Automatic Emergency Braking problems of the 2021 Tesla Model Y - part 2

On a long trip on I-70 across colorado and kansas I experienced 4 instances of "phantom" braking while using cruise control. I had set the speed at 78 and the car aggressively braked itself as if there was an object in the road when there was no object or reason to brake. In each instance if a car had been following closely they likely would have crashed into me. It also causes panic to the driver when the car aggressively brakes. I am contacting Tesla service today to report this issue and hope that it will be addressed but there has not been any inspection at this point. There was no waring or issues with the car prior to this and it has never happened to me before. It only occurred when using cruise control as I do not have full self driving and was also not using lane assist.

When using cruise control, the car will suddenly brake for no reason.

Experienced phantom braking 6 times. There was no warning automatic emergency braking system engages when there is no other vehicle around. Also experienced phantom braking with automatic emergency braking system turned off but cruise control was on, 2 times. Tesla shop replaced some type of coolant sensors and recalibrated mirrors but phantom braking still occurring. Technician took vehicle out on highway and did not experience phantom braking, and suggested more monitoring from me using "bug report" on screen to document incidents. Currently I avoid cruise control and automatic emergency braking system because of the potential of being rear-ended with rapid and unplanned slow down. This is a dangerous issue.

While travelling on TX-130 legally at 85 miles-per-hour with cruise control enabled, the braking system suddenly and without warning self-engaged, greatly reducing the speed of the vehicle. System available for inspection upon request (however I can help). The sudden speed change at such a high speed is alarming to the driver, possibly provoking unneeded corrective action which could destabilize the vehicle. If another vehicle had been following even reasonably closely, a collision was very likely. A collision at such high speed is obviously very dangerous. Manufacturer has not been contacted, but such "phantom braking" is the subject of frequent news articles from various sites. No explanation for the cause of the braking was displayed.

I was returning home with my family at around 7 pm today (10/23/22). The autopilot (basic autopilot) was engaged and the vehicle was moving at 50 mph. Suddenly the car seemed to have engaged the brakes and I felt it almost came to a stop. At that time the red steering wheel alert appeared on the screen with the message to take control immediately. I had not braked nor there was a vehicle or any other object or vehicles in front of me or behind me. No vehicles were on the other lane either. The only thing I can clearly remember was a pickup truck waiting at a stop sign in a street connecting with the road I was on on the opposite side from me. Luckily there were no vehicles directly in front of me or behind me. It would have caused an accident if there was car behind me. All of us really got scared and my children are claiming they will never travel in my Tesla again. The vehicle may be inspected if needed. From what I read about this phenomenon it looks like what I experienced was a “phantom braking” event. The vehicle has not been inspected by anyone at this time after the incident.

On many occasions while driving on a freeway near a feeder road the car automatically breaks by itself. I have come close to being rear ended several times. It appears the vehicle turns this feature on at the beginning of each new trip even after I have turned it off and the consumer must turn it off every time they begin to drive. I have also had instances of going around a bend and the car thinks it sees something, usually the barrier dividing traffic and breaks by itself.

Phantom braking on 4-lane highway with no other vehicles near.

When driving with autopilot enabled, the brakes suddenly and sharply come on when I crest a hill. It's very disorienting and could be dangerous if the road is busy. The autopilot should not be beta tested on consumers and other drivers like this.

When I was traveling at speed around 70mph on highway. Tesla has applied emergency brakes and locked the steering, which made telsa rotate(spinned) 3 times on its own and stopped. Luckily no vehicles were near on either ways. The vehicle was all the way stopped on opposite road and I was able to start after some seconds it stopped and started my driving. No vehicles were near or nothing approached to apply emergency brakes. When contacted telsa they told to schedule service appointment and no help was given.

When in autopilor mode (cruise controll) the vehicle ocassionally brakes for no known reason (phantom braking). This usually happens at the crest of hill if there is a guard rail. Or if there is a low overpass overhead. I have reported this before (it is an ongoing problem) and discuss with Tesla representatives who reply that the car will "learn" to avoid this behavior. It is an obvious collision danger if someone is following closely. On 09/27/2022 this occured 8-10 times during a 600 mile trip.

Using normal cruise control in the highway, my car brakes randomly and suddenly. This phantom braking has happened over 10 times in the past two weeks! it's very dangerous.

Vehicle is experiencing “phantom braking”. Has happened dozens of times. I have contacted Tesla a few times regarding this, and they downplay everything.

