2014 Lexus Ct

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.

Brake booster stopped working. Brake efficiency declined, ABS and stability control stopped working. Brake master cylinder and brake booster had to be replaced.

NHTSA ID

11720696

Incident

Dec 16, 2025

The vehicle's Brake Booster Pump Assembly and Brake Accumulator are exhibiting signs of imminent failure. While the vehicle is in "READY" mode and stationary (in Park), the brake booster pump cycles on and off at an abnormally high frequency (every 15-30 seconds). Additionally, an audible hissing or "squawking" noise can be heard from the brake actuator assembly after the pump cycles, indicating an internal pressure leak within the accumulator. This condition creates a significant safety hazard. If the brake booster pump fails due to this excessive cycling caused by the internal leak, the vehicle will experience a sudden loss of power braking assist. This would result in an unexpectedly hard brake pedal and significantly increased stopping distances, drastically increasing the risk of a crash. Lexus/Toyota has acknowledged this specific defect in Customer Support Program 24LE01 (DTCs C1391, C1252, C1256), identifying it as an "internal malfunction." However, the manufacturer has limited the coverage to 10 years from the date of first use. My vehicle, with only approximately 62,000 miles, is exhibiting these known failure symptoms just outside this arbitrary time window. A safety-critical component like the braking system should not fail at such low mileage, and the manufacturer should address this design defect via a Safety Recall rather than a time-limited warranty extension that leaves owners of low-mileage vehicles with a dangerous defect.

NHTSA ID

11710830

Incident

Jan 12, 2026

common problem with these Lexus ct200h, as well as Toyota Prius V models, are that the brake accumulators begin to leak internally, as they share the same part numbers. Therefore, the actuator will buzz every few seconds trying to keep pressure in the braking system to a safe operating level of gas pressure to no avail due to this leak in the actuator. After it quits buzzing from shutting the car off, you can hear the air leak hissing the pressure away. There are tons and tons of articles on this issue online as this is a major safety concern. Many have had Toyota replace the part free of charge as well due to the extended 10 year, or 150k miles, in whichever comes first. warranty. This may be perhaps because there are several more prius on the road than this rare Lexus CT200H. Just look up “c1391 danger” and see what comes up. In my opinion, as well as many, it is pathetic that an issue in which endangers the lives of others due this brake failure is not further addressed. There is Not much stopping distances when and after this suddenly occurs. In the process, the abs, traction control, brake, a yellow exclamation mark, lights suddenly all come on the dash at once and the brake feels like a sponge very suddenly, as it did me as I was driving today. There were no engine lights as I started my drive. There are no external brake fluid leaks involved for this actuator. Toyota covers it under extended warranty, although it appears as though Lexus does not, this is a major safety hazard and concern. The trouble code is.: C1391. Also, I went to Sewell Lexus of Dallas today and was told there are no recalls, after looking my vin #. The service program had expired and there is nothing they can do for me. Please extend the program or issue a recall for this dangerous failure. The repair cost is substantial and should be covered for a known flaw.

NHTSA ID

11679184

Incident

Aug 7, 2025

I’m reporting a serious safety issue with my 2014 Lexus CT200h involving the brake booster and ABS pump/accumulator system. This issue is well-documented across Lexus CT200h and Toyota Prius V models, which use the same components. Lexus quietly issued a Customer Support Program (CSP) for the affected part but never notified me. I contacted Lexus and was told they “didn’t have to” notify all owners. After escalating, they claimed a letter was sent, but I confirmed my address and never received anything. Several months before the CSP expired, I noticed inconsistent brake response, a soft/spongy pedal, and warning lights: ABS, traction control, brake, and TPMS. I took the car to an independent mechanic who misdiagnosed it as a TPMS issue. Six months later, a loud chime began sounding repeatedly, unrelated to seatbelt use. I brought the car to Lexus of North Miami, where they diagnosed a failing ABS pump and accumulator — the exact components covered by the CSP. This is a critical safety failure. Loss of braking pressure compromises stopping distance and puts my safety and others at risk. Lexus refused assistance because the CSP expired, even though the problem began earlier and I sought help. Corporate and their Resolution Team were dismissive and unprofessional. The issue is reproducible and confirmed by a certified Lexus dealer. Thousands of drivers online report the same pattern: trouble code C1391, buzzing brake actuator, unexplained chimes, hissing noises after shutdown, and external fluid leaks. Some dealers reportedly told customers to disable the chime rather than investigate. Toyota Prius owners with the same part received repairs under warranty or recall — Lexus drivers did not. I urge NHTSA to investigate this defect before it leads to serious injury or death. This is not normal wear. It’s a known mechanical failure affecting a critical safety system. What makes this even more dangerous is that most owners won’t do the deep digging I did to connect it.

