2021 Tesla Model 3
Problems, recalls and owner-reported issues
Forward collision avoidance is the leading concern among 663 owner complaints filed for this model year. This is the 3rd highest complaint count among 9 Model 3 model years with reports.
Of the 2021 reports, 46 involved a crash and 5 involved a fire. 19 people were injured and 8 people died.
What owners report most often
Recalls and investigations
Exterior lighting, headlightsAug 5, 2026
Tesla, Inc. (Tesla) is recalling certain 2017-2023 Model 3 and 2020-2023 Model Y vehicles. The headlight low beams may be too bright and exceed the maximum light output. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Headlight low beams that are too bright can reduce visibility for oncoming drivers, increasing the risk of a crash.
The remedy is currently under development. Owner notification letters are expected to be mailed October 3, 2026. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-17-003.
Campaign 26V507000 on NHTSA.gov
Back over prevention, softwareMay 5, 2026
Tesla, Inc. (Tesla) is recalling certain 2017, 2021-2023 Model 3, 2020-2023 Model Y, 2021-2023 Model S, and Model X vehicles operating software version 2026.8.6. The rearview camera image may be delayed when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
A delayed rearview image reduces the driver's view behind the vehicle, increasing the risk of a crash.
Tesla has released an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed July 3, 2026. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-26-00-001.
Campaign 26V283000 on NHTSA.gov
Tires, pressure monitoring and regulating systemsDec 17, 2024
Tesla, Inc. (Tesla) is recalling certain 2024 Cybertruck, 2017-2025 Model 3, and 2020-2025 Model Y vehicles. The tire pressure monitoring system (TPMS) warning light may not remain illuminated between drive cycles, failing to warn the driver of low tire pressure. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 138, "Tire Pressure Monitoring Systems."
Driving with improperly inflated tires increases the risk of a crash.
Tesla released an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed February 15, 2025. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-018.
Campaign 24V935000 on NHTSA.gov
Latches/locks/linkages, hood, latchJul 24, 2024
Tesla, Inc. (Tesla) is recalling certain 2021-2024 Model 3, Model S, Model X, and 2020-2024 Model Y vehicles. The hood latch assembly may fail to detect an unlatched hood condition after the hood has been opened.
An unlatched hood can fully open, obstructing the driver's view and increasing the risk of a crash.
Tesla has released an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed September 24, 2024. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-012.
Campaign 24V554000 on NHTSA.gov
Seat belts, front, warning light/devicesMay 28, 2024
Tesla, Inc. (Tesla) is recalling certain 2012-2024 Model S, 2015-2024 Model X, 2017-2023 Model 3, and 2020-2023 Model Y vehicles. In the event of an unbelted driver, the seat belt warning light and audible chime may not activate as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
A seat belt warning system that fails to alert occupants of an unbelted seat belt can increase the risk of injury during a crash.
Tesla will release an over-the-air (OTA) software update. Owner notification letters were mailed July 26, 2024. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-008.
Campaign 24V376000 on NHTSA.gov
Forward collision avoidance, warnings, external/pedestrian alertFeb 27, 2024
Tesla, Inc. (Tesla) is recalling certain 2013, 2018-2021 Model S, 2020-2021 Model X, 2018-2022 Model 3, and 2020-2022 Model Y vehicles. A factory reset muted the Pedestrian Warning System (PWS) sounds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 141, "Minimum Sound Requirements for Hybrid and Electric Vehicles."
Pedestrians may be unaware of an approaching vehicle if the PWS sounds are muted, increasing the risk of a crash.
Tesla released an over-the-air (OTA) software update, release 2023.44.30.14, free of charge. Owner notification letters were mailed April 27, 2024. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-006.
Campaign 24V153000 on NHTSA.gov
Electrical system, instrument cluster/panelJan 30, 2024
Tesla, Inc. (Tesla) is recalling certain 2012-2023 Model S, 2016-2024 Model X, 2017-2023 Model 3, 2019-2024 Model Y, and 2024 Cybertruck vehicles. An incorrect font size is displayed on the instrument panel for the Brake, Park, and Antilock Brake System (ABS) warning lights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 105, "Hydraulic and Electric Brake Systems" and 135, "Light Vehicle Brake Systems."
