Adaptive Cruise Control problems of the 2023 Tesla Model 3 - part 2

Going down secondary road with cruise control on at 42 mph ; no auto steer just plain cruise control. The car all the sudden slams on the brakes for no reason causing the car behind to slam on brakes and almost causing a accident. This needs to be addressed or the cruise control disabled until they fix the issue.

The contact owns a 2023 Tesla Model 3. The contact stated while driving at various speeds with the cruise control activated, the vehicle experienced phantom braking. The vehicle was diagnosed by a mobile application where it was diagnosed that the firmware needed to be updated. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 4,000.

Multiple times, the vehicle braked on its own while traveling eastbound on the interstate 8 freeway between yuma, az & gila bend, az. This was when no other vehicle or obstruction was on the freeway within a mile of the vehicle. The braking was very jarring, and if another vehicle was behind us it could have easily caused a high speed rear-end collision.

While on a cross country trip and while on the highway using the Tesla auto pilot and/or adaptive cruise control, we experienced numerous phantom braking incidents. Several while driving during the day with no other vehicles around and several while passing semi trucks in the other lane. At night the same thing occurred and on one occasion, with no other vehicles around, suddenly braked from 70 mph to near stop. Had we been on a wet or icy surface, there is the possibility of control issue.

While on our first road trip in this vehicle, we engaged adaptive cruise control (acc). After about 30 minutes, the vehicle suddenly (within 1-2 seconds), and without warning, decelerated from 75 mph to under 50 mph. After re-engaging acc, exactly the same thing happened again 5 minutes or so later. Thereafter, we did not use acc, and the car ran fine. This was a safety hazard because if someone had been following us when these incidents happened, it could have resulted in a rear-end collision. We have not yet taken our vehicle to a service center. Since there was no resulting accident, we have not reported this to any authority. Clearly, however, our Tesla Model 3 has a safety problem.

While driving on a two lane highway I experience daily ghost braking incidents. While doing 75, in both cruise and autopilot mode, the car will slam on the brakes when approaching a semi in the right lane. Today it even swerved to the right without the semi moving out of its lane. I also experience panic braking if a car crosses the lanes in front of me even if it is 500m away and the crossing car even left the road before braking occurs.

When cruise control is engaged, the vehicle suddenly decelerates, (at times dropping speed by more than 20 mph in less than 2 seconds). This occurs as often as 5-10 times in a single 60mi trip, and occurs at least once per trip on this same route (divided highway, sometimes with hills, often with no other cars ahead of or around the vehicle, speed 60-70mph) these events are unsafe because unexpected braking is a hazard for following cars and my passengers. My job as a driver is to be as predictable as possible, but when I use the cruise control the car behaves unpredictability problem reported to dealer, confirmed by remote diagnostic, and car was serviced but the problem got worse. There are no warning lamps or error messages displayed in conjunction with these sudden braking events. First appeared when the car reached 2000miles on odometer.

Tesla Model 3 policy #: tla-CA-a-t-tau4lfj7 claim number: cl-64-u4lfj7-1 I hope this email finds you well. I am writing to report an incident involving my Tesla Model 3 (blue) and to initiate the process for an insurance claim. The incident occurred on September 22nd, 2023, at approximately 2:15 pm. My fiancée was the driver of the vehicle at the time of the incident. Incident details: - date: September 22nd, 2023 - time: approximately 2:15 am - vehicle: Tesla Model 3 (blue) location: the incident took place on the freeway merge from ramp 87, where it merges onto 85 southbound. Heading home. Circumstances: my fiancée was operating the vehicle in autopilot mode while maintaining her hands securely on the steering wheel. As she approached the freeway merge from ramp 87, heading onto 85 southbound, she experienced an unexpected jolt. Despite her continuous control of the steering wheel, the autopilot system seemed to be accelerating without her input. Simultaneously, my fiancée felt a sudden tire malfunction, which resulted in a significant loss of control over the vehicle. Despite her best efforts to maintain the car's position within the lane, the Tesla Model 3 veered off the freeway and entered the adjacent ravine area. Impact and airbags: upon entering the ravine area, the vehicle experienced a collision. Multiple plants/highbrush/uneven terrain as well as having to maneuver around 2 large palm trees which resulted damage to side mirror. Notably, none of the vehicle's airbags were deployed during the incident, and there were no sensor alerts, except for the tire pressure warning light. Also there wasn't any record of dashcam recording when we checked the car. We are seriously concerned that the airbags did not deploy , attached are photos concerning the damage. I would like to emphasize that my fiancée was diligently following safety guidelines and had her hands on the steering wheel while using autopilot. This incident occurred suddenly and unexpectedly.

