Adaptive Cruise Control problems of the 2018 Tesla Model 3 - part 2

While driving a Tesla Model 3 on an interstate highway at a speed of about 75 mph with full self driving engaged, the car aggressively applied the brakes for no apparent reason. This action could cause injury to passengers in the vehicle or an accident involving another vehicle that is following too closely. No information about the reason this occurred was presented. Tesla is aware of this issue.

Hello, the side camera in our Tesla Model 3 have stopped working. Because they have stopped working, the gps, and the car status (360 overhead view) parts also stopped working. This means that we can't use the enhanced autopilot with the car. This is a huge issue as the side cameras and the car status are very important for safety. . Read more...

The automatic wiper does not always work. Set to auto but despite poor visibility on the windshield, it failed to start until I manually adjusted the wiper control on the screen. With poor visibility and having to look at the infotainment screen to adjust wiper while vehicle is in motion, my safety was put at risk. Every time it rains, the auto wiper is unreliable and often fails to start or is too slow to start as if there is a huge delay and does not keep up with in heavy rain as it sometimes wipes too slow and I have to look at the screen to find the settings for the wiper to manually override the wiping speed. Also, the adaptive cruse control accelerates too aggressively at stop and go traffic causing hard braking by the car and I worry this will cause rear end collisions. The blind spot side cameras are unusable at night when turn signal is on as the light blinds the camera image and can’t see anything from it, multiple visits to service center and they told me it is normal and refuse to replace but this cannot be normal as the image from the camera is blinded by the turn signal.

The contact owns a 2018 Tesla Model 3. The contact stated while driving 65 mph the contact turn on the self-drive feature, but it would not turn on and the warning message saying cruise control unavailable. The vehicle was taken to the dealer for diagnosis and the dealer stated that the computer needed to be replaced due overheating. The vehicle was not repaired. The manufacturer was contacted stated that the vehicle was not under recall and that the warranty had expired. The failure mileage was 99,000.

When driving on the highway and using the "autopilot" lane assist feature the care will automatically change the set speed limit and hard brake which puts my passengers and I in danger of being rear ended due to the abrupt stop. For example I have been driving on the highway with the autopilot set to 65mph and all of a sudden the speed will change to 35 and execute a hard braking maneuver. To compensate for this I have learned to hover my foot over the accelerator to counteract this phantom braking. When this happens there are no alerts that there is something in my path that I need to slow for. Other times there are forward avoidance alerts, but there is nothing in the path. The manufacturer has done nothing to remedy this issue.

Significant phantom braking issues on two lane highways like us95 in nv. The vision system cannot reliably tell if something is in the road or not when there clearly is nothing, cars or objects. Unclear if my 2018 if the radar is still active, but the vision software cheats I believe by using traffic in front to know the road is clear, but when there is no traffic on a rural highway, it panic stops from 70mph down to 45mph quickly before I can disengage autopilot. No shadows over the road, no tree, no over passes. Happened several times going south on us95 south on a cloudy day and several times going north a few days later on a sunny day. At all times nothing in the road. It seemed to be more confused on slight rise and downhill, but occurred in even flat road sections. I think the ai has not been trained in non-traffic rural roads and unclear if the radar is still active.

While using the traffic-aware cruise control in my Tesla Model 3, going down the highway with cruise set at 75 and no cars around, the Tesla suddenly braked unexpectedly and with no visible cause. I then googled for similar Tesla experiences and saw the gov was investigating this on 2021 and 2022 models, however my car is a 2017 or 18 and exhibited the same situation.

The contact owns a 2018 Tesla Model 3. The contact stated while driving with the adaptive cruise control set to 75 mph, the vehicle decelerated quickly to 45 mph. The contact stated no warning light was illuminated. The contact was able to drive to his destination. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had been informed of the failure. The failure mileage was approximately 80,000.

While driving on a four-lane interstate highway and using the adaptive cruise control, the car suddenly decelerated with no obvious cause. We were well behind the car in front of us -- the cruise control was set to 7 car lengths. I pressed the accelerator as soon as I could to resume speed. Fortunately, there was no vehicle close behind us, but a vehicle closely tailgating might have crashed into us.

While in cruise control: I. E. Going 70 + mph, when passing large trucks (18 wheelers) the vehicle will hard break down to 50 mph. Vehicles traveling behind don’t expect this and are barely able to stop from hitting into my back end. Only happens with large 18 wheelers, seems to be trucks that are white in color. It has happened several times previously, stopped at dealer, told nothing wrong, record if it happens again.

