2020 Tesla Model Y: adaptive cruise control problems

Filed Dec 30, 2024 · Acceleration, Driver assistance · IL

On drives longer than 40 miles, camera faults cause cruise control systems to degrade in function and then when the faults are cleared, full functionality resumes without driver alerts. Side repeater camera feeds and rear camera feeds inconsistently load, or take an extended time period to load (10+ seconds). Tesla has confirmed that the autopilot computer (HW3) likely needs to be replaced, but this error/messaging is not directly accessible to the customer. The inconsistent failure behavior of the vehicle could easily lead less technical owners/drivers to incorrectly interpret how the car is behaving. The only message you receive while driving could be that 'cruise control is not available', and 'automatic emergency braking unavailable' with a message that the features may be restored later in the drive. My coworker has a 2022 Model Y and the same component failed on his vehicle and needed to be replaced under an extended warranty that was purchased from Tesla. I'm unsure how widespread the failure of this critical safety system is; we both purchased FSD and both had the same component fail and need replaced. I don't personally know others who own this vehicle with the FSD package to know for sure.

Filed Sep 23, 2024 · Airbags, Seat belts · CA

I am reporting a recurring Safety Restraint System Fault error in my 2020 Tesla Model Y. The issue manifests as an alert on the vehicle's dashboard, warning of a problem with the safety restraint system. This error began appearing at approximately 75000 miles. What component or system failed or malfunctioned, and is it available for inspection upon request? The Safety Restraint System in my Tesla Model Y is giving errors. Yes, the component is still installed in the vehicle and is available for inspection upon request. How was your safety or the safety of others put at risk? This malfunction affects critical safety features, including the airbag system and seatbelt functionality, potentially preventing proper deployment of airbags in an accident. Additionally, when the fault occurs, it disables key driving safety features like Autopilot and cruise control, which increases the risk of accidents, particularly in scenarios where these features are expected to function. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the problem has been reproduced and confirmed by Tesla. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? Inspection by tesla is scheduled Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? Yes, the "Front Passenger Safety Restraint System Fault" warning appeared on the vehicle's display prior.

Filed Feb 29, 2024 · Driver assistance · MD

I am writing to formally file a complaint against Tesla, Inc. concerning a significant issue that has arisen following a software update issued to Model Y and Model 3 vehicles in early December. I am a Tesla Model Y owner, and following this update, I have experienced complete failure of critical vehicle systems including cameras, navigation, lane departure warnings, auto braking, forward collision warning, adaptive cruise control, windshield wipers, self-driving features, and car location data. The malfunction of these essential features not only compromises the safety and functionality of the vehicle but also indicates a severe underlying problem with the vehicle's computer system. The cost to replace the affected computer in my vehicle amounted to $2,400. However, upon reviewing discussions on Tesla forums, I have discovered that this is not an isolated incident; numerous other owners are facing similar failures, with some repair bills exceeding $3,000. Given the widespread nature of these issues and their chronological association with the December software update, there appears to be a high correlation between the update and the catastrophic failure of the vehicle computers. The financial burden of these repairs has unjustly fallen on consumers, although it is my belief that Tesla should be held accountable for these failures, given the direct link to their software update. I urge the federal safety agency to investigate this matter thoroughly. It is critical to ascertain whether the December software update directly caused the failures of the vehicle's computer systems and to ensure that Tesla takes appropriate responsibility for the safety and reliability of their vehicles. This includes compensating owners for the costs incurred due to these failures and implementing measures to prevent such incidents in the future. Thank you for your attention to this serious matter.

Filed Jan 24, 2024 · Driver assistance · TX

Failure of all cameras, gps, and lane keeping system. It is available for inspection. It occurred after software update was pushed to the car. Tesla service has seen the vehicle and says that the internal computer has a fault and needs to be replaced. Yet, oddly enough, there are a lot of identical failures reported in Tesla owner forums. Around the same time as my failure in mid-December 2023. No prior indication of computer failure occurred. And the computer is still operational for items not related to the cameras and GPS. Safety concerns: The rear windshield has limited visibility, which is not an issue when the cameras are functioning. The safety notification when changing lanes does not work without the cameras and sensors. The lane keeping and adaptive cruise control do not work without the cameras and sensors. Tesla should investigate if a software update they sent over the air created the problem with cameras and lane keeping assist.

