2020 Tesla Model 3 Complaint Log

While driving at highway speed, the vehicle's automatic emergency braking unexpectedly activated, without cause or warning, which caused a very rapid deceleration of the vehicle. Fortunately, the traffic on the highway was light and no other vehicles were around, but this "phantom braking" had the potential for a major collision. This is the first time this has happened on this vehicle. The vehicle has not been inspected by the manufacturer and there were no prior warnings.

Sporadically when driving at highway speeds, car will experience an error. Steering assist IMMEDIATELY decreases (wheel harder to turn), cruise control (if enabled) will disengage, and following Error codes appear on flatscreen : - Vehicle Hold Feature Unavailable - Tire Pressure Monitor System Fault - Automatic Emergency Braking Disabled - ABS (Anti-lock brakes) disabled - Regenerative Brakes Disabled - Steering assist reduced - Traction control disabled Unsure of which component is at fault. Tesla Service center (Norfolk VA) has pushed off appointment for more than 30 days but has acknowledged that there is an issue. SAFETY: Loss of ABS is a major safety risk to occupants. Loss of steering assist also puts driver and others at risk due to increased steering effort. Loss loss of regenerative braking also a safety risk due to the instantaneous change of vehicle braking behavior when regenerative braking switches off.

The upper control arm on my vehicle creaks and it is a known issue amongst the Tesla model 3 owners. This creak can eventually wear to the point the ball joint will separate during driving. This is a safety issue that can cause an accident. Tesla denied the warranty repair due to some after market parts. This is not a valid reason to deny me warranty because this issue is prominent in all cars of this model and year regardless of aftermarket parts or not. Currently the issue is present at low speeds. Tesla applied a "patch" to keep water from getting into their poorly designed ball joint. Unfortunately by the time they got to this repair for my vehicle it was too late. And water had gotten in and caused the damage and now it is a safety concern.

This report is filed to support NHTSA Investigation #PE24031. The four vehicles listed on the SGOs were manufactured when Tesla referred to the ADAS hardware suite as Hardware 3.0 (HW3). This March 2022 video recorded an incident facing into the sun in a 2020 Tesla Model 3 with HW3 installed. Tesla's ADAS is engaged and operating on FSD Beta V10.10.2 firmware. A video sensor reacts to bright sun and shade by raising and lowering its sensitivity, which may compromise exposure if it occurs once. In a series of pulsed, high-contrast lighting changes, the exposure may be less than optimal during much of the transient. The depth and duration of the exposure error will vary by the sensor's make and model. Next, See: [XXX] ) Only the video is relevant. The rear-facing camera view on the Tesla's display shows the shadow cast directly behind the vehicle, confirming direct alignment. At 0:51, the car enters a bridge section where cross-members cast shadows onto the windshield-mounted cameras, causing a pulsed lighting effect. If a video automatic gain adjustment (AGC) step is in the signal path downstream of the sensor, it may react adversely to the pulsed input. The signal path latency, processing time, and the attack and release settings of the AGC delay the output, making it out of sync with the sensor's direct output. Note: At 0:57, the driver requests a speed adjustment as the ADAS emerges from the strobed lighting. At 1:50, the visualization displays the VRUs as facing into the vehicle's path and the ultrasonics returning pings off the metal barrier to the right. Other: Social media reports indicate that interior condensation in front of the front-facing cameras can be resolved using the standard front-screen defrosting feature. There have been accounts of the interior glass becoming hazy or cloudy, and DIY YouTube videos show how to remove the camera pod and sensors to clean that specific glass area. Example: [XXX] ). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Tesla Model 3. The contact stated while driving approximately 20 MPH, there was a loud sound coming from the vehicle. There was a warning message to take control of the vehicle displayed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The contact related the failure to NHTSA Campaign Number: 22V063000 (Electrical System, Forward Collision Avoidance). The approximate failure mileage was 9,800.