Car frequently brakes for no apparent reason when driving on the freeway. This happens when either adaptive cruise control only or autopilot is used. For example, it has happened on a divided highway during daytime, in good weather, with clear lane markings, with no obstructions. It also happens sometimes when certain road signs come into view, such as "caution" or "men working". There was no phantom braking problem with the car prior to 2021, when a software change was made. It is scary and dangerous for the car to slam on the brakes without any reason. I have stopped using adaptive cruise control or autopilot because of the risk of being rear-ended on the freeway.

Constant "phantom braking" occurrences despite great conditions (sunny, no wind, good visibility, low traffic) during a road trip that was two hours both ways. Typically happened when coming to the crest of small hills, or when "road mirages" due to light refraction, or when a car in the distance just became noticed by the vehicle. Happened both on divided highway and two lane highways. Several braking occurrences were pronounced enough to be likened to not quite slamming on the brakes, but definitely applying them firmly. This, besides being terrifying and attention grabbing, itself a safety issue, it could also mean close following vehicles may have to react in such a way to also apply brakes heavily at highway speeds which could cause a rear end collision or swerving to avoid my vehicle. I also get little to no warning it's about to happen, until it does, no alarms go off, and in general it was noticing the hills, mirages, and vehicles just coming into the car's "sight" that the correlation of the phantom braking was occurring. I know this is known by Tesla, and I am going to take it in for a winter tire swap this week, and let the dealer know it is a major issue with my car.

Very recently Tesla had a standard software update for the car. They happen all the time. There was no warning with this update (or any update I’ve seen) about removing paid for features if you install the update. This one disabled my radar and turned my radar based autopilot I specifically bought this car for into vision based autopilot. I paid $15k for full self driving and never requested the beta to use it because I specifically did not want to disable my radar because of safety concerns. They did it anyway now, and without warning. It phantom brakes now all the time and it never used to and the general autopilot performance is worse and unsafe. I can’t use it reliably anymore and Tesla refuses to downgrade the firmware or do anything to re-enable my radar and I’m absolutely livid. This is a $75k car that I got for this one feature and they took its functionality away from me without warning and won’t give it back. Vision based autopilot is not safe and I am afraid anytime I use it now. Radar based autopilot felt so safe it was relaxing much of the time.

As I enabled the fsd beta adas system, the vehicle accelerated inappropriately quickly away from a 90 degree stop. While continuing on the road, the vehicle braked inappropriately for oncoming cars within their lane, inappropriately braked within intersections, inappropriately braked for turn radius, and was unable to avoid a closed road marked with signs and cones. Steering input was erratic, and I believe the vehicle created an unsafe condition for myself and the vehicle following me. There were no aeb or fcw alerts, the system did not display any error messages, and appeared to be operating fully.

On sept. 9th, around 9:05pm, my wife was on the driver's seat, fsd was engaged. So the Tesla Model 3 car was driving itself on highway 395 close to susanville. Then suddenly a car coming, we had a head-on collision, the other car's front left hit our front left. The other driver passed away, my wife and I got serious injuries, we are recovering from 3 surgeries. 1. Fsd did not give alert or warning, 2. Fsd did not break the car, 3. Fsd did not slowing down the car 4. Fsd did not change direction of the car. 5. Fsd just kept the speed and direction. “disabling fsd” needs time, my wife did nothing, because there was only few 10th of a second. But I am afraid if she was driving without engaging fsd, she might be able to steer the car slightly to the right to avoid the accident. Chp will pull data from the car in the next few days. We would like to request NHTSA has a full investigation of the accident. Attached please find a form we received from chp, a picture of both cars, and driving data downloaded from Tesla web site.

During use of full self drive vehicle brakes unexpectedly. Sometimes vehicle studder brakes and other times hard brakes. This has caused a concern with drivers following me as well as passengers I'm my car. Also on a two lane road with double yellow while stopped in traffic, vehicle attempts to exit lane to pass stopped vehicle, in essence breaking the law.

On a recent trip from northern califorina to southern California, I experienced 5 episodes of phantom braking, that involved my brakes being applied at 75 miles per hour when no other vechiles were around me. This also happened 3 days later 4 times when traveling from southern California to my home in northern California. All incidents happened on hwy I--5 I have contacted Tesla service and they tell me nothing is wrong after checking vehicle logs. I believe this is a known issue, that is why I am reporting it. My first trip was Sep 1st and second trip was sept 4th in all incidents adaptive cruise control was engaged.

Driving down the freeway with autopilot engaged and the autopilot started hard braking in the middle of the road going 70mph. No accidents occurred but it was a very dangerous situation.

Traffic aware cruise control (tacc) frequently and sometimes violently brakes when there are no obstacles. This potentially puts the safety of myself, passengers, and other drivers at risk during these events. This events occur without warning. Since the purchase of my vehicle in 2018 the events have gotten worse through software updates. I would expect improvements through subsequent updates not a regression.

