Lexus NX loss of power problems

Filed Oct 19, 2026 · Fuel system · NM

"Vehicle is a 2016 Lexus NX 200t F Sport. While driving, the vehicle suffered a sudden and dangerous loss of engine power and stalled in active traffic, matching the symptoms of the major Denso low-pressure fuel pump recalls (the federal safety agency Campaign 20V‑682). The vehicle was repaired at an authorized Lexus dealership in the US at an out-of-pocket cost of $1,700. The manufacturer refuses to acknowledge the safety defect because the vehicle's VIN was originally coded for the Canadian market, despite the car being purchased, operated, and experiencing a dangerous fuel system failure inside the United States. This VIN batch needs to be investigated and swept into the active safety recall expansion."

Filed Jul 26, 2026 · Fuel system · VA

My car is going into limp mode/ reduced power and I am having misfires on cylinders 3 and 4. I’ve replaced my fuel injectors, spark plugs and catalytic converter. Everything down to the electrical has checked out good. The last issue is the fuel pump. My mechanic says there is not enough fuel going to the injectors . I have a faulty fuel pump.

Filed Jul 9, 2026 · Fuel system · 130,000 miles · GA

The contact owns a 2015 Lexus NX 200t. The contact stated that while driving at various speeds, an abnormal, ticking sound was emitted from the fuel tank. As the failure persisted, the vehicle entered "Reduced Engine Power Mode" and the check engine warning light illuminated. The vehicle was taken to an independent mechanic shop where a diagnostic check was performed, and it was discovered that the fuel pump was defective and needed to be replaced. A local dealer was contacted and an appointment was scheduled to have the vehicle serviced. The contact arrived for the appointment but was informed that the fuel pump was on backorder and the appointment needed to be rescheduled. The contact informed the dealer that driving the vehicle felt unsafe because the commute exceeded one hour. The dealer assured the contact that the vehicle was safe; however, while driving the vehicle back to the residence, the same failure returned. After restarting the vehicle, the contact drove the vehicle to the residence. A second appointment was scheduled with the dealer, and a service advisor arrived at the residence of the contact in a rental vehicle and drove the vehicle back to the dealer for service. The vehicle was returned to the contact; however, the failure persisted. The dealer was notified and informed the contact that the failure resulted from a loose panel that technicians had difficulty bolting down. The vehicle was towed back to the dealer for diagnostic testing and repair. The contact test drove the vehicle with a mechanic inside the vehicle and informed the mechanic that the same failure remained noticeable. The failure returned a few days after the repair. The contact stated that both the dealer and the manufacturer avoided phone calls to service the vehicle. The vehicle was not yet repaired. The failure mileage was approximately 130,000.

Filed Jul 7, 2026 · Engine · WA

While driving, my vehicle's check engine light came on and the vehicle entered limp mode without warning. It would not exceed 25 MPH and was stuck in 2WD, displaying the message "reduced engine power – take vehicle to nearest dealer." This created a serious safety hazard, as the vehicle could not maintain safe speed in traffic. The vehicle had to be towed to the dealership. The Lexus dealer diagnosed trouble codes P219C00, P160500, P030027, and P0301300 — cylinder #1 air/fuel ratio imbalance, rough idling, random misfire, and cylinder #1 misfire. Through active injector testing, the technician confirmed the cylinder #1 direct (high-pressure) fuel injector has failed, and recommended replacing all four direct injectors at a quoted cost of approximately $6,600. The dealer's inspection report also cited Lexus service bulletin L-SB-0007-21 for possible worn exhaust valve guides, a separate documented defect in this engine that produces these same misfire codes and limp mode, with a repair (cylinder head and valve replacement) that can exceed $10,000. Lexus has known about these failures in the 8AR-FTS engine since at least March 2021, when it issued L-SB-0007-21 covering 2018–2021 NX 300 vehicles. The bulletin acknowledges affected vehicles enter limp mode. Despite this, Lexus has not issued a recall, and owners whose vehicles fail shortly after the warranty period expires are left paying thousands of dollars for a known defect. My warranty coverage lapsed shortly before this failure occurred, and Lexus corporate declined meaningful assistance. A vehicle that suddenly cannot exceed 25 MPH on public roads is a crash risk to its occupants and surrounding traffic. I am requesting the federal safety agency investigate this defect for a potential recall.

Filed Apr 9, 2026 · Engine, Fuel system · MD

1. What component or system failed or malfunctioned, and is it available for inspection upon request? The high-pressure fuel pump and related fuel system sensor failed, resulting in a sudden loss of engine power. The failure was confirmed by diagnostic trouble codes retrieved by an independent mechanic. The vehicle is available for inspection upon request. 2. How was your safety or the safety of others put at risk? While driving at highway speeds, the vehicle suddenly lost power and became inoperable, leaving me unable to accelerate or maintain speed. This created a dangerous situation with surrounding traffic, including a truck traveling behind me, increasing the risk of a rear-end collision or crash. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. An independent mechanic retrieved diagnostic trouble codes indicating failure of the high-pressure fuel pump and related sensor. A dealership acknowledged the issue but was unable to reproduce the problem at the time of inspection because the codes had cleared. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle was inspected by an authorized dealership after being towed. No police or insurance inspections were conducted. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no significant warning signs prior to the sudden loss of power. The failure occurred unexpectedly while driving. Diagnostic codes were retrieved immediately after the incident but were no longer present during the dealership inspection.