While car was on cruise control. The car went off cruise control without intervention or warning and slowed down quite abruptly. This occurred about 4 times in a 4 hour period while going interstate speeds.

During a drive on 09/06/222 the car had 3 instances of phantom emergency braking while using autopilot. All the times there were no cars around the Tesla, the stop was a hard brake that jerked passengers around as well as shifting cargo. This has happened periodically before but now it is become common on every drive. Two of these instances occurred with in minutes of each other. The other happened later in the drive after stopping to charge. A hard stop like these could cause a serious accident if someone is following to close. These hard brakes could also cause whiplash style injuries, seatbelt abrasions, or bruises to passengers. There were no warnings, messages or sysmptoms prior to the issue.

Tesla's traffic-aware cruise control system has malfunctioned on my vehicle several times. It will often brake hard at high speeds despite there being no vehicle or object in front of me.

Traveling at 80 mph using autopilot on an open freeway when suddenly a phantom braking event occurred and slows us down to 50 mph in 5 seconds. There were no objects on the freeway and the closest car in our lane was at least one mile in front of us.

Frequent, random, phantom braking using cruise control. Informed Tesla with times +/- one minute. Sometimes the braking was very hard and could cause a rear-end collision (at highway speeds). Always occurred with no warning and highly variable conditions (light, or hills, or overpasses, and then apparently nothing). I called Tesla and technician said overpasses were a problem. Vehicle and components have not been checked.

I own a 2021tesla Model Y. I took possession of it on August 7, 2021, in santa barbara, CA. Ever since, I have had numerous instances of abrupt automatic emergency braking (phantom braking) episodes while using cruise control or autopilot. On January 26, 2022, I had 47 episodes, in just a couple of hours. This is typical. Several of the phantom braking episodes occurred with vehicles tailgating me. This is a grave safety issue and requires immediate attention. My Tesla Model Y has been to the Tesla service center over 4 times regarding this problem without resolution. They say phantom braking is a software issue and only the engineers can fix it. I was assured soon after delivery that the software would be updated quickly, and it would fix the problem. The issue still exists. I am very disappointed with the vehicle and fear for my safety. Please require Tesla to remedy this very serious safety issue immediately.

During daylight hours when the autopilot is engaged at normal highway speeds - the Tesla brakes engage and quickly slow down the car. It occurs on long straight roads with no traffic. This appears to be a "phantom braking" issue that is causing my car to suddenly brake for no reason. There are never any cars around when this occurs-- just long clear roads. This can be very dangerous. Last known occurrences were on Aug 13 at 8:30a and 10:29a of this year.

The vehicle was on cruise control (not auto-pilot). Driving on freeway approximately 82 mph when the vehicle slowed to 60 mph instantly numerous time within my 160 mile drive. There were no vehicles in front or beside me. There were no obstacles in the roadway or on the side of the road. Sunny day with no clouds. There were no warnings lamps or messages that would indicate the car was going to brake. My safety was put at risk if there was another driver behind me, I could have been rear-ended. It could also had been very dangerous if there was adverse weather. Tesla was not able to recreate the problem and never found any problems with the vehicle. This was not the first time we took the vehicle in for phantom braking. Tesla blamed the driver. I was also told by a Tesla representative the the vehicle can brake unexpectedly by sensing a shadow on the road from a cloud. Apparently there is no way to disable this feature. The vehicle has been deemed unsafe to drive by our senior management as this is not the first time this has occurred and Tesla has not remedied the problem.

Using autopilot adaptive cruise control, the vehicle on several occasions but mostly on non median highways the car for no apparent reason brakes hard. Vehicles around me especially behind are put in danger by my sudden, hard braking for no apparent reason.

When autopilot, it’s sudden breaks with no reason. My wife got neck injury.

This is a supplement to nhsta safety issue id 11467902. I requested service from Tesla. Attached is the service center's response writing that it is software subject to updates. This is unacceptable to me as the car is not driveable with this safety issue.

I have been experiencing that my Tesla suddenly automatically slammed on the brakes while it’s on self driving mode on highway specifically I-66 and while returning from my work from nebraska avenue complex to ashburn va. This automatically phantom braking is very dangerous.

During 350 miles of driving, I experienced over 35 phantom braking events. Most were while driving at 75 mph. Some were while driving 45 mph. It did not matter whether I was in autosteer with cruise, cruise alone or driving manually. I turned off emergency braking on the screen. I still had incidents. Some incidents were severe to the point that I could feel the abs. There were no other cars, structures, signs etc. In the vicinity. Had there been a semi following me, there would have been an accident. If another car, I could only hope that they had traffic aware cruise and emergency braking. This is unacceptable as it is so dangerous.

