2021 Tesla Model Y Owner Complaints

On 8/10/26, my Tesla experienced a complete low-voltage electrical failure while parked at my home. I owned the vehicle 34 days and put 1,054 miles on it after purchasing it directly from Tesla as a pre-owned vehicle. I entered the driver's seat, and closed the driver's door. The center touchscreen was completely black, the vehicle would not power on, and the Tesla mobile app could not control the vehicle. I attempted to exit the vehicle, but the electronic driver's-door release would not operate. My husband was outside the vehicle and was also unable to open the driver's door from the exterior. The outside temperature was approximately 80 degrees, and the interior of the vehicle became increasingly warmer. For several minutes, we attempted to open the driver's door, lower a window, or restore power without success. I had not been shown or instructed on the location or operation of the manual emergency door release when Tesla delivered the vehicle. I ultimately had to climb over the center console to the passenger side and push the passenger door open with both feet. Tesla Roadside Assistance was contacted and the vehicle was towed to the Tesla Service Center. Tesla's 8/12/2026 service record documents the concern as "Parked vehicle unable to power on" and states that the technician found the 12V battery inoperative. Tesla replaced the 12V lead-acid battery assembly. During the same service visit, Tesla also replaced the left-front door glass and upper trim. Tesla separately verified that the passenger-side window had come out of its track and scratched the trim and documented that the cause was a loose and improperly seated front-right door trim panel. I received no warning on the vehicle display or through the Tesla app before the low-voltage battery failed. My primary safety concern is that loss of low-voltage power disabled the normal electronic means of exiting the driver's door while I was inside the vehicle, with no advance warning.

NHTSA ID

11756565

Incident

Aug 10, 2026

The high-voltage battery failed unexpectedly shortly after the warranty expired (with only 9,000 miles past warranty). Tesla Service confirmed a main high-voltage battery defect and quoted a full battery replacement. A sudden high-voltage battery failure causes a complete loss of propulsion/power, creating a severe collision and safety hazard on public roads. There were no prior warnings until the system suddenly failed and rendered the vehicle inoperable. The vehicle is currently available for inspection. This appears to be a premature latent defect in 2021 model high-voltage battery packs.

NHTSA ID

11755660

Incident

Aug 3, 2026

Separately, the system could not hold a consistent speed on open highway with no vehicle ahead. It would surge from a set 70 mph to roughly 72-73 mph and then drop back, repeatedly, producing a pulsing acceleration and deceleration. The system also hesitated frequently and issued repeated audible alerts without an identifiable hazard present. I previously filed a complaint regarding phantom braking on this same vehicle (ODI number 11450326, filed February 4, 2022), which described nearly identical behavior triggered by trucks on the same Georgia-to-New Jersey route. That complaint concerned FSD/Autopilot software from 2022. The behavior described here occurs on Tesla’s current v14 Lite software released to Hardware 3 vehicles in July 2026. The defect has persisted across more than four years and multiple software generations. Unexpected hard braking at highway speed with no hazard present creates a rear-end collision risk to my vehicle and to following traffic.

NHTSA ID

11755578

Incident

Aug 1, 2026

The contact owns a 2021 Tesla Model Y. The contact stated that while the vehicle was parked, there was an abnormal sound while turning the steering wheel to the left or the right. There was no warning light illuminated. The vehicle was taken to an independent mechanic, and the contact was informed that the lower and upper control arms were failing. The contact was informed that the lower and upper control arms needed to be replaced. The contact was advised to take the vehicle to the dealer. The dealer was made aware of the failure. The contact stated that a service appointment was scheduled. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 100,000.

NHTSA ID

11755463

Incident

Jul 24, 2026

Mileage

100,000 mi

Front suspension makes creaking noises for a few months now. The car only makes noises when steering wheel is turned while reversing and sometimes when turning. Took the car to Tesla and they told me since the sound is not that loud and not really reproducible, then to bring it back when it gets worse. My car only has 34k miles on it.

NHTSA ID

11755436

Incident

Apr 15, 2026

Noises started coming from suspension and I had an independent shop verify the issue. The lower control arm had separated from bushing and rubbing against subframe.