Warning lights with a smaller font size can make critical safety information on the instrument panel difficult to read, increasing the risk of a crash.
Tesla began releasing an over-the-air (OTA) software update, free of charge. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-003.
Campaign 24V051000 on NHTSA.gov
Electrical system, adas, autonomous/self driving, softwareDec 12, 2023
Tesla, Inc. (Tesla) is recalling 2012-2023 Model S, 2016-2023 Model X, 2017-2023 Model 3, and 2020-2023 Model Y vehicles equipped with all versions of Autosteer leading up to the version(s) that contains the recall remedy. In certain circumstances when Autosteer is engaged, the prominence and scope of the feature's controls may not be sufficient to prevent driver misuse of the SAE Level 2 advanced driver-assistance feature.
In certain circumstances when Autosteer is engaged, and the driver does not maintain responsibility for vehicle operation and is unprepared to intervene as necessary or fails to recognize when Autosteer is canceled or not engaged, there may be an increased risk of a crash.
Tesla will release an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed February 10, 2024. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-23-00-008.
Campaign 23V838000 on NHTSA.gov
Steering, automated/adaptive steeringFeb 15, 2023
Tesla, Inc. (Tesla) is recalling certain 2016-2023 Model S, Model X, 2017-2023 Model 3, and 2020-2023 Model Y vehicles equipped with Full Self-Driving Beta (FSD Beta) software or pending installation. The FSD Beta system may allow the vehicle to act unsafe around intersections, such as traveling straight through an intersection while in a turn-only lane, entering a stop sign-controlled intersection without coming to a complete stop, or proceeding into an intersection during a steady yellow traffic signal without due caution. In addition, the system may respond insufficiently to changes in posted speed limits or not adequately account for the driver's adjustment of the vehicle's speed to exceed posted speed limits.
FSD Beta software that allows a vehicle to exceed speed limits or travel through intersections in an unlawful or unpredictable manner increases the risk of a crash.
Tesla will release an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed April 15, 2023. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-23-00-001.
Campaign 23V085000 on NHTSA.gov
Seat belts, rear/other, anchorageOct 21, 2022
Tesla, Inc. (Tesla) is recalling certain 2017-2022 Model 3 vehicles. The second-row left seat belt buckle and second-row center seat belt anchor may have been incorrectly reassembled during vehicle service.
An incorrectly reassembled seat belt anchor can impair the performance of the seat belt during a crash, increasing the risk of injury.
Tesla Service will inspect and reassemble the seat belt anchors as necessary, free of charge. Owner notification letters were mailed December 20, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-20-004.
Campaign 22V798000 on NHTSA.gov
Visibility, power window devices and controlsSep 19, 2022
Tesla, Inc. (Tesla) is recalling certain 2017-2022 Model 3, 2020-2022 Model Y, and 2021-2022 Model S and Model X vehicles. The window automatic reversal system may not react correctly after detecting an obstruction. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 118, "Power-Operated Window Systems."
A closing window may exert excessive force by pinching a driver or passenger before retracting, increasing the risk of injury.
Tesla will perform an over-the-air (OTA) software update of the automatic window reversal system, free of charge. Owner notification letters were mailed March 31, 2032. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-00-013.
Campaign 22V702000 on NHTSA.gov
Forward collision avoidance, automatic emergency brakingMay 9, 2022
Tesla, Inc. (Tesla) is recalling certain 2020-2021 Model 3 and 2021 Model Y vehicles. The fisheye and narrow camera cable terminals were incorrectly installed in the cable harness connector, resulting in swapped camera views.
Swapped camera views can prevent the vehicle's cameras from detecting crossing objects and high-curvature lane lines, impairing the Autosteer and Automatic Emergency Braking (AEB) performance, and increasing the risk of a crash.
