general problems of the 2021 Tesla Model Y - part 2

Jan 13, 2023 at 7:02am pst. While using adaptive cruise control with lanekeeping, I was driving in second lane from the right at a constant speed. There was plenty of room in front of me- no car nearby. As I was slowly passing the car to my right, another car that was behind the car to my right began a normal lane change to its left into my lane behind me. For no reason, my car began to slow down suddenly. Video footage of cameras on my car show the moment when the front of my car pitched down because it was suddenly slowing down. The rear camera view shows when my car's brake lights illuminated for no good reason. I immediately intervened and accelerated back to my highway speed so as to not contribute to the car behind me running into me or having to suddenly brake itself and leading to a problem for yet more drivers. These video files I am linking to show the incident 14 seconds into each video. . Read more...

Car sufferers from “phantom braking” and will aggressively brake while adaptive cruise control is engaged for no apparent reason. No “regular” cruise control is available to over ride this.

I was driving on highway 395 in California on Jan 6th in the afternoon. It was a very clear day. I was driving north on the 2 lane portion of the road north of adelanto and kramer junction with cruise control on set to about 72. With no cars in sight in front of me the car hard braked with no cars in front of me. I disabled cruise control and later enabled it again. It happened again. I contacted Tesla and they determined there no hardware issue with the car. I am afraid to use cruise control now in the car.

Tesla "traffic aware cruise control" occasionally unnecessarily applies brakes aggressively for no apparent reason when cruise control is in use. This presents a hazard to other driver's who may be behind the Tesla. This phenomena is well known to Tesla owners who have repeatedly posted about it in Tesla's owners forum. It is often referred to as "phantom braking". There is no option for the Tesla owner to disable the "traffic aware" aspect of Tesla's cruise control I believe Tesla could resolve this problem with a simple software update which would allow the Tesla owner to use cruise control normally without the "traffic aware" feature. The "traffic aware" feature is part of Tesla's problematic "auto pilot" feature. However, my Tesla is not equipped with "auto pilot". My Tesla is available for inspection upon request.

I had the adaptive cruise control (autopilot) engaged on i95 and had it set to 60 mph. Twice between a minute, the Model Y lowered the cruise speed to either 40 mph and 25 mph while on the interstate. No obstacles were in front of me to affect the cruise control system.

In traffic aware cruise control (aka autopilot) car randomly changes the maximum set speed. This has caused a dangerous dramatic slowing of the car when highway driving. Car should not change speed setting without human input. I have video of this occurring.

Tesla y unintended acceleration! driving my Tesla I got a phone call that did not show up on screen then 1-3 seconds later my car took control of itself and rapidly accelerated. I had no control with no steering or brakes. Powerless inside an accelerating vehicle! the car then crashed up on the median through a private community light post and into a tree. The car did not stop until the battery was severed and destroyed by the tree. All airbags went off and all glass shattered. There was no prior warning at all. Insurance adjuster deemed the car a complete total; not worth repair.

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

I drove from flagstaff, az to las vegas, nv on 10/26/2022. I attempted to put my car in autopilot (adaptive cruise control) around a dozen times during this 260 mile trip. Every 10-25 miles the car would brake extremely hard forcing the passengers to lunge forward as if the brakes were being slammed. In every case, the car was in the same lane (no lane changes) with nothing but open road ahead. In most cases there wasn't a vehicle in front or to either side of me (only behind me). No corrective messages or indications appeared on the screen to explain this action. The only corrective action I could take was to hit the accelerator to avoid a rear end collision. When I contacted Tesla about the issue, they checked the logs during this trip and found no faults in the system to explain this behavior.

While driving on freeway on a clear day with no other cars in front of me the car suddenly hard brakes such that one could feel the anti locking activating. I was lucky there were no cars behind me or it would have been vary dangerous. There was a car on my right but it was holding its lane and there was no visible reason for emergency braking.

While driving with cruise control set to 70-74mph, we had several incidents of phantom braking on a recent road trip. From 70mph with no obstacles, trees, structures, or other cars in sight, the car would suddenly brake itself. This happened multiple times, sometimes just a minute or so after the previous time. We were saved from being rear-ended only because the cars behind us were far enough back, but it was terrifying nevertheless. We cannot use cruise control anymore. Tesla must address this totally unacceptable safety issue.