My Tesla Model 3 is equipped with standard auto pilot (no full-self driving) and traffic aware cruise control (TACC or otherwise known as adaptive cruise control). While engaged, I experience, on average, per 60-mile trip a minimum of 1 phantom braking event. Note this is not on residential, county or state roads, this is on divided highways. The vehicle will slam on the brakes for no reason and will at times activate the forward collision warning system. It's so bad I've disabled many of the safety systems for fear I will cause an accident. Traffic aware cruise control on a two lane road (this does not steer or lane center the vehicle), is unusable because it constantly brakes for oncoming traffic in other lanes, or aggressively brakes for vehicles turning in front of you, even with plenty of distance to clear. The system will even continue to brake, after the turning vehicle has fully cleared the road. This requires the driver to slam the accelerator to cancel the braking action. When I first purchased the vehicle in February of 2020, there were no issues with Phantom braking. This issue has become worse with over-the-air updates. I canceled my full-self driving subscription because the phantom braking was even worse with that software. Additionally, Tesla uses a driver safety score to determine insurance rates if you are using their branded insurance program. When these phantom braking events occur it sometimes registers as an emergency braking event which deducts from your overall score and can ultimately cause your rates to increase. When I enrolled in FSD, before Tesla would release the software, they required a certain safety score over a week's time. During that time the system falsely reported running red lights, emergency braking events, and aggressive stopping, while only using the regenerative braking system. They system will also flag you for tailgating with auto pilot engaged.

The Tesla rear facing repeater cameras show the driver's blind spot when changing lanes. The cameras are also used during automatic lane changes when the car is in drive-assisted (FSD) mode on the highway and in city (FSD Beta). The cameras have a manufacturer defect. At night, light from the turn signal led is blinding a large part of the vision field of these cameras. This renders the blind spot vision for the driver but also the computer assisted automatic lane changes for the car partially obstructed. Tesla has acknowledged this defect by redesigning the rear facing cameras so the blinding is remedied. Tesla is refusing to fix this issue under warranty and requires owners to pay for this safety fix. Tesla's statement on this issue: "Hi Stephan! The blind spot camera performance on your vehicle is neither a defect of materials nor workmanship. It is a characteristic of the product. And it's a characteristic that has been design enhanced in newer vehicle production. If you wish to upgrade to newer camera technology, you have an option to purchase the upgraded cameras and have them installed." I am having my cameras replaced, and will pay for it. I believe Tesla should, however, seeing how this is driver safety related even if they are unwilling to acknowledge this.

Phantom breaking on my car, just like everyone else. In autopilot on the highway my car will break pretty hard when there is nothing in front of it. Seems to occur when approaching bridges and large signs. If I drive on the highway every day, it will happen to some degree at least once a drive. At least once this nearly caused an accident (I was almost rear ended because my car braked for no reason)

The car braked from 65 mph to 35 mph with no obstructing traffic, the car has done similar things on many occasions however. On the occasion of the most recent occurrence, I noticed that the car indicated a change in the posted maximum speed for that location from 65 mph (normal highway speed) to 35 mph, at which time it began slowing to the erroneous 35 mph limit. There was no reason for the change in speed, as there was no posting, construction or traffic.

In numerous instances since the vehicle was purchased in December 2019 and with all software versions to date, the vehicle has suddenly and with no warning or reason rapidly and forcefully applied the brakes while adaptive cruise control was set. This has happened on four lane interstates at speeds between 65 and 78mph and on two lane highways in both day and night. The "phantom braking" is worst on two lane highways and makes the use of cruise control at night on a two lane highway nearly impossible to use due to the frequency of occurrences. This braking has nearly caused accidents and has resulted in my wife's neck aching due to the unexpected and forceful application of the brakes.

Phantom braking can occur when vehicles are passing at night and during the day for no reason. There is no adequate control to enable the windshield wipers. Many menus to access the wiper controls. Not safe

I have had too many phantom braking incidents to count, it has happened hundreds of times since I bought the car. Most incidents were mild slowdowns (3-10 mph) on some two lane roads through interstate and but some were quite quite violent, 20 mph or more slowdowns in a second or two. For example, using only adaptive cruise control or with autopilot also engaged and no other vehicles nearby, the car suddenly slammed on the brakes before I was able to step on the pedal and stop the deceleration. If there had been a truck behind me following close, it would have rear ended me. This sort of instance happens regularly, at least once or twice a week. Mild slow downs, as noted above, happen a handful of times most every time I drive the car. It happens when roads are empty or full, and slow downs also occur even when lines in the road are clear, there is no traffic. It also can occur when I am cresting a hill or making a blind turn

My car has experienced phantom braking for no apparent reason when on cruise control or auto pilot. Tesla claims to have to looked at the cars programming remotely and found no problem. I took the car to a Tesla dealer for a seat belt recall and asked them to also repair the phantom breaking. Again they said that they found nothing wrong with the car.