Tesla Service will correct the swapped terminals and recalibrate the cameras, free of charge. Owner notification letters were mailed July 8, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-17-007.
Campaign 22V317000 on NHTSA.gov
Electrical system, instrument cluster/panelApr 18, 2022
Tesla, Inc. (Tesla) is recalling certain 2018-2022 Model 3 Performance vehicles. The unit of speed (mph or km/h) may fail to display on the speedometer while in Track Mode. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 101, "Control and Displays."
The driver may not know how fast the vehicle is traveling without the mph or km/h unit display, increasing the risk of a crash.
Tesla will perform an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed June 17, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-00-008.
Campaign 22V263000 on NHTSA.gov
Electrical system, softwareApr 12, 2022
Tesla, Inc. (Tesla) is recalling certain 2020-2022 Model Y, Model X, Model S, and 2017-2022 Model 3 vehicles. The Boombox function allows sounds to be played through an external speaker while the vehicle is in motion, which may obscure the Pedestrian Warning System (PWS) sounds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 141, "Minimum Sound Requirements for Hybrid and Electric Vehicles."
Pedestrians may be unaware of an approaching vehicle if the PWS sounds are obscured, increasing the risk of a crash.
Tesla will perform an over-the-air (OTA) software update that will disable the Boombox functionality when the vehicle is in Drive, Neutral and Reverse modes, including Summon and Smart Summon, free of charge. Owner notification letters were mailed June 6, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-00-003. Note: This recall supersedes recall 22V-063. Vehicles configured with Summon or Smart Summon and already remedied under 22V-063 will need to have the new remedy software installed.
Campaign 22V235000 on NHTSA.gov
Electrical system, softwareFeb 4, 2022
Tesla, Inc. (Tesla) is recalling certain 2020-2022 Model S, Model X, Model Y, and 2017-2022 Model 3 vehicles. The Boombox function allows sounds to be played through an external speaker while the vehicle is in motion, which may obscure the Pedestrian Warning System (PWS) sounds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 141, "Minimum Sound Requirements for Hybrid and Electric Vehicles."
Pedestrians may be unaware of an approaching vehicle if the PWS sounds are obscured, increasing the risk of a crash.
Tesla will perform an over-the-air (OTA) software update that will disable the Boombox functionality when the vehicle is in Drive, Neutral and Reverse modes, free of charge. Owner notification letters are expected to be mailed April 5, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-00-003. Note: This recall has been superseded by Recall 22V-235. Tesla's number for the new recall is SB-22-00-003.
Campaign 22V063000 on NHTSA.gov
Electrical system, softwareFeb 2, 2022
Tesla, Inc. (Tesla) is recalling certain 2021-2022 Model 3, Model S, Model X, and 2020-2022 Model Y vehicles. A software error may cause a valve in the heat pump to open unintentionally and trap the refrigerant inside the evaporator, resulting in decreased defrosting performance. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 103, "Windshield Defrosting and Defogging Systems."
Decreased defrosting performance may reduce the driver's visibility, increasing the risk of a crash.
Tesla will perform an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed April 1, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-18-002.
Campaign 22V050000 on NHTSA.gov
Electrical system, softwareFeb 1, 2022
Tesla, Inc. (Tesla) is recalling certain 2021-2022 Model S and Model X, 2017-2022 Model 3, and 2020-2022 Model Y vehicles. The audible chime may not activate when the vehicle starts and the driver has not buckled their seat belt. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
The driver may be unaware that their seat belt is not fastened, increasing the risk of injury during a crash.
Tesla will perform an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed April 1, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-00-002.
Campaign 22V045000 on NHTSA.gov
Electrical system, adas, autonomous/self driving, softwareJan 27, 2022
Tesla, Inc. (Tesla) is recalling certain 2016-2022 Model S and Model X, 2017-2022 Model 3, and 2020-2022 Model Y vehicles. The "rolling stop" functionality available as part of the Full Self-Driving (Beta) software may allow the vehicle to travel through an all-way stop intersection without first coming to a stop.
