2017 Tesla Model X Fuel system Problems

High voltage battery management system generated fault codes BMS_u008 and BMS_f071 during a Supercharger charging session, prohibiting drive mode. Vehicle had been driven normally to the Supercharger with no drive-prohibiting alerts during transit. After connecting to the Supercharger, fault codes manifested. Despite fault condition, vehicle continued charging to 93% state of charge before requiring towing. This is the second such event — original HV battery also generated BMS fault alerts prohibiting drive mode during a charging session in January 2024 and was replaced with a remanufactured assembly. Third-party firmware alert data shows recurring hardware charging fault alerts (CHG_f018, CHG_f076, customer message: Unable to charge) occurring in January and February 2026, weeks prior to the March 2026 failure. Alert DI_u014 also fired repeatedly on March 18, 2026 indicating insufficient 12V supply contributing to undriveable condition — a separate system from the HV battery. Tesla Service Center has not investigated whether Supercharger charging events contributed to either failure, has not produced Supercharger session logs, and has not attempted software-level fault resolution before recommending full hardware replacement. Tesla's own firmware documentation describes BMS_u008 as potentially self-clearing and BMS_f071 as having a documented clear condition. Remanufactured battery subsequently drained from 88% to 0% over 11 days while unplugged at service center — 6-9% per day versus normal 1-3% per day vampire drain, consistent with active BMS fault causing abnormal parasitic draw.

NHTSA ID

11728947

Incident

Mar 18, 2026

Reproducible and sudden loss of indicated driving range at low state of charge (SOC) for 6 months. First documented occurrence on 9 September 2025 during my final service visit while the vehicle was still covered under Tesla’s 8-year unlimited-mile high-voltage battery warranty, at which time no corrective action was taken. After repeated documented low-SOC range collapses, back to service on 13 November 2025. Tesla acknowledged the fault, verified the condition with diagnostics and customer provided screenshots, and stated that CAN log data indicated the Battery Management System (BMS) was not calculating SOC correctly. Tesla replaced the BMS assembly under warranty as a continuation of the original issue and advised that the vehicle would need to be driven and charged for recalibration. Following this repair, I completed multiple full charge cycles to 100% and allowed time for recalibration. Despite this, the issue persisted with 100% reproducibility, with rapid loss of available range after driving and then parking when the vehicle indicated approximately 14–17 miles remaining. This condition resulted in a near-stranding event involving my family, including three young children, due to the unexpected loss of usable range without warning. I returned the vehicle again on 10 December 2025 to the Tesla Service Center in El Paso for the same unresolved issue. Tesla declined to perform low-SOC diagnostic or drive-down testing, instead stating the behavior was normal and required further recalibration despite prior calibration attempts and a failed warranty repair. Tesla has since stated that the vehicle is now out of warranty and has attempted to reclassify this unresolved condition as goodwill rather than treating it as a continuation of the original in-warranty defect. This condition presents a safety risk due to sudden and unexpected loss of usable driving range at low SOC, creating a risk of vehicle stranding.

NHTSA ID

11706975

Incident

Sep 9, 2025

Manufacturer designed a Pyro Fuse (a/k/a Battery Fuse), the purpose of which is to open the main battery's circuit in the event of a detected crash via a squib charge, in order to prevent further property damage or risk to life. The obsolete design contained in this model depends on a small lithium ion battery with a 7-10 year lifespan. In this car's case, a timer notification kicked in at about 6.5 years of life. The risk to not recalling this part with the new part design (self-charging from the current) and all affected models in the fleet is that now all these vehicles risk higher odds of a catastrophic battery fires during collisions and other failures the fuse was designed to prevent.

NHTSA ID

11545839

Incident

Sep 21, 2023

THE 17-INCH TOUCHSCREEN PERIODICALLY GOES BLANK OR DOES NOT COME ON WHEN CAR IS STARTED. THIS OCCURS RANDOMLY WHILE CAR IS STATIONARY OR IN MOTION.

NHTSA ID

11387108

Incident

Jan 6, 2020

Mileage

77,000 mi

VEHICLE NOT ABLE TO SUPERCHARGE DUE TO SALVAGE TITLE, VEHICLE WAS ABLE TO SUPERCHARGE FOR A YEAR AND TURNED OFF WITH OUT NOTICE OR WARNING. VEHICLE HAS NOT SUSTAINED DAMAGE TO HIGH VOLTAGE COMPONENTS AND PASSED TESLA HIGH VOLTAGE SYSTEM INSPECTION. NOTIFIED SUPERCHARGING IS PERMANENTLY DISABLED FOR BOTH TESLA AND THIRD PARTY DC FAST CHARGING MAKING IT IMPOSSIBLE TO RODE TRIP ON THE VEHICLE. I ATTACHED INVOICES FOR PAYED CHARGING VEHICLE NOW NOT SUPERCHARGING DISABLED.