The cruise control was set at 70 mph. The car braked itself and tried to stop itself even though I had no cars or objects in front of me. I had to apply the accelerator to get it to out of stopping itself. It happened twice in a short amount of time on that morning. The car is available for inspection. This is a safety issue as it could have caused an accident if I had someone too close behind me while driving on freeway I-75. I have not had the car inspected as this just happened yesterday 09/22/2023 and today is 09/23/2023. There was no warning prior to this happening and no issues with the car. Again this happened on 09/22/2023 for the first time. Thank you.

Cruise control set to 82mph on interstate with no cars nearby. Car slams on brakes on multiple different cruise control sessions. Dangerous for other cars that could be driving behind me and could cause me to lose control of the vehicle.

When on a recent trip from salt lake city to denver via I 15 to hwy 6 and on I 70 when it was in cruse control and also auto pilot the car would on it's own brake. Some of the time it would brake very harshly others it would not be so violet ,but would certainly be some thing that could cause a very bad accident. The only solution Tesla service would offer was to go on a test drive to see it happen. This could take posably many miles, and then said they did not have a solution.

While driving late at night at highway speeds (interstate hwy), the car applied the brakes suddenly and without cause, with no cars in the proximity of my vehicle. The car was set in cruise control mode (adaptive. ) it appeared that the vehicle may have picked up a reflection from the highway striping. This occurred two times during a single trip of approximately 200 miles.

1. When vehicle is on autopilot mode. Vehicle will all a sudden brake by itself with no reason as to why, no cars in front of me intermitly. Mostly happens when driving at highway speeds and when approaching a overpass. 2. Could be crash from the rear. 3. Have not notified Tesla. 4. No inspections have been performed 5. No warnings and no beeping either just brakes by itself intermitly.

On 09/08/2023 while the vehicle was engaged in autopilot/traffic aware cruise control and at highway speeds, the vehicle suddenly braked with no visible / reasonable cue from the surroundings. Minutes later, it suddenly braked again suddenly and without any visible cause but with more force. After this, I stopped using this feature of the vehicle for the remainder of our trip. A similar event occurred around apil 2023 and when I reported this to the Tesla service center they replaced both the right side and left side repeater cameras (faulty). The first incident of this nature occurred around a week after taking ownership in late October: again at highway speeds, the vehicle suddenly and abruptly braked without cause. The service center was notified but they found no issue with the car. This type of behavior places myself and my family at risk of being rear ended with the abrupt nature of this kind of braking (sudden, abrupt and with no cause). It also places the vehicles that happen to be following me at risk with this sudden braking behavior - the braking is not gradual. After I reported the most recent incident, the service center did not find any faults with the hardware and said that "these behaviors are a limitation of software in the system. ".

The vehicle slowed down at a very rapid rate when in cruise control for no reason. There were no other vehicles or obstructions anywhere near the vehicle. This happened 3 times. I reported these events to Tesla and they said it was a known issue called ghosting and there was nothing to repair. A rapid deceleration of the vehicle for no reason and with no warning is a safety issue that should be addressed immediately. Iv'e used cruise control on many other vehicles and have never had a problem.

