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.
2020 Tesla Model Y driver assistance complaints
Page 3 of 5: complaints 41 to 70 of 129, newest first, as owners wrote them.
While driving on interstate highways and using autopilot, the car would "phantom brake" unnecessarily in numerous instances. Once it caused a truck to swerve dangerously to the next lane when the car suddenly brake in front of the truck. Mirages and sudden dips on interstate highways seem to be one of the main factors, but other incidents were less obvious what the cause was.
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.
I had a major accident on Sep. 24th 2022 when the car sped the traffic light and was hit by another on coming vehicle. This crash has caused a life changing changes to me & others involved in the accident. The vehicle suddenly sped without my control without stopping on the red light. I also had a major financial & vehicle loss with legal activities still pending. Tesla is not investigating and not taking responsibility of this accident and the nearest dealership is avoiding my claims. My auto insurance Allstate is handling this claim.
~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 was caught off guard and had to manually brake hard himself to avoid hitting me â¢Â There are numerous independent confirmations of this behavior online, but I do not specifically know of any from an official "independent service center." Tesla denies the existence of the behavior. ⢠There is no real "component" to inspect, this is a software issue â¢Â There were no warnings or other indications before it happened.
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.
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
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.
The contact stated as he was driving behind a what he assumed was a 2020 Tesla Model Y when the vehicle suddenly stopped and turned to the right. The contact stated that the vehicle was traveling at approximately 40 MPH as it was approaching a toll plaza. The contact was unaware if the rear brake light had been illuminated on the Tesla. The contact stated that he almost t-boned the vehicle as it stopped and blocked the tow gate. The contact stated that he witnessed the vehicle stopping inadvertently several times. The contact was concerned as he read an article about Tesla vehicles suddenly stopping. The contact did not have the year or VIN of the vehicle.
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.
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.
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
1. Forward Collision Warning false alarm is very frequent. Often triggered by pedestrian on nearby sidewalk or parked car on street side. Tesla is using Forward Collision Warning to lower my safety score and raise my insurance premium. 2. Tesla sold me "Full Self Driving" package to me for $8000+taxes for more than two years and still have not delivered the product. It's a faulty system with lots of safety hazards. 3. Window not functioning per the recall notice.
In Tesla’s from model years before 2021, the side “repeater cameras” that are rear facing suffer from a light-leak of the blinker. There are three small holes in the PCB circuit board that allow light from the blinker to leak into the camera at night. Tesla subsequently fixed this problem, first by applying a sticker over the holes in the circuit board, and later by redesigning the part entirely. But this “light leak” problem exists on hundreds of thousands of cars. There are two problems with this: 1) Tesla has now changed their “Autopilot” and “Full Self Driving” software to a Tesla Vision system that ONLY uses cameras for the autopilot features, including lane keeping and lane changes. They no longer use ultrasonic sensors or forward looking radar, even though it is still installed on these cars. This reliance on vision makes it impossible for the Tesla side facing cameras to see when the blinker is turned on. This can result in unpredictable behavior when changing lanes or turning at night with autopilot engaged, including unpredictable or erratic driving where the car abandons a lane change mid course and swerves back into the lane. 2) Even when autopilot is not engaged, the blind spot monitoring in this car consists of a pop up window on the center screen showing the side view camera when the turn signal is engaged. At night, with the blinker on, the driver sees a bright light flashing intermittently in the side view camera. This is very distracting and potentially hazardous to the driver. Tesla has refused to replace the cameras on my car under warranty because they state the cameras are “neither a defect of materials nor workmanship” and are an “expected condition based on the inherent capability of the camera design”.
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 our own. Miraculously no other vehicles hit our vehicle
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.
At least 5 times in the last month, my Tesla Model Y will suddenly brake when there’s no obstacle in the way. This most often happens at highway speeds, a terrifying scenario. I believe it mostly (or exclusively happens) when I have cruise control on. I notice it happens when there’s a sudden change in the color of the road surface, like going from concrete to asphalt. It also happens when I’m cresting a hill - like it can’t see over the other side of the hill. I have not yet experienced it while having the “stay in the lane” feature, which also sets the maximum speed at 5mph over the speed limit. But it definitely happens when I have cruise control on. I have only had this problem for the past few months, so I wonder if there’s a bug in the most recent software version.
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.
Now that Tesla had disabled the car's radar in favor or a vision-only ADAS, I started getting many forward collision warnings when using Autopilot on curvey roads, mostly when exiting the curve.
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.
While driving cross-country on interstates, I've experienced multiple sudden braking incidents. Incidents occurred every day of a 3-day journey (so far). All have occurred between 12:00-14:00 local time on sunny days, dry roads, with no cars or other obstructions in front of the car--in some cases, with no cars in sight at all. Safety was not immediately threatened, but if in heavy traffic could have resulted in rear collision. I have submitted a service request to Tesla but will be traveling for the next two weeks so haven't spoken to a service rep directly--therefore no inspection, reproduction, or confirmation by deal or service center yet. No warning lamps, messages, or other symptoms.
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 neither in front of or behind our car. It slammed on, hard, the brakes and would have brought us to a complete stop had I not applied power. I reported the high number of PB events to Tesla Service, to which they replied, in essence, that ACC is a Beta feature and you just need to pay close attention when using it and it's not perfect. Well, its not close to reliable and is capable of causing major accidents. We avoided several because I always have my foot near the accelerator in case the car decides to stop. Tesla said that they could find no hardware faults in our car, but I suspect it is software, not hardware. I will happily join a class action suit. I will put the day the last one happened below.
Driving 1400 miles Santa Fe-Austin TX-Santa Fe, experienced phantom braking over 15 times. Generally happened while cruising on autopilot at 70-80 mph. Phantom braking occurred with no warning and for no apparent reason. The car suddenly jerked and lost 5-10 mph, and the autopilot went off.
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.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2020 Tesla Model Y?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history