NHTSA ID

11677841

Incident

Dec 1, 2024

ABS, TRACTION CONTROL , BRAKE, A YELLOW EXCLAMMATION POINT, RED BRAKE LIGHT ALL COME ON, AS WARNING LIGHTS ON THE DASH BOARD, AND THE BREAKS START TO FEEL SPONGEY AND NOT WORK AS WELL. THE ACTUATOR STARTS TO BUZZ EVERY FEW SECONDS TRYING TO KEEP PRESSURE IN THE BRAKING SYSTEM, BUT IT CANNOT DUE TO A LEAK IN THE ACCUATOR, IN WHICH THEN CAUSES THE ABS SYSTEM TO DEACTIVATE, A KNOWN PROBLEM OF THE LEXUS CT200H, MANY OF THE OTHER LEXUS HAD THIS PROBLEM AS A RECALL AS WELL- LEXUS SHOULD BE FIXING THIS FOR PEOPLE ITS A MAJOR SAFETY ISSUE THAT THE BRAKES START TO NOT WORK OUT OF NO WHERE AND ITS NOT FAIR TO THE OWNER TO BE RESPONSIBLE FOR THIS ENORMOUS BILL TO FIX WHEN ITS A KNOWN PROBLEM OF LEXUS! IT STATES ONLINE ALL OVER THE PLACE THAT CT200H VEHICLES MAY HAVE BRAKE, ABS AND OR TRAC WARNING LIGHTS ON OR A CHECK VSC MESSAGE DISPLAYED DUE TO A SMALL BRAKE FLUID LEAK INSIDE THE BRAKE BOOSTER ASSEMBLY WITH MASTER CYLINDER, ABS ACTUATOR FAILURE, AND ONLINE LISTS ALL THE CODES. IT SAYS IF THE CONDITION IS VERIFIED THE VEHICLE WILL BE REPAIRED WITH NEW BRAKE BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLIES BUT NOT ALL LEXUS ESTABLISHMENTS ARE COOPERATING WITH THIS, AND ITS NOT SAFE!

NHTSA ID

11612199

Incident

Aug 31, 2024

The brake accumulator loosing pressure for the brake booster and abs, the actuator will buzz every few seconds trying to keep pressure in the braking system to a safe operating level of gas pressure. It isn't holding pressure due to this leak in the actuator. This is a very serious issue which endangers the lives of others due this brake failure is not being fully addressed. There is not much stopping distances after this suddenly occurs. In the process, the abs, traction control, brake, a yellow exclamation mark, lights suddenly all come on the dash at once and the brake feels like a sponge very suddenly, and the car has little to no brakes. This can lead to a major accident. Toyota/ Lexus have an extended warranty that expires in at a 10 year mark or 150K miles but several complaints of this failure has been just after that time usually with in a few months and come at a high cost of repair almost $3-4K, fortunately I searched the internet for the warranty info and my vehicle is just under the warranty period by a few days and couple miles but the amount of people who currently drive these Toyota/Lexus models that may experience this failure is pretty high

NHTSA ID

11594016

Incident

Jun 1, 2024

C1391 error code All brake dash lights (abs, parking brake, !) came on and brakes would not stop. I had to put my foot the floor to get the car stopped. No warning at all, lights came on and brakes instantly malfunctioned

NHTSA ID

11585480

Incident

Apr 26, 2024

Engine started misfiring recently at engine cold start and from hybrid transition to engine startup. Engine light came on with reports codes P0302 and P0304. Additionally, another error code P0607 also was detected. Had a certified mechanic assess the car and replaced the four coils for the CT200h. No change in issue. New issue developed this past Monday with an engine temperature light flashing on. Stopped and put a half liter in the coolant reservoir. Engine temperature light did not come back on. Took the car to a certified mechanic and told him to pressure test the coolant system. The mechanic confirmed the head gasket is blown. In the Lexus CT200h online forum there is a clear and compelling case that the EGR malfunctioned and directly contributed to the head gasket blowing. This car has approximately 128,000 miles. I would encourage you to read the Lexus CT 200h forum.

NHTSA ID

11585050

Incident

Apr 22, 2024

The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicle surface, especially the horizonal areas of the hood, roof, and decklid, significant damage can occur. This damage is the result of actual etching of the paint and appears as pitting or water spots. As acid rain droplets on the vehicle surface evaporate, the concentration strength of the acid increases, causing deeper and more rapid damage. This evaporation and corrosive action also occur more rapidly on dark colored cars as direct sun heat increases. While Lexus paint quality, durability, and resistance to environmental factors is continuously being improved, it remains the responsibility of the dealer to protect and maintain the vehicle’s paint finish from the time of arrival at the dealership until retail delivery to the customer. In areas known for high frequency and/or concentration of acid rain, frequent vehicle washing during high heat or humidity periods will minimize the potential for paint damage caused by acid rain. It is further recommended that either reverse osmosis or deionized water be used to prevent water spotting. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. BO029-91. •The entire bulletin has been updated. Service Bulletin No. BO029-91 is obsolete

The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicle surface, especially the horizonal areas of the hood, roof, and decklid, significant damage can occur. This damage is the result of actual etching of the paint and appears as pitting or water spots. As acid rain droplets on the vehicle surface evaporate, the concentration strength of the acid increases, causing deeper and more rapid damage. This evaporation and corrosive action also occur more rapidly on dark colored cars as direct sun heat increases. While Lexus paint quality, durability, and resistance to environmental factors is continuously being improved, it remains the responsibility of the dealer to protect and maintain the vehicle’s paint finish from the time of arrival at the dealership until retail delivery to the customer. In areas known for high frequency and/or concentration of acid rain, frequent vehicle washing during high heat or humidity periods will minimize the potential for paint damage caused by acid rain. It is further recommended that either reverse osmosis or deionized water be used to prevent water spotting. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. BO029-91. •The entire bulletin has been updated. Service Bulletin No. BO029-91 is obsolete

TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating, inspecting, and repairing refrigerant leaks.

Lexus Safety Recall and Service Campaign - Technician Certification Requirements 4.13.2022

POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Lexus. This information must be kept near the point of vehicle sale and be available to any customer that requests it. Customers can find this information on the Owner?s section of Lexus.com. Dealers can locate a copy of this guide on the Claims Processing & Resource Center in Dealer Daily as well.

POL: UPDATES TO THE 2014-2021 LEXUS UNIVERSAL FLAT RATE MANUAL