Service Brakes Problems of Tesla Model Y - part 1

Phantom brake incident today,5/26/26. Traveling 35mph, brakes slammed on for no apparent reason. Seatbelt tightened and my head launched forward. Neck is very strained.

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I have written several times before about my car's phantom braking in cruise control. When the santa fe Tesla dealer, where I bought the car, told me recently that the problem had been fixed, I was disappointed they didn't bother to tell me, but thrilled to hear the news. On may 12-13 I drove over 900 miles. I tried cruise control for significant portions of both drives and did not experience one problem. Finally, I thought, they fixed the problem. . . And how nice it was to have cruise control for extended drives. Not so soon: on may 19th I was driving 2 friends up to volunteer at the wildlife refuge on I-25 in northern new mexico. The phantom braking happened again. My friends were dismayed. . . One thought I had seen something in the road that she didn't see. The other, in the back seat, tried to understand what happened. Please, this is beyond the pale! of course I will call and take the car in to the dealer. . . An hour's drive for me. I will be surprised if they fix it, and if they do it under warranty. I did just buy new tires (see previous report about original tires with multiple flats and not even making it to their 40,000 mile warranty) so I'm no longer worried about getting a flat in the rural areas where I live and drive.

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Purchased used 2023 Tesla Model Y from Tesla on April 17, 2026 at ~16,300 miles. Pre-delivery, Tesla notified me by text that the vehicle failed state safety inspection due to front upper ball joint play (a known Tesla model 3/y defect). Tesla repaired it at its own service center and certified it as passing on April 8, 2026. No warning lamps or messages. ~12 days post-delivery a family member reported a noise from the left rear; the vehicle was then parked. On may 10, 2026, I removed the left rear wheel and found the left rear brake caliper completely detached from the rear knuckle. Both caliper bracket mounting bolts were missing. The caliper was held only because it had seized on the rotor. Vehicle unsafe to operate. Towed by flatbed to Tesla may 11; available for inspection on request. Properly torqued caliper bracket bolts do not back themselves out in ~800 miles of light use. Realistic causes: (a) bolts installed but not torqued to spec, worked loose in service; (b) bolts missing at state inspection and certified anyway; (c) suspension disassembled during the pre-sale repair, bracket reassembled with bolts omitted. All implicate Tesla's workmanship; (b) and a visibly-loose (a) also implicate the inspection. Tesla previously acknowledged this failure mode in recall sb-21-33-002 ("loose brake caliper bolts," 2019-2021 model 3 / 2020-2021 Model Y): caliper bolts "may not be torqued to internal specifications" and "may be loose, allowing the brake caliper to separate. " my vehicle is outside that range but the recall shows this is a known Tesla pattern. Risk: caliper detachment can wedge the wheel, lock the brake, damage tire/wheel, boil brake fluid, or break free at speed — any can cause loss of control. Vehicle driven ~800 miles in this condition. Dealer confirmation pending; Tesla instructed in writing not to repair pre-inspection. State police ased complaint filed; formal dispute filed with Tesla resolutions.

Our 2022 Tesla Model Y long range had a braking system failure due to a flawed routing of the rear flex brake lines. When applying the brakes at a red light the vehicle rolled into the intersection despite the brake pedal being pressed to the firewall. There were no warning lights at this time. After arriving home, large amounts of brake fluid were visible under the car. I removed the rear passenger side wheel to inspect the source of the leak. It was immediately clear that the flexible brake line was the source of the leak. It was installed (at the factory) in a position that allowed it to rub against the thin and abrasive edge of the wheel well. Over time, this cut into the brake line until a hole formed. The same issue was occurring on the rear driver side brake line. I took the car to a Tesla service center where they insisted that this was not a Tesla issue. They claimed that the faulty routing of the brake lines must have occurred within the last three weeks, and that they had never heard of this happening with another Tesla. Only after they looked at the problem did a brake warning appear on the screen showing there was a problem. I paid an independent service center to replace the lines and reroute them. I’m filing this report because I’m worried there are other customers, (especially those that have Model Ys that came off the line when mine did) driving around unaware that their brakes may fail when they need them most.

