2014 Acura Rlx

From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.

The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect.  During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW.  The ECU receives signals from crash sensors mounted in the vehicle and deploys the vehicle air bags and seat belt pretensioners in accordance with manufacturer design specifications.  The ECU in the subject vehicles contains a model DS84 application-specific integrated circuit (ASIC) which controls the communication of the crash sensor signal, firing commands (i.e., when to deploy the airbag(s) and/or pretensioners), and fault information (e.g., diagnostic trouble codes). In September 2016, FCA announced recall 16V-668 for certain model year (MY) 2010 to 2014 Chrysler, Dodge and Jeep products manufactured with the subject ZF-TRW ACU.  In this recall, FCA discussed an EOS condition that resulted in a failure of the subject DS84 ASIC, which caused air bag non-deployment.  FCA noted that the defect condition had only been observed in vehicles equipped with sensor harnessing routed across the front of the vehicle.  Other FCA vehicles that also used the subject ACU, but were not equipped with cross-car harnessing, had not experienced EOS failures, despite similar time in service. During the course of this investigation, ODI sent two separate Information Request (IR) letters to six vehicle manufactures (including FCA, Hyundai, Honda, Kia, Mitsubishi, and Toyota) and one IR letter to ZF-TRW.  These IR letters resulted in ODI receiving comprehensive data from these manufacturers and suppliers. Studies of this data found that the DS84 ASIC does not have sufficient protection against negative electrical transients or electrical overstress (“EOS”) that can be generated in certain severe crashes.  An electrical transient occurs when the electrical power supplied to a circuit changes momentarily over a short duration of time.   In these severe crash cases, the crash sensors and other powered wiring can be damaged and short circuited so as to create a negative electrical transient of sufficient intensity and duration (that are outside the vehicle manufacturer's specification) to damage the ASIC before the restraint device deployment signal is received by the SRS ECU.  This damaged signal can lead to incomplete or nondeployment of the air bags and/or pretensioners.  Airbag non-deployment and/or lack of pretensioner operation can increase the risk or severity of injury in a crash.A total of 8 fatalities and 14 injuries were associated with known EOS events. The common element in all investigated manufacturers vehicles is the SRS ECU containing a DS84 ASIC manufactured by ZF-TRW.  The risk associated with the ASIC is equally shared among all OEMS involved in the investigation.  The actual real-world risk can be mitigated by other factors which were assessed by ODI during this investigation. The first mitigating factor involves protections built into the ACU design which protect the DS84 ASIC from damage.  There are multiple strategies and levels of protection employed by different OEMs that provide effective EOS mitigation.  The two most common strategies at the ACU level are circuit protection diodes on the remote senor signal lines, and current limiting resistors that protect critical components. The second mitigating factor is found at the vehicle level and involves the location and routing of the wires leading from the crash sensors to the SRS ECU.  If the wires are well protected in a crash and are not routed with other power wires carrying large currents, the risk for an EOS event is significantly reduced or eliminated. These design specific factors combine to produce a spectrum of risk for the vehicles equipped with ACUs using the DS84 ASIC.  Given the many of years of field exposure, it is possible to divide the subject population into two groups; vehicles which have experienced EOS events, and vehicles which have not experienced EOS field events. Four of the six OEMs involved in this investigation have experienced EOS field events on at least one of their models equipped with a DS84 ASIC.  All vehicle models (including the Toyota models identified in the Failure Report Summary of the opening resume for this investigation) with field events have been recalled.  In an abundance of caution, ODI kept this investigation open five years to monitor field performance and did not identify any field events on vehicles not included in existing safety recalls. Given the spectrum of risk identified in this investigation and that all vehicles with a demonstrated unreasonable risk have been recalled, ODI is closing this investigation. ODI is closing this investigation with the following manufacturer safety recalls: 16V-668, 18E-043, 18V-137, 18V-363, and 20V-024.  With the recall actions taken by the subject vehicle and equipment manufacturers, this investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exists on other model or model year vehicles outside of the recall scopes. The agency reserves the right to take further action if warranted by the circumstances.

Sept of 2023 car was making a knocking noise. (128K ) Took to local Acura dealership. Told they could not find anything and told to drive the car till failure. Have 2 children and since this was a family car that was not a good idea. Insisted on tear down diagnostic to inspect problem. Metal fragments in engine oil, connecting rod on cylinder 2. Dealership suggested to replace the engine. Engine was replaced at $13k Oct 31, 2023. (invoice provided) New engine has 40k miles and is now making the same knocking noise. Dealership says rod/crank failure, suggests REPLACING ENGINE AGAIN along with heads for $35K

NHTSA ID

11743109

Incident

Jun 5, 2026

The contact owns a 2014 Acura RLX. The contact stated that while driving on the highway at an undisclosed speed, the power steering became inoperable, the vehicle steering wheel veered left or right and is misaligned. The warning lights lane departure, forward collision, all wheel steering, power steering and other warning indicators illuminated. In another occurrence, a noise could be heard. The vehicle was taken to the dealer where it was diagnosed with power steering failure. A used part for a rear wheel steering actuator was replaced.; however the issue persisted. The manufacturer was not notified of the issue. The approximate failure mileage was 130,000.

NHTSA ID

11738094

Incident

Mar 27, 2025

Mileage

130,000 mi

2014 Acura RLX Advance suffered an Engine Failure from internal bearing defect. The vehicle was meticulously maintained by Acura dealerships, and had extensive service records. While driving, the engine produced a knocking sound, then abruptly shook and died. The Engine has seized, and exactly has the same problem with Honda/Acura 3.5l V6s recalls. Diagnostics after Engine failure included inspecting Engine Turning over, Timing Belt (which was pristine) to rule out any other causes.