NHTSA ID

11375676

Incident

Feb 1, 2020

Mileage

30,000 mi

THIS IS A COMPLAINT ABOUT THE TESLA BATTERIES WHICH ARE THE SUBJECT OF AN NHTSA INVESTIGATION. I DO NOT HAVE INFORMATION ON THE ACTUAL VIN OF THE CAR IN QUESTION SO I HAVE HAD TO SUBSTITUTE THE VIN FROM ONE OF THE MANY TESLAS IN A JUNKYARD. HERE IS A REPORT FROM A TESLA OWNER IN AUSTRALIA WHO IS GETTING EVEN WORSE SERVICE THAN IS NORMAL FOR TESLA. HTTPS://TESLAMOTORSCLUB.COM/TMC/THREADS/WARRANTY-DOES-ANYONE-HAVE-THEIR-WARRANTY-TERMS-FROM-2017.172151/ *** SNIP*** WARRANTY - DOES ANYONE HAVE THEIR WARRANTY TERMS FROM 2017 DISCUSSION IN 'AUSTRALIA' STARTED BY CSL2C3000, TODAY AT 6:36 PM. LOCATION: MELBOURNE, AUSTRALIA CSL2C3000, TODAY AT 6:36 PM HI, I HAVE HAD AN ISSUE WHICH RELATES TO LOW VOLTAGE AND SO I'VE SPOKEN TO TESLA WHO'VE SAID THAT THE CAR NEEDS A NEW BATTERY PACK AND IT IS NOT COVERED BY WARRANTY. THEY LOOKED AT REMOTE LOGS AND CONCLUDED THIS WITHOUT AN INSPECTION. THE COST OF THE REPLACEMENT IS $50K INC AND THERE APPEARS TO BE NO POTENTIAL FOR A SINGLE BATTERY BANK TO BE AT FAULT (BASED UPON WHAT THEY'VE SAID). THEY'VE QUOTED THE CURRENT VERSION OF THE WARRANTY TO ME BUT MY LEGAL GUYS SAY THAT THE TERMS THAT APPLY ARE THOSE THAT APPLIED WHEN THE CAR WAS SOLD, NOT THE CURRENT TERMS. THEY'VE ASKED ME TO TRY TO TRACK DOWN THE ORIGINAL WARRANTY. THE CAR IS A CP 04/17, BUILT 07/17, TESLA, MODEL X, 75D. I WAS WONDERING IF ANYONE HAS A WARRANTY FROM 2017? SPECIFICALLY THE CLAUSE RELATED TO BATTERY PACK WARRANTY. THANKING YOU ****** I BELIEVE THAT YOUR INVESTIGATION SHOULD BE EXTENDED TO COVER TESLAS THAT HAVE BEEN SOLD OUTSIDE OF USA. THESE BATTERY FAILURES AND POTENTIAL FIRE RISKS APPLY TO ALL TESLAS SOLD ACROSS THE WORLD. THANK YOU FOR LOOKING INTO THIS MATTER. CONCERNED CITIZEN ETC.

NHTSA ID

11277641

Incident

Oct 1, 2019

Mileage

5,000 mi

BATTERY RANGE HAS SIGNIFICANTLY AND SUDDENLY DROPPED. WHILE TESLA HAS STATED THIS IS 'NORMAL BATTERY DEGRADATION,' IT APPEARS THROUGH RESEARCH THIS MAY BE SOFTWARE LIMITED, DUE TO RECENT BATTERY FIRES WHICH ARE LIFE THREATENING. INSTEAD OF ADMITTING THE SAFETY ISSUE, RECALLING THE BATTERY, AND ENSURING A SAFER BATTERY IS INSTALLED, TESLA IS UPDATING SOFTWARE OPAQUELY. THIS IS FOR A MODEL X 75D WITH A 75 KWH BATTERY, AND SEEMS TO HAVE BEGUN WITH FIRMWARE 2019.32 ONWARD.

NHTSA ID

11271201

Incident

Aug 28, 2019

Mileage

37,200 mi

TESLA MODEL X P100D THE ACCELERATOR PEDAL SNAPPED IN HALF. WAS AT A DEAD STOP AND DID A FULL ACCELERATION RUN. CAR WAS GOING ABOUT 30 MPH AND JUST STOPPED ACCELERATING. I PULLED OVER TO SHOULDER AND STOPPED. WASN'T QUITE SURE WHAT HAD HAPPENED AT FIRST THEN SAW THE PEDAL LAYING ON THE FLOOR. HIGHWAY EXIT RAMP

NHTSA ID

11241618

Incident

Aug 3, 2019

Mileage

41,000 mi

I WAS DRIVING HOME IN MY MODEL X ON LAWRENCE EXPRESSWAY (8-LANE EXPRESSWAY) IN SANTA CLARA, CA AND STOPPED AT THE RED LIGHT. WHEN THE LIGHT TURNED GREEN, I PUSHED ON THE GAS AND NOTICED THAT THE CAR DID NOT MOVE AND PUT ITSELF INTO PARK. I COULD NOT PUT THE CAR INTO GEAR. THE MAIN SCREEN FLASHED SEVERAL WARNINGS THAT INCLUDED: PARK ASSIST UNAVAILABLE AUTOMATIC EMERGENCY BRAKING DISABLED. CAR NEEDS SERVICE TRACTION CONTROL DISABLED. STABILITY CONTROL DISABLED. I PUT ON THE BLINKERS, CALLED TESLA ROADSIDE AND THEY ASKED THAT I RESTART THE VEHICLE BY HOLDING THE 2 CONTROL BUTTONS ON THE STEERING WHEEL, HOWEVER BY DOING SO, WOULD STOP THE BLINKERS FROM BLINKING. I FELT THAT WOULD'VE BEEN UNSAFE BECAUSE I WAS IN LANE 2 HEADING SOUTHBOUND ON AN 8-LANE EXPRESSWAY, AND CARS WERE COMING FROM BEHIND ME PRETTY FAST. ROADSIDE ASKED THAT I CALL 911, WHICH I DID, AND THEY THEN SENT A TOW TRUCK TO GET ME OUT OF MY SITUATION. VIDEO OF WHAT HAPPENED LOCATED HERE HTTPS://YOUTU.BE/9I9SGHTMD7C

NHTSA ID

11099462

Incident

Jun 3, 2018

Mileage

8,553 mi