Tesla Model Y battery drain problems

Filed Aug 27, 2026 · WA

We had a terrifying moment today. Low-voltage battery died instantly, leaving the driver locked inside a completely blacked-out car. No electronic door response, phone app & keycards completely frozen. Luckily, we got out safely after calling Roadside Assistance, but this is a serious hazard: No advance warning: The car gave zero indication the low-voltage battery was dying. Counter-intuitive exit: In a panic, 99% of people won't recall where the hidden manual release is. Two urgently needed safety updates: 1. Advanced, explicit warnings days before low-voltage battery failure. 2. Door safety logic that guarantees standard exit hardware works seamlessly even during complete power loss. In hot weather, this corner case can turn fatal in minutes. Please prioritize this safety redesign!

Filed Jul 22, 2026 · Electrical, Seats · RI

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)

Filed Jun 4, 2026 · Driver assistance, Electrical · CA

The vehicle’s secondary Autopilot Processor / car computer is internally faulted and stuck in a continuous wake/shutdown loop. This causes severe standby battery drain (~20 miles of range lost per day while parked) and completely prevents all over-the-air software updates - including federally mandated safety recall remedies. On April 4, 2024, Tesla Service diagnosed the fault and linked it to the drain and inability to update. On the same visit, Tesla added two safety recalls (23V‑838 Autosteer controls and 24V‑051 Brake/Park/ABS indicators) to the work order. They then demanded ~$3,000 customer payment for computer replacement before the recalls could be performed. After I declined the paid repair, Tesla marked both recalls as “completed” via software update despite the same invoice stating the vehicle could not receive updates and remained on software version 2023.38.9 (which predates both remedy firmwares they claimed was installed). Tesla is effectively paywalling federally required safety recall remedies by requiring the customer to first pay for computer replacement first. Two additional recalls remain open (21V‑389 seat belt fasteners and 24V‑554 hood latch). The problem has been confirmed and documented multiple times by Tesla Service.

Filed Dec 11, 2025 · Driver assistance, Seat belts · CA

In early Nov 2025 my Tesla Model Y began intermittently showing warnings about the forward collision warning system and multiple sensors being offline. Tesla service replaced a faulty connector on Nov 3. On Nov 15, 2025, about two weeks later, the car had a sudden drivetrain failure while I was parking on a steep hill. I heard a loud bang from the front of the car and the vehicle immediately lost drive power and had to be towed. Tesla diagnosed a failed front motor inverter that blew the high-voltage pyrofuse and damaged the 12V battery; they replaced those parts. The vehicle is available for inspection and the repaired components and records are with Tesla. After that repair the car needed another visit for alignment and has continued to show worrying behavior: “VCFRONT offline/unable to contact VCFRONT” in the service menu, repeated “autopilot computer overheating” messages, intermittent loss or reduction of regenerative braking (braking feel changes unpredictably), a rear right seatbelt malfunction warning (later inspected and cleared by Tesla), and what appears to be significantly increased battery drain compared to before the inverter failure. This has now resulted in four service visits within about a month, all at Tesla service centers (no police, insurance, or independent shops involved). Tesla has confirmed the inverter/pyrofuse/12V failure and says the overheating was due to an air pocket in the cooling system, but the VCFRONT messages, inconsistent regen braking, and increased drain have not been fully resolved or clearly explained. I am concerned that a sudden loss of power, loss of regen, or failure of VCFRONT/autopilot systems could recur at speed or in traffic, creating a serious safety risk. Please note that I'm only able to view partially-complete paperwork from the latest service appointment in the Tesla app. I have requested this documentation from Tesla and will be able to provide all the service reports and communication as a follow-up.

Filed Sep 26, 2025 · Body, Electrical · CA

On August 20th, 2025 at 2:50pm, my eight-month-old infant was trapped inside my Tesla Model Y for approximately 30 minutes due to a critical systems failure. The vehicle experienced an error with the 12V battery that rendered the doors, windows, and trunk completely inoperable, preventing any means of access or escape. My infant was flushed, diaphoretic, and crying while stuck in his car seat with an indoor temperature exceeding 104 degrees fahrenheit. Despite all attempts to override the system, the car remained locked, and the battery dead, and emergency services had to be contacted. Officers from the Santa Barbara Sheriff’s Department, California Highway Patrol, and Montecito Fire Department arrived on scene and, in order to rescue my baby, were forced to smash a window to gain entry. The police officer was advised by a Tesla representative to do so, as he confirmed there would be no way to override the system to open the doors. My baby was found screaming in a pool full of sweat and was carried to an ambulance, where the paramedic warned me of concerning vital signs and advised me to go to the Santa Barbara Cottage Hospital to have his condition assessed and treated, if necessary. I have obtained a copy of the police report (Case No. XXX) and will provide it upon request. Tesla confirmed that this problem with the 12V battery is common, nonetheless we were made to pay for a new window and a battery replacement. There were no warning signs leading up to the shutdown and not notifying us of this system failure and the risk involved is complete negligence on behalf of Tesla.

