2021 TESLA MODEL Y Forward Collision Avoidance Automatic Emergency Braking Problems

The contact owns 2021 Tesla Model Y. The contact stated that while driving approximately 55 MPH with the vehicle on auto pilot, a large commercial truck in the opposite lane passed the vehicle, which then applied the brakes and slowed from 55 to 35 MPH. The contact stated that this should not have happened and was an instance of "phantom braking". The contact reported that once the commercial truck passed the vehicle went back up to speed within seconds. The contact stated that he did not notice if a warning light was illuminated, but the contact stated that he heard the vehicle sound an audible beep. The contact did not take the vehicle to a local dealer to be diagnosed. The vehicle was not repaired. The manufacturer was not informed of the failure; however, the contact went to the dealer to report the failure. The failure mileage was approximately 1,000.

(1) My car dangerously and aggressively applies the brake dropping the speed of the car between 3 to 30 mph within a second or two (phantom breaking) EVERY SINGLE TIME I drive the car in adaptive cruise control or auto steer. This happens on 2 lane roads, on divided highway, driving on straight and curvy roads, when there are shadows, frequently when a truck or car is coming toward me, and even on overcast days when driving on a freeway when there are no shadows and no traffic in either direction. The car seems to be sensing an object that is going to cause a collision and applies the brake even when no object, threat, or shadow is anywhere in view in any direction. I frequently have to immediately step on the accelerator to keep from getting rear-ended in what could be a severe or fatal accident. (2) On a...

In short: Phantom Braking While driving on single lane highways with Autopilot enabled my car slams on the brakes and alerts whenever a semi is safely approaching. What component or system failed or malfunctioned, and is it available for inspection upon request? - I assume the Tesla Vision System + Autopilot are what fail in this scenario. How was your safety or the safety of others put at risk? Immediately this puts us in risk of a rear end collision. Alert fatigue from false alarms creates a long term risk as drivers are trained to ignore / cancel alerts. Has the problem been reproduced or confirmed by a dealer or independent service center? Not explicitly. We have mentioned it to a dealer and said it was a common complaint. Also it is a well known (under addressed) issue amongst Tesla owners. Has the vehicle or component been inspected by the...

When using cruise control. My car will phantom brake. Most of the time it is when oncoming traffic is present… but a few times there are no cars around me… a few weeks ago, the car phantom brakes on an ice patch almost causing a wreck.

Automatic Emergency Braking. Known also as "phantom braking." Tesla is aware of the problem. Regardless of whether or not I'm using the standard cruise control or the more advanced full self driving feature, the car routinely hits the brakes even when there is no obvious obstruction in front of it. If the car suddenly brakes on the highway with another car behind it, it risks a rear end collision. No other warnings appear. The car simply brakes for no reason. This automatic emergency braking system should be removed for standard cruise control. It's more of a hazard than a benefit.

phantom braking, my car have driven 13.6K miles in the last 1 years. It happened once on the city street (early morning with no cars on the road and twice on the freeway, both time I was next to a big trailer truck, and no cars behind me, lucky.

While using adaptive cruise control the vehicle will suddenly brake. I thought it would get better after it’s system learned but still happens when a large vehicle or even a pedestrian is in an adjacent lane. Car has 3940 miles on it now. Last highway trip of 100 miles it happened five times. I don’t know how badly it brakes now because I keep my foot on the gas pedal while in adaptive cruise control so I can react quickly to it. We previously owned a 2018 Tesla 3 with radar enhanced “auto pilot” and did not experience this problem.

Each time I'm on a two lane rural road (one lane on each direction with the double yellow line between the lanes) the phantom breaking is unbearable (MYLR vision only). 90% of the time if there is a large truck going on the other side, Autopilot will slam on the breaks and beep like crazy thinking that the truck is going to hit me head on. I don’t think it is the forward collision warning as this never happens when I don't use autopilot.