Phantom braking that causes the vehicle to suddenly apply the brakes for no reason. Issue occurs at least once each time I use the autopilot. Occurs on interstates as well as highways. In my 6 hour drive today it happened 5 times. Each time the vehicle decreases in speed by 15-30mph. This is extremely dangerous for vehicles following behind and for the passengers who are suddenly jolted.

I have noticed unwarranted braking while using cruise control. I have been able to confirm at least some of it is due reconstruction of the highway. At certain places the car thinks I am on an exit ramp with a 45mph limit when I am actually on the main highway. It then suddenly slows the car until I correct it using the accelerator.

This summer while driving on interstate highways the adaptive cruise control (with and without all other driver assistance/autopilot features enabled or disabled) would unexpectedly brake the car, slowing down by 10 or more mph over 1-2 seconds, with no obstructions or vehicles in front of the car for hundreds of meters at least. This happened repeatedly, and we believe we correlated it to cases when the car came up over a low rise or bridge, and there was bright sun creating a small mirage in the distance on the highway in front of the car without any other vehicle in between to block the view. This seems to be a safety issue because at highway speeds, unexpected braking is very disruptive and startling to the driver, the passengers as well as anyone following behind who may not react in time especially on a clear sunny day with no obvious obstructions to take extra care of. * component: adaptive cruise control (with or without other autopilot adas features) * safety: braking at highway speeds is disruptive to traffic and can cause accident (rear-ending, startling driver) * reproduced: problem has not been reproduced by the vendor and I don't see any way to report it to the vendor * inspection: the components have not been inspected by others to my knowledge, this is based on software produced by or licensed by Tesla * warnings: no warnings were produced before or during the event, just . 5g or so (not measured) of braking unexpectedly.

The car brakes by it and accelerates by it. Some time it says I am not holding the steering wheel and it cancels the autopilot in the middle of the long distance driving. The defective cabin camera does not see the hand position at all and randomly keeps on distracting from the front road view to the screen which is not in the same line as the road. Too many errors of auto pilot are very frustrating and distracting. The Tesla’s team tries to repair something and keeps on blaming their own departments not to fix things correctly. I have tried many times to make an appointment thru their app which is very buggy and it’s like one way communication. I have multiple recalls on my car but they don’t have time or parts to fix it. They will not allow making any weekend or within 20 mile radius service center. Once they do any repair their technician drops the ball and do not want to fix the original problem correctly. The full self driving is ridiculous I have not been able to complete even 10 miles trip without taking over in few minutes. This fsd software/hardware needs to be more accurate as soon as possible so that there is no harm done to the driver and passenger to the Tesla and other cars.

Driving today on i45 between dallas and houston on beta autopilot I was traveling at the speed limit of 75 with much room to the next car, maybe 1/2 mile the car suddenly did a panic breaking for no reason. I took control by the time it was at about 30 mph and got back up. To speed but I'm positive the car behind me was alarmed. No damage or incident but it was quite alarming.

Going down an undivided single lane each way roadway at 55 mph car suddenly hard braked and car behind me almost hit me. Most of these I don't report since it's normal for Tesla fsd or adaptive cruise to be incapable of maintaining reasonable speed for a day trip - this was worse than usual and almost resulted in an accident.

Cruise control was engaged at 70mph. Auto without warning while traveling suddenly started severe braking. Driver was only guiding steering at the time ( foot did not touch brake). The dual lane highway was level and straight. There were no other vehicles in sight. The skys were overcast so there were no shadows. There were no overpasses. I have had this happen several times when autopilot is engaged but never when just cruise control activated. Sudden braking like this at high speeds could cause a vehicle following this auto to rear end that could cause the loss of control of this vehicle that would cause a life threatening event to occur.

The recent full self driving update that was received approximately one week ago has resulted numerous, substantial, and dangerous self driving errors. The vehicle struggles greatly to understand lanes and has on multiple occasions suddenly and without warning jerked the wheel to completely change lanes and then re-jerking the wheel to change back into the original lane. There has also been a shocking increase in phantom breaking while driving at highway speeds which is unsafe because other nearby drivers may slam on the brakes. The behavior of the vehicle has a times been so erratic that I could’ve gotten a ticket from an officer. Finally, the vehicle increasingly does not understand lanes and has several times veered into a left turn lane despite having a follow vehicle and despite being on a navigational straight path, subsequently the vehicle then suddenly jerks the wheel back into the correct lane. This all happens very quickly and is not preventable by the driver even when hands are on the wheel and the driver is fully alert. I love my Tesla car. It is the safest car in the world. However, I feel very strongly that the company has been negligent and has definitely not been safety testing updates appropriately before wide release. I strongly recommend that guidelines be put in place to require Tesla to publicly report the number of fsd disengagement‘s every week. I also feel strongly that Tesla needs to permit drivers to roll back software to a prior version of full self driving. In addition, in order to send a video directly to Tesla regarding self driving errors the driver presses a video icon; however, this prevents the driver from storing the video and sends the video directly to Tesla. Therefore, drivers have to make a decision between documenting the dangerous error for themselves or to contribute to fleet learning. Each time videos pressed video must be saved to the usb drive too.

