2024 Lexus Tx

2024 Lexus TX 500h Luxury. Since I bought it new, the vehicle has intermittently failed to accelerate from a stop. I have reported it to my Lexus dealer at every 5,000-mile service. Lexus TAS case numbers:[XXX] and [XXX]. The dealer applied Lexus TSB L-SB-0026-25 (Hesitation From a Stop), a TCM reprogram. It reduced how often it happens but did not fix it. It still occurs, and is worse in Arizona summer heat with the A/C on max. It matches the TSB conditions: it happens when the energy monitor shows about 30% (3 of 10 bars) and within about 5 minutes of starting the vehicle. What happens: I am stopped at a green light waiting to turn left. When a gap opens I press the accelerator, and the vehicle coasts through the intersection at about 5 mph even with the pedal fully to the floor. I have nearly been hit by oncoming traffic while stuck in the intersection. A left turn across traffic depends on the vehicle accelerating when commanded, and this one does not. I no longer trust the vehicle to accelerate when I need it, so I have to wait for much larger gaps and take extra care on every turn across traffic. A second symptom: pulling away from a red light, the transmission suddenly downshifts and the vehicle lurches forward. The engine revs unexpectedly with no change in pedal input. My dealer has told me they have seen other TX 500h vehicles with this same problem after the TSB was applied. Other NHTSA complaints describe the same failure on the TX: ODI 11768652, 11653862, 11730468, 11679221, 11758930, 11697848, 11589001 and 11752837. Lexus's own TSB confirms the condition exists, but the fix is incomplete. The RX 500h shares the same powertrain and is covered by the same TSB. RX owners report the same failure: ODI 11621814, 11733235 and 11615471. The vehicle is available for inspection. I am asking NHTSA to investigate loss of acceleration from a stop on the 2024-2025 TX 500h and 2023-2025 RX 500h before it causes a crash. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(

NHTSA ID

11771577

Incident

Jul 1, 2026

The contact owns a 2024 Lexus TX 500H. The contact stated that while driving at an undisclosed speed the "Hybrid System Malfunction" warning light illuminated. The contact stated that several days later, a secondary warning light illuminated for the battery failure. After the third failure, the "Hybrid System Malfunction - Contact Dealer" message was displayed. Additionally, the vehicle failed to start and was jumpstarted. The vehicle was towed to the dealer on several occasions for the hybrid battery and related electrical warning failures. The contact stated that there was excessive heat inside the vehicle. The manufacturer was notified of the failure. The failure mileage was 21,000.

NHTSA ID

11768143

Incident

Jul 2, 2026

Mileage

21,000 mi

The car emits very strong gas fumes into the cabin during longer drives. You can taste the gas. Has happened over 5 times. Submitted for service multiple times; on the 4th time, they were finally able to "recreate it". And the dealer confirmed the issue. No warning or check engine lights came on.

NHTSA ID

11765886

Incident

Jul 25, 2025

Odometer Fraud: The contact owns a 2024 Lexus TX 350. The contact stated that a mileage discrepancy was discovered. The vehicle was a dealer sale. The contact discovered information indicating that the vehicle was a cloned vehicle. At the time of purchase, the vehicle mileage was 39,000; however, during a service appointment, it was discovered that the vehicle mileage was 41,800.

NHTSA ID

11764460

Incident

Dec 15, 2025

Mileage

41,800 mi

The contact owns a 2024 Lexus TX 500H. The contact stated that while driving approximately 50 MPH, the vehicle drove over glass in the roadway that struck the air conditioner condenser. Approximately two weeks later, the air conditioner failed to blow cool air. The vehicle was taken to a local dealer, where it was determined that the A/C condenser was damaged by the debris, causing a coolant leak. The dealer stated that the condenser needed to be replaced. The contact associated the failure with NHTSA Action Number: DP26006 (Engine and Engine Cooling). The manufacturer was notified of the failure. The failure mileage was 37,000.

NHTSA ID

11764396

Incident

Aug 14, 2026

Mileage

37,000 mi

I am reporting a severe, systemic vehicle performance discrepancy on my Lexus TX 500h (2.4L Turbo Hybrid powertrain). The vehicle is officially labeled with an EPA rating of 27 MPG combined. However, under normal, conservative driving conditions, the vehicle routinely achieves only 20 to 21 MPG—a consistent 20%+ shortfall from the manufacturer's certified window sticker metrics. This has drastically limited the vehicle's safe total driving range to under 300 miles per tank. The shortfall persists despite cautious driving in Eco Mode and after passing the engine break-in period. This issue matches a widespread pattern reported by numerous other owners in consumer forums, pointing to a potential defect in the vehicle’s fuel management software or hybrid battery management logic. I request that NHTSA log this tracking data to investigate whether the manufacturer misrepresented the vehicle's real-world operational capabilities or fuel-system integration.

NHTSA ID

11762981

Incident

Sep 9, 2026

I had my foot on the brakes waiting at a red light. The car just started jerking back and forth. It didn’t stop until I released my foot off the brake.

NHTSA ID

11761621

Incident

Sep 2, 2026

I am filing this complaint regarding my 2024 Lexus TX. A road rock/debris entered through the vehicle’s factory front grille and struck/punctured the A/C condenser, causing the air conditioning system to stop functioning properly. The repair cost is approximately $2,500. The factory grille has large openings that leave the condenser vulnerable to direct impact from normal road debris. Lexus does not have a protective screen or guard that can be installed to prevent this type of damage. This design flaw has affected many other Lexus TX owners and I think they need to offer up more protective measures to avoid this from happening over and over again.

NHTSA ID

11760559

Incident

Aug 15, 2026

Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines the use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU initializes the flash reprogramming sequence.

OBSOLETE NOTICE October 28, 2026: This bulletin is now obsolete. Please see L-SB-0035-26

OBSOLETE NOTICE October 14, 2026: This bulletin is now obsolete. Please see L-SB-0033-26.

OBSOLETE NOTICE October 14, 2026: This bulletin is now obsolete. Please see L-SB-0033-26.

A new head unit software update (version 2300) is available via OTA or USB for 2022 – 2026 model year LX 600, NX 250, NX 350, and NX 350h; 2023 model year LS 500; 2023 – 2024 model year UX 250h; 2023 – 2025 model year ES 250, ES 300h, ES 350, LS 500h, RZ 300e, and RZ 450e; 2023 – 2026 model year RX 350, RX 350h, and RX 500h; 2024 – 2026 model year GX 550, LC 500, LC 500c, LC 500h, LS 500, RX 450h+, TX 350, TX 500h, and TX 550h+; 2025 model year UX 300h; 2025 – 2026 model year LX 700h; 2026 model year IS 350, RZ 350e, RZ 450e, and RZ 550e vehicles equipped with Lexus Multimedia versions older than 2300. This Software Update includes the following improvements: •User Interface •Cloud Navigation •Bug fixes Vehicle operators can perform this update directly by accepting the on-screen notification advising that the software update is available, or by locating the software update from the Settings menu and initiating the available update. The release message below will be displayed to the customer: “This software update includes improvements for User Interface, Cloud Navigation, and Bug fixes.” If it is necessary to perform the software update for a customer, follow the software update procedures in this bulletin. This is a phased rollout, which means that as time progresses, more vehicles will receive the update notification and ability to update the head unit. This timing will vary by location and may not display for every vehicle in one location at the same day/time.

Some 2024 – 2026 model year TX 350, TX 500h, and TX 500h+ vehicles may exhibit a condition where the fuel lid may not open when the release button is depressed.