Car randomly breaks while in autopilot mode. Very dangerous since someone can crash into me from behind. There is nothing on the road in the way and no emergency vehicles nearby and no stoplights or stop signs when this happens. The car does not always notify of blind spots when backing the car up.

Multiple times we have been on empty open roads traveling at 60-70 mph only to have the vehicle slam on the brakes and slow down to approximately 30-50 mph. There are no obstructions on the road or oncoming vehicles when this happens. This has been reported multiple times to Tesla and I have been told their are no issues and the the car “must have seen something on the highway”. This is totally untrue. The vehicle will also slam on the breaks in 2 lane highways if a large truck or semi is traveling in the opposite direction.

While driving on the freeway at 70 mph with cruise control activated, the Tesla suddenly braked hard. There was no emergency or vehicle entering my lane. This occurs on a regular basis, more so when passing a semi or large vehicle. Vehicles behind me have to brake or swerve to avoid hitting me. I have notified Tesla Service about the issue and their response was they know about the issue. I was told to keep my hands on the steering wheel and pay attention....UNACCEPTABLE!

Phantom braking!! It's happening almost everytime I engage autopilot and it's unfortunate because this system would be amazing if it wasn't do this issue. Anytime I'm in a 2 way highway and I have a semi or a large vehicle coming my way on the opposite lane it decides to slow down from the speed limit around 75mph in Texas all the way down to 35mph, which makes for a dangerous condition and puts me at risk of getting rear ended. I have reached out to Tesla Service and they said they can't do nothing about it. I have videos of these incidents but it seems like I can't upload on these Forms. Please reach out to me so I can send you these videos of the phantom braking.

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.

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.

Multiple times on highway car “phantom breaks” when there are no obstacles/cars in front of me. I noticed that the car seems to regularly do this at certain places the highway. For example, on one stretch I’ve had it happen multiple times going under a specific bridge when I’m in cruise control. The car seems to think the speed limit has reduced, leading me to believe the car is reading the overpass speed liMit, not the highway, and adjusting. On another highway, after a steep decline there is an incline. At the end of the decline, the car slams on the breaks as if it thinks the incline in the road is an obstacle.

I have experienced many episodes of sudden, unexpected and seemingly inappropriate strong braking. The most common circumstance is overtaking semi truck/ trailers that are slowly ascending the mountain slopes of Interstate 5 in southern Oregon. Often the trucks have their emergency flashers in use. IT self-brakes from 65 mph down to perhaps 30-35 mph and I "take over" by depressing the accelerator. It also happens frequently with oncoming traffic on 2 lane highways night or day and usually on a curve. The problem is frequent enough to avoid using cruise control on 2 lane roads and on I-5 mountain grades. It happens reliably on my way to town where an intersection has a flashing light and the approach is downhill into a right hand turn. It does not happen travelling the other direction and does not require any other traffic. For all of these, the sudden braking puts myself and...

Driving down the highway/interstate when autopilot is on and the brakes are automatically applied for no reason. This happens frequently, especially on two lane roads to the point where I am not able to use autopilot anymore of fear of the car behind me crashing into me when brakes are applied suddenly for no reason.

I have a 2021 Tesla Model Y. Washing Post reported an increase in phantom breaking recently. It's not just recent. I took delivery of my car in May 2021 and quickly learned that when in cruise control this car will randomly apply the brakes - at times going from 70's to 30's very quickly. In a simple drive from Las Cruces, NM to Albuquerque, NM with no traffic on the freeway the system will throw on the bakes while in cruise control at least 6 times. And it's repeatable. You simply cannot use cruise control on the free with any traffic for concern of the system engaging and causing an accident.

Since delivery the vehicle has experienced several "phantom braking" incidents in situations where no threat was evident, including some in which braking was initiated on clear, straight highways with no other traffic anywhere in sight. The events are aggressive and result in immediate profound loss of speed, making the threat of a collision an issue.