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There was a grinding sound coming from the lf wheel. This was progressively getting worse. Car was shaking while driving so dropped it off with my mechanic due to safety concerns. Per the mechanic that fixed the issue: inspection found lf wheel bearing is loose. A bolt backed out on inside rubbing through axel shaft. Allowed wheel bearing to damage to damaged from moving in place. Axle shaft damaged from rubbing on backed out bolt. Replace lf axle shaft and wheel bearing. Informed by mechanic that wheel could have fallen off while driving. No prior work. Mechanic believes most likely issue was not having the bolts appropriately installed at time of manufactue.

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The rear subframe wiring harness on my Tesla contains a significant design flaw that creates an unreasonable safety risk. The factory-installed corrugated protective tubing (wire loom) terminates prematurely, leaving approximately 1 inch of critical wiring completely exposed at the connector. This specific harness uses soy-based insulation, which is a known attractant to rodents. Because of the 1-inch gap in protection, rodents have been able to sever the same connector twice within a 30-day period safety risk: the exposed wires in the rear subframe harness are responsible for rear drive unit communication / wheel speed sensors / brakes]. A failure of these wires while the vehicle is in motion could result in a sudden loss of propulsion, unexpected braking, or the loss of stability control systems. This creates a high risk of a collision, particularly at highway speeds.

On April 11 2026, I was involved in a serious accident involving my 2026 Tesla Model Y. At the time of the incident, I was returning home from my daughter’s event in downtown and had just entered my residential driveway. As I approached the driveway, I applied the brakes and slowed the vehicle. While momentarily stationary or near-stationary, I spoke to my wife, who was seated in the front passenger seat, advising her to secure the food she was holding due to the uneven surface of the driveway. Upon removing my foot from the brake pedal, the vehicle suddenly and unexpectedly accelerated without any input . The vehicle proceeded forward and collided with my garage door. Notably, no collision warning alerts were issued, and no automatic emergency braking system engaged prior to or during the impact. Following the initial collision with garage door, the vehicle failed to stop and instead continued to accelerate into the garage, striking a refrigerator. The impact resulted in substantial damage to the refrigerator and caused extensive structural harm to the property, affecting the garage, adjacent living space, floors, and interior walls. The severity of the collision triggered deployment of the front airbags. At the time, my wife was seated in the front passenger seat, and my [xxx] daughter, along with her friend, was seated in the rear of the vehicle. Emergency services were called, I have forehead bruises and a burn on my hand from airbag deployment. My wife is advised physiotherapy for severe back pain and my daughter has since experienced ongoing emotional distress, nightmares. I am dealing with car and home claims issues for damages I am seeking a formal investigation into the cause of this incident, specifically addressing: 1)the unexpected and unintended acceleration of the vehicle 2)the failure of the vehicle to stop after the initial collision with the garage door 3)the absence of forward collision warnings and failure of automatic emergency braking . Information redacted pursuant to the freedom of info.

I am reporting a serious safety concern involving my Tesla Model Y. While driving, the vehicle’s main center screen (mcu) suddenly failed and entered a continuous reboot loop. This resulted in the loss of critical driving information and controls, including navigation, camera display, and vehicle system status. The issue occurred without any warning and nearly caused a serious accident, as I was unable to safely monitor essential driving information. This failure made the vehicle extremely unsafe to operate. The problem appears to be related to a known mcu system failure affecting some Tesla vehicles. I am concerned that this issue may present a broader safety risk for other drivers. Please investigate this matter for potential safety defects.

On March 23, 2026, my vehicle experienced a sudden and simultaneous failure of multiple critical safety systems without any prior warning. The alerts displayed included: automatic emergency braking unavailable, traction control disabled, stability control disabled, and additional driver-assistance features becoming unavailable. This incident created a serious safety hazard, as the loss of these systems significantly reduces vehicle stability and braking assistance, increasing the risk of loss of control, especially at highway speeds or in adverse weather conditions. In addition, the front-facing camera exhibits fogging and reduced visibility during cloudy and rainy conditions, which further impacts the reliability of safety and driver-assistance systems. Based on my research, similar issues have been reported by other Tesla owners, suggesting this may not be an isolated incident but a potential pattern defect. I am concerned about the safety of operating this vehicle and request that this matter be investigated for potential defects affecting critical safety systems.