The contact owns a 2020 Tesla Model 3. The contact stated while driving 45 MPH and turning left, the vehicle experienced “Phantom Braking). There was no warning light illuminated. The vehicle was not taken to be diagnosed or repaired. Neither the dealer nor the manufacturer had been notified of the failure. The approximate failure mileage was 12,000

During regular driving at highway speeds, and using Adaptive Cruise control and auto steer feature, The car would suddenly brake substantially for no reason. There was no object or anything that In the road. If there was a car traveling behind me closely a sever accident could have happened. This has happened on more than 10 occasions since owning the car in 2020 new from Manufacturer.

The vehicle's side cameras (those near the wheels) have a defect that lets internal light shine through 3 holes in the PCB of the camera. Since the side cameras are mounted in the same assembly as the side blinkers, whenever the blinkers are on (hazards or turn signal), the side cameras become almost unusable either by the driver or, seemingly, by the car's computer to give any blind spot warning. Result: blind spot warning / automatic lane change is not working as expected when in total darkness and turn signal / hazard is on. When asked for a repair under warranty, Tesla refuses, saying that this is not a defect.

Countless times, while driving on a two lane highway at speeds from 45-70 mph while on adaptive cruise control, the car unexpectedly braked when a vehicle was in the oncoming lane. This became so much of a problem that I needed to keep my foot on the accelerator if there was a car or truck in the other lane. It was dangerous because a car following me could have run into me or I could have skidded on ice. This has been happening for about a week. I think it is called phantom braking.

Car will brake without any warning and with not reason to brake. Many complaints I’ve read online call this phantom braking. It has happened over ten times now and can be extremely dangerous as it will brake the car almost instantly and I have almost been rear ended because of it. Only matter of time before this happens and it results in a wreck.

Tesla model 3 has side repeater cameras that work as blind spot monitor cameras and provide visuals for safe lane changes. However, my model 3 suffers from a manufacturing defect in the camera assembly which causes the visuals to wash out at night due to light bleed from the turn signal. This caused an unsafe condition where i almost ran into a car in my blindspot being unable to see them on the camera visual. I raised the issue with service and they do not consider it a manufacturing defect. The defect however has been confirmed by independent researchers like here https://www.youtube.com/watch?v=_BUPsjguqdY

There is a complete failure of the Autopilot (cruise control) feature and sudden braking when using. There is an extreme risk to personal safety when using this feature. On several occasions, I have been using this feature on the highway while going the posted speed limit of 65 or 70 mph. Suddenly, the vehicle will decelerate aggressively and violently causing any vehicles behind me to slam on their brakes to avoid a collision. This feature of the vehicle is not recognizing road signs, or other inanimate objects, correctly and mistakes them for some hazard that requires braking. Very dangerous.

Car decides to apply brakes for no reason

The car suddenly brakes when the accommodative cruise control or full automatic driving is engaged. This happens at random times when driving on the highway. The braking is sudden and severe requiring driver intervention. Only happens with cruise control or full auto. Has happened several times since the car was purchased.

Vehicle approached an upward slope which triggered a forward collision warning and (unsafe) emergency braking.

On Tuesday 2/1/2022 approximately 9:20am EST, as I was sitting in a stop-and-go traffic, as the traffic was freeing up and started moving going roughly 5 to 10 mph, the vehicle automatically applied phantom brake - with a notification of emergency braking applied. I was not on cruse control or autopilot. i was in full control of the car yet it suddenly applied the ebrakes nearly causing someone to rear end me since the traffic had started moving.

automatic braking happens for no reason. Happened multiple times on freeway .

There are two problems: (1) braking and (2) windshield wiper operation. (1) Braking: When driving on a highway and going by an on-ramp on the right side, without any warning, the vehicle would, al of a sudden, slam violently on the brakes, even though the cars entering the highway are nowhere near where I would be driving. This has happened repeatedly to me, creating a hazard of a rear-end collision. The Tesla Model 3 in such cases would already be in a mode that would drive itself (by me having clicked on the right stalk twice). Additionally, the car often misreads a traffic sign for a different part of the road, such as a stop sign for a side road. The violent braking would take place in such a scenario also. (2) Windshield wiper operation: I'm not sure if this would qualify as a safety issue, but the windshield wiper operation doesn't work in automatic mode. I rely on this while driving in a rainy or snowy day so that I can concentrate on the driving itself without worrying about something else to do (turning on the windshield wipers). This is problem that has plagued the car right from the beginning, and to me, it presents a safety hazard. For example, about a week ago, I drove in bad weather (snowy) on a turnpike to get to a medical appointment. The weather turned bad, and cars would pass me by, splashing water/snow onto the car's windshield. The automatic mechanism should have kicked in to help me focus on the driving, but it did not.