Filed Mar 11, 2026 · Engine, Fuel system · NJ

My 2016 Lexus NX200t with approximately 157,000 miles experienced sudden engine stalling, loss of acceleration, and the check engine light illuminated while driving. The loss of power created a dangerous situation because the vehicle was unable to accelerate normally in traffic. These symptoms are consistent with the defective low-pressure fuel pump recall affecting certain Toyota and Lexus vehicles that can cause engine stall and loss of power. However, my VIN is not currently included in the recall even though my vehicle is experiencing the same safety defect. I am requesting that this issue be investigated to determine whether additional vehicles, including my model year, should be included in the recall due to the risk of sudden engine stall while driving.

Filed Feb 11, 2026 · Fuel system · FL

Car was running normally and going at 50mph then all of a sudden car abruptly lost power and went to 10mph and dashboard lit up. Very scary as we also had our kids in the car--I can only imagine how dangerous this would have been if we had been on the highway going 70mph. Dealer diagnosed with low pressure fuel pump being bad. Lexus paid for the repair due to some lawsuit settlement but these cars should be recalled due to sudden loss in power!!

Filed Dec 18, 2025 · Electrical, Engine · TX

While driving at interstate highway speed at approximately 70 mph in heavy rush hour traffic, the vehicle suddenly made a popping sound and immediately lost all engine power. The accelerator became unresponsive, and the vehicle rapidly decelerated without warning. I was forced to coast across lanes to the shoulder to avoid a collision. The engine shut down completely and the vehicle would not restart. This created a serious risk of injury or death due to loss of power in high-speed traffic. The vehicle had to be towed and is currently undrivable. Prior to this incident, the vehicle had a long history of repeated engine misfires. Spark plugs were replaced twice, and a fuel line repair was performed. Despite these repairs, the misfires continued. The sudden engine shutdown occurred without warning.

Filed Dec 3, 2025 · Engine, Transmission · SC

I am submitting this complaint to report a significant safety defect in my Lexus vehicle. Without any prior warning or history of mechanical problems, the vehicle experienced a sudden and severe loss of engine power while I was merging onto a busy highway. The vehicle rapidly decelerated despite continued acceleration input, forcing me to navigate to the shoulder while surrounding traffic was traveling at high speed. This unexpected loss of power created an immediate and substantial risk of a collision and posed a serious danger to myself and other motorists. Following this incident, I took the vehicle to a local auto shop, which identified diagnostic code P030002, indicating a misfire in Cylinder 2. I then promptly brought the vehicle to an authorized Lexus dealership. Their diagnostic confirmed the same code and attributed the failure to a “Cylinder 2 direct fuel injector leaking.” Lexus has already acknowledged this defect in TSB L-SB-0007-21, demonstrating that the manufacturer is aware of this recurring issue. My vehicle is five years old with fewer than 100,000 miles, yet this defect resulted in a dangerous loss of engine power under highway conditions. The dealership quoted over $3,000 to replace a single injector, and the remaining injectors may fail at any time, further compounding the safety risk. Despite its knowledge of this defect, Lexus has not issued a recall, implemented preventive measures, or offered assistance, citing that the vehicle is slightly outside the 70,000-mile warranty. I have therefore been left with a vehicle that is unsafe for continued highway operation. Given the severity of the incident, the known recurrence of this defect, and the manufacturer’s lack of corrective action, I respectfully request that the federal safety agency investigate this matter, as it presents a substantial and ongoing hazard to consumers and the driving public.

Filed Aug 30, 2025 · Electrical, Engine · CA

Vehicle: 2024 Lexus NX 450h+ (plug-in hybrid) Odometer at latest event: ~14,600 miles Dealer: Motor City Lexus of Bakersfield (Bakersfield, CA) Lexus Corporate Case #: 250823001008 Complaint Description: While driving, the vehicle suddenly lost all electrical power without warning on two separate occasions, causing the instrument cluster to go dark and an immediate loss of power steering and brake assist. I had to coast to a stop—this is a serious crash risk. Timeline of events: • 08/20/2025 – In-motion total electrical blackout with loss of steering/brake assist at approximately [speed] mph. • 08/21/2025 – Dealer replaced the 12-volt battery. • 08/23/2025 – Repeat in-motion blackout with my children in the vehicle; dash went dark, loss of steering/brake assist, coasted to a stop. • After 08/23/2025 (at dealer) – During diagnostic testing, a dealer technician reproduced the same failure (total electrical power loss while moving, dash dark, loss of steering/brake assist). This confirms a repeatable safety defect. • There have also been three additional immobilizations that required Lexus Roadside Assistance on other dates. Current status: Vehicle remains at the dealer for the second repair attempt. I am within the 18-month window from delivery (Mar/Apr 2024). Safety concern / suspected area: Sudden total electrical loss while driving with loss of steering/brake assist. Please investigate potential defects in the 12-V/DC-DC charging system, hybrid/electrical system (inverter/DC-DC/grounding), main fusible link, or related wiring/connectors/grounds that could cause complete power loss while the vehicle is in motion.