I was entering the on-ramp to [xxx] , from [xxx] , to merge onto the freeway east bound towards [xxx] , when my Tesla suddenly lost all power, the brakes did not work and the power steering completely failed making it feel like it was locked up. I was traveling approximately 40-50 mph at the time nearing the gore point to merge onto the freeway. Fortunately I was in the inside lane and I rolled to a stop away from other vehicles. I could not steer at all. Had I been completely on the freeway, I could have been rear ended badly. I had my two young boys in the vehicle with me, both [xxx] and [xxx] . We were completely trapped in the vehicle with no power. My [xxx] old remembered to use the manual latch to get out. I opened my door manually and it broke my driver side glass window. Vehicles were passing us rapidly to enter the freeway. I called my husband who is a police officer and he came and picked us up. We called Tesla who said they could not get a read on our battery whatsoever. We called a tow company and had this vehicle towed to Tesla repair center in [xxx] , after reporting our traumatic event. They claim our warranty is expired, but our vehicle only has 37,638 miles and should be covered under the 8 year, 120,000 mile warranty that covers a major malfunction like this. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Following a "secondary" botched windshield replacement within 3 weeks performed by the Tesla service center in carle place, NY, my Tesla Model Y experienced a catastrophic structural water intrusion during rainfall. A great amounts of water dripping directly through the windshield seal into the cabin, soaking the dashboard electronics, floorboards, and much more water coming in from the brake pedal area while driving on lie. While I was driving the vehicle with my three children in the back seat, this water intrusion triggered an active electrical short circuit. The vehicle's hazard lights began flashing autonomously, and the electrical system became severely compromised, creating an immediate and life-threatening safety hazard on the road. The vehicle is currently grounded, completely undrivable, and poses a continued electrical fire risk. Tesla service has been notified in writing and has officially acknowledged via their app that the vehicle must be towed. This gross negligence in structural sealing has directly compromised the vehicle's electrical control modules, severely endangering the lives of the occupants. ".

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I've noticed periodically when the car is braking at start stop traffic in autopilot mode, the brake is very jerky and I can actually hear the pedal jerking and engaging. I wrote it off at the time in my head as normal operation of the car. I have brake pressure offset codes and brake booster mia codes. Sometimes I've noticed when I brake, randomly the pedal is super stiff and it feels like the car is driving on ice, as if the brakes aren't working or slowing me down at all, but I thought nothing of it at the time. Today on the 14th, I got into an accident at a relatively slow speed that in any other scenario I should have been able to stop. Yet I hit a parked car because as I was braking, I felt the pedal go very very stiff and unresponsive, and I carried the same speed as when I started braking right until impact, it seems as if I didn't slow down one bit. The brakes did not respond as they did mere seconds before and I hit a parked car. I understand Teslas may throw codes left and right in service mode that may mean nothing, but I am worried about the brake booster code and wonder if maybe it caused the accident I was involved in. My friends told me they heard about Tesla brake issues and that I should look into it and when I went to go check the codes hours later there they were.

Incident date?March 07, 2026] current mileage, 31625 miles ? I am reporting a catastrophic structural failure of a safety-critical suspension component on my Tesla Model Y. ?upon inspection, I discovered that one of the bolts securing the driver-side lower control arm has completely detached and fallen off. A second bolt is approximately 50% loose. This has caused a significant safety hazard, as the control arm is no longer properly secured to the subframe, leading to a high risk of total steering loss and wheel detachment while driving. ?furthermore, when I contacted Tesla service, they demonstrated extreme negligence by instructing me to drive the vehicle in this lethal condition to their service center. They also initially refused to cover the towing and repair costs, claiming it was not a factory defect despite the clear evidence of fastener failure (improper torque or thread locker application during manufacturing). ?this is a clear manufacturing defect that poses an immediate threat to the driver, passengers, and other road users. I am requesting NHTSA to investigate this batch of Model Y vehicles for suspension fastener integrity issues to prevent potential fatal accidents.