When using Autopilot, I experience multiple, repeatable phantom braking issues on a regular basis. While it is worse on two lane highways, I've also experienced the issues on separated freeways and interstates. The phantom braking varies from a minor throttle response to decrease speed to full emergency braking that drastically reduces the speed at a rapid pace resulting in unsafe driving conditions for occupants of my vehicle as well as those who might be following behind me. Situations that seem to trigger the phantom braking include cresting a hill with oncoming traffic, navigating a turn with oncoming traffic, a larger than average vehicle (commercial truck/tractor trailer) approaching in the opposite late, shadows cast by large trees or overpasses, and changes in pavement color - for example, transitioning from gray concrete to black asphalt.

I have experienced 3-4 occurrences of "phantom braking" while driving on the freeway with the autopilot system engaged on my Model Y. Each time, i have been traveling at 70mph+ when the automated system suddenly slammed on the brakes, causing me to decelerate by 20-40mph before I was able to override the systems by stepping on the accelerator and disconnecting the autopilot system.

Saw this article today in the Washington Post: https://www.washingtonpost.com/technology/2022/02/02/tesla-phantom-braking/ We have a 2021 Tesla Y. It does not have the Lidar technology. We have experienced this phantom braking when driving west and east across I-94 through MN and North Dakota and Montana. Sometimes it seems like it happens when we cross over a small bridge on the interstate and sometimes it happens randomly. We can't figure out what set it off. Anyway, I told my husband we should never use the auto pilot as that is when it occurs. So, we have quit using it. It is super scary when it happens!

On a recent trip to Minnesota when adaptive cruise control was engaged there were several ( >10) episodes when the car would suddenly decelerate for no apparent reason. On a two lane highway it might occur if a large vehicle such as a truck was oncoming in the opposite lane. On the interstate, the common scenario was traveling in the right lane going up a slight upgrade with a car passing in the left lane. Often the sudden speed reduction was 25 mph or more. On occasion even on a flat section the car might suddenly brake for no apparent reason. On one occasion this happened in the afternoon going west with the sun glinting off some shiny asphalt crack filling. No accident occurred, but if a car were following closely, sudden braking could cause a crash. Because of this erratic behavior I don't use adaptive cruise control except for...

My Tesla Model Y seems to be suffering from what is called "phantom braking". My vehicle was produced shortly after the radar was removed and Tesla went to a camera only system. My car has the lasted updates installed. It is not a Full Self Driving vehicle. Since I purchased the vehicle it has had a problem during low light or sunny conditions with suddenly braking when using the cruise control. The situation has been reported to Tesla multiple times and "bug reports" were recorded and reported to the service center. During one morning drive of about 35 minutes I reported 8 occurrences. Sometimes the vehicle will sound the emergency avoidance braking. The car will suddenly slow from 60 to 30 mph. On multiple occasions the vehicle behind me had to take evasive action to avoid rear ending me. During one of my service visits the vehicle was taken on...

On 2 occasions within the last month my Tesla Y experienced a radical but brief stopping response. This happened on a freeway while passing a large truck in an adjacent lane. The car suddenly slowed down and then immediately speeded back up. This happened a second time on a freeway but I am unsure of the specific circumstances. I got delivery of the car in Oct 2021 and both of these incidents happened in Jan 2022. It has only happened those 2 times. Thank You [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

I have experienced several instances of the phantom braking in my Tesla model Y. it primarily happens when I’m on a two-lane road and there is a large truck approaching on the opposite lane. However it will also phantom brake on a highway where there are two lanes going in one direction separated by a median with two lanes going the opposite direction. It seems to happen when it’s coming up on a slight hill, where you cannot see over the hill. The car will slam on the brakes in the middle of the freeway, which when going at speeds of 65 to 75 miles an hour when traveling with other vehicles going the same speed, it can be especially dangerous in Texas where the giant pick up trucks like to tailgate electric vehicles. In one instance the pick up truck behind me thought I was brake checking him and...