While driving with the adaptive cruise control enabled, on California highway 5 on Aug 28, 2023, the vehicle applied the brakes very aggressively and suddenly, shy of making a complete stop, without any object or shadow requiring it to do so - known as the "phantom breaking". It was so dangerous that if it was a weekend with many cars behind me, I would've been violently rear-ended and perhaps not lived to report this incident. This happened twice in two hours, to the point that I have never engaged the cruise system again. The adaptive cruise control (acc) system (which is part of the auto pilot system) on this vehicle is dangerous and should be avoided. I wish the vehicle had the [old fashioned] non-adaptive cruise control but it doesn't. Answering the questions: nothing failed but the acc clearly malfunctioned since there was no object, shadow, road animal, change in asphalt color, etc. To cause it to abruptly break. It was a clear sunny day. Any accident at such highway speed could've been deadly to multiple drivers on the road. When I informed the dealer, they "verbally" acknowledged and informed me of the term "phantom breaking" that they had heard of the problem being reported by others but nothing to worry about and they didn't inspect the vehicle. There we no warning lamps, messages or symptoms prior to the problem. Again, this issue happened twice within a two hour period and I have not used the acc system again. My spouse was with me in the car in both cases and witnessed the scary situation.

When using cruise control the car will brake suddenly even when there is no obstacle in front. This happens often. The phantom braking can be dangerous if someone is following at freeway speeds and not expecting the car ahead to brake. Also, when using cruise control the windshield wipers are automatically placed on auto. The windshield wipers will then go on and off as the sunlight changes, when no precipitation is evident. We often have to pause cruise control because the windshield wipers will not stop.

While using cruise control on a highway traveling between 65 and 75 mph the brakes slammed on when there was absolutely no traffic in front of or beside us, no overhead obstructions, no upcoming corners, nothing at all but straight road ahead. If anyone had been behind us we could easily have been rear-ended. The car had only 1500 miles on it the first time it happened. There were 4 such events in our short 400 mile road trip. Took it directly to Tesla service and have been told there is nothing wrong with the car!.

The driver assistance system fails. Specifically, the cruse control, parking assistance, blind spot monitor, display of other objects, lane identification, stop sign or traffic light recognition and other safety features fail repeatedly.

The vehicle will randomly brake when cruise control is being used. No obstructions, good weather conditions and flat road.

I enabled the Tesla adapter cruise control during my trip in interstate 15. All of sudden, the car stopped to a slow speed for no reason. There was nothing in front of my car at that time. I was able to step on the brake to disable the cruise control and step on the accelerate pedal to resume the speed. Luckily there was no vehicle behind us, otherwise it might have been a rear end collision.

I was on a road trip in south dakota through I-90 and the vehicle stopped in middle of the road caused by phantom braking while running by its autopilot (7 times total). In multiple instances, there were vehicles not far behind. This is really scary as in any moment we could have been in a fatal accident on the 80mph road. Tesla needs to fix this ASAP. Not acceptable at all from a vehicle that costs this much.

The vehicle applied sudden and strong braking in clear road for no reason. It has done it on many occasions in the 2000 miles we have had the vehicle.

The adas regularly brakes suddenly for no apparent reason. There does not seem to be a consistent reason. Yesterday, during a 90 mile drive eb on the interstate in the afternoon it braked (scaring us) suddenly so often that it made cruise control more of a hazard than a help. This morning between 9-11 am, westbound on the same interstate it braked suddenly 20-30 times. This sudden braking is dangerous as unexpected behavior could cause an accident with any vehicle behind us.

We were driving on cruise control on 7/24/23 between the hours of 6am - 8am on a completely open highway with no cars near and no objects in the road. Our car braked on its own when we were driving 74-77mph bringing the car to an almost complete stop. The same thing occurred on 7/22/23 between the hours of 9am - 2pm. It was extremely scary and an obvious malfunction/ defect of the car. We both have back pain now from the sudden stop.