The vehicle was delivered with a critical safety defect in the braking system and inoperable safety software (gps/fsd/navigation). Upon further inspection by the dealer's own technician, it was confirmed that the vehicle had 'extremely poor brake feel' and 'extreme rust build up' on all pads and rotors, which violated Tesla’s 6mm minimum safety standard for used vehicles. Additionally, a physically damaged windshield harness caused the failure of gps and fsd features. These defects posed a significant safety risk to myself and my family during operation. The dealer has documented and confirmed these safety issues but is now refusing a buyback and is retaliating with storage fees for my rejection of the unsafe product. No warning lights appeared prior to the technician's discovery of the brake defects.

I was at full stop on [xxx] facing [xxx] at a red traffic signal at intersection. Then while still at light which was red the vehicle unexpectedly accelerated toward [xxx] on its even with feet on brake, I attempted to maneuver to avoid colliding with vehicles traveling on [xxx] , then made a sharp right turn on sidewalk of [xxx] drove striking a "bee line bus" sign located in front of [xxx] . I was able to maneuver not hitting any pedestrians and crashing vehicle out a brush on sidewalk without putting passengers/family in car at risk of injury information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2026 Tesla Model Y. The contact stated that while driving at approximately 10 mph into a parking spot, the contact depressed the brake pedal, but the vehicle failed to stop. The vehicle drove over a parking bump, struck a bench, and the automatic emergency braking system engaged, preventing the vehicle from hitting the wall. The air bags did not deploy. The contact stated that she had back pains, but was unsure whether they were related to the failure. There was no medical attention received. A police report was filed. The vehicle was able to be driven away from the crash site. The vehicle was taken to the dealer, who test-drove the vehicle. The contact was informed that the vehicle was not equipped with a manual parking brake; however, the brakes were functioning normally according to the computer, and to wait for corporate's report before taking the vehicle to a collision center for front-end repairs. The vehicle was not repaired. The manufacturer was made aware of the failure and opened an investigation. The contact was informed that the vehicle was safe to drive. The failure mileage was approximately 6,000.

It was snowing and I was driving slow. About 8:40am, Feb 6th, 2026, I got a "one pedal driving disabled" alert just for a moment, then tried to stop before an intersection because a signal was turning to red. However, break didn't work and I had to enter the intersection under a red signal. Fortunately, there was no car in front of me, also a car coming from the side didn't notice signal changed. No accident, but very very scary. On Dec 6th, I also got an alert "one pedal driving disabled" and even after I released an accelerator pedal, speed didn't slow down. I reached Tesla on Feb 6th, but the service scheduled 4 weeks later. It's not safe to drive at all, thus, I will try to have them to check my vehicle ASAP.

While driving, the front left brake caliper detached, causing immediate damage to the wheel and a tire blowout. There was no recent brake, wheel, or suspension service (over two years). Tesla is repairing the vehicle for an estimated $2,336. 41 but did not clearly identify root cause. This was a sudden brake system failure that could have resulted in loss of control. I am reporting this as a potential safety defect.

We live on a road with a steep embankment. My wife backed across our driveway and when she put the car from reverse to drive it accelerated uncontrollably. She hit our mailbox, then a power pole across the street, a driveway across the street then over the embankment where she hit a retainer wall another wooden railing and finally came to rest against our neighbors house. If she wouldn’t have caught the edge of the house she would have went down approximately 150 foot embankment. Not only the car accelerated on its own it is supposed to automatically brake, it didn’t and the airbags never deployed. This all this happened right after it went through an automatic update. The car was totaled, with my wife getting a concussion and a lot of muscle injuries. There was no warning lights prior to event and we reported it to Tesla and all they did was send camera images which we had. The car is now in possession of wawanesa insurance because it was a total loss.

When driving with cruise control engaged the car randomly brakes and shows a "curvature assist " indication. The car quickly slows from 55 to 35 with no warning. This primary happens on a straight road, not a curve. I am concerned about the traffic behind me.

Any time you drive my vehicle there’s either violent shaking in the brake pedal, steering wheel, tires. When you try to brake it stutters. Using fsd it failed to stop instead almost hit a pedestrian on scooter and reported the time and date to Tesla. It stuttered and thank god I was able to jam in brakes. After 9 service visit the admitted they missed something and wheel alignment was off and tires were cupped. Along with a bracket for suspension. Which has not solved issues. It scary driving this vehicle especially as a single father who has to make long trips in the weekend for hockey.