Phantom braking. Had car on cruise control and fsd and car would brake excessively for no reason.

I was driving on auto pilot and with no obstacle in sight or the need to do so, the car aeb system get activated ( phantom braking) another complaint that I got is went the traffic lights changes to green and I'm on auto pilot and the car slower down on the middle of crossing that intersection that can create an accident because the car from behind do not expect you slower down, the aeb system get activated went it's nothing in front of you.

Driving on I-43 in wisconsin on June 2 around 2pm cdt while in cruise control the car suddenly went into emergency braking and slowed down dramatically requiring me to override the system. There was very little traffic and a semi-truck about 200-300 yards ahead of me.

While driving using cruise control or auto drive the car randomly brakes while at highway speeds. There are often no cars or objects in front of the car. I have almost been rear ended, because the car hit the brakes to almost stop. This happens every time the vehicle is placed in regular cruise control or auto drive.

Unexpected and rapid slowing/braking of vehicle since new in November of 2021. Occurs when on cruise control usually at highway speed, more often on open highways and have possibly (though not always) related it to cresting a hill, distant reflective “water mirage” on our western roads, passing large trucks, two lane highway having large oncoming trucks +/- on curves. On one occasion while passing a semi truck with car on my tail came within a foot or so of being rear ended. Many other occasions where got to point I do not feel safe using the cruise control. We have driven it from denver to tucson in November and back in may, both times was worse on wide open western roads, sometimes tho not always with bright sun, pretty unpredictable and random but often to point of not using any of our autopilot or cruise control functions with confidence of safety. No warnings, lights or prehappening signs. Reported and examined in tucson on arrival there in Nov/21. Told would “get better with time” and further hardware updates. Hasn’t happened with city driving (tho rarely use cruise control. Happened a couple times on highway drives in arizona while on cruise and thought maybe better until recent trip to denver when it was as severe as November. Again contacted Tesla and told would lengineers are aware of problem and would be fixed with hardware app fix at end of June. Recontact them in July if still an issue. When serviced in November for this issue tech said he could see in computer log what was happening. When I set up appointment this time basically said live (or die) with it until June and nothing they could do til “hardware fix”. In blanks below I entered last episodes date. It has been ongoing from 11/2021 to present at speeds from 50 to 80 mph. Started with first trip when less than 300 miles til present 5436 miles on it. Could almost guarantee it would happen on highway trip with cruise control if you would like to risk your life on a test drive.

My Tesla Model Y will experience phantom braking while in auto pilot / adaptive cruise. It happens randomly but does occur every time at one point in tacoma on I-5 head south on a bridge just before the tacoma dome.

My Model Y Tesla, while driving on the freeway using full self driving, would abruptly slow down from 70mph to 40 mph in matter of seconds without warning and luckily there was nobody around me. I did a bug report on it many times but Tesla discounted that. Also my front windshield wipers would come on for no reason even on a sunny day. Sometime on a raining day when going into a tunnel the windshield wipers would stop and would not come back on when I get out of the tunnel and that is really scarily as I was unable to see during heavy rain. I had to manually turn it on and that took a few seconds and in the meantime I could not see anything due to heavy rain. I brought this to Tesla and they told me that the windshield wiper control and the headlight use the same sensor and there is nothing I can do except to place the windshield wiper on manual mode. The rain detection wipers are on many different model cars without issues. I am not sure why Tesla could not add an additional sensor just for the windshield wipers.

The contact owns a 2021 Tesla Model Y. The contact stated while driving 70 mph with the adaptive cruise control activated, the vehicle experienced phantom braking. There was no warning light illuminated. The contact depressed the brake pedal to disengage cruise control. The contact then depressed the accelerator pedal and was able to continue driving. The contact stated that there were no other vehicles around the vehicle at the time of the failure. The contact stated that the failure reoccurred three more times while driving. The manufacturer was notified of the failure through email. The vehicle was not diagnosed or repaired. The failure mileage was approximately 4,300.

The contact owns a 2021 Tesla Model Y. The contact stated while driving 75 mph, the vehicle inadvertently stopped without warning. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 1,600.

Repeated random automatic braking while using cruise control at highway speeds. Near miss of rear end collision. Tesla service representative just said to live with it and be careful.