Failing to stop at a stop sign can increase the risk of a crash.
Tesla will perform an over-the-air (OTA) software update that disables the "rolling stop" functionality, free of charge. Owner notification letters were mailed March 28, 2022. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-22-00-001.
Campaign 22V037000 on NHTSA.gov
Forward collision avoidance, sensing system, cameraOct 29, 2021
Tesla, Inc. (Tesla) is recalling certain 2017-2021 Model S, Model 3, Model X, and 2020-2021 Model Y vehicles operating software version 2021.36.5.2. A communication error may cause false forward-collision warning (FCW) or unexpected activation of the automatic emergency brake (AEB) system.
Unexpected activation of the AEB system may cause the car to stop suddenly, increasing the risk of a crash.
Tesla Service has released an over-the-air (OTA) software update, free of charge. The recall began October 25, 2021. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-21-00-004.
Campaign 21V846000 on NHTSA.gov
Suspension, critical fastenersOct 25, 2021
Tesla, Inc. (Tesla) is recalling certain 2020-2021 Model Y and 2019-2021 Model 3 vehicles. The front suspension lateral link fasteners may loosen, allowing the lateral link to separate from the sub-frame.
A lateral link separation could shift the wheel alignment, causing instability and increasing the risk of a crash.
Tesla Service will tighten or replace the lateral link fasteners as necessary, free of charge. Owner notification letters were mailed December 20, 2021. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-21-31-003.
Campaign 21V835000 on NHTSA.gov
Air bags, side/window, curtainOct 25, 2021
Tesla, Inc. (Tesla) is recalling certain 2020-2021, 2023 Model 3 vehicles. The left and/or right side curtain air bag may have been improperly secured to the roof rail, which could result in a twisted air bag. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 214, "Side Impact Protection" and 226, "Ejection Mitigation."
A twisted side curtain air bag may improperly deploy, increasing the risk of injury or occupant ejection during a crash.
Tesla Service will inspect and realign the left and right side curtain air bag as necessary, free of charge. Owner notification letters were mailed December 23, 2021. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-21-20-006.
Campaign 21V834000 on NHTSA.gov
Service brakes, hydraulic, foundation components, disc, caliperMay 25, 2021
Tesla, Inc. (Tesla) is recalling certain 2019-2021 Model 3 and 2020-2021 Model Y vehicles. The brake caliper bolts may be loose, allowing the brake caliper to separate and contact the wheel rim.
Contact with the rim may cause a loss of tire pressure, increasing the risk of a crash.
Tesla Service will inspect and tighten, or replace the caliper bolts as necessary, free of charge. Owner notification letters were mailed July 23, 2021. Owners may contact Tesla customer service online by visiting www.tesla.com/support/contact or by calling 1-877-79-TESLA (or 1-877-798-3752). Tesla's number for this recall is SB-21-33-002.
Campaign 21V387000 on NHTSA.gov
Representative owner complaints: forward collision avoidance
407 reports, newest first. Show all
Service brakes, Forward collision avoidance, Feb 19, 2022
Car suddenly brakes, also known as Phantom Braking, when in Cruise Control. It does it mostly on 2 lane roads, but it has done it driving on wide open freeways too. It's bad. Makes me feel very unsafe.
Vehicle speed control, Service brakes, Forward collision avoidance, Feb 19, 2022
On several occasions while driving in the highway with AutoPilot engaged for adaptive cruise control, the car has suddenly applied the brakes very hard when there were no hazards in my lane. This has occurred on curves in the road when oncoming traffic was detected in the other lane and also when there has been a vehicle stopped on the shoulder.