Vehicle was driving on concrete-divided highway around 70 MPH. An ambulance with flashing lights came around a bend on the OPPOSITE side of the highway from the vehicle. Vehicle began to unnecessarily slow upon detecting the flashing lights.

Tesla is putting passengers at risk by how much they are changing their user interface. They are moving critical safety around which makes the car more un-usable and drivers more confused and distracted. Here are some of the features they changed in their software update that creates danger to drivers: 1. Front seat heater settings are no longer on the home screen 2. Front/rear window defog buttons are no longer on the home screen 3. User profiles are no longer on the home screen. This controls the seat, mirrors, and temperature. Instead they have made non-safety features forefront: 1. Theater mode 2. Arcade Please view this forum of hundreds/thousands of people complaining about how their safety is put at risk by this update: https://teslamotorsclub.com/tmc/threads/v11-software-update-sucks.251711/

Emergency braking kicks in at times when there's an oncoming vehicle in the opposite lane. It happens on straight roads in normal traffic when the oncoming vehicle is maintaining it's lane. The car will suddenly slam on the brakes when there's no chance of a collision. Afraid of getting rear ended, I avoid using the cruise control and "autopilot" due to this erratic behavior.

On to different occasions while vehicle was in Enhanced Autopilot the car braked hard for no apparent reason. If another car had been close behind it might have hit me. Problem has not been confirmed by a service center or the dealer, nor has the vehicle been inspected by anyone. The described actions happened in a construction area on highway I-25, both northbound and southbound. Problem appears to occur at off ramps.

I read this morning that there have been complaints about the automatic emergency braking engaging when it shouldn't and I would like to add my car to the list. I've had my Tesla a little over two years and turned off the feature about a year ago because it would hit engage the emergency braking when there was no reason to. After a software update a month ago Tesla reactivated the feature without my permission and the only reason I knew it was activated is because the brakes slammed while I was on the freeway. The forward collision warning also activates often when there is no threat of collision of near by. The details below are an approximation of the last time the emergency braking engaged but this happened probably 4-5 other times during the year I had it activated.

There was a recent software update and Tesla rearranged items on the touchscreen. Passenger was trying to pair his phone with the vehicle, and touched his name as displayed on the screen. This caused the driver seat to slide back quickly to fit the pre-set for his height. He is considerably taller than the driver, and this caused the driver to be unable to reach the brake pedal or accelerator. Therefore, the driver had almost no control of the vehicle. This occurred on a quiet side street going uphill, so driver could steer the vehicle to the curb which caused it to stop, even though she could not reach the brake pedal. However, if this had happened on a busy street or highway, there would have been a terrible accident. Remedy is simple. It should NOT be possible to activate the driver side seat position pre-sets when the vehicle is moving.

This is a general complaint: The new control panel user interface V11 is unsafe. It now promotes/requires distracted driving to use. The previous version was a bit busy, but most all needed controls were on the screen or one touch away. With V11, one must now navigate menus to get to hidden controls that were on the home screen requiring too much attention to the screen while driving. This is what I am finding. I fear accidents will result.

Tesla pushed an update (v. 2021.44.25.2) to my Model 3 a couple of days ago that has dramatically altered the usability of the car, and potentially has safety implications. There was no warning prior to the update being applied that such changes to the car's user interface were included, nor is there any option to revert to the prior user interface. Major issues with the changes are outlined below: - 1-button, single-click shortcuts to seat heating, defrost/defog functionality have been removed; when driving in bad weather where the screen may fog up rapidly, you're now required to take your eyes off the road, and click twice on a small target on the touch screen to activate the required functionality. - 1-button, single-click access to the wipers has been removed, now requiring one to either rely on the auto-sensing functionality (which works properly about half the time), or click through the HVAC menu to adjust the wiper speed. - The quick access driver profile selection dropdown in the previous interface has been removed. My spouse and I differ significantly in height, and about half the time, the car selects the wrong profile when we're both getting into the car (despite our phone keys being linked to our specific profiles). With the earlier UI, it took one tap on the screen to switch to the correct profile. Now, I have to dig through menus to select the correct profile, while my knees are being slowly ground into the steering column/dash. - When driving, the speedometer, gear selection and navigation look significantly different than in the earlier UI. This is likely to lead to more distracted driving while we get used to the new interface. I filed a service request with Tesla, requesting that they revert our car back to the prior version of the interface; this request was denied and the appointment was automatically canceled with a generic message about firmware updates being rolled out on a schedule.

