Service Brakes Problems of Tesla Model 3 - part 1

The break line ruptured causing loss of hydraulic pressure. The root cause was corrosion of the break line. This caused a major safety risk as I was unable to stop/slow the car down and had to coast to a stop. This is a known problem as addressed in Tesla's service bulletin sb-26-33-001. Tesla chose not to do a recall nor inform it's customers to get it inspected. The cost to replace the break line with corrosion resistant parts (as should have been done in the original design given that these cars as sold in the north east) is significant.

See all problems of the 2018 Tesla Model 3 🔎.

On xxx at around 3:30 pm est, I was driving my 2023 Tesla Model 3 on [xxx] about 10 miles outside of [xxx]. I had the adaptive cruise control set at 75 mph. I was driving in the right lane of the two available lanes of travel in that direction. I noticed an unattended car on the right shoulder about a 1/4 mile up the road and continued my drive as normal. The car was at least 5' to 6' off the highway. As I got about 30 yards from the car, my car suddenly slammed on the brakes automatically, which forced me to react in a corrective manner. Thankfully there was nobody behind me or the severity of the braking would have likely caused a rear end collision. To my understanding, this phantom braking is a known issue with Teslas, so I wanted to document my experience to add to the record. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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While operating the vehicle at low speed (~35 mph reducing to a stop) on August 1, 2026, at approximately 10:38 am under normal road and weather conditions, the vehicle experienced a catastrophic and simultaneous loss of primary braking capability and steering responsiveness. > detailed description of failure: > * brake failure: upon pressing the brake pedal, the vehicle failed to decelerate or stop adequately despite continuous application, nearly causing a collision. > * steering loss / disconnection: concurrently, while the steering wheel could physically be turned, it offered no directional control—turning the wheel had no effect on the vehicle's path, feeling as if the steering linkage or assist was entirely disconnected or disengaged. > vehicle warnings / diagnostic codes: > the vehicle's onboard display immediately registered critical active safety and chassis failures, specifically displaying: > * "abs (anti-lock braking system) disabled - drive with caution" > * "automatic emergency braking is unavailable - feature may be restored on next drive" > dashcam video and system screen captures documenting the exact speed, timestamp, and error messages have been saved and are available upon request. No crash occurred, but the sudden, simultaneous failure of core braking and electronic steering systems presents an extreme safety hazard. >.

See all problems of the 2025 Tesla Model 3 🔎.

The contact owned a 2020 Tesla Model 3. The contact stated that while driving 50 mph in traffic on a sunny day, the vehicle drove over a pothole, and the traction control and abs warning lights illuminated. The brake pedal was checked; however, fifteen minutes later the vehicle crashed into a 26-foot box truck. The contact stated that the box truck left the scene of the crash. The tire skid marks were 100 feet long. The air bags failed to deploy. The contact stated there was an electrical failure which caused the brakes to become inoperable. Additionally, the alerts were late. The contact stated that the battery might need to be replaced. The driver and his daughter, who was seated inside the vehicle, sustained back pain, whiplash, and knee injuries. The driver was transported by ambulance. Medical attention was provided. The contact stated that surgery might be needed in the future. The daughter was taken to the hospital, and medical attention was provided. A police report was filed. The vehicle was towed to an auto body shop. The edr was requested on the manufacturer website. The failure mileage was approximately 119,730.

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My brake lines have corroded to the point where half a liter of brake fluid has leaked out rendering the vehicle unsafe. Tesla admits that this is a design flaw but says that it does not affect this particular VIN number but the damage is exactly as described: [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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Description of the safety defect:my 2018 Tesla Model 3 awd suffered an abrupt and catastrophic total loss of mechanical braking power while driving. The brake pedal went completely soft, and the vehicle lost hydraulic pressure. An independent mechanic inspected the undercarriage and confirmed that the factory steel hydraulic brake lines completely rusted through and ruptured, leaking all brake fluid from the system. This vehicle has 142,905 miles and has been operated in regions that use winter road salt. Tesla is aware of this severe corrosion defect under service bulletin sb-26-33-001, but they have categorized it as a service bulletin rather than a safety recall. A factory brake line rusting through to total fluid failure is an extreme and immediate safety hazard to occupants and the public. Furthermore, the vehicle simultaneously threw a "front motor disconnected" warning. A federal investigation and mandatory recall are urgently required to ensure Tesla replaces these defective lines for all affected owners before a fatal accident occurs.