Forward collision avoidance, Feb 19, 2022
The Tesla model 3 has unexpectedly braked very hard with no traffic ahead of my vehicle. So fast and hard that seat belts had to restrain passengers. This has happened several times while the Autopilot is engaged. This usually is on a 2 lane road and there is traffic on the opposite side of the road. I have noticed if a semi-tractor trailer is approaching on the opposite side it happens 100 % of the time. The auto also steers hard to the right. This is very scary and a vehicles behind the Tesla have no warning either. I have almost been hit twice from behind. Makes a lot of angry drivers behind me. I have not used the feature in a month. I called Tesla and they said this was NORMAL. It never happened until a recent software update and then it started doing this all the time. Please help
Service brakes, Forward collision avoidance, Feb 18, 2022
When car is driving on autopilot on highway, it slams on the brakes on its own. This has happened 2-3 times.
Forward collision avoidance, Feb 18, 2022
This car has "Phantom braking" issue. As the autopilot was on, on the freeway, the speed was around 70 mph, it brakes without any obstacles or car in the front, just a not very even road. Speed dropped suddenly, felt like an emergency. This scared me to use autopilot. And phantom braking happened several times. When I raised this issue to Tesla dealership for repair, the answer is - "software updates constantly make autopilot better, and it is in beta and driver agree to it every time driver engage autopilot. Tesla will never force you to use autopilot and can drive normal like any other car."
Vehicle speed control, Service brakes, Forward collision avoidance, Feb 18, 2022
1) When using autosteer and/or adaptive cruise control the vehicle randomly brakes and very rapidly decelerates. This has occurred on at least a dozen drives, beginning on my first long road trip after owning the car for 2 months. 2) If another vehicle is following my car, we could very easily get into a rear-end accident. This happens at high speeds going from 75mph to 55mph in seconds, so the chance of a collision is high. I also become very scared when this happens which temporarily takes my attention away from driving. 3) No the problem has not been reproduced by a dealer. I live 150 miles from the nearest Tesla dealership. 4) No the vehicle has not been inspected. 5) No warning signs which is why this "phantom braking" is SO TERRIFYING.
Service brakes, Forward collision avoidance, Feb 18, 2022
While driving on autopilot on the highway at about 65MPH the car applied the brakes for no reason. The car descends in speed aggressively and can easily cause a rear end collision. This has happened randomly before as well.
Electrical system, Forward collision avoidance, Feb 18, 2022
The contact owns a 2021 Tesla Model 3. The contact stated that while driving at an undisclosed speed with the cruise control engaged, the vehicle would independently brake without warning. The contact stated that he saw an article that referred to the failure as “Phantom Braking”. Neither the dealer nor the manufacturer was notified of the failure. The vehicle had yet to be diagnosed or repaired. The failure mileage was approximately 2,000.
Forward collision avoidance, Feb 18, 2022
Phantom breaking. Severe application of brakes resulting in up to but not limited to 25 mph decrease of speed when semis are oncoming in other lane. Other times without any vehicles around.
Forward collision avoidance, Feb 18, 2022
I have owned my Tesla Model 3 with FSD for 9 months and have over 10000 miles of driving in the city and highway. Ghost braking has occurred on many occasions and is worse on two lane highways with commercial trucks approaching in the opposite oncoming lane. The vehicle inappropriately and suddenly decelerates from 65 mph to 40 mph. I have had to stop using FSD and adaptive cruise control because of this erratic issue. Recent trip using cruise control (not FSD) on a 4 lane divided highway (I-70 eastbound) there was no surrounding vehicles, no blind hills, obstacles or inclement weather and the vehicle went from 80 mph to 56 mph within a few seconds, requiring me to disengage the cruise control and accelerate to avoid being rear ended. The cruise control and FSD are dangerous and life threatening due to this erratic problem, please start an investigation and recall to remedy these issues before drivers and passengers are injured or killed.
Vehicle speed control, Forward collision avoidance, Feb 18, 2022
During the use of the Autopilot feature in Tesla, the car suddenly starts braking with no obstacles. This can cause a safety incident on the road when there are vehicles behind and the Tesla suddenly stops for no apparent reason.
