2021 TESLA MODEL 3 Forward Collision Avoidance Automatic Emergency Braking Problems

Hello, Driving on a snowy road around 20 MPH. Attempted to slow down in a straight line, used the brakes to try and slow vehicle to go into a driveway. Vehicle would not respond to any inputs. The brake pedal seemed frozen, coming off and back on the brake pedal did not change anything. There sounded like an ABS pulsing but it was not working. Post accident pictures showed it looked like the car was dragging one axle like it was locked in the snow. Car ending up grazing a mailbox post and afterword said 'take control'. I believe the car tried to do an automated braking maneuver which did not work. The road was covered in 1-2" of snow and the mailbox would have been a reference point in the distance. When turning the steering wheel away from the object that was hit, the car continued to go straight...

Purchased my Model 3 in August 2021. Autopilot and cruise control features worked flawlessly for the first few months of ownership. In September of 2021 after a software update, the vehicle started to perform unsafe reactions while on autopilot or cruise control. If any large vehicle like a semi-truck or vans were traveling in the opposite direction of travel on any two lane road, cruise control or autopilot will slam on the breaks and activate the forward collision warning tones. Reactions like this from driver assist technology could easily result in a multi-car accident. While commuting on a busy road (10 miles) on cruise control/autopilot, this issue could occur over 10 times on one drive. While making contact with Tesla service in September, a representative said that Tesla's autopilot software team was aware of the issue affecting Model 3's similar to my VIN. The representative ensured that the team was...

On *multiple occasions* when driving on a highway and using cruise control, the car has suddenly and severly decelerated. Tesla advises that for my vehicle the safety system to detect possible collisions is still in the "BETA phase" and has initially been programmed to be over-sensitive. Tesla claims that as software updates are made, this issue will improve. [See uploaded screenshot of text chat I had with Tesla service on 1/19/21.] I have an appointmnet to take the vehicle in, but Tesla says I must be able to give then exact dates and times of occurrences or otherwise there is too much code on the vehicle's computer log for their systemt to be able to analyze. (I am able to give them some dates but not exact times.) My fear and concern in the meantime is that such unpredictable deceleration events when traveling at highway speeds could result in a...

Multiple random automatic braking occurred during Freeway cruising

Several times during every drive where Cruise Control/Autopilot is used, an event known as "Phantom Braking" occurs often time triggering the collision warning systems with no danger present. Phantom breaking is the automatic braking of the Cruise Control/Autopilot systems when no danger is present, causing an unexpected and dangerous automatic braking event. I wish to emphasize that this happens when either system is used under safe conditions and even within the guidelines recommended by Tesla. It is available for inspection should it be necessary. During these events, a vehicle following mine can and has been caught off-guard by the sudden braking, resulting in near-miss rear-endings. The danger of a vehicle collision is extremely high in these scenarios. The problem happens consistently on two-lane roads with no median using standard cruise control (Autopilot is only recommended on divided highways/interstates). Phantom braking still occurs at random in varied environments with both systems....

Phantom braking events on most every type of road and drive when using cruise control, not autopilot or other automated systems. Standard cruise control is unusable and is a safety concern with constant warning alerts and automatic emergency braking when other vehicles pass by safely in the adjacent lane.

Constant “phantom braking” when using autopilot on the freeway and other roads. When the pavement changes color, the car slams on the brakes in the middle of the freeway. When a truck is in the opposing lane, the car slams on the brakes. When a truck is merging into a lane to my right on the freeway, the car slams on the brakes. This is extremely unsafe and frightening. This software is garbage and worse than my 6 year old Subaru. Tesla needs to address this, and I hope they’re eventually forced to.

We continue to have issues with Tesla's autopilot feature. The Model 3 with autopilot activated or just with the adaptive cruise control activated, will "phantom" brake for zero reason. Today, 12/14/2021, it happened three times within 90 minutes. All three times there was no reason for the car to make emergency actions. Once I had a truck with a trailer behind me, forcing them to brake hard to avoid hitting the rear of the car. I submitted a service request to Tesla and this is what they told me: Incidents like the one you are describing where the vehicle slowdowns for apparently no reason are generally caused by a few reason such as: Map data inaccuracy, Speed limit data inaccuracies, the vehicle reacting to an upcoming event, GPS position inaccuracies, and predicative driving anomalies. In all of these situations the computer is trying to make the safest determination of what...