NHTSA ID

11732004

Incident

Nov 28, 2025

Per Acura service bulletin 23-022, Dated June 9th 2023, Acura extended a warranty on the rear steering actuators that were admitted to be “manufacturer error” parts, to extend 10 years from purchase date. In my opinion any part that is known to have manufacturer defects that effect the primary Rear wheel drive system that effects almost all safety systems on the vehicle to include limp mode on a highway needs to be replaced, this is a large safety issue. Fact; Honda admits manufacturers errors on parts. Fact; Honda recognizes the issue and issues a service bulletin. Fact; Honda extends the duration to repair the manufacturing defective part. Fact; Honda denies claims ( even when vehicle safety is a concern) after the 10 year deadline Fact; most average 2014 cars driven 12,500 miles per year have roughly 125,000 miles in 10 years and the manufacturer error was realized most likely due to usage. My 2014 now 12 years old has just recently realized the manufacturer error at 81,000 miles and Honda will not honor repairs for their errors. Facts; Google; “is it safe to drive my Acura RLX with a defective Precision all wheel steering actuator”…safety concerns realized. Facts; NHTSA is in place to keep the consumers safe and the manufacturers held accountable for repairs, let’s face it the service bulletin is just a way for manufacturers to appear proactive while turning out defective unsafe parts.

NHTSA ID

11728136

Incident

Mar 4, 2026

Rear toe actuator (PAWS system) failure causes steering instability, warning lights, and loss of control during cornering. Acura denied warranty coverage despite a known defect and VIN-based extension (TSB 23-021, 23-022).

NHTSA ID

11697542

Incident

Mar 18, 2023

I purchased a 2014 Acura RLX. It had a LKAS Problem warning when purchased. I thought that meant that feature would be disabled. No big deal. In stead I have experienced the car making abrupt jerks to the right on multiple occasions. One instance, I turned onto an on-ramp that was dual lane. There was a vehicle to the right of me and my car abruptly jerked to the right towards the other car. I was able to slow a bit before entering the interstate traffic to gain control. Another instance, I turned left onto a county road. Upon straighten my steering wheel the car made another sudden jerk to the right with my steering wheel still partially turned to the left, and several warning lights and message started appearing, including: Brake system problem, adaptive cruise control problem, brake hold system problem, power steering system problem, and vehicle stability assist problem. I have noticed a rubbing sound coming from the rear end at times when turning. There have been 3 other instances where the car was jerked to the right with no additional warning lights or warning. Luckily those times there were no other vehicles nearby and I was moving at a slower speed allowing me to be able to slow down and correct the issue. The vehicle has not been inspected yet. The vehicle has an appointment with the dealership in the next 24 hours. It is available for inspection upon request. This is a serious safety issue! My teenage kids are not safe to drive this vehicle! The vehicle is in excellent structural condition and the motor runs excellent. It sounds like the RTC actuators is a huge issue!

NHTSA ID

11687574

Incident

Sep 12, 2025

Went into limp mode on a highway in heavy traffic, car began to break rapidly decreasing in speed and would not accelerate at all. All dashboard lights came on and a CMBS notification came on. I and my family were almost rear ended by several vehicles. I am terrified to drive the vehicle and immediately pulled over to the side of the road and had vehicle towed. Also, while driving vehicle, steering wheel will randomly jerk hard to the left causing vehicle to swerve left. I Have contacted the Acura dealership and am being denied the recall.

NHTSA ID

11685357

Incident

Jun 27, 2025

The PAWS (Precision All Wheel Steering) has major issues where the system either activates suddenly when driving the vehicle, regardless of slow speeds, high speeds, going straight or turning and the back wheels suddenly turn causing the rear end to slide out. I took the vehicle to my local dealership and they said it is a known problem with this vehicle rear toe actuators and Honda has issued a warranty extension for 2013-2019 RLX to correct it. Unfortunately, this vehicle is no longer under that warranty and the only way it can be corrected is a $6800 replacement. Honda (Acura) obviously knows this is an issue but the severity is being majorly downplayed, as losing steering of a vehicle seems pretty serious to me! The vehicle cycles through multiple warning lights immediately upon the issue occurring, not before.

NHTSA ID

11680393

Incident

Jul 1, 2025

Service Bulletin - Drivers may experience a chirping sound coming from the engine area with the engine warmed up due to the high pressure fuel pump is making a chirp.

Warranty Extension - Under certain circumstances, abnormal noise may be heard from the rear when driving straight or making small side-to-side turning movements with the steering wheel. The P-AWS indicator or warning light may also illuminate with certain diagnostic trouble codes.

Owner Notification Letter - Under certain circumstances, abnormal noise may be heard from the rear when driving straight or making small side-to-side turning movements with the steering wheel. The MIL may also illuminate with certain related DTC codes.

Owner Notification Letter - Under certain circumstances, abnormal noise may be heard from the rear when driving straight or making small side-to-side turning movements with the steering wheel. The MIL may also illuminate with certain DTC codes.

Service Bulletin - Due to manufacturing errors, abnormal noise may be heard from the rear when driving straight or making small side-toside turning movements with the steering wheel. The MIL may also illuminate with DTC C1600-94 (PAWS unexpected behavior) and/or C1611-13/C1621-13 (PAWS actuator disconnection L&R).

Dealer Message - Due to manufacturing errors, abnormal noise may be heard from the rear when driving straight or making small side-to-side turning movements with the steering wheel. The MIL may also illuminate with DTC C1600-94 (PAWS unexpected behavior) and/or C1611-13/C1621-13 (PAWS actuator disconnection L&R).