Forward collision avoidance, Feb 18, 2022
The contact owns a 2021 Tesla Model 3. The contact stated while driving at 55 MPH with the Forward Collision Adaptive cruise control engaged, the driver was approaching a railroad overpass and the vehicle stopped independently. The cruise control was disengaged and the vehicle operated as designed. The contact stated that the failure was intermittent. The contact stated that the Adaptive Cruise Control signal recognition was not functioning as designed. The contact reached out to the manufacturer and provided an online form describing the failure. The manufacturer confirmed that the issue was a known failure and that a fix was in the process. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 50.
Service brakes, Forward collision avoidance, Feb 18, 2022
During use of the autopilot system on my trip from wilmington DE to GA and vice versa, at nurmeous times the car would automatic hard break dropping the speed by 20mph+ stating there are emergency vehicles while there wasn't any or any vehicle in front on the highway, and at various other time during the drive it would auto slow down 1-2 mph for no reason both causing unsafe driving conditions. Each day this happened over 10+ times
Vehicle speed control, Service brakes, Forward collision avoidance, Feb 18, 2022
On 2/17/22 at appx. 8:08am with adaptive cruise control engaged the collision warning alarm chimed and the car beaked quickly for 50mph to 30 mph. There was an SUV in the oncoming traffic lane. This has happened several times. The system sometimes does not recognize that approaching vehicles are in a correct lane. This happens with larger approaching vehicles such as large SUVs and trucks. Additionally we have been getting many (dozens) of dashboard error warnings that one or more of the cameras are blocked or blinded. As Tesla has chosen to delete lidar and depend solely on cameras as safety system detectors this affects Adaptive Cruise Control, Automatic Emergency Braking, Blind spot warning, Forward Collision Warning, Lane Departure Warning, Lane Keeping Assistance, and cross traffic alert.
Vehicle speed control, Forward collision avoidance, Feb 18, 2022
I've owned this vehicle since October of 2021, and wish to provide examples of my own issues concerning phantom braking while using the Autopilot/Traffic Aware Cruise Control Feature on my Model 3 Standard Range Plus. Having now put roughly 6,000 miles on the vehicle in the conditions found in western Maryland/south-central Pennsylvania, I've been able to find these consistencies concerning phantom braking: On an undivided 2-lane highway: 1. When it's a dashed line that allows for passing on long straight stretches, more phantom braking incidents occur than when the center line is double-solid. Those are usually 5-15mph braking events until the opposing vehicle has passed without incident. 2. When going down/up a gently sloping hill and the car is unable to see the lines far enough ahead because of a turn. If a vehicle is coming the opposite direction, the car appears to believe that the opposing vehicle is in your lane and coming right at your vehicle. These are usually the hardest phantom braking events. 3. When vehicles are parked parallel along the side of an undivided road, and especially at night, the car appears to think these are threats to its/my safety. I say that they appear worse at night, as when my headlights cause the rear taillights/reflectors to visually brighten, the incidents are more frequent. These vary wildly, from having no braking events to hard braking events. On a divided highway: The most consistent issues in my case happen when going up/down mountains. A highway turns into 3 lanes, with the rightmost lane for large, heavy trucks that are going slower than the rest of traffic. If you are in the middle lane, and that slow truck is using it's 4-way blinkers, Autopilot/TACC appears to see it as an emergency vehicle, and heavily brakes. I've gotten in the habit of always using the leftmost lane to avoid this issue. The trucks are clearly in another lane, well out of mine, and are moving, even if slower than the rest of traffic.
Service brakes, Forward collision avoidance, Feb 18, 2022
When the vehicle is in cruise control mode, the brakes will engage for no apparent reason. It has happened three times. The brakes will engage then release causing the car to quickly decelerate and disengage the cruise control. It has only happened on the freeway when driving, no other cars are in front or braking in front of the car. There is no apparent reason for the braking other then cruise control mistake.
Forward collision avoidance, Feb 18, 2022
The contact owns a 2021 Tesla Model 3. The contact stated that while driving at various highway speeds with the adaptive cruise control activated the braking system would erroneously activate causing the vehicle speed to suddenly be reduced. The contact indicated that the failure had occurred on multiple occasions and speed reduction was significant. The cause of the failure was not determined. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was 1,400.