On July 11 at approximately 6:47 a. M. , I was operating my Tesla Model 3 on interstate 65 in hart county, kentucky, with full self-driving (fsd) engaged during normal highway travel. Approximately one hour earlier, I had departed a highway rest area after sleeping from the previous day’s travel. Rain developed during the trip, but I observed adequate visibility, apparent roadway traction, and I was not impaired. I was traveling in the far-right lane of a three-lane interstate. The posted speed limit was approximately 70 mph; however, fsd limited the vehicle to approximately 65 mph and displayed warnings indicating that the higher speed was unavailable. While fsd remained engaged, the system initiated a lane change from the far-right lane into the center lane. After entering the center lane, the vehicle began displaying repeated warning messages and fsd disengaged multiple times. I attempted to locate settings related to the warnings on the touchscreen but could not identify an available adjustment. During the third disengagement, I perceived that the vehicle continued braking without releasing while steering resistance increased significantly. The steering wheel then rotated abruptly, and I was unable to regain normal directional control before the vehicle departed its intended travel path and struck a concrete median. The collision caused personal injuries and substantial vehicle damage. I have not been able to reproduce the condition. The incident was investigated by the kentucky state police. Based on the sequence of repeated fsd warnings, disengagements, continued braking, and abrupt steering behavior, I believe this event warrants investigation. I request that NHTSA review the vehicle’s full self-driving logs, telemetry, event data recorder (edr) data, steering and braking commands, diagnostic records, and software history to determine whether a vehicle or software malfunction contributed to the collision. Almost like someone had control, into the wall -km.

-I was driving down into an indoor basement level garage very slowly as there is a steep incline. It descends from street level to basement level within a distance of approximately 30 to 35 ft. At the end of the incline is a sharp curve to the right, followed by a sharp left turn to proceed straight. -while on the incline, the car was slowing to a stop. I gently tapped the accelerator to keep it moving. -the car suddenly lunged forward, rapidly accelerating. The acceleration was not consistent with the amount of accelerator input I applied. -I quickly steered right to avoid hitting the wall, then immediately steered left to avoid hitting parked cars and garage columns. -I braked as hard as possible, pumping it. The brake pedal was stiff. The car kept moving forward despite my efforts and did not stop until I crashed into a parked car at the end of the garage. -my son was in the front passenger seat. We both had seatbelts on. Other than whiplash, there were no major injuries. -there were no warnings, messages or any indications that a problem was present prior to the incident. -there was no one in the parked vehicle that was struck and no other people in the garage. -my cell phone automatically alerted emergency services. The police responded, and I reported the incident.

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.

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The Tesla was hit on the passenger side by a Honda civic that ran a red light traveling more than 25 mph the Tesla spun 180 degrees after impact. No airbags deployed. Immediately after impact the Tesla turned on hazard lights. However the vehicle would not come to a stop after pressing on the brakes. After impact the vehicle was coasting backwards at probably less than 5-6 mph. It would not respond to brake presses. Oddly the vehicle had regen braking enabled which should have brought it to a stop, but it didn’t. The vehicle kept coasting backwards as if it was in neutral for about 20 meters until it hit a curb and stopped. Brakes would not work!!!.

My hard brake lines were corroded and had to be replaced on a 7 year old Model 3 with 70k miles on it. The cost was over $4000 as battery has to come out and it's very labor intensive. Tesla offered no help with paying for this. They tried to say the car probably was in a very corrosive environment before I bought the car (I purchased it about a year ago). However, I've seen little to no corrosion anywhere on the car. I've decided to report this issue after talking with several lifelong mechanics who have said they have never heard of hard brake lines failing on a car with age and mileage that mine has. Also after searching owner groups I've heard from other owners that have had this same issue and it seems like a growing number especially in early Model 3 cars. I was giving a warning about low brake fluid and advised not to drive the vehicle before getting it inspected.

Please review attachment.

Vehicle is 7 years old with 107,000 miles. I received a warning regarding low brake fluid with instructions not to drive the vehicle. Dealer is advising all brake lines are rusted out and need replacement. Rusted lines are apparently causing the brake fluid to leak. I've never heard of any vehicle, let alone a 7 year old vehicle, needing all brake lines replaced. After researching online, my 2018 Tesla Model 3 is not the only Tesla Model 3 with this issue. Specifically, it appears some early 2018 Model 3s have suffered this issue. I believe this is a design defect and safety issue, and that Tesla should be voluntarily repairing affected vehicles with this known issue, since it is a design/safety issue.