Tesla issues an update to software that forces drivers to go through a jumble of menus to do important tasks like turning on defrosters and windshield wipers. These used to be one touch items on the home screen, but now require drivers to take their eyes off the road for a dangerous amount of time.

The contact owns a 2020 Tesla Model 3. The contact stated while driving 30 MPH, he heard an abnormal noise. The contact stated no warning light was illuminated. The contact continued to drive to his destination. The contact stated he parked the vehicle, he noticed that a large section of the front passenger’s side rim was missing. The contact filed a complaint on the Tesla application and made them aware of the failure. The contact purchased the front passenger side rim from the Tesla website. The contact took the vehicle to an independent mechanic and had the front passenger’s side rim replaced. The contact stated that the vehicle was still driving to the right. The vehicle was repaired. The contact attempted to reach the manufacturer but was unable to speak to a representative. The failure mileage was approximately 28,500.

After the OTA software updated to 2021.44.25.2 there were several changes to the graphic user interface and software system. Two direct issues of the update are: 1) The rear and side cameras that assist during backup now take longer to activate and have very jumpy (laggy) video feeds. So much so that the driver can backup at least 10 feet at low speed before an updated image is shown. This causes a very unsafe condition when backup up as there are multiple blind spots in the car. 2) The simplification of touchscreen controls requires the driver to be more distracted by having to navigate additional menus to turn on wipers, climate control, the radio, and safety features like the dashcam. Waiting on an appointment with Tesla but that is at least 20 days away.

Recall 21V-00D is well over a year old and Tesla has not remedied it in a timely manner.

I was trying to avoid a car parked on the side of highway on my right going between 45 to 55 miles an hour and slightly steered the car to the left, and the car swerved back and forth at the slightest steering wheel movement as if skidding in the snow. The road was dry (no rain) but the steering was not stable and the car ended up hitting a truck on the left. It caused a very serious accident and we are lucky that there was just a major car damage and no one was hurt. The steering seems to be uncontrollable and loose, and causes major swerving if one has to steer away at a high speed.

Using either cruise control or Full Self Driving mode, driving on divided highway, experienced sudden hard braking not due to any highway obstruction, road hazard, other vehicle, or weather. Without warning car dropped out of assisted control and abruptly applied brakes. This happened yesterday at 2:10 pm, 2:53 pm and 3:01 pm.

I recently brought my car in for routine servicing and informed the Tesla service technician that I’ve been experiencing significant lag with the rear (reverse) camera video feed since roughly early-December 2021. The rear (reverse) camera lag makes reversing hazardous, as any reliance by the driver on the the rear (reverse) camera feed can cause serious (potentially fatal) injury and/or property damage. I asked the technician to look into and address the issue; I told him I was aware there had been a recall and that I received a notice. He informed that they were unable to replicate the issue—which I find hard to believe, given it happens constantly—and that rear (reverse) camera lag is common in Model 3s as they age. My car is less than two years old—hardly classifying as “aged”. In looking at Internet forums, this appears to be a very common issue with Model 3s, and one that has yet to be resolved by the manufacturer through either hardware or software update(s).

The contact owns a 2020 Tesla Model 3. The contact stated that while driving at an undisclosed speed on the highway, the vehicle was experiencing phantom braking. The contact stated that the failure reoccurred while driving at various speeds with the cruise control or while using the autonomous self-driving feature. The contact stated that the battery warning light was illuminated. The vehicle was not taken to an independent mechanic or local dealer to be diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.

