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Acura · Known Issues

2024 Acura TLX Problems: 6 Known Issues

2024 model year · 780+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 780+ owner reports, the 2024 Acura TLX has 6 documented known issues, with 3 rated critical. The most serious are UB5 SH-AWD Transmission-to-Transfer Case (PTU) Spline Shear and Total AWD Loss ($5,000-$19,000 repair), Fuel Filler Neck to Tank Weld Defect Causing Fuel Leak (Recall 24V950000) ($0-$0 repair) and Brake Pedal Pivot Pin Improperly Secured, Pedal Shifts Out of Position (Recall 25V391000) ($0-$0 repair). The most commonly reported issue is Type S Brembo Front Brake Squeal and Premature Pad Wear with 780 owner reports. Across all issues with published estimates, repair costs range from $150 to $19,000. DIY maintenance guides at au7o.io.

In This Article

  • TLX Brakes2
  • TLX Drivetrain1
  • TLX Fuel System1
  • TLX Suspension1
  • TLX Engine1
  • Recalls5
  • FAQ
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In This Article

  • Brakes2
  • Drivetrain1
  • Fuel System1
  • Suspension1
  • Engine1
  • Recalls5
  • FAQ

All 6 Known Issues

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ALL YEARS20252024202320222021202020192018201720162015

On the 2021-2025 Acura TLX, second-generation TLX models were built with the brake pedal pivot pin not secured properly. The pin can migrate, letting the pedal shift out of its correct position on the pedal bracket. When that happens the driver's input no longer translates properly to the master cylinder and braking can be prevented or badly reduced. Honda recalled 2021-2025 Acura TLX alongside 2023-2025 Acura MDX and 2023-2025 Honda Pilot under 25V391000, with owner letters mailed July 29, 2025 - a campaign covering roughly a quarter-million vehicles. Independent of the recall, NHTSA complaints on UB5 cars describe a sticky or inconsistent brake pedal and pedal-feel changes that dealers initially dismissed as 'working as designed' before the recall issued.

Common Symptoms

  • Brake pedal feels loose or shifts sideways underfoot
  • Pedal sits at a different height or angle than normal
  • Sticky or inconsistent brake pedal travel
  • Reduced braking response for a given pedal effort
  • Clicking or knocking from the pedal box

How to Fix

VIN-check recall 25V391000. The free remedy is a dealer inspection of the brake pedal assembly with replacement of the assembly where the pivot pin is not correctly secured. Do not drive a car whose brake pedal feels laterally loose, sits at a different height than before, or catches/sticks - have it towed. If a dealer previously told you a sticky or shifting pedal was normal, go back with the campaign number; the recall supersedes that assessment.

Typical repair cost:$0 - $0

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
780 owners

On the 2021-2025 Acura TLX 3.0L V6 Turbo, the 2021–2025 TLX Type S and Type S PMC use a fixed front Brembo brake system whose performance-oriented pad compound can squeal during light braking and wear unevenly if pad-retaining hardware or contact points corrode. This does not apply to the A-Spec brake system.

Common Symptoms

  • High-pitched squeal during light braking
  • Inner pad wearing faster than outer pad
  • Grinding noise after rain or car wash
  • Brake dust buildup heavier on one wheel

How to Fix

Remove the front pads and inspect the fixed Brembo calipers, pad-retaining pins, springs, shims, and pad contact points. Clean corrosion and apply brake-specific high-temperature lubricant only where the service procedure permits, never on a friction surface. Replace worn pads with a Type S front ceramic or equivalent application and replace damaged retaining hardware or shims.