NHTSA ID

11755186

Incident

Jul 15, 2026

Description of Safety Incident:The front passenger safety restraint system failed, displaying the warning alert: "Seats - Front passenger safety restraint system fault / Service is required." This alert disables or suppresses the front passenger airbag and seatbelt restraint system, creating a direct safety hazard for front-seat occupants.Service History & Recurring Defect:On February 26, 2025 (at 50,596 miles), Tesla Service Center diagnosed an open circuit in the front passenger seat harness/back frame. Under Service Bulletin / SRS Warranty, Tesla replaced the front seat back, seat harness assembly (PN: 1489060-03-G), occupancy sensor (PN: 1099592-00-F), and SBR sensor clip (PN: 1130363-00-B). On August 1, 2026 (at 63,583 miles)—less than 13,000 miles after the initial replacement—the exact same safety restraint system fault recurred.Safety Concern:The front passenger seat harness and Occupant Classification System (OCS) appear to suffer from design strain, pinching, or premature wiring degradation during normal seat movement. Because this defect disables critical safety restraint components and recurs shortly after replacement, I am submitting this report to request a federal safety review and investigation regarding Tesla Model Y front passenger seat wiring harness integrity.

NHTSA ID

11755028

Incident

Feb 25, 2025

Vehicle can become difficult to steer in certain situations

NHTSA ID

11754876

Incident

Jul 25, 2026

Failure of the front lower lateral link and compliance link assembly. A creaking noise when steering at low speeds prompted me to take the vehicle to be checked out at a Tesla repair shop. The vehicle required a complete replacement of these parts at an independent cost of $1,900. I have the line-item proof of parts and labor.

NHTSA ID

11754492

Incident

Jun 15, 2026

On June 7, 2026, my 2021 Tesla Model Y with approximately 37,131 miles became completely unresponsive and could not be driven. Tesla Mobile Service replaced the 12V low-voltage battery on June 11, 2026. The official repair notes stated that the battery was replaced, proper operation was verified, there were no active alerts, and the vehicle was in excellent condition. Shortly after this repair, multiple vehicle systems stopped functioning, including all cameras, navigation/GPS, and software/firmware updates. Tesla Service later diagnosed the vehicle as requiring replacement of the HW3 vehicle computer at a cost of approximately $3,066. The loss of camera functionality disabled or affected multiple driver assistance features that rely on the camera system. The vehicle has been unavailable for approximately one month while awaiting repair. During discussions with Tesla Service regarding the diagnosis, I was informed verbally by the Service Manager that they see similar HW3 computer-related issues on a regular basis (approximately every other week). I cannot independently verify that statement, but I am including it because it contributed to my concern that this may not be an isolated incident. I am not asserting the root cause of the failure. I am submitting this complaint because the loss of the vehicle’s camera system and related driver assistance functionality may represent a potential safety concern, and I believe NHTSA should be aware of this incident.

NHTSA ID

11754296

Incident

Jun 7, 2026

I am reporting a safety defect involving a severe structural metallic "clank" or "clunk" under the vehicle's chassis during rapid acceleration and sudden braking. This vehicle was previously serviced by Tesla in 2023 for this identical issue (service invoice attached). While the repair initially suppressed the sound, the hazardous clanking noise subsequently returned, persisted for a period, and then went away on its own.The return and subsequent disappearance of the noise suggests that critical suspension or drivetrain components are shifting out of specification under load, binding, or experiencing intermittent mechanical failure. Given the active federal investigation into 2021–2023 Tesla Model Y front lower lateral link separations, I am deeply concerned that the underlying component remains structurally compromised despite the 2023 service. An intermittent or settling defect still poses an imminent safety risk of sudden component separation and total loss of steering control at driving speeds.

NHTSA ID

11754244

Incident

Dec 3, 2023

Within four months my car has suspension problems and I didn't know until my tires got bad there was a noise and I didn't know that was the suspension. I bought four brand new tires and I took it to the Tesla dealer and I told the attendant that my car was wearing the tire inside really bad. After I bought 4 brand new tires I took it to the Tesla for an alignment and when you left the car was even worse with the noise so bad. I am barely driving my car and I don't really know what to do if I have to take it to Tesla. I tried to get an appointment with Tesla and they are so full and my car feels like a rocking chair sometime. The tesla has only 31,000 miles.

