2021 Tesla Model 3: headlights failing or too dim

Filed Jun 12, 2026 · Acceleration, Brakes · TX

The forward-facing camera and Autopilot computer system on my 2021 Tesla Model 3 has failed. The dashboard first showed intermittent warnings that "Automatic Emergency Braking is currently unavailable" and "Adaptive headlight features are unavailable." Over several weeks the problem worsened from intermittent to constant, and the vehicle progressively lost its forward road visualization and all active safety features. Using the vehicle's Service Mode diagnostics, the Autopilot computer's Primary (A) processing node reports a "CRITICAL" status. The fault log records repeated alerts including dasMIA (driver-assistance system not responding), aebFault (automatic emergency braking fault), and fisheyeCamInitFault and fisheyeCameraStreamExit (forward camera initialization and stream failures). The cameras themselves are physically clean and unobstructed. Safety risk: the failure disables Automatic Emergency Braking and forward collision avoidance, lane-keeping/driver assistance, and the adaptive auto high-beam headlights. AEB is a critical crash-avoidance system; losing it leaves the vehicle unable to brake automatically for an imminent collision, and the loss of adaptive headlights reduces nighttime visibility. A Tesla service center inspected the vehicle, confirmed the diagnosis, and determined the Autopilot computer — a sealed, solid-state control unit — had failed and required full replacement at approximately $3,400. The vehicle is well under 50,000 miles. This failure appears consistent with the same car-computer power-component shorting failure for which Tesla issued a recall on its newer model-year vehicles. The vehicle and the failed component are available for inspection on request. The vehicle has not been inspected by police or insurance.

Filed Nov 9, 2022 · Driver assistance, Lights · AR

The Tesla uses “auto high beam” when in autopilot. The pros of this can allow drivers to utilize the light so the cameras can detect anything to avoid any possible wrecks, but it does not have an option to be turned off. Along with other people online, my brights have flashed at people on the interstate and highways or haven’t turned off at all. This is irritating and limits the way I am comfortable with using autopilot. Please inform Tesla to make the auto high beam feature OPTIONAL.

Filed Jun 30, 2022 · Driver assistance, Lights · VT

Car brakes while using adaptive speed control. In one incident the car was traveling at 71 miles per hour and braked to 25 mph. In other situations the car braked by at least 5 mph, on some situations this happened while speed control was engaged and I was traveling at 50 mph or less. In all these situations, there was not another vehicle in front of me that posed an immediate threat of collision. The adaptive self dimming headlights do not work properly while driving at night. Lights do not always dim for approaching vehicles or when approaching another vehicle from behind. On some occasions the bright lights engage when approaching other vehicles OR dim when not approaching another vehicle. Other times the light repeatedly switch from bright to dim when following other vehicles. I reported these issues to TESLA. The response was that their engineers are aware of the problenms and it is related to a firmware update and that will be coming. I worry about being struck from behind when the brake suddenly engages. I also worry that the headlight situation can cause a crash by blinding drivers.

Filed May 20, 2022 · Electrical, Lights · OR

https://youtube.com/channel/UCNkrwnR_lAKd4neLwYAbugA My YouTube channel has 13 videos about Tesla safety concerns. They are the only videos on my channel. The minutes long clips show what happens when the mainframe screen goes black, dies out or powers down while driving. Listed from memory are the following concerns associated with the Tesla ‘Black Screen of Death’: 1. No energy/distance shown 2. Glove box is inaccessible 3. Front trunk ‘Frunk’ cannot be opened 4. Proof of signalling is gone 5. Proof of low vs high beam is gone 6. Changing of wiper speed is gone 7. Access to heating/Air-Con is gone 8. Back up camera is obsolete 9. Cameras used when signalling are missing 10. Speedometer is not visible 11. Odometer is missing (have never found it on screen when running anyways!) 12 Air pressure indication is gone 13 GPS is obsolete From memory that is all I have to add. Imagine everything that was/is available to the driver in every other cars dashboard and then take those parts away sporadically for minutes at a time and you’ll have an understanding of how precarious driving my Tesla can be. As an Uber driver I had the opportunity to speak with a corporate agent who was my passenger. She said Tesla is aware of this issue. Having spoken with a Tesla rep at a Tesla garage I was given the same advice found on Internet forums: “Find a place to park, park, press the steering volume & station finder buttons for 10 seconds until display starts up” This very rarely works, and is impossible, even dangerous in many situations. I’ve learned to drive with this continually faltering equipment, and I know every Tesla driver I’ve spoken with must do the same to varying degrees. While all Tesla drivers experience this, none are as repetitive as mine and none seem as proactive to inform government agency of this. Next week, May 26, I have an appt with a Tesla garage that will look into this when I bring my car in. Please view my videos.