Filed Oct 3, 2023 · Driver assistance · CO

I was driving with cruise control on and the car violently hit the brakes when there was no one in front of us. We have noticed this is more common when cresting a hill. This happens at least once every time we are on a road trip. This needs to be addressed. We know we are not the only person having these issues with the Tesla and the “phantom braking”

Filed Sep 28, 2023 · Driver assistance · CA

Driving on Highway 80, west of Elko, NV. No obstructions on the road, no cars within 5 miles, no animals or birds on the highway. The vehicle aggressively brakes. It did this 4 times with the assisted driving engaged and 1 with cruise control engaged.

Filed Sep 3, 2023 · Driver assistance · NM

On a round trip from Albuquerque, NM to Tucson, AZ, we experienced 8-10 instances of phantom braking in our 2020 Tesla Long-Range Model Y. The occurrences happened when the car was in adaptive cruise control and lane keeping assistance. Highway speed was typically 75 MPH, weather was sunny, and roads were clear. Overall, an unnerving experience!

Filed Aug 30, 2023 · Acceleration, Brakes · OR

While driving in cruise control mode, not auto steer, and with no vehicle in or obvious obstruction in front, the brakes will be applied without warning (phantom braking). It has happened multiple time in the years of ownership. It has happened once or twice with a vehicle following resulting in near rear-end collision. In one case this resulted in the follower reacting with "road rage," passing with horns blaring and braking in front of my vehicle. I have this recent incident on video as it just requires me to honk the horn and the last 5-10 minutes of driving is recorded.

Filed Aug 21, 2023 · Brakes, Steering · CA

I purchased our Tesla model Y 3 years ago. I intentionally disabled and did not subscribe to any autonomous driving features because I don’t trust them. I disabled all aspects of auto pilot functions. Despite this, my car still will automatically swerve at random times, slam on the brakes randomly with no reason to break, etc. It is terrifying when this happens unexpectedly and infuriating that I have disabled all these features, but it still does this. This is most common when I put it in cruise control. Rarely these will happen when, for example you cross a double yellow line, but most of the time they happen when nothing has occurred to prompt them. I believe this is an unsafe feature, and needs to be investigated. Unfortunately, with Tesla they have no customer service so there’s nobody that I can report this to.

Filed Jun 21, 2023 · Driver assistance, Transmission · MI

While driving at highway speeds, the car unintentionally went into neutral. The setup: The driver was on the highway with cruise control on. Upon turning cruise control off to prepare for entering an exit ramp, the car also went neutral. We lost power and the regenerative braking that you expect in this car. The center console stated something like “Please shift into drive or reverse”. The cause is that Tesla uses an up movement on the right hand gear stalk to cancel auto pilot, cancel cruise control, and to put the car into neutral. If that up movement is too long, the car will inadvertently go into neutral regardless of car speed. We reported this to Tesla and they suggested all model 3s and Ys do this. Some light searching online showed this happening to others too. This feels dangerous at highway speeds. And the point at which you are turning cruise control off could be a critical phase of driving and feels like a unsafe time for the car to loose power.

Filed Jun 20, 2023 · Acceleration, Driver assistance · CO

While driving at highway speeds (50mph-80mph), on 2 lane or 4 lane highways, in the day or night, in sunny conditions and overcast sky's, while using the cruise control (auto-pilot), the car will suddenly and unexpectedly apply the brakes. It happens between 8 and 10 times on every road trip, each way. Not only is it a shock to me as there is never a visual obstacle that seems to be causing the hard braking, but it is a dangerous safety issue to other motorists too. This has caused cars behind me to take evasive maneuvers to avoid a collision. Other motorists have mistaken this hard braking as me "Brake-Checking" them and very nearly cause a road-rage incident. I've had the car for about a year and have opened several service appointments with Tesla. Each time they close the case before the service appointment with a version of the reply "this is normal" and "there is nothing to repair". They also claim that the car will learn how the react next time by my reaction to the incident this time. I have reacted the same way (by pushing the accelerator pedal until it regains forward motion) each time this has happened in the 8-10 times on each of the 6-8 road trips I've made in the last year. Clearly, the car isn't learning anything from my reaction to the sudden and unexpected braking. My safety is worth my time to make them take this seriously as they don't seem to be concerned with my safety!

Filed Jun 15, 2023 · Brakes, Driver assistance · MN

On the last road trip, my car emergently braked for no reason when using cruise control and autopilot causing safety issues for cars behind my vehicle. This happened at least 6 times on my 500-mile round trip. I reached out to Tesla service and was told there is no fix at this time. in my opinion this is a dangerous problem that needs addressing in an urgent manner.