NHTSA ID

11754046

Incident

Mar 17, 2026

My 2021 Tesla Model Y (VIN: [XXX]) experienced a serious safety malfunction during a 12V low‑voltage failure. When the vehicle displayed the 12V alert, it became non‑functional. Upon entering, no systems were operating. When I pressed the brake pedal, the interior lights flashed and both front windows began moving up and down automatically without any input. This uncommanded movement caused both windows to shatter violently inside the cabin. The glass broke along the lower section of the window, consistent with internal mechanical stress caused by the window motor cycling during a fault. This was not external impact. I have photos documenting the breakage pattern. This is a safety defect. Automatic window movement during electrical failure poses a risk of injury. Additionally, even if a customer closes a door with the window raised, the glass should not shatter. Tesla vehicles are designed with automatic window indexing and motor resistance protection. The system should adjust the window position to prevent breakage. The fact that the glass shattered indicates a failure of Tesla’s safety logic and window indexing system. Tesla denied responsibility and claimed “misuse,” but could not provide system logs to support this claim. Tesla also stated customers must ensure windows are lowered before closing doors, but this requirement does not exist anywhere in Tesla’s manual. Tesla’s explanation does not address the automatic window movement that caused the breakage. This malfunction presents a clear safety hazard: unexpected window movement, glass shattering inside the cabin, and risk of injury to occupants. I request NHTSA investigate Tesla’s window indexing behavior during 12V failures, the failure of safety protections, and the risk of glass breakage caused by system‑initiated movement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11753908

Incident

Jul 15, 2026

High voltage battery pack failed. It is available for inspection. No one was affected by the issue when it occurred. Tesla has inspected it and stated it has imbalance, and entire high voltage battery pack needs to be replaced. Yes, there is a warning messages on the screen. (BMS_a079 - Unable to charge - Maximum charge level reached) ...but only shows 50% State of Charge The issue happened randomly while the car was parked yesterday 7/29/2026

NHTSA ID

11753772

Incident

Jul 29, 2026

This is for a recurring front passenger safety restraint system defect on a 2021 Tesla Model Y, VIN [XXX]. The defect has now resulted in at least six service visits or invoices involving the same front passenger restraint / occupancy system concern, and Tesla has now charged $1,582.18 for another repair involving the front passenger seat cushion trim and seat back trim even though prior repairs did not permanently correct the condition. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11752865

Incident

Jul 23, 2026

Hello, We have 46224 miles on the car currently. A couple of weeks back the whole battery died. Tesla replaced the battery and we picked up the car this past Friday, the XXX. After picking up the car the driver's seat does not slide. I looked it up online on the Tesla website as well as on the app and at both the places it was strongly recommended to bring the car back to Tesla as the problem was very very likely secondary to the battery replacement. the seat does not move at all. When I spoke to customer service at out local Tesla dealership in [XXX], the earliest date they could provide us was in the first week of August! This is an urgent issue. We happen to be away on vacation that week. So we were told to review the cost estimate and then find a date on the app to bring the car in. When I questioned the estimate price, I was told that this was the worst case scenario. But the invoice clearly states Calibration, and 3 prices for a switch package all amounting to $364.45 with tax!!! Again I questioned this huge charge, considering the battery replacement and I was told almost rudely, "That does not seem to be the issue." Just not right!! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11752211

Incident

Jul 22, 2026

My car is having issues with downloading the software and installing it. It usually happens during the summer. 2025 summer i booked an appointment and visited the Tesla Service center. They diagnosed and told me the ECU is having trouble and need to replace same. Its cost around USD 4K. My car faced this issue right after the warranty is over. First the High Voltage batter died next day the warranty got over, but they replaced it under Battery Warranty. But ECU issue they want me to pay for the same. Its a huge cost and i do see lot of customers keep complaining about the same/similar issues all over internet. It looks like a wide spread issue which Tesla ECU fail after the warranty get over. Biggest challenge for the customers are, No Navigation, GPS is not working, All the cameras goes blind, Lane assistant doesn't work. dashcam recording doesn't work. Technically we can just charge the car and drive. No safety features work as expected.