Picked up car from Tesla service on 12/30/2025. On [xxx] at around [xxx] I had pressed the car break and suddenly accelerated and lead to crashing into the pole. I am concerned about the safety and if it is drivable. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I am writing to formally report a serious safety incident involving a Tesla vehicle and to document multiple critical system failures that occurred during an accident, resulting in physical injuries to me. On the 12/24/2025, while operating Tesla under rainy conditions, I experienced a sudden and dangerous malfunction of the vehicle. During the event, the steering system became unresponsive and appeared to lock, preventing me from maintaining control of the vehicle. Simultaneously, the braking system failed to respond as expected despite my attempt to apply the brakes. These failures significantly impaired my ability to avoid or mitigate the collision. Most concerning, the vehicle’s airbag system did not deploy during the impact. Given the severity of the collision and the resulting injuries, the lack of airbag deployment represents a serious failure of a critical safety system designed to protect occupants in such events. As a direct result of this incident and the apparent malfunction of multiple safety systems, I sustained physical injuries that required medical evaluation and treatment. Beyond the physical harm, the incident caused significant emotional distress and raised serious concerns about the safety and reliability of the vehicle. I am submitting this complaint to formally document these safety failures and to request a thorough investigation into the performance of the steering, braking, and airbag systems involved in this incident. I believe this matter presents a significant safety concern not only for myself but also for other drivers and passengers who rely on these systems to function properly in emergency situations. Please confirm receipt of this complaint and advise me of the next steps in your investigation process. I am prepared to provide additional documentation, including medical records, photographs, vehicle data, and incident details, upon request. Thank you for your attention to this serious matter.

The contact owns a 2023 Tesla Model Y. The contact stated that while driving at approximately 60 mph in light rain, the vehicle suddenly braked and causing the vehicle to lose control. The contact stated that the vehicle was on cruise control and auto drive assist. The contact stated that the vehicle veered to the left, crossed two lanes of traffic, and crashed into the highway divider wall. The contact stated that there were no warning lights. The contact stated that the left front end had crashed first, and then the driver's door and left front fender had crashed into the dividing wall. The contact stated that the driver's front air bag had deployed and burst; there was a large tear starting from the top of the air bag all the way to the steering wheel. The contact stated that he had burns on his hands due to the air bag explosion, bruises on his chest, and right arm. The contact stated that the police and emergency services arrived. A police report was filed. The contact stated that he was transported to the hospital, and the vehicle was towed to a manufacturer's collision center. The contact stated that the manufacturer's collision center downloaded the collision information from the vehicle's main frame and shared the accident report with the contact. The failure mileage was approximately 45,000.

There is a serious safety-related fsd (full self driving) fundamental design flaw with stop sign behavior. On previous versions and on the latest and best version of fsd (currently that is v14. 2. 1. 25) when fsd approaches a stop sign and there is no white painted stopping line, fsd will make its full initial stop (also called the zero-speed stop) directly at or behind the stop sign instead of making the initial full stop beyond the stop sign at a location where the driver can see cross traffic. Sometimes the fsd initial full stop is 20, 30, 40, even 50+ feet back away from the edge of the road. At these distances from the edge of the road, most of the time, there is no visual of cross traffic left and right. The fsd stop then turns into the fsd "creep" where fsd, after stopping 30 feet back will then commit to the turn from 30 feet back giving drivers little to no time to see cross traffic. If I am the supervisor of fsd who is liable for my safety and my vehicle's safety, I need to be able to see cross traffic before my car (with fsd engaged) decides to commit to the turn, but fsd does not care if the driver can see. The "creep" is perhaps the least human-like manuever that fsd performs. From the stopped location directly at the stop sign, they creep may inch up and stop again, it may inch up a couple times and stop again, it may pull up to the edge of the road and stop again, or it may just pull out into oncoming traffic in one swift motion. Bc of this behavior, fsd has almost got rear ended countless times at stop signs. Also, cross traffic see's the creep and thinks I'm about to pull out in front of them drivers go beyond the stop sign to a location where they can see to make their one and only full stop. To avoid this issue, fsd needs to do this too (I. E. Make initial full stop at the edge of the road) this is legal in mostly every state (I live in PA) Tesla has not provided a single response to these reports and nothing seems to be getting done about it.