Vehicle speed control, Forward collision avoidance, Feb 18, 2022
On multiple occassions, while using the adaptive cruise feature, (but not the auto steer feature) the vehicle will suddenly slow down to the speed limit, without any warning or notification that anything has changed. This happens in multiple occasions on the Long Island Expressway between exits 48 adn 32. The vehicle slows by itself for no reason at all. fb
Vehicle speed control, Forward collision avoidance, Feb 18, 2022
I owned this 2021 Tesla Model 3 for six months. On many occasions, while using the adaptive cruise control mainly on two-lane roads at various speeds between 35-55 MPH, the car would unexpectedly rapidly apply the brakes when there was no hazard present. This almost got me in a road rage situation, as the following vehicle thought that I intentionally brake-checked them. I discontinued using the system. I no longer on this vehicle, but can provide new owner’s information if needed.
Vehicle speed control, Forward collision avoidance, Feb 18, 2022
Phantom braking while using cruise control and/or auto pilot. This is most disconcerting at highway speeds especially when it sounds safety alarms most times while doing it
Forward collision avoidance, Feb 17, 2022
Phantom braking. Tesla Service asked me to record times of incidents. I drove cross country and there was an incident almost every 10 minutes. Most commonly when going over a hill or passing by a truck, the car will stomp on the brakes for no reason, causing danger to myself and other drivers.
Service brakes, Forward collision avoidance, Feb 17, 2022
While driving with cruise control engaged the vehicle will suddenly brake without reason. I have almost been rear-ended multiple times. My wife had things thrown off of seats and onto the floorboard. When I wrote to Tesla they said this can be normal and gave me excuses including lighting problems and semis too close. Frequently this happens with no one around with no lighting problems.
Service brakes, Forward collision avoidance, Feb 17, 2022
While autopilot was engaged at a speed of around 75 mph, the emergency brakes automatically engaged thought there were no impediments on the roadway. The closest car to the front was too far ahead for it to register on the screen. In another instance the same action occurred but as the car was going under an overpass. It was a sunny day so I assumed the shadows created by the overpass triggered the emergency braking. My spouse also reported two instances that this occurred to her while she was driving alone.
Vehicle speed control, Forward collision avoidance, Feb 17, 2022
My vehicle will be in Autopilot mode on a two lane highway, when suddenly it will brake very hard, so hard that I have to hit the gas to avoid a collision from the car behind me. It also does this on interstates when approaching and passing a tractor trailer. It seems to read the shadow on the road cast by the truck as an obstacle and brakes very suddenly. Taking me from 65mph to much slower in a second or two. It seems very dangerous. This has happened at least 100 times in the past few months.
Forward collision avoidance, Feb 17, 2022
Both the adaptive cruise control and the Autopilot are dangerously defective. The car will brake without any valid reason. If put into use, the phantom braking will occur several times per hour, regardless of speed. Other drivers have honked at us after nearly rear-ending at highway speeds. We have been unable to use either feature. The car has been back to the dealership in Vallejo CA. Hours of data log have been given to Tesla. We have loaded every software update including the most recent. Nothing helps. I have given Tesla a list of the situations that seem to cause the invalid braking. These include: Red & Blue markers in Nevada that mark highway cross-overs for their highway patrol. Large highway signs at the outside of a curve. K-Rail at the outside of a curve, Black tar sealant lines on the highway, Overhead Highway signs as the car is coming up a rise, and many more. We actually made a game of predicting the phantom braking and were right over 50% of the time. As it is, it is unsafe and unuseable. Pending a fix, they should at the very least give drivers the option to revert to plain, old dumb cruise control. It would be far safer. The "Autopilot" feature is even worse than the Adaptive Cruise control. It freaks out at corners with K-rail and when you do see a problem that hasn't registered with Autopilot (road hazard) the Autopilot fights you trying to take control. I almost crashed into a bumper that was on the highway.