NHTSA ID

11751688

Incident

Jul 1, 2025

The electronic power assisted steering (EPAS) rack on my 2021 Tesla Model Y experienced an internal electronic failure. The failure first occurred while the vehicle was performing an automated parking maneuver (Autopark) at low speed. The vehicle displayed the warning "Steering assist reduced / Steering may require increased effort" (alert UI_a020_SteeringReduced). Using the vehicle's built-in Service Mode, I retrieved the underlying diagnostic fault: EPAS3P_a072_motFeedFwdError, described by the vehicle as "Motor control feed-forward correlation error," set when the difference between estimated motor torque and commanded torque exceeds 1.2 Nm. The vehicle's own diagnostic screen lists the clear condition for this fault as "Replace EPAS," indicating an internal hardware failure of the primary EPAS module. The listed potential impact is "Reduced steering assist and EAC inhibited." The fault initially cleared after approximately three minutes but returned and is now latched: it persists through vehicle reboots and multiple drive cycles. While the fault is active, power steering assist is reduced and lane keeping assistance / active safety steering features are inoperative. Safety risk: steering assist can degrade without warning during low-speed maneuvers, requiring sudden and substantially increased steering effort, and lane keeping assistance is disabled. The failure occurred while an automated driving feature was in control of the steering, with no curb impact, collision, or abnormal use.

NHTSA ID

11749826

Incident

Jul 8, 2026

Recurring front passenger safety restraint system fault causing incorrect occupant detection for airbag deployment. Failed and was ‘repaired’ 3 times since 2024, including 2 consecutive failed repairs of the same part within the last 3 months. Tesla service advisor also mentioned informally this is a common issue. Tesla is now refusing further no-cost repair despite both recent repairs remaining under Tesla’s own parts warranty.

NHTSA ID

11749701

Incident

Jul 7, 2026

Error ui_a020 "steering assist reduced" appears without any noticeable steering changes at the moment, but with a warning that steering may become increasingly harder and harder. There were recent recalls on other models of Tesla.

NHTSA ID

11749310

Incident

Jun 30, 2026

Safety features on vehicle stopped working after software update was pushed to my vehicle. GPS, all cameras including backup camera and ones used for blind spots, and cruise control have all stopped working. Time displays incorrectly due to GPS issue and night mode stays on so rear view & back window stay dark making it hard to see other vehicles around me during the day. I’ve followed all recommended steps to resolve and issue persists.

NHTSA ID

11748415

Incident

Jul 2, 2026

Tesla model y is experiencing a front passenger airbag sensor failure (OCS) covered by factory bulletin SB-23-20-002 alongside TMPS and EAEB alerts. Tesla corporate resolutions is refusing to fix these safety system failures with out charging $1400 out-of-pocket, citing warranty expired.

NHTSA ID

11747298

Incident

Jun 1, 2026

The steering is not functioning properly. This is sealed system and no where else I can get it. This a safety issue and I haven't seen any car steering failing like this. Even cars as old as 20 year has no such issues. This is huge slap on of $3k+ on consumer. The cars is hardly 5 year old.

NHTSA ID

11744920

Incident

Jun 12, 2026

* What component or system failed or malfunctioned, and is it available for inspection upon request? FSD. It is available upon request. * How was your safety or the safety of others put at risk? Over the course of the last two months since the last FSD update (currently on v12.6.4), at least 20 times the vehicle has not properly stayed in the lane under certain circumstances listed below. These circumstances are always the same and it is repeatable and dangerous as the vehicle would have crashed into the center median if I had not intervened. Repeatable conditions: * 79 MPH * Low curvature highway at highway speeds when turning to the right only. * FSD version 12.6.4 with software version 2026.14.6 is engaged and in Assertive mode. * Has the problem been reproduced or confirmed by a dealer or independent service center? Tesla wanted $1k in order to reproduce and diagnose the problem, so I declined. * Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Same as above; Tesla wanted $1k in order to reproduce and diagnose the problem, so I declined. * Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? None of the safety systems fired, including lane departure warning or steering correction. FSD would not have veered out of the way of the median.

NHTSA ID

11744560

Incident

Jun 1, 2026

2021 Tesla Model Y suffered a complete failure of the front lower lateral links, compliance links, and upper control arms at only 29,103 miles. The vehicle has been inspected by the manufacturer. It is currently being repaired at my cost. There was no warning lights or messages. I had noticed a creaking sound upon turning, especially while in reverse. I believe this mirrors the exact mechanical failures seen in NHTSA Campaign 21V835000. However, my VIN number was not listed in this recall.

NHTSA ID

11744359

Incident

Jun 15, 2026