On a daily basis while using the Adaptive Cruise Control or Tesla Autopilot, I will experience multiple erroneous automatic braking events. The car generally slams the brakes on when it is cresting a hill, attempting to pass a semi truck, or when sun angles produce large shadows in the road. The automatic braking events are sometimes very aggressive and can be extremely dangerous, especially if someone is following behind you in high speed traffic. My wife has requested that I don’t use cruise control or autopilot while she’s in the car, as we experienced an unwarranted, aggressive automatic braking episode which caused great pressure against her pregnant belly on a previous road trip. Additionally, the cameras on my vehicle will often produce warning/error messages stating “X camera is blocked or blinded” for absolutely no reason other than headlights from oncoming traffic shining into my lane. I am unsure if this...

My Tesla Model 3 is brand new and delivered in 2021, the vehicle has had no recalls or issues report by the manufacture and is running the latest software updates provided by Tesla, which as of this date is: 2021.36.8 I have driven the car since delivery a total of 5,596 miles, which includes a cross country road trip from CA to FL. During this trip I used "Autopilot" a feature which is touted as safe, however after my experience and reading and hearing other users reports I believe this is not the case. I had numerous cases of "phantom braking" which is where the vehicle believes there is an object that it will collide with and it slams the brakes on, usually dropping around ~20 MPH extremely rapidly. Many of these events occurred in lower light scenarios (night time) and almost all of them occurred when I had no...

ADAS systems detect oncoming traffic from the opposing lane on single lane roads and sounds forward collision alarm. If using adaptive cruise control or Autopilot, vehicle will rapidly decelerate. This poses a risk to the occupants and vehicles behind from unexpected changes in speed, which could cause a rear-end accident. The issue can be repeated in the scenario described above. Forward Collision Warning alarm goes off when it sees a oncoming vehicle far off in the distance.

Tesla cars are having an issue with phantom breaking which is causing the car to slow down or even slam on the brakes for zero reason. Since I have zero control of how close someone follows me, this is a huge safety issue and makes me fear for my life every time it happens. I drove 60 miles today on two lane roads and this happened at least 6 times. Seems to happen more on two lane roads that aren't flat, but I've had it happen other times too.

My new Tesla 3 deployed automatic emergency braking seven (7) times in a 5 hour period. The Tesla Autopilot was turned off due to reports of phantom braking like this from many other drivers in a Tesla online forum. Regardless, the car slammed on the brakes when there were no obstructions or cars in front of me. I almost suffered a rear end collision during one of these phantom emergency braking events, where the car suddenly braked from 70MPH to less than 40MPH. The malfunctioning component is likely the Tesla software that works with the forward-facing cameras which are installed as part of the Full Self Driving feature. While I did not pay the $10,000 for FSD, this system still operates for automated braking and lane departure. I have requested Tesla inspect the car, which has 482 miles on it, but am filing with you anyway due to the similarity...

Terrible phantom braking. On a road trip, flat straight open roads, little to no traffic in front of me, and consistent full on hard braking from 75mph down to 35mph in a split second. Multiple times and so consistent I had to stop using the cruise control completely. This never happened like this in my day to day city driving. But as is, the cruise control is nerve wracking and dangerous. Thankfully no cars behind me because it could very easily cause a serious and deadly accident.

Traffic Aware Cruise Control in the 2021 Model 3 is down right dangerous. Constant random braking for no reason at all. Happens multiple times if I use TACC on 2 lane roads. Happens nearly every time I use TACC on a 4 lane road. If I have traffic behind me I cannot use TACC at all for fear I would be rear ended.

While driving on C-470 westbound going 70 MPH with the car on Autopilot, the car braked hard dropping the speed to 40 MPH. If a car would have been behind me, they would have hit the back of my car. This issue is happening frequently, from neighborhood side streets, city streets, and on the interstate highway.