Adaptive cruise control has failed many times. Recently had adaptive cruise control set at 75 mph on interstate. With no warning, the car instantly slowed to 55 mph. If a car would have been behind me I would have been rear-ended. Or worse, if someone behind me thought I was intentionally braking hard or "squating" they could become angry and instigate a road rage incident. The car provided zero warning before it braked. The car has not been inspected yet. Yes, the car is available for inspection.

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.

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.

At night the wipers run when cruise control is engaged even though the windshield is clean and there is no precipitation. This situation also occurs when autopilot is engaged. I've complained to Tesla's service center about this issue. I have text documentation to attach as evidence. A web search indicates there are many Tesla owners complaining about these issues for years. I've owned the car for 16 months and only in the last 2 months has this problem started. My daughter has the same car and does not have this problem. Years of complaints by other owners indicates this is a major problem why hasn't the NHTSA pressured Tesla motors to address and repair these issues?.

Autopilot was on during a light rain event where I was traveling less than the posted speed limit on the i95 northbound highway. The autopilot appeared to force the car to abruptly jolt the steering wheel/tires, causing a slip/ hydroplane of the front end which forced the car into a left/sideways slide across the highway. The car slid sideways for about 100 feet or so before going straight into the concrete divider along the highway (front driver side initial impact, then rear driver side 2nd impact). Control could not be regained with the vehicle. Steering did not work (tried to correct the path), it felt as if brakes did not slow the vehicle as the car approached the divider. Autopilot was fully engaged and lane keeping was active… with at least one hand on the steering wheel and moderate level of attention to the road. I must say I had likely became over-reliant on the autopilot. No warning was provided to me as, prior to the incident. A similar hydroplane problem can also be seen on a youtube video posted online for the same model car. I experienced the same outcome as the other vehicle except I hit a divider after crossing lanes. I am however very pleased with how well the car handled the impact and how well the airbags went off, although also unfortunate- I do feel like the car may have been partially responsible for the accident itself. I have experienced a few prior occurrences where the car will jerk the wheel when in autopilot to keep or find a lane, even with hands on the wheel and full attention facing forward.

While driving cross country on interstate highways using cruise control my car would try to stop itself. During a 500+ mile day it would do this 10x per day. Most times hard enough to engage seat beats. There has been no inspection. Tesla is denying a problem. The danger is if someone is following too close they could resend me. I was never in traffic when this happens. Never anyone in front of me or next to me when this happens. On line they call the phantom braking. I can’t tell if it’s braking, or the cruise control disengages and the car is suddenly stopping because of one pedal driving mode.

Car took over the control from the driver. Major crash could have happened no manufacturer no.

Car regularly brakes for no reason causing near accidents constantly and posing a huge safety risk. Additionally, the full self driving option is totally unusable. Both these issues have been reported to Tesla multiple times. We have been told the only way we can have an actual working cruise control is to disable the full set aware driving without refund for that bert expensive option.

While in cruise control, which is adaptive, vehicle will abruptly slow down for no know reason. Usually there are no other vehicles, no highway obstructions, nothing that I can see. Tesla finally told me that this is a "known issue", after making a service appointment, and them calling me to cancel the appointment.

A. 3 or 4 times while I was driving on the highway with cruise control the car very suddenly DE-accelerated even though the road ahead was completely clear. This happened before. B. Also later on the same trip the car hit a part of a tire tread left on the road. The underside of the car was apparently damaged. The screen message was "okay to drive. Power reduced". Over next several hours the power, and later other functions like air conditioning, and maximum speed was reduced from 69 to 67 to 65 to 62 mph and message "okay to drive" was repeated. Suddenly while car had message of 62 mph maximum speed it suddenly wouldn't go over 37 mph. Seconds later it dropped to maximum 13 mph while still showing "okay to drive - 62 mph max speed". I pulled over on shoulder and car wouldn't go into drive function.

My wife and I have owned the Tesla Model Y for one year. We have taken it on several long distance drives from our home in moscow idaho to the oregon and washington coasts, vancouver bc and seattle. During each of the trips we experienced phantom braking when the car was driven with cruise control engaged at highway speeds on 2 lane highways. Phantom braking has occurred when 1) there was no oncoming traffic during daylight hours 2) with oncoming traffic that was not in our lane 3) when there was a slight turn in the highway and no traffic. The most recent phantom braking events occurred 7-14-22 and 7-30-22 on washington highway 26. When the phantom braking occurs it appears to be random. The car will very quickly drop from 65mph to 55mph causing us a scare. We do not use the cruise control feature anymore on the two lane highways. Its just too scary when it happens. We have complained to Tesla and have submitted service requests and was told they are aware of the problem but no corrective action has happened yet.