The contact owned a 2025 Tesla Model Y. The contact stated that while the vehicle was parked in a school zone area, and while engaging the brake pedal, the vehicle unexpectedly lunged forward with no warning light illuminated. The contact stated that after lifting their foot from the brake pedal, they heard a hissing sound and the vehicle accelerated. The contact attempted to avoid a collision by making a left turn; however, the vehicle traveled into a bushy area and rolled down a hill. The contact sustained injuries, including head, neck, and back injuries, and received medical attention at a local emergency room. The contact stated that the air bags deployed during the incident. A police report was filed. The vehicle was towed and deemed a total loss. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 7,213.

On several occasions, my Tesla Model Y has braked for no reason while using traffic aware cruise control as well as when using autopilot. I can re-create this situation on the same parts of the highway. The sudden, uncommanded stopping creates a hazardous situation with the cars being me as I may get rear ended. At this point, I do not feel safe using autopilot or tacc. I submitted a ticket to Tesla but they declined to work on it.

On 11/29/2025 at 1635 hours, our Tesla Model Y - awd was parked on our driveway with a less than 1% incline after it was snow blowed, cleared of snow. The Tesla was plugged in to its charger. The vehicle then unexpectedly, uncontrolled began moving forward, striking the car in front of it shortly after I walked in front of these Tesla. This incident could have seriously injured myself or one of my children. Tesla said car is operating as designed and was due to cold temps, snow and slight grade of driveway. Video is available from security cameras on house which can be supplied upon request as you system doesn't support the video upload.

When driving on slippery surfaces, if I release the accelerator pedal—even slightly—the vehicle automatically activates regenerative braking to recapture energy. On ice, this sudden deceleration mimics applying the brakes, which can cause an immediate loss of traction and control. This happened to me recently while driving in snowy and icy conditions. As soon as I eased off the accelerator, the car engaged regenerative braking, the wheels lost grip, and the vehicle began to slide, similar to what would happen if hard braking were applied on ice. I momentarily lost control of the car, creating a serious safety hazard. This behavior is not intuitive and can surprise drivers, particularly in winter climates. Unless regenerative braking is manually adjusted or turned off—something not every driver knows to do—the system can unintentionally put the vehicle into a skid. I am requesting that NHTSA review this issue. A software modification or warning may be needed so drivers are not placed at risk due to unexpected regenerative braking on slippery surfaces. Thank you for your attention to this safety concern.

The car has a feature called "curvature assist" that takes control of braking and steering at times when using cruise control. The incidents are at times surprising as there is no curvature present but the braking is suddenly applied. This is a surprise for both the driver and any following traffic. The car would be safer if this feature could be disabled but that is not possible.

While operating my Tesla Model Y in a commercial parking lot at a t-intersection controlled by a stop sign, the vehicle unexpectedly and automatically accelerated without driver intent. The incident occurred during a low-speed maneuver. Upon the unexpected acceleration, I immediately attempted to regain control by applying the brake pedal repeatedly and firmly. Despite clear manual brake application, the vehicle did not decelerate as expected and continued to move forward. I also attempted to stop the vehicle by pressing the park button, but this action did not stop the vehicle. The vehicle continued uncontrollably for approximately 150+ yards, traveling over curbs, striking a fence, and ultimately colliding with the garage structure of a residential home. Throughout this sequence, the vehicle remained unresponsive to braking and stop inputs. Vehicle data later confirmed that brake pedal application was detected prior to impact, yet braking response was insufficient to prevent continued motion. At the time of the event, the vehicle recorded system fault states, and collision avoidance systems did not activate. Despite significant structural impact and property damage, airbags did not deploy. The incident raises serious safety concerns regarding: •brake-by-wire system execution during fault conditions •pedal input arbitration between accelerator and brake •failure of collision avoidance systems to intervene •failure of restraint systems to deploy during a severe impact •vehicle behavior when control systems are in a fault state this event occurred without warning and despite appropriate driver response. Based on vehicle data and system behavior, this appears to be a system-level failure rather than driver error.