The steering was hard to turn, and the fully supervised driving mode didn't work. This has happened twice, and both times the issue went away on its own after a few minutes. I performed a soft reset both times, but it did not resolve the issue. The first time, the steering was very heavy, I. E. , hard to turn. The second time was less difficult, but in both cases, fsd (full self-driving) did not function. General guideline questions: 1. The steering system malfunctioned. The car is available for inspection. 2. The car was very difficult to drive. I was able to turn the wheel, but I won't let my wife drive it. 3. No. The nearest service center is 90 miles away, and so far, they want me to bring the car to them. I am still working to resolve this, as I believe this issue requires mobile service. 4. No inspections have been done. 5. Yes. An alert message on the main display stated: "alerts - steering & braking - steering assist reduced/steering may require increased effort. ".

Regen braking sporadically not working when going down mountain or steep roads. Sometimes they work and sometimes they won’t. This is after extensive driving on warm days while battery is between 70-80%. Support could not help me and they don’t have any technicians available. I’ve sent them videos and time stamps and they are ignoring the issue and unable to help due to lack of knowledgable representatives this is a serious safety concern.

While driving my Tesla Model 3 with self-driving engaged in excellent conditions, the car suddenly braked to a full stop. There was no apparent reason to do so and the driver did nothing. The road ahead was free of traffic, and no obstacles, pedestrians or animals were visible. It was possible to resume driving by turning self-driving off. Tesla forums online show many instances of others reporting similar problems in various Tesla models over several years. A rear end collision will ultimately be the result of this flaw if it hasn’t yet occurred.

While driving home from purchasing my new Tesla a under dash panel just to the left of the steering column detached an fell on top of the brake pedal. This made it impossible to apply the brakes. Fortunately because of regenerative braking I was able to stop the car and replace the panel. The panel is only held in place with 2 magnets. I find this extremely dangerous and could have easily caused a life ending accident.

Brakes failed to stop the car. The car sat at Tesla service center for one month with no action from Tesla. My wife rear ended another car. The air bags deployed. No one was injuryed and the other was not damaged. Both people could have been seriously hurt or killed. Car was finally towed to classic collision November 24 by state farm insurance for repair. Estimate to be repaired January 8, 2026.

The vehicle’s brakes did not work, automatic emergency brakes and collision warning both did not work. I pressed on the brake for about 5 seconds but the brakes did not work, resulting in a collision with the car in front. Everything is available for inspection if needed. Both my safety and the driver of the vehicle in front of me was at risk. The problem has not been confirmed yet. The vehicle is currently at a shop, waiting inspection. There were no warning lamps, messages, or symptoms.

I drove into my neighbor’s driveway to drop her off. As I slowed down and applied the brakes to stop, the car failed to respond. It continued forward, running over the flower and plant pots at the edge of the driveway, crossing the backyard, and finally colliding with the trees and bushes at the rear of the property. All airbags deployed, and the vehicle was damaged beyond repair.

The complaint was filed on behalf of the contact's daughter. The contact's daughter owned a 2020 Tesla Model 3. The contact stated that while the contact's daughter was driving at 35 mph, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact stated that the contact's daughter stated that the brake pedal felt spongy and unusual. The contact's daughter stated that the brake pedal was depressed to the floor; however, the vehicle still did not stop. The contact's daughter enabled the emergency braking system; however, the vehicle still did not stop. The contact's daughter beeped the horn to alert the nearby driver, and the dash cam independently activated. The contact stated that because of the failure, the contact's daughter's vehicle rear-ended the vehicle in front of the contact's daughter's vehicle. The air bags did not deploy. The contact stated that after the crash, the emergency braking system failure warning light was illuminated. The vehicle was towed to a local tow yard. The vehicle was condemned as a total loss by the insurance company. A police report was filed. The contact's daughter was treated at the local hospital on the following day. The contact's daughter sustained headaches, whiplash, and a concussion. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,000.

Repeatedly and randomly, with cruise control (not fsd) engaged, the car would brake, sometimes aggressively. The last time, it braked so hard the tires or brakes squealed and the car swerved slightly before I was able to regain control. This was on the freeway (in colorado, if I remember correctly) while I was cruising at 70 or 75 mph. I decided that that was the last time I would use cruise control; it was just not safe. I had an appointment on October 22 to take the car in for service. But then a friend told me this was called "phantom braking" and that there was no fix. A friend suggested that I contact the NHTSA.