Filed Sep 16, 2025 · Body, Electrical · FL

In December 2023 I strapped my [XXX] son into his carseat in our Model Y and walked around to the front to get into the car as well. In those few seconds the 12v car battery died (I did not get any notification in my app) and I was unable to open any doors, so my infant son was trapped. We live in Florida and this was an 80 degree day. With no other recourse I was forced to call 911 to have my son removed from the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 13, 2025 · Driver assistance · VA

Tesla has told me the AP4 computer has failed in my car which has resulted in them having to replace it. I had this issue start on 1/12, and I scheduled the earliest appointment available for 1/30. They did not offer me a rental or any assistance during this time, and I need my vehicle to commute to work and conduct other essential activities. It has just over 1,000 miles on it and is ~3 months old now. This issue impacts: backup camera, emergency braking, blind spot detection, lane keep/centering, assisting with parking, automatic high beams and wipers, cruise control/ adaptive cruise control, Vehicles built in GPS to be stuck at one location every time, has made my touchscreen not automatically brighten or dim, my auto dimming mirrors be too dim in most driving conditions, constantly fail to install system improvements and safety updates, and because my vehicle keeps trying to do this, it has caused increased battery drain as well. This has increased the safety risk of my vehicle tremendously, and i have received no reparations for it.

Filed Jan 9, 2025 · Driver assistance · WI

Tesla has told me the AP4 computer has failed in my car which has resulted in them having to replace it. I had this issue start right around [XXX]. I scheduled the soonest appointment available for 12/30 however Tesla contacted me and moved my appointment because they stated that the part was unavailable at this time and should be delivered by 01/9/25 but now it has been pushed back to 1/20/25. Not offering me a rental or anything on my brand new '24 Tesla. It has just over 1,000 miles on it and is ~3 months old now. This issue impacts: emergency braking, blind spot detection, lane keep/centering, assisting with parking, automatic high beams and wipers, cruise control/ adaptive cruise control, Vehicles built in GPS to be stuck at one location every time, has made my touchscreen not automatically brighten or dim, my auto dimming mirrors be too dim in most driving conditions, constantly fail to install system improvements and safety updates, and because my vehicle keeps trying to do this, it has caused increased battery drain as well. This has increased the safety risk of my vehicle tremendously... Tesla has not seemed to publicly acknowledge the issue yet either. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 9, 2025 · Electrical · NY

The computer suddenly failed on [XXX] due to a short circuit caused by a manufacturing defect in certain 2024-25 Model Y vehicles. This causes nearly all advanced functionality and safety features of the car to fail completely, including all cameras, parking assist, full self-driving, autopilot, autosteer, autopark, cruise control, lane keep, lane departure warning, blind spot monitoring, auto windshield wipers, map, GPS navigation and more. Also, the car does not sleep, resulting in excessive battery drain. The problem is widespread. It's this problem: [XXX] As a result the vehicle is significantly less safe to drive. Tesla continually delays service appointments due to unavailability of parts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Dec 18, 2024 · Driver assistance, Electrical · IN

Tesla has told me the AP4 computer has failed in my car which has resulted in them having to replace it. I had this issue start right around December 7, 2024. I scheduled the soonest appointment available for December 24, 2024 however Tesla contacted me and moved my appointment because they stated that the part was unavailable at this time and should be delivered by January 24, 2025. Not offering me a rental or anything on my brand new 2025 Tesla. It has just under 1,000 miles on it and have the car since November 8, 2024. This issue impacts: emergency braking, blind spot detection, lane keep/centering, assisting with parking, automatic high beams and wipers, cruise control/ adaptive cruise control, Vehicles built in GPS to be stuck at one location every time, has made my touchscreen not automatically brighten or dim, my auto dimming mirrors be too dim in most driving conditions, constantly fail to install system improvements and safety updates, and because my vehicle keeps trying to do this, it has caused increased battery drain as well. This has increased the safety risk of my vehicle tremendously. Tesla has not seemed to publicly acknowledge the issue yet either.