2 part options are hidden until exact year, trim, and engine fitment can be confirmed.
Typical repair cost:$150 - $500

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Based on 780 owner reports

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Community Reported
High Confidence780 owner reportsLast reported by owners Jan 2026Reviewed Mar 2026

On the 2021-2024 Acura TLX, on the second-generation (UB5) TLX with SH-AWD, the splined interface between the 10-speed transmission output and the power transfer unit (transfer case) strips or shears. Owners describe a loud pop, bang or clunk from underneath, after which the car silently reverts to front-wheel drive - critically, with NO dashboard warning light and no stored DTC, so the driver often does not know AWD is gone until the car oversteers in a corner or in rain. Many cases are preceded by a fluid leak from the transmission-to-differential seal or brown sludge in the fluid. NHTSA opened defect petition DP26001 on March 6, 2026 specifically covering loss of all-wheel drive in 2021-2023 Acura TLX due to transmission-to-PTU spline failure. Complaint mileages span roughly 8,000 to 100,000 miles, including many inside the factory warranty. Owners report the replacement PTU is already on its third revision (part 29000-5YK-070) with no TSB issued, and that parts sit on national backorder for weeks. Documented repair costs range from about $5,000 to $19,000 because the transmission usually has to be replaced along with the transfer case. This is a UB5 SH-AWD failure - it is not the first-generation SH-AWD rear drive unit.

Common Symptoms

  • Loud pop, bang or clunk from underneath the car
  • Sudden loss of rear-wheel drive with no warning light
  • Car drives as front-wheel drive only; noticeable oversteer in corners and rain
  • Slow initial acceleration below 5 mph until the system recognizes FWD-only operation
  • Fluid leak from the seal between the transmission and the transfer case/differential
  • Brown sludge or metallic debris in the transmission fluid
  • Grinding or whining from the transfer case area

How to Fix

There is no recall remedy as of this writing; the matter sits with NHTSA as defect petition DP26001, so file a complaint at nhtsa.gov if affected - petition outcomes depend on complaint volume. The dealer fix is replacement of both the power transfer unit and the transmission (the transmission output splines are usually damaged too); inside the 6yr/70k powertrain warranty this is covered, and several out-of-warranty owners have obtained partial coverage under Acura's 'one-time goodwill' provision. Early warning is the fluid leak: have the transmission/PTU seal area inspected at every service, and treat any leak or metallic debris in the fluid as a reason to open a warranty claim before the splines let go. Owners should not assume AWD is working - there is no warning lamp for this failure.

Typical repair cost:$5,000 - $19,000

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2023-2025 Acura TLX, late second-generation TLX vehicles were built with the fuel filler neck improperly welded to the fuel tank. The defective weld can allow fuel to leak from the tank assembly, and a fuel leak in the presence of an ignition source is a fire risk. Honda recalled affected 2023-2025 Acura TLX under 24V950000 with a full fuel tank assembly replacement as the remedy. Because the leak originates at the filler neck joint, owners typically smell raw fuel around the right rear of the car or see wetness or staining near the filler area, most noticeably after filling the tank completely.

Common Symptoms

  • Raw fuel smell around the right rear of the vehicle
  • Fuel wetness, staining or dripping near the filler neck
  • Fuel odor strongest after filling the tank to full
  • Unexplained fuel loss
  • Evaporative system fault codes

How to Fix

VIN-check recall 24V950000. The remedy is free replacement of the entire fuel tank assembly by an Acura dealer (1-888-234-2138). If you smell fuel or see wetness at the right rear of the vehicle, stop refueling to a full tank, park outdoors away from structures, and have the car inspected immediately rather than waiting for a scheduled appointment. Note that this is a separate campaign from the in-tank fuel pump recalls - a car can be open on both.

Typical repair cost:$0 - $0

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026

On the 2021-2025 Acura TLX, second-generation TLX models equipped with the Adaptive Damper System (A-Spec and Type S) suffer damper control failures traced to corrosion in the suspension stroke sensor wiring harnesses and to rear shock solenoid failures. The car throws an Adaptive Damper System warning and defaults the dampers to a fixed setting, which owners describe as a harsh, uncontrolled ride and loss of the Comfort/Sport differentiation. NHTSA filings on the 2021 TLX cite specific fault codes C1646-14 and C1647-14 alongside corroded stroke sensor harnesses, and the same complaint set includes front suspension squeaking and creaking. Because the sensors and harnesses sit low in the wheel wells, cars in road-salt regions fail earliest. This is UB5-only equipment; first-generation TLX did not offer adaptive dampers.