While driving westbound on us rt 50 in nevada with autosteer beta engaged, car repeatedly decelerated rapidly with no audible or visual warning presented. This "phantom braking" could easily put vehicles traveling behind mine at risk of a collision. I have been able to reliable reproduce this in certain conditions - when a mirage is present on the roadway ahead and there are no cars immediately in front, the visual object detection system is apparently thrown off by the refraction of light and incorrectly detects cars, pedestrians, or motorcycles where none exist. As I see it, there are two major problems in play here - one is that the camera-based object detection system is easily confused by the presence of mirages on the road surface ahead and there are no other sensors in other portions of the em spectrum (ir lidar or radar) to confirm the presence of visually detected objects. The second is the lack of audible driver warning before deceleration takes place. The only indication that occurs is the energy use indicator (a thin line at the top left of the screen) shows energy use transition to regeneration. Together, these constitute a serious safety hazard for anyone operating these vehicles and those following behind them.

The car has a tendency when I’m on rural highways to suddenly emergency brake when I have the auto pilot on.

While driving, both while using adaptive cruise control and while using "autopilot" (automatic lane centering), the car has severely emergency braked with no input from me. The conditions were bright sunlight, with mirages on the roadway in front of the car. I believe the car cannot tell the difference between these mirages and actual obstacles. The emergency braking is severe enough to potentially cause an accident, with speed rapidly dropping from 70 mph to 45mph. This is a serious defect that needs addressed ASAP.

On adaptive cruise control mode about a set speed of 70-75mph on I-5 , the car was suddenly decelerating or braking on freeway for no reason. I. E. No vehicle or obstacles was there which required braking during approx 3 occurrences happened on a same day of 200+ miles drive. It was deadly dangerous and increases risk for a nasty rear-end crash.

While I was driving along a freeway using autopilot cruise control, the car suddenly slammed its brakes even if there was no cars in front of us. I thought it was just a fluke but it happened at least twice if not thrice during that trip. There was at least an approximate of 3 miles gap between us and the car in front, so practically no cars in front. Had there any vehicles behind us, it would for sure rear ended us.

When driving in highway using autopilot, the car suddenly slammed on the brakes. This made no sense at all as there were no cars in front of it.

We have experienced several episodes of the car suddenly breaking for no reason when using cruise control. The speed is very quickly reduced a good 15 mph without warning. This is not only very alarming as drivers/passengers but it is incredibly dangerous. If there was a car following closely behind us, they would have hit us.

I was driving on a rural, two-lane highway with no other cars around and with cruise control engaged. Without warning, the car decelerated suddenly and rapidly from about 60 mph and continued to decelerate until I pressed on the accelerator pedal (at about 40 to 45 mph) to stop the deceleration. It happened at least 5 times during a drive from spring grove, IL to champaign, IL on July 7, 2023, between 10:30 am and 2:00 pm. If there had been a car following close behind me it would have been very dangerous. I had the basic autopilot engaged with traffic-aware cruise control (but not autosteer). Weather conditions were bright sunlight with a few clouds. The problem has occurred several times (at least 4 times) since then. The problem has not been reproduced or confirmed by a dealer or independent service center. I have not had the vehicle inspected by anyone. There were no warning lamps, messages, or other symptoms of the problem prior to the failures.

Scenario 1: driving mid day in hot weather in desert highway with rolling hills and cruise control activated. Upon cresting a ridge with mirages the car slams on the brakes until the mirage dissipates. Also as another car approaches and its reflection is bounced back from the mirage in the road surface the car slams on the brake until the reflection shifts or the mirage dissipates. Scenario two: driving on freeway mid day in warm weather and brightly illuminated freeway and approaching dark shadows under an overpass. The car slams on the brakes until closer to the overpass. 20-40 mph deceleration noted. The specific freeway section had a slight descending roadway leading into the shadow and then ascended on the other side so that a continuing road surface was not immediately visible beyond the shadow.

While in cruise control vehicle will brake hard as if it detects something in front but there’s really a clear road.