The contact owns a 2020 Tesla Model 3. The contact stated that while driving on the right side of the road at 35-45 MPH, on autopilot mode with a passenger in the front passenger seat, the vehicle drove off the road independently and crashed into a tree. The air bags failed to deploy. There were no warning lights illuminated. The contact's face hit the steering wheel. The contact sustained a black eye with laceration, bruised ribs, head, neck and back pain, sprained left ankle, bruises on her thigh, may have sustained nerve damage on the right side of the face that hit the steering wheel and sciatic nerve damage on the right side of her body. The occupant of the front passenger seat sustained neck, back and clavicle injuries. The contact sought medical assistance the next day. The vehicle was towed to a tow lot, then it was towed to a Tesla certified specialist body shop. A police report was filed. The contact has not been able to get a hold of the manufacturer. The vehicle was not diagnosed or repaired. The failure mileage was 55,000.

late November of 2021, sunny weather, dry pavement. I was driving with Auto pilot (auto aware cruise control) on a 2-lane highway in rural MN. No traffic, I came upon a shadow cast by trees across the highway and the car suddenly braked. Later that same day, I was driving on a 4-lane expressway in a rural area—again with CC on. I was approaching an overpass that cast a shadow onto the roadway and the car suddenly braked. In both cases the car did not come to a complete stop but significant reduction in speed. Luckily in both cases no one was following close behind me. I have no interest in FSD and don’t agree with it as our highway/roadway infrastructure is a long way off from being ready. However, cruise control should be solid and I am now wary of using it and am tense under same conditions—I can’t rely on it. Tesla (Elon Musk) made a bad directive to have this system rely on cameras only. This system should also have LiDAR or at least radar. I informed Tesla of this issue. They acknowledged receipt of the complaint but never offered what they would do about it. Phantom braking is a big issue and FSD ought to be outlawed until infrastructure, vehicles and drivers are ready for it. For the life of me, I don’t understand why anyone would want FSD. Anyway, the issue with my car is not with FSD. Thanks

Driving on Autopilot on a city street at 35 MPH speed limit, while passing next to a UPS truck parked on the right side of the street at the curb, but slightly protruding outside the parking lane, due to its size, my car sideswiped the parked UPS truck, causing scratches on my car and totally obliterating my passenger side mirror. My vehicle did not stop or try to veer away from the parked UPS truck, causing at a minimum $700 damage to my vehicle.

There is A LOT of phantom braking, not just on specific stretches of highway around Austin, but almost anywhere. There is a specific spot on US Highway 183 north in Austin where the speed is set at 65 and the Tesla M3 will rapidly brake without any warning. There is a danger of being rear ended. I manually disconnect the ADAS in anticipation. I shouldn’t have to. In general, phantom braking is dangerous and could be attributed to using vision only sensors?

https://youtu.be/_vSGyqX0HZg My car is constantly running red lights when on "Full Self-Driving". They claim that it should stop at red lights but it very often confused the left turn red for the green in the straight lane. The car randomly serves at other traffic for no apparent reason. The car randomly slams on the brakes super hard for no apparent reason. Full Self-Driving is UNSAFE

The contact owns a 2020 Tesla Model 3. The contact received notifications of NHTSA Campaign Number: 21V00D000 (Electrical System, Back Over Prevention, Visibility) and 22V702000 (Visibility) however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Aero shield on the model 3 collapses when driving through a puddle of water. Tesla said they fixed the issue. I was charged for the service to do it which was $250.that was in June 2021x And now again today October 2021, the same thing happened and they said that won’t be covered under warranty

The lane departure assistance in my car was malfunctioning. Yes it is available for inspection if you would like. Today I.e. 10/25/2021, I was driving manually on Interstate 5. The car wasn’t on autopilot or cruise control. I was trying to merge into right lane and had my right turn signal on and made sure there was no one in my blind spot. As I was merging there was a warning signal and message displayed on the screen that read something like- lane departing corrective steering applied. The car was trying to pull me back into the lane I was departing from and it was applying sudden brakes to slow me down. I had to apply lot of force to the steering wheel to pull the car into the lane I was trying to merge. It was rush hour traffic and the cars around me were going pretty fast. It was a really dangerous situation and there could have been a big collision if I didn’t apply that force to bring the car into the right lane. There were no warning signs leading up to what happened today. But there was some malfunctioning in my car previously when the car just stopped without any warning on the ramp to my driveway. It’s a steep ramp and the car stopped all of a sudden and would not move. I contacted Tesla service about this and no action was taken whatsoever. I am really concerned about the safety of myself and the drivers around me not knowing what kind of bugs are going to come up in the future. Please take some action to make Tesla responsible for this.