Travelling south on [xxx]just south of [xxx] on [xxx] at [xxx]. Climate was medium-rain. Car began to hydroplane due to regenerative breaking. Lost control and began to swerve between lanes. Completely swerved 180 degrees so that car was facing wrong direct. Swerved back to right way on highway. No cars around and did not hit anything. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2024 Tesla Model 3 🔎.

The contact owned a 2023 Tesla Model 3. The contact stated that while driving at an undisclosed speed in the third floor of a parking garage, the vehicle suddenly accelerated to full speed unintendedly, and the steering wheel and the brake pedal were inoperable, causing the contact to lose control of the vehicle. The vehicle crashed into a wall and crashed into the vehicle in front, and the vehicle stopped. No further information was available. No warning lights were illuminated. The front driver's side air bag deployed. The vehicle was towed to a tow lot and was deemed a total loss by the insurance company. A police report was filed. There was no injury sustained. The manufacturer was not notified of the failure. The failure mileage was 66,000.

The brake lines badly rusted creating safety hazard as Tesla service reported when working on other maintenance. Not a warranty issue not covered as repair is over $3800. Vehicle was not abused and was kept clean regularly - this seems to be a vehicle defect if the brake lines can get moisture trapped behind the battery pack and create excessive corrosion requiring brake line replacement.

On September 18, 2025, my 2023 Tesla Model 3 (VIN: 5yj3e1eb9pf632327) suddenly accelerated on its own and the brakes failed to respond despite repeated pressing. To avoid hitting other vehicles, I turned into a property driveway and struck a tree. The airbags deployed. This was a case of sudden unintended acceleration combined with complete brake failure, creating a serious safety hazard. Forward collision warning also did not prevent the impact. A police report was filed by the dekalb county police department, GA, USA (report #25-074809, case #0440200), which specifically documented brake failure as the cause of the accident. The report also notes that the driver was injured by the airbag and that the vehicle had to be towed from the scene. A copy of the police report can be provided upon request.

The reason that I'm currently writing you this letter is to report an incident that happened on Sep. 16th, 2025. This is the date that I was very excited because I got my first ev - Tesla Model 3 new car. Me and my wife went over to the delivery plant in fefe, washington. The address is 3701 20th st. E. , fife, wa 98424. We took the car and I myself drove it back home around 2:45ish (-3 :00 pm the latest). It was just two blocks away from the plant outbound to the eastward trying to get to the entry of the highway. I stopped my car on my brake, and suddenly my car went forward by itself. This unintended acceleration caused me to hit the car in front of me. We had to stop in the next parking lot on my left side as soon as we passed the traffic light. This intersection happened right at the intersection of 54th Ave. E (northbound) and pacific highway e. I hit the car in front of me. My front bumper got some damage. The car is still drivable and I have put the photos and maps for your understanding.  .

On September 7, 2025 at ~7:53 pm, my 2025 Tesla Model 3 operating with full self-driving (fsd) engaged performed an aggressive, uncommanded turn while under computer control. The maneuver occurred so abruptly that I could not safely override steering before impact, and a crash resulted. The Tesla app trip view for trip 3 (7:34–7:53 pm) shows “vehicle on fsd” for 18 min 54 sec and records an “aggressive turning” event at 7:53 pm (2. 0 sec) immediately before the trip ended (screenshot attached). This reflects a steering/driver-assist control defect in fsd’s turning behavior and a failure of collision-mitigation to prevent the crash. I sustained bodily injuries and the vehicle incurred significant damage. I request that this incident be treated as a safety-critical malfunction warranting investigation and corrective action.

The contact owns a 2023 Tesla Model 3. The contact stated that while driving 70 mph, the vehicle jerked hard with several alerts for the "traction control, abs, lane departure feature displayed. Additionally, the stability control system was disabled, and the message “brake hold unavailable” was displayed. The contact stated that the “automatic emergency braking unavailable" and an orange triangle with an exclamation light were illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 48,380.

Three times while driving at low speed and attempting to reduce speed—even while pressing the brake pedal—my 2023 Tesla Model 3 unexpectedly accelerated. During the first incident, the dynamics screen did not allow me to change the deceleration mode. After rebooting the touchscreen, the options reappeared briefly, but later that same day they became unavailable again. Incident times: 2nd incident: September 3, 2025, at approximately 4:15 pm est 3rd incident: September 4, 2025, at approximately 4:50 pm est.