The vehicle driver assist system frequently has phantom braking in situations it should not be, especially when there are vehicles behind putting us at risk for a collision due to unexpected braking behavior of the car. This happens especially in setting of 2 lane roads with oncoming traffic, and guaranteed with a truck in the vicinity. On major highways it is less so, but does still happen occasionally. On local roads even if straight and no obstruction the automatic braking without notice occurs when least expecting. Also the lane departure system disables automatically for the remainder of a drive if you veer off a lane even once and didn't take the corrective action the vehicle thinks should have happened. That's not how a safety feature should work... It should remain on regardless. As much as I do enjoy this car, these quality issues definitely make you second guess and keep...

-Tesla autopilot phantom emergency braking, multiple times makes using the autopilot useless, can't even set it to just cruise control. Yes. -Hard, unexpected, emergency braking at highway speeds from 75mph to immediate 35mph. Dangerous to passengers and other motorists due to the sudden, unexpected high deceleration speed. -Yes. Reported the problem to Tesla service center Spokane on 11/15/2021. They performed a remote investigation and told me I had used the car in a manner/location that was outside the current limitations of the software. No further action until the software system is updated sometime in the future and remotely closed the service appointment without any further input from me. - No. Phantom braking started the day I picked it up 9/24/2021 and continues to this day.

Sudden braking while passing semi-trucks on a 2-lane highway while using Autopilot and Traffic-Aware Cruise Control. I made a video: https://www.youtube.com/watch?v=LW-nrsR1Bg0

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.

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.

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.

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

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...

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...

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...

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.

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.

Every time I drive on a two lane undivided highway with traffic aware cruise control or AutoPilot engaged, the car will slam on its brakes when a large vehicle is passing in the oncoming lane, even if the passing vehicle is safely passing. Phantom braking with vision only.

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.

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 driving on a two lane highway at 70mph with adaptive cruise control on, every time a semi would approach the car, the car would brake really hard with no notice. Not one car caused this issue. It was only large semis trucks or trailers.

Car is frequently emergency braking when autopilot is enaged and large trucks or semi tractor trailers merge from the right. Car will also unnecessarily and prematurely emergency brake when cars are climbing a hill. The unexpected braking has nearly caused several accidents and we have discontinued use.

When driving on cruise control the car will suddenly and randomly decelerate and/or break for no reason. I have had this happen on empty two lane highways and on 4 lane highways with cars around me. It's incredibly stress full and if cars are following too close very dangerous.

When on Cruise Control or using Autopilot mode, there are frequent phantom breaking issues. On a long trip, we experienced phantom breaking consistently on the Highway both at night and during the day. These phantom breaking issues would sometime be significant and immediately drop speeds 10 miles an hour creating a danger of surprising people behind us. On a 2 lane country road, the issues are GREATLY compounded. The breaking would constantly trigger with oncoming traffic in the other lane and break VERY hard with the auto break alarm sounding. At night on a country road, it occurs with almost EVERY oncoming car. It is amazing to me that this made it through quality control because it is easily reproducible. The auto braking feature should just be turned off for country roads if this can't be fixed. At one point, I was right next to an older Model 3 on...

On September 26, on our first long distance trip with our just delivered (9/17/2021) Tesla Model Y, during daylight nice weather driving with Adaptive Cruise Control switched “On”, on at least 6 occasions (strait roads, freeway and non-freeway driving), the car suddenly, without any reason, violently slammed on the brakes. These events are hair raising for me and passengers, let alone for a driver behind me. If he/she does not pay attention at that very moment, the result could even be disastrous. I would never have expected such a serious safety issue with a Tesla. Suffice to say that this is absolutely unacceptable to me. When checking out the web, many people reported similar issues with their Model Y vehicle. I had the car checked-out at the Tesla Lynnwood, WA, Service Center on September 30, 2021, and when picking-up the car I was informed that no anomalies had been found....