Common Symptoms

  • Adaptive Damper System warning message on the dash
  • Ride quality stuck harsh regardless of drive mode
  • No perceptible difference between Comfort and Sport modes
  • Front suspension squeaking or creaking over bumps
  • Rear damper unresponsive
  • Corroded connector at the suspension stroke sensor

How to Fix

Scan for the adaptive damper codes - a C1646/C1647 with a -14 subtype points to a short-to-ground or open circuit, which on these cars is usually the stroke sensor harness or its connector rather than the damper itself. Inspect the sensor pigtails and connectors at each corner for green corrosion and chafing; repairing or replacing a harness is a few hundred dollars where replacing a damper assembly runs well over a thousand per corner. Rear solenoid failures do require the shock assembly. Confirm the shop clears the codes and road-tests through all drive modes; a stored historic code will keep the system defaulted. Cars still inside the 4yr/50k new vehicle warranty should have this covered - there is no recall.

Typical repair cost:$350 - $2,500

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026

On the 2021-2025 Acura TLX 2.0L turbocharged I4, the base second-generation TLX uses a 2.0L turbocharged four with a front-mounted air-to-air intercooler. In humid, rainy or cold-and-damp conditions, water vapor condenses inside the intercooler and charge piping, pools, and is then slugged into the intake on a throttle transition. The result is a sudden multi-cylinder misfire, a stumble or hard bucking under acceleration, and in many cases a drop into limp mode with reduced power until the ignition is cycled. NHTSA complaints on the 2021 TLX describe 'turbo intercooler water vapor accumulation causing misfires and limp-mode activation during humid/rainy conditions' and sudden power loss during acceleration. This is specific to the turbocharged four - the Type S 3.0T uses a different charge-air layout, and the first-generation naturally aspirated engines have no intercooler at all.

This issue also affects: Acura Integra, Acura MDX, Acura RDX

Common Symptoms

  • Sudden misfire and bucking under acceleration in rain, fog or high humidity
  • Check engine light with random/multiple cylinder misfire codes
  • Limp mode with reduced power until the ignition is cycled
  • Symptoms absent in dry weather
  • Water audible sloshing in the charge piping
  • Puff of white vapor from the exhaust on the misfire event

How to Fix

Have misfire codes read - random/multiple-cylinder misfire codes appearing only in wet or humid weather, with no fuel-trim or ignition fault, point to condensation rather than coils or plugs. Do not let a shop replace coils and plugs as a first move on a weather-correlated misfire. The dealer path is an ECU/PCM software update where one is available for your VIN plus inspection of the intercooler and charge piping for pooled water and for a low spot or sagging hose that traps it; correcting charge-pipe routing and clearing any blocked intercooler drain resolves most cases. Recurrent cases are addressed with an intercooler assembly replacement under the 4yr/50k warranty. Avoid aftermarket 'fixes' that drill the intercooler - they create a boost leak.

Typical repair cost:$0 - $1,400

Research This Issue

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026
NHTSA Recalls5 recalls

SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

Honda (American Honda Motor Co.) is recalling certain 2021-2025 Acura TLX, 2023-2025 Acura MDX, and 2023-2025 Honda Pilot vehicles. The brake pedal pivot pin was not secured properly, which can cause the pedal to shift out of position. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard numbers 108, "Lamps, Reflective Devices, and Associated Equipment" and 135, "Light Vehicle Brake Systems."

Campaign #25V39100012/06/2025

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

Acura (American Honda Motor Co.) is recalling certain 2021-2023 TLX vehicles. The fuel filler neck and fuel tank may have been improperly welded, which can result in a fuel leak.

Campaign #24V95000019/12/2024

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

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Other Acura Models

Acura Integra19Acura RDX17Acura TL14Acura RSX14Acura MDX12Acura ILX12

Frequently Asked Questions

What are the most common Acura TLX problems?

According to Au7o's analysis of 780+ owner reports, the 2024 Acura TLX has 6 documented issues. The most frequently reported are: UB5 SH-AWD Transmission-to-Transfer Case (PTU) Spline Shear and Total AWD Loss, Fuel Filler Neck to Tank Weld Defect Causing Fuel Leak (Recall 24V950000), Brake Pedal Pivot Pin Improperly Secured, Pedal Shifts Out of Position (Recall 25V391000). Of these, 3 are rated critical and should be addressed promptly.

