2012 Acura TSX

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.

Steering system failed-safety was a risk because wheel was very hard to turn-calling the dealer on Monday. Warning light came on right before the steering failed.

NHTSA ID

11754221

Incident

Aug 1, 2026

Traction control didn’t work, and the large OEM seats did not hug my body as advertised, causing bodily injury when struck by another vehicle, “t-bone” on passenger side.

NHTSA ID

11711549

Incident

Sep 16, 2025

On two occasions my college aged daughter was driving this vehicle when the steering wheel became inoperative. There was an error message on the dash about checking the power steering system. There was also an icon displaying with a steering wheel. Luckily she was only in a parking lot when this happened and was able to stop. SHE WAS GETTING READY TO DRIVE ON THE INTERSTATE. Had she reached the interstate she would have been in a bad accident. Come to find out this is a known issue with the electric power steering system and Acura has extended the warranty. But this should be a recall!

NHTSA ID

11669981

Incident

Jun 28, 2025

2012 Acura TSX Sportwagon: Brought car to independent mechanic who diagnosed power steering failure as requiring replacement of "Power Steering Control Module". Acura has a "TSB" or "Technical Service Bulletin" #19-021 regarding this issue. The car is very difficult to steer and is dangerous to drive because the driver is unable to steer quickly. Also the turning radius is essentially reduced as well. An Acura dealer is scheduled to examine the vehicle on 6/20/2025. The failure first appeared around the beginning of June 2025. There is a persistent audible chime along with (3) blinking warning lights (Steering wheel with exclamation point, the letter "i" with a circle around it, and the message "Check Power Steering System" message). This car is available for inspection upon request.

NHTSA ID

11667466

Incident

Jun 1, 2025

A "Check Power Steering" light on the dashboard came on suddenly leaving me unable to steer the car at all. After re-starting the car several times, the light went off. The car manual indicated pumping the accelerator may cause this symptom, and--given the light had gone off--I drove the car home. However, after trying again to drive the car, the light is back on. Online Acura forums indicate there is a common issue with the EPS control unit but no recall has been issued even though American Honda Motor Co may have sent out letters to some owners indicating the possibility to receive reimbursement for the EPS control unit. (I did not receive this letter.)

NHTSA ID

11663322

Incident

May 22, 2025

While driving at highway speeds, the A-pillar trim on the passenger side of my Acura TSX Wagon's windshield flew off the car today as a gust of wind hit the vehicle. I had just cleaned the windshield that morning in preparation for my road trip and nothing appeared loose. While driving for over two hours, nothing had rattled or sounded strange. And then all of a sudden, a crack noise and something hits the windshield and flies over the car. I almost hit the car next to me due to the suddenness. The trim piece flew behind the vehicle and had traffic been heavier, it could have hit a car behind me. So that could have been two accidents caused. This car has been amazing and I am the original owner. I am troubled now though seeing the number of people online (see Acura forums) having this issue as their TSX's age. There is also another NHTSA complaint with this exact same issue, and there have been two Acura TSBs regarding this already (see 09-030 and 09-016). As thousands of TSXs age along with the apparent "glue" holding this piece on the car, motorists across the nation are at risk of this flying projectile. Thus, I am writing this complaint in the name of public safety even though I truly love my TSX wagon.

NHTSA ID

11633537

Incident

Jan 1, 2025

Driving on the freeway. Going 65-70mph EPS (electric power steering) indicator light came on. A message was also sent in inbox of car stating code such as 32 and 61. Steering wheel became stiff and was difficult to steer when car not moving. Went to auto zone to check out if there was any code and there was none. I change to a new battery and check steering fuse everything seem fine with charging system. I did research and found out there was many vehicle like mine that have the same issue. Also, look at Acura forums and some said there was a recall with the EPS. Please help me figure out this issue. Thank you.

NHTSA ID

11611730

Incident

Aug 28, 2024

Check engine Transmission ABS VSA TPMS All lights went on suddenly. While I was driving suddenly all lights came on dashboard. I’ve used OBD scanner to find the root cause but the problem can’t be detected. I went to Acura dealer in NJ and paid $250. They inspected, and said it could be this Instrument cluster or that ECu. But they did not said anything concrete what could be faulty. Both are expensive to replace around $2000-$4000 each The lights comes and goes. These lights are not persistent. I’ve been driving with it. Sometimes when the lights are on AC DOESNT WORK, steering loses control for a second. When it loses control car swerves. It’s dangerous but I’ve been driving with caution ⚠️ In past, electric power steering was malfunction and I had it replaced for $1500. I will never purchase Acura or Honda for lifetime It should be recalled

NHTSA ID

11603279

Incident

May 1, 2024

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2009-2014 TLs, TSXs & TSX Wagons with a client complaint of the brake pedal feeling soft or spongy when depressed, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2009-2014 TLs, TSXs & TSX Wagons with a client complaint of the brake pedal feeling soft or spongy when depressed, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2009-2014 TLs, TSXs & TSX Wagons with a client complaint of the brake pedal feeling soft or spongy when depressed, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2009-2014 TLs, TSXs & TSX Wagons with a client complaint of the brake pedal feeling soft or spongy when depressed, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2009-2014 TLs, TSXs & TSX Wagons with a client complaint of the brake pedal feeling soft or spongy when depressed, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

Service Bulletin - This bulletin is a notification of a class action settlement relating to airbag inflators. American Honda is offering a Customer Support Program (Warranty Extension) to cover any manufacturing defects in the replacement front passenger's airbag inflator only.