I have been experiencing very frequent adaptive cruise control breaking for no reason. It is getting worse with every software update. It seems like the car is very scared of oncoming traffic and will hit the breaks or slow down for no reason. Sometimes there will be no traffic at all and it happens. If a car is following closely I’m afraid I will be hit. I wish I could turn off adaptive cruise control but there is no option. This is a serious safety issue.

I was using auto pilot. The road was pretty empty single lane road. There was no car in front of me or coming in opposite direction. The car automatically slammed the brake pretty hard. We were lucky enough no one rear ended us. Looks like a software bug in Tesla. Please investigate. I will never ever again use this [XXX] auto pilot and risk my family life. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

When driving using the traffic aware cruise control, the vehicle experiences frequent abrupt and random rapid deceleration. This causes a safety issue when other vehicles are behind due to the rapid change in speed. Occasionally the vehicle will produce a forward collision warning with nothing in the path of the vehicle. This makes the cruise control function less usable and no option to disable the adaptive function.

Car hits the brakes and activates the emergency braking and forward collision warning very frequently (10+ instances during a 1 hr drive) in instances that absolutely do not warrant it (no obstacles or cars in the lane of traffic). Product is unsafe in the condition that it is in, and car offers no way to revert to standard cruise control. This type of automatic behavior could cause accidents.

When I use cruise control, the car will brake suddenly sometimes very fast or moderate braking. There is no reason for the car to break. It happens on 2 lane roads and 4 plus lanes. I can not determine if tree shadows cause it. It often breaks when a car is coming from the opposite direction on a curve. It also breaks during the night on a 2 lane road when a car comes from the opposite direction. Sometimes it has freaked so hard that if anything is on the seat, it is thrown toward the floor. I fear I could be hit from behind due to unnecessary braking, so I will only use cruise control if there is little or no traffic on on roads with 4 or more lanes.

I noticed you have a recall for SOME Teslas about a glitch with the auto braking after latest Beta FSD rollout. My Tesla has had this since day one, and I don't have or use FSD. I do use the adaptive cruise control, and that is when I have problems with my car slamming on the brakes for no reason. I have been lucky, 3 times I have ALMOST, been rear-ended. I have had it in the shop a couple times for the issue, and they tell me to read the manual and the car is fine. I have talked with 5 other Tesla owners, and they have all had the problem of their car slamming on the brakes for no REAL reason. I think the GLITCH is a bigger problem than Tesla is willing to admit, and applies to most Tesla cars. there are even website forums about, "Phantom...

System erroneously sounded forward collision warnings about once per minute. Automatic Emergency braking faulted and could not be enabled. Firmware version 2021.36.5.2

The vehicle will suddenly brake with no discernible obstacles when advanced cruise control is engaged. We experienced multiple “phantom braking” events during an 800+ mile road trip (round trip) last week, which was so frequent and unpredictable that autopilot and autosteer (Tesla’s terms) are unsafe to use. The first half of our trip was on two-lane highways and the car would brake heavily on clear roads and triggered two emergency accident avoidance events when large pickups were approaching in the opposite lane (screen showed a vehicle in red in our lane, audible alarms + heavy braking). The braking was so sudden that we were almost rear ended twice. We chose a different route to return home on a divided interstate, hoping that the TACC system would work. It did not. The car would brake dramatically when we went over a small rise, there was a vehicle in our lane at...

Automatic cruise control (autopilot) has twice failed to decrease speed when it should have. The vehicle will also brake at a moderate to high rate on the highway with zero warning or message, with no obstacle or vehicle on the road, creating a dangerous situation with following vehicles. ACC also requires the use of automatic wipers and automatic high beams, both of which activate at random times and thus encourage their disuse (e.g. sunny clear day, or with obvious traffic in front of the vehicle, respectively). Automatic high beams turning on and flashing when they shouldn't is unsafe for other drivers. Finally, the use automatic wipers and high beams is not listed as a requirement for active safety features such as FCW and AEB to function. However, these two critical safety systems rely on the same camera array and systems with problematic functionality described above. It's hard to believe that...