintain control of the vehicle, which I agreed to when I enrolled in FSD beta. I was paying attention, but human reaction does not get much faster than this and I am not sure how I could have otherwise avoided this incident. I am thankful this was the outcome rather than a front overlap collision with the oncoming vehicle, which would have likely resulted in bodily injury. Tesla has confirmed that FSD beta was engaged, per the attached correspondence, but insists that this incident and the resulting accident are my responsibility.
I am experiencing phantom braking when using both the features listed below * Adaptive Cruise Control * Tesla Auto-Pilot I have experienced this safety issue when 1. I would be crusing on the road using either of these featuers. All of a sudden, and without warning, the car has applied brakes, even when there's no object / human in the same lane or attempting to come to the lane. 2. I'm cruising in the middle lane of a 3 lane highway, with no vehicles around. This has happened even when vehicles are following behind my car. 3. In both daylight and at night.
While driving my Tesla Model Y using cruise control, the vehicle will continuously brake suddenly for unknown reasons. In several instances, I was worried that the car following me would either hit my car or be forced to take other actions, possibly causing an accident. The system is dangerous and useless. When I contacted Tesla regarding my concern, they said something about the software program evolving…no fix available. I have had my Tesla Model Y in their service center three times and have had numerous phone conversations with them and their customer service department regarding this issue. They said they simply cannot do anything about it. Again, the cruise control system is extremely dangerous. Please require Tesla to resolve this problem immediately. Thank you.
On two occasion, our brand new Tesla model Y lurched forward from a complete stop. The first time, on 2021/10/09 at 4:36pm I was at a car wash and trying to put the car in neutral. Fiddling with the gear selector, the car jumped forward without me touching the pedals. I hit the breaks and neither the car or anyone else was injured. The second time, on 2021/10/25 at 8:10 am, my wife was dropping off the kids at school. At full stop the car lurched forward again without her touching the pedals or the speed controller. The car hit the car in front of it 3 times with force. The car as well as the two other cars in front of it got seriously damaged. My two year old son was on board, there was many middle schoolers around but thankfully no one was injured. Incidents were reported to Tesla right away who has assured us they would investigate but we have had no update since despite contacting them multiple times. They assured us they have the ability to download telemetry remotely but I am concerned that as time goes by data will no longer be available. We later got an alert on the app that the emergency braking system had been disabled at the time of the second incident. I have videos files, recorded by the car itself of both incidents as they are happening available. The body damage of the car is fully repaired but the car is otherwise available for inspection/data downloads.
I was driving on Interstate 80 in NJ this morning. I was in the middle of three lanes. In the lane to the right of me were two tractor trailers. Adaptive cruise control was engaged. For no apparent reason my vehicle suddenly braked hard, startling me and making me wonder what I might have missed in my surroundings. There was no hazard...this was frightening and a major flaw in the system that I have seen referred to as "phantom braking." It has happened to me a couple of times before but never on such a crowded roadway...I could have been rear ended. This component of the vehicle has not been subjected to a service call...the car has 5,000 miles. There was no warning.
While driving on an interstate highway (75 mph) at about 12am (little traffic) on four separate occasions, with cruise control engaged, the brakes were unexpectedly applied without warning, no forward traffic, no wildlife, no vehicles on the side of the road. Had there been a vehicle behind us, it could have resulted in a rear end collision. Several days later, on a two lane road (55 mph), cruise engaged, with oncoming large delivery/semi vehicles, again, the brakes were applied as if it was an imminent collision - which it was not. We have not seen any warning lamps, messages, warnings - however, we are new to this vehicle and not sure where we would see such a warning. After the latter event, I contacted Tesla service but was told it is an issue being looked at however there were no fixes available at this time. I have not driven with cruise control since as I am very afraid of being rear-ended.
Have a recurring issue with phantom braking, without apparent issue, causing the car to suddenly brake (hard) without warning. (60 mph to 30 mph). This happens when using adaptive cruise control. Dealer has been contacted and their response is that this is perfectly normal, it happens to everyone, and that the car and systems are in beta. They indicate all that mechanical components are in working order and my software is up to date. Over time this may be fixed. Meanwhile, I’m concerned about being rear ended caused by my car's sudden phantom braking. This issue is prevalent in other Teslas and reports on the internet are numerous.
Tesla's autopilot / adaptive cruise control / emergency braking is defective. On multiple occurrences I have had incidents where the vehicle's adaptive cruise control and automatic emergency braking systems have activated inappropriately. In one occurrence I was driving on I-17 through Phoenix in the middle lane. I was beginning to pass a pickup truck pulling a trailer (my front bumper was just behind the trailer) when the car detected this as an imminent collision and applied significant braking. I had to use the accelerator to disable the emergency braking, and this triggered a number of cars behind me having to brake as well. In a second occurrence I was driving on SR-74 westbound in phoenix between I-17 and Lake Pleasant Parkway. This is a two lane road in many sections, and at one point I had a semi truck and trailer coming towards me in the opposite lane and my car detected this as infront of me and applied emergency braking. Thankfully there was no one behind me as the vehicle reduced speed from 65 to 40 before I was able to push the accelerator and resolve the issue. There have been other incidents of it braking in ways that were unexpected and dangerous. What component or system failed or malfunctioned, and is it available for inspection upon request? Auto pilot / adaptive cruise control / automatic emergency braking How was your safety or the safety of others put at risk? See Above Has the problem been reproduced or confirmed by a dealer or independent service center? NO, but is well known among Tesla owners Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? NO Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? NO
When traveling down a clear road with no obstructions, the Tesla will unexpectedly put the brakes on, sometimes mildly and sometimes severely when the Speed Sensitive Cruise Control OR the Autopilot is engaged. This is not Tesla full self driving, just standard cruise. This is a known problem that Tesla is aware of and has not addressed. The problem has become much more pronounced in recent software updates. This happens frequently and sometimes causes an unsafe condition causing me to not want to use this feature while driving at all.
The autopilot randomly applies the brakes. Sometimes it applies the brakes on a 2 lane highway when a truck or large vehicle approaches in the oncoming lane. Other times nothing is in the lane and it slams on the brakes. Other times the forward collision warning starts making noises and nothing is in front of me. I took the vehicle in for service, but of course the Tesla tech could not duplicate. Although the invoice says "autopilot will improve as firmware is released."
While using autopilot (adaptive cruise control) and driving on two lane highways the car will suddenly apply braking. The braking is abrupt and aggressive. The concern is being rear ended even for vehicles following at a safe distance. The abrupt braking happens randomly and more consistently when there is an oncoming car, especially around turns or hills.
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