Main incident: time: 2025-08-28 ~12:41 pm pst what happened: after searching for a parking space, the driver was preparing to reverse into the spot, the driver pressed up the stalk to shift the gear into reverse, a sound was heard and something showed up on the screen, the vehicle once again started accelerating and running forward suddenly and sharply (3 mph to 28 mph in 3 secs), driver tried to steer the vehicle away from cars and buildings to minimize danger, the car rushed onto a concrete curb, hit one blue Tesla, then hit the side of a concrete utility pole, and ran over a plant and last crashed into the chain-link french before it finally stops injuries: * spine pain for one passenger damages: ** all tires blown out, tire falls off ** severe damages throughout the vehicle body * one Tesla parked on the parking lot was severely damaged * the utility pole's base box was scraped and deformed * one plant was knocked down similar case 3 few mins ago: time: 2025-08-28 ~12:38 pm pst what happened: the driver entered a oneway parking lot, but found no available spot and was trying to back up, the vehicle suddenly accelerated on its own. The driver performed an emergency brake and stopped the vehicle. At the time the vehicle stopped, it was only about 20 inches away from two cars in front of it injuries and damages: none what component or system failed or malfunctioned, and is it available for inspection upon request? malfunctioning of the electronic control or braking system leading to abnormal acceleration conflicting gear shifting and autopilot engagement design the right stalk is used to both shift gears and engage autopilot features, this design makes it very easy for the system to confuse the two actions autopilot feature safety issues autopilot features (whether its fsd or cruise control) should not be allowed to initiate abrupt acceleration to a dangerous speed in a low speed area (for example parking lot) insurance claim filed, number: 25-647243342.

On 08/20, while driving to work, I experienced a serious safety failure with my vehicle. The brake pedal became completely firm and unresponsive, making it impossible to press. At the same time, the steering wheel became very difficult to turn, severely limiting control of the car. Multiple warning messages appeared, including: •regenerative braking disabled •abs fault •traction control fault •limited power I was able to carefully maneuver the vehicle into a nearby parking lot and safely exit. After restarting the vehicle, the warning lights disappeared, and the car resumed normal operation. I immediately brought the vehicle to the Tesla service center the same day (08/20). As of now, there has been no resolution provided.

I am not the owner of this Tesla. I am the owner of the car behind it that hit the Tesla because the Tesla went into emergency automatic braking and the sudden additional deceleration happened too quickly to react to it and contact occurred while I was still doing about 5-ish mph. The Tesla driver obviously wasn't braking effectively, and the car took over for him to avoid hitting the car in front of him. But there is no consideration for the car behind. I do not know how far back the Tesla stopped from the car in front of it, but all I needed was 2-3 feet. (when I get into these 60 to 0 deceleration, when I know "I'm good" I ease up on the braking to give the guy behind me as much space as possible for him to get stopped so I don't get hit. ) Tesla's emergency automatic braking caused this accident.

All 4 brake lines (tubes) from either from abs or brake booster pump are corroded and pierced. All brake fluid leaked front center of the vehicle and lost all brake. Brake lines or tubes are looks good from under the front and back tires. It looks like a quality of the brake lines / tubes from abs to the bottom are not meeting the expected quality.

While driving to work on a local road, I approached a red light where there were no vehicles immediately ahead. However, my vehicle unexpectedly steered off the road in front of a construction sign, entering a ditch. Despite my attempts to regain control of the steering and braking systems, I was unsuccessful. The vehicle subsequently stopped automatically on an incline. Fortunately, I avoided a collision with a gas station and intersecting roadway, but sustained damage to my car’s front bumper. Law enforcement and a towing service were contacted to remove the vehicle. I tried calling the dealership almost half day without an answer, then I went to the dealership where they told me that the hardware is fine but they can’t do anything about the possible software issues which leaves me in a situation where I’m nervous to drive the car. I reached out to the company about the accident and didn’t hear back yet from them. I request a thorough investigation into this incident to determine the cause of the unexpected, highly dangerous, autopilot behavior. I am disturbed mentally and emotionally due to the accident. I also require confirmation of the vehicle's roadworthiness and assurance that it is safe to operate before resuming driving.