The driver infotainment system locks up randomly. Which makes all safety features, turn signal indicators, backup camera, reverse mode (mirrors drop), speedometer, collision sensors, etc non-functional. Until either the system crashes or finally unfreezes. This also removes one-pedal driving as well when frozen. Version is 2022. 16. 3.

My car is experiencing phantom braking nearly every time I use cruise control. It only happens when there are no cars or other obstacles in front of me. It happens at various speeds. The braking slows the car to a stop within seconds if I don’t immediately disengage the cruise control, even at highway speeds.

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.

Was at a drive through and took foot off the brake and barely put any pressure on accelerator the car went out of control — sudden acceleration. . First time this has happened with this car. Was definitely not working properly. Less than a second was at full speed. Had to swerve to try and avoid the car ahead of me. Entire left side of car is crushed and torn apart.

On 6/25/22 our 2021 Tesla Model Y with 16,163 miles had a sudden unintended acceleration, it didn't responded to the breaks and within seconds hit a parked car and finally stopped when it crashed to a large tree. It was a "total lost" by the insurance. Around 1pm on a clear sky day, driving out of a small gated residential community, before exiting I pulled over the side of the road for a few minutes, when I resumed the car suddenly accelerated to what felt like full speed. While I stopped by the side of the road the car remained in "d" mode, when I resumed I forgot that it was already on "d" and pushed the shift level down; we think the car went to cruise control to the last used speed which was probably a highway speed. The breaks didn't stopped the car and didn't cancel the accelaration. It traveled out of control less than 150 feet before it crashed to a large tree. For some "unknown" reason, the footage of the 4 cameras got erased from my usb memory stick. The only video left was the front camera and that video was cut a couple of seconds before the first crash. Tesla took almost a year on their "investigation" and the result was a long technical bs indicating that they didn't found anything abnormal. Driver airbag deployed.

Auto pilot issue hi support few days ago while I was coming home from work my Tesla Model Y suddenly stop after disengaging from auto pilot. I was driving on 57 n near db exit I was pressing accelerator paddle with no luck car did not move for about 10~15 seconds I was in the the middle lane I was scared to death I was afraid of that someone will hit from the back driver’s behind me were honking I thought I am going to die very scary moments after about 10~15 seconds car suddenly started moving again at very slow speed and I was able to use accelerator to increase the speed at normal speed I am still scared did not drive since that day pl look into & advice for fixing VIN number attached shashin kadakia 24438 thunder trail diamond bar CA 91765 909 262 5555 thanks.

We just completed a 6500 mile round trip road trip from so cal to toronto canada and back. 5/24/22-6/12/22 during the trip we used the "auto pilot" with and with out "auto steering" not full self driving. I lost count of how many times we encountered "phantom braking" with the car at highway speeds. My guess would be at least 50 times. It got to the point where I would not use auto pilot especially when there was heavy traffic at full highway speeds. My deduction on why this is happening is that the Tesla cameras are "infrared" sensitive and it seemed that the car was applying the brakes when it would see the heat waves off the hot road surface. Also in early morning one day the sun was directly behind us and the cars shadow was directly in front of us on the road surface and it kept applying the brakes thinking it was another car. In slow moving bumper to bumper traffic going 30mph or less does not seem to initiate the "phantom braking". But at highway speeds it is super scary and dangerous when this happens. ;(.

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.

The vehicle braked and slowed down on the highway for no reason when on autopilot. The speed of the vehicle was around 55 mph when suddenly it stated to decelerate for no reason. Ot resume speed after 100 ft or so.

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.

Phantom braking on highway when using acc and fsd. When going 80 mph car will suddenly brake for no apparent reason. This happened over 12 times in one day on a recent trip. I sent video clips to Tesla for every event. This is the second report of this defect. I have ever had and acc act this way. I am afraid I will get rear ended.

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.

Car consistently slows down to 25 mph in 60mph zone on i4 with auto-pilot enabled.