Filed Mar 23, 2022 · Lights · NH

The passenger side headlight has stopped functioning on repeated occasions, both the high and low beams stop functioning simultaneously each time. I have been on long distance road trips now each time that this has occurred. Tesla service techs insist that it's software related in both instances and provide a software update. This alleviates the problem temporarily. I am currently insisting that they replace the unit completely, as these are not standard headlights that a consumer is able to purchase and replace at a parts retailer or any auto service center. Today, I got another service update, no replacement yet. The inherent danger in this practice is the amount of days and weeks required to schedule a service appointment, while operating the vehicle with one headlight and a complete inability to source an alternative resolution.

Filed Mar 22, 2022 · Lights · MO

The model 3 no longer turns on the headlights automatically when the windshield wipers are on. It requires the operator to search through menus to turn the lights on manually. This is required even if the headlights are in automatic mode. Voice Command doesn't turn the headlights on either. I believe it is dangerous to be diverting eyes to a menu screen to turn the headlights on while driving in the rain. In addition, failure to turn on the headlights in my state is a moving violation.

Filed Feb 26, 2022 · Driver assistance, Visibility · OH

Tesla offers a blind spot camera, standard on the vehicle, which activates automatically when the turn-signal is active on the appropriate side. The blind-spot camera feed appears on the center screen. The feed comes from each of the side cameras mounted to the external portion of the car. Since the side turn-signal is mounted right above the same blind-spot cameras, the light from the turn-signal often 'bleeds' into the camera feed used by the driver to determine if the appropriate lane is clear. At night, this causes the blind-spot camera video difficult to view since the video feed alternates between 'normal' video and a bright, flushed out video, matching the turn-signal timer. The end result is often times I, the driver having difficulty observing cars on the side of my vehicle at night. More specifically, several times I have missed the headlights of cars in the lane next to me because the turn signal light, bleeding into the camera feed, obscure or hides the car and/or headlights (since they driver's eyes have to chateaubriand adjust between a bright andrark video feed flashing). This causes me to start merging into a lane which I believe is clear, only to have to quickly swerve back into my original lane when I realize the lane is not clear. Both the driver in the new lane and myself are put at risk, unnecessarily when this occurs. I have reached out to the manufacturer for this complaint. In writing, they have admitted this is a problem and even though my car is only 10 months into a 4 year warranty, they will only fix this safety issue if I pay for a replacement part. This seems unacceptable to me to force customers to pay for a safety fix. The failed component is available for inspection. I have sample video available to demonstrate the problem. There are no warning lights for any components. The manufacturer does not need to inspect the component since they already know, and admit to the shortcomings, per my written conversation with them.

Filed Feb 20, 2022 · Acceleration, Driver assistance · TX

I currently drive a 2021 Tesla model 3. When I drive this car down two lane highways my cruise control is almost un usable not to mention auto pilot. Almost every time a larger vehicle, something like a Semi truck comes from the other direction in the opposite lane my car slams the brakes. At night time it’s even worse when headlights are in the distance my car slams the brakes and when the headlights are closer it slams the brakes again. It also has random phantom breaking. I tried the service department and the told me it was a software issue and there was nothing they could do. The technician told me it would improve if I purchased FSD. I don’t believe it, if basic cruise control doesn’t work how is FSD going to work. I don’t know who to contact or even what to do about this issue, the service department refuses to even look at my car.

Filed Feb 18, 2022 · Acceleration, Driver assistance · PA

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.

Filed Feb 3, 2022 · Acceleration, Brakes · FL

1. Vehicle brakes for no reason while on Traffic Aware Cruise Control 2. At night on come head lights appear to cause braking while on Traffic Aware Cruise Control. 3. Vehicle brakes for no reason when on Traffic Aware Cruise Control when on two lane road (one lane each direction) when on coming large vehicle approaching. 4. Vehicle brakes for no apparent reason while on Traffic Aware Cruise Control when light conditions cause high contrast shadows on the road.

Filed Dec 10, 2021 · Driver assistance · NM

On a daily basis while using the Adaptive Cruise Control or Tesla Autopilot, I will experience multiple erroneous automatic braking events. The car generally slams the brakes on when it is cresting a hill, attempting to pass a semi truck, or when sun angles produce large shadows in the road. The automatic braking events are sometimes very aggressive and can be extremely dangerous, especially if someone is following behind you in high speed traffic. My wife has requested that I don’t use cruise control or autopilot while she’s in the car, as we experienced an unwarranted, aggressive automatic braking episode which caused great pressure against her pregnant belly on a previous road trip. Additionally, the cameras on my vehicle will often produce warning/error messages stating “X camera is blocked or blinded” for absolutely no reason other than headlights from oncoming traffic shining into my lane. I am unsure if this contributes to the automatic braking issue.

Filed Dec 7, 2021 · Visibility · NJ

Windshield has highly visible internal reflections resulting in vertical ghosting in high contrast situations such as headlights brake lights and even on sunny days service center said it was within acceptable tolerance but it greatly diminishes the clarity of vision through the windshield. Haven't seen anything like it in the four other cars manufactured across two decades that I've driven regularly. Dangerous design or manufacturing defect.