Is the Acura TLX reliable?

The 2024 Acura TLX has 6 known issues documented across 780+ owner reports. 3 issues are rated critical: UB5 SH-AWD Transmission-to-Transfer Case (PTU) Spline Shear and Total AWD Loss and Fuel Filler Neck to Tank Weld Defect Causing Fuel Leak (Recall 24V950000) and Brake Pedal Pivot Pin Improperly Secured, Pedal Shifts Out of Position (Recall 25V391000). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Acura TLX problems?

Repair costs for known Acura TLX issues range from $0 to $19,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, UB5 SH-AWD Transmission-to-Transfer Case (PTU) Spline Shear and Total AWD Loss, typically costs $5,000-$19,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2021-2024 Acura TLX UB5 SH-AWD Transmission-to-Transfer Case (PTU) Spline Shear and Total AWD Loss?

On the second-generation (UB5) TLX with SH-AWD, the splined interface between the 10-speed transmission output and the power transfer unit (transfer case) strips or shears. Owners describe a loud pop, bang or clunk from underneath, after which the car silently reverts to front-wh… Repairs typically run $5,000-$19,000. Severity: high.

What is the 2023-2025 Acura TLX Fuel Filler Neck to Tank Weld Defect Causing Fuel Leak (Recall 24V950000)?

Late second-generation TLX vehicles were built with the fuel filler neck improperly welded to the fuel tank. The defective weld can allow fuel to leak from the tank assembly, and a fuel leak in the presence of an ignition source is a fire risk. Honda recalled affected 2023-2025 A… Repairs typically run $0-$0. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 780+ owner reports, NHTSA recalls, TSBs, and automotive forums.

Campaign #26V33200021/05/2026

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura RDX, and 2020-2021 Acura TLX vehicles. The front passenger seat weight sensor may crack and short circuit, failing to suppress the air bag as intended.

Campaign #24V06400001/02/2024

TIRES:BEAD

Honda (American Honda Motor Co.) is recalling certain 2022 Acura TLX vehicles. The tires may have sustained cuts and tears during the sorting process, which can result in tire damage.

Campaign #22V95000022/12/2022

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 2021-2025 Acura TLX Brake Pedal Pivot Pin Improperly Secured, Pedal Shifts Out of Position (Recall 25V391000)?

Second-generation TLX models were built with the brake pedal pivot pin not secured properly. The pin can migrate, letting the pedal shift out of its correct position on the pedal bracket. When that happens the driver's input no longer translates properly to the master cylinder an… Repairs typically run $0-$0. Severity: high.

What is the 2021-2025 Acura TLX UB5 Adaptive Damper System Failure from Stroke Sensor Harness Corrosion?

Second-generation TLX models equipped with the Adaptive Damper System (A-Spec and Type S) suffer damper control failures traced to corrosion in the suspension stroke sensor wiring harnesses and to rear shock solenoid failures. The car throws an Adaptive Damper System warning and… Repairs typically run $350-$2,500. Severity: medium.

What is the 2021-2025 Acura TLX 2.0L Turbo Intercooler Condensation Ingestion Causing Misfire and Limp Mode?

The base second-generation TLX uses a 2.0L turbocharged four with a front-mounted air-to-air intercooler. In humid, rainy or cold-and-damp conditions, water vapor condenses inside the intercooler and charge piping, pools, and is then slugged into the intake on a throttle transiti… Repairs typically run $0-$1,400. Severity: medium.

What is the 2021-2025 Acura TLX Type S Brembo Front Brake Squeal and Premature Pad Wear?

The 2021–2025 TLX Type S and Type S PMC use a fixed front Brembo brake system whose performance-oriented pad compound can squeal during light braking and wear unevenly if pad-retaining hardware or contact points corrode. This does not apply to the A-Spec brake system. Repairs typically run $150-$500. Severity: low.