1. There is a constant thunking noise coming from the front suspension when traveling on slightly bumpy roads at low speeds. 2. Both front seats squeak and squeal as if they are loose and not bolted in correctly. 3. Front brakes screach and squeal when coming to a stop in cold or wet weather, escpecially pronounced during cold weather. (this is an active service bulletin in all vehicles made in their berlin factory but is happening in u. S. Built vehicles as well.

Summary of safety defect: multiple critical safety systems randomly disengage without warning while the vehicle is in operation, creating an immediate crash hazard. Detailed description: for approximately one month, my vehicle has experienced intermittent, unpredictable failures of multiple safety-critical systems while driving. These failures occur randomly during operation and include: regenerative braking system failure (primary safety concern) lane departure warning system failure automatic vehicle hold system failure traction control system failure automatic emergency braking system failure electronic stability control system failure safety hazard analysis: the sudden disengagement of regenerative braking while driving poses an acute collision risk. Tesla vehicles are designed with regenerative braking as the primary deceleration method when releasing the accelerator. Drivers develop muscle memory and expectations based on consistent vehicle behavior. When regenerative braking unexpectedly disengages mid-drive, the vehicle's deceleration characteristics change dramatically and without warning, creating a dangerous situation where: the driver expects normal deceleration upon releasing the accelerator the vehicle instead continues at speed, requiring sudden brake application reaction time is insufficient to compensate for the unexpected behavior change rear-end collisions or other crashes become likely, particularly in traffic similarly, the automatic vehicle hold feature unexpectedly disengaging means the vehicle may roll when the driver expects it to remain stationary at traffic lights or stop signs. Pattern and frequency: these system failures occur randomly and unpredictably while driving. The issues sometimes resolve after: restarting the vehicle restarting the cent however, the failures recur without warning during subsequent driving. Manufacturer response: service visit date: November 28, 2024 diagnosis: Tesla service center acknowledged this as a.

I am reporting two severe 'phantom braking' incidents involving my Tesla vehicle while driving without autopilot. In both instances, the vehicle initiated hard emergency braking on a high-speed roadway with no obstacles, pedestrians, or vehicles in my path. This sudden, uncommanded deceleration created an immediate risk of a rear-end collision from following traffic. Incident 1: November 2025 at approximately [xxx]. I was traveling at 30 mph on [xxx] . The car suddenly braked to 0 mph. Weather was sunny, and the road was straight. There were several vehicles following behind me. Incident 2: [xxx], at approximately [xxx]. Location: [xxx], honolulu. The vehicle decelerated from 10mph to 0 mph without warning. In both cases, the car stopped suddenly and was placed in park. I had to put the car in drive to resume driving. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On November 10, 2025 while my 2025 Tesla Model Y was being driven, in miami, florida, around 2:55–3:05 pm, the brakes failed completely. Despite firm brake pedal pressure, the vehicle did not slow down or stop as expected and continued forward until a collision occurred. The brake pedal felt normal with no loss of resistance, but the car did not decelerate as expected. No forward collision warning (fcw) or automatic emergency braking (aeb) activated prior to impact. There were no audible or visual alerts displayed before or during braking. After the collision, the vehicle’s screen displayed messages stating “airbags deployed” and “automatic emergency braking is unavailable. Feature may be restored on next drive. ” however, the airbags did not deploy. A burst of white particulate dust, consistent with airbag propellant or deployment powder, was released inside the cabin. None of the vehicle’s cameras recorded the incident; there is no dashcam or sentry mode footage from that time. At the same time, the cell phone, which was actively linked to the vehicle through bluetooth and the Tesla app, stopped transmitting location data through the life360 app for a few minutes. This may indicate a coinciding electrical or data interruption affecting both the vehicle and connected devices. This incident placed my families safety and that of others at serious risk. Multiple safety systems appear to have failed simultaneously, including the braking function, forward collision warning, automatic emergency braking, camera recording systems, and airbag deployment.