Nhtsa forced Tesla fsdbeta to remove “rolling stop” behavior at clear intersections. This has caused me to be continually honked at, drivers aggressively passing my slow fsdbeta car. The decision by the NHTSA has caused my car to be more unsafe by impeding proper traffic flows. Nhtsa should be focused on improving safety and not traffic law enforcement. This complaint is directed at the improper decision and solely on the NHTSA to lift the guidance to Tesla. As a customer I now feel my car is unsafe to drive due to your decision.

When driving on local roads and the interstate the card suddenly brakes for no reason when using auto pilot or full self driving. Sometimes it seems to be triggered by shadows from trees or other objects on the road and other times for no reason at all. I have been going 45 mph and the car suddenly braked to 30mph. I have been on the open interstate doing 70 mph when the car will suddenly and violently brake when there is a car on your bumper and this is very dangerous. If you dont keep your foot over the gas while driving and force the car to speed up it will cause an accident bc it will brake until the car is stopped probably. Somone needs to look into Tesla and the phantom braking on auto pilot and full self driving. I have owned this car for almost 4 years and over the last 1 year this has gotten progressivley worse when they switched from using the radar sensor in the front to camera only vision called Tesla vision. It is unsafe and im sure it's causing accidents today and needs to be investigated since Tesla cant seem to fix it.

Multiple instances of phantom braking and slow down while driving on traffic aware cruise control (tacc) and/or autosteer mode of the autopilot feature. In addition, the lane keeping assistance feature gives phantom warnings even though the car stays in the lane.

The optional "self driving option" we purchased for an additional $8,000 when we purchased this vehicle has never worked properly. The adaptive cruise control will brake for no reason, often multiple times per mile. It seems to be affected by shadows on the road and the vehicle mistakes these shadows for obstacles. The "self driving option" will abruptly jerk the steering wheel in the direction of oncoming traffic and violently disengage. My wife and I find it to be unusable. Multiple service requests to Tesla have resulted in no actions.

On June 1, 2022, we left on a roadtrip to CA from ut. Our Model 3 kept having incidents of "phantom braking," in which the traffic-aware cruise control and autopilot systems would suddenly, inexplicably cause the car to slam on the brakes, and sometimes even flash a "red" steering wheel and an alarm with a warning that there was an object ahead —when there was not! this happened at least a dozen times en route on highway 95 in nevada, and continued to happen throughout our roadtrip on other highways until we returned home one week later on June 8, 2022. I have experienced this problem several times over the past year, and numerous other owners have already submitted similar complaints to NHTSA. Indeed, the tacc and ap behaviors are now significantly worse than when we first took delivery of the car over 4 years ago in April 2018. It is as though the car suffers hiccups, spasms, tourette's syndrome without any warning. I fear that one of these times we will be rear ended by a car behind or to the side of us. I can only speculate as to why this has started to happen, but suspect it is because Tesla decided to stop using its radar sensors a year ago and now only relies on its cameras. These incidents truly frighten my wife to death, so much so that she wants me to get rid of the car. I can't say I blame her, as the problems with the car's tacc and ap systems are now making it unsafe on our highways. If Tesla doesn't restore reliable, dependable, safe tacc and ap in the near future, I will get rid of the car.

Driving while on cruise control, the car will phantom brake. That is, it will apply the brakes: - when a vehicle is way way out there in my lane and not a potential problem. - when two vehicle are close on each left and right side lanes, but not in my lane. For instance, when on 3 lane road with all lanes going the same way, vehicles on my left and right sides out in front of me but not in front of me, the car will suddenly apply the brakes. These are just the most common instances. I get lots on incidents of the vehicle unnecessarily applying the brakes when on cruise control.

Car slammed on brakes as we were overtaking truck. Car may have mistaken truck's shadow for an object; this was around noon on a clear sunny day. Braking was sharp enough to cause an accident had someone been following us closely.

Autopilot hard breaks whip lash randomly beeps saying take over when going through an intersection or next to a semi. Phantom breaking.