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Acura · Known Issues

2007-2025 Acura RDX Problems: 17 Known Issues

2007-2025 model years · 5,380+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 5,380+ owner reports, the 2007-2025 Acura RDX has 17 documented known issues, with 5 rated critical. The most serious are Front Seat Belt Buckle Fails to Latch from Misformed Buckle Channel (Recall 23V158) ($0-$0 repair), VSA Modulator Ball Valve Leaks Brake Fluid Causing Long Pedal and Brake Hold Rollaway (Recall 23V430) ($0-$0 repair), Takata Driver's Frontal Airbag Inflator Rupture (Safety Recall) ($0-$0 repair), J35 VCM Cylinder Deactivation Causing Oil Consumption and Rear-Bank Spark Plug Fouling ($180-$4,500 repair) and Denso Low-Pressure Fuel Pump Impeller Swells and Seizes Causing Stall (Recall 23V858) ($0-$0 repair). The most commonly reported issue is True Touchpad Interface Infotainment Reboots and Lag with 1,600 owner reports. Across all issues with published estimates, repair costs range from $40 to $4,500. DIY maintenance guides at au7o.io.

In This Article

  • RDX Safety/Recalls2
  • RDX Engine3
  • RDX Brakes2
  • RDX Fuel System1
  • RDX Transmission3
  • RDX Electrical2
  • RDX HVAC1
  • RDX Drivetrain1
  • RDX Emissions1
  • RDX Body/Panels1
  • Recalls6
  • FAQ
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In This Article

  • Safety/Recalls2
  • Engine3
  • Brakes2
  • Fuel System1
  • Transmission3
  • Electrical2
  • HVAC1
  • Drivetrain1
  • Emissions1
  • Body/Panels1
  • Recalls6
  • FAQ

All 17 Known Issues

NHTSA Recalls6 recalls

STEERING:ELECTRIC POWER ASSIST SYSTEM

Honda (American Honda Motor Co.) is recalling certain 2025 Acura RDX vehicles. The software for the electric power steering (EPS) assist may not be calibrated properly, which can cause the EPS system to enter a failsafe mode, resulting in a loss of power steering assist.

Campaign #25V58200005/09/2025

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

Honda (America Honda Motor Co.) is recalling certain 2023 Civic, Acura RDX, Acura Integra, and 2022 Honda Accord vehicles. A ball valve in the vehicle stability assist (VSA) modulator may leak brake fluid, which can result in unintended vehicle movement when the brake hold feature is engaged or an unexpected increase in brake pedal travel.

Campaign #23V43000015/06/2023

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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Frequently Asked Questions

What are the most common Acura RDX problems?

According to Au7o's analysis of 5,380+ owner reports, the 2007-2025 Acura RDX has 17 documented issues. The most frequently reported are: Front Seat Belt Buckle Fails to Latch from Misformed Buckle Channel (Recall 23V158), VSA Modulator Ball Valve Leaks Brake Fluid Causing Long Pedal and Brake Hold Rollaway (Recall 23V430), Takata Driver's Frontal Airbag Inflator Rupture (Safety Recall). Of these, 5 are rated critical and should be addressed promptly.

Is the Acura RDX reliable?

The 2007-2025 Acura RDX has 17 known issues documented across 5,380+ owner reports. 5 issues are rated critical: Front Seat Belt Buckle Fails to Latch from Misformed Buckle Channel (Recall 23V158) and VSA Modulator Ball Valve Leaks Brake Fluid Causing Long Pedal and Brake Hold Rollaway (Recall 23V430) and Takata Driver's Frontal Airbag Inflator Rupture (Safety Recall) and J35 VCM Cylinder Deactivation Causing Oil Consumption and Rear-Bank Spark Plug Fouling and Denso Low-Pressure Fuel Pump Impeller Swells and Seizes Causing Stall (Recall 23V858). 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 RDX problems?

Repair costs for known Acura RDX issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Front Seat Belt Buckle Fails to Latch from Misformed Buckle Channel (Recall 23V158), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What year Acura RDX is the most reliable?

Reliability varies across model years of the Acura RDX. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2007-2025 Acura RDX with 17 documented issues documented across 5,380+ owner reports.

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 5,380+ owner reports, NHTSA recalls, TSBs, and automotive forums.

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Certain 2019-2020 RDX vehicles were built with improperly manufactured front seat belt buckle channels. The channel can interfere with the release button, so the buckle does not fully latch — or appears latched but does not securely retain the tongue. An occupant who believes they are belted may not be restrained in a crash. NHTSA campaign 23V158 (owner letters October 2023) is an expansion of the earlier 20V314 campaign, meaning some vehicles previously outside the range were pulled in later; owners who checked their VIN in 2020 and came up clear should check again.

Common Symptoms

  • Seat belt buckle will not latch or takes repeated attempts
  • Buckle releases unexpectedly
  • Tongue seats but does not click
  • Seat belt reminder behaving inconsistently

How to Fix

Free recall repair under NHTSA 23V158. The dealer replaces the driver and front passenger seat belt buckle release buttons and inspects both buckle assemblies, replacing the complete buckle where required, at no charge. Because this campaign expanded an earlier one, a VIN recheck at nhtsa.gov/recalls is worthwhile even on a car that was previously cleared. Until repaired, verify by feel and sound that the belt has latched before driving.

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Typical repair cost:$0 - $0

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

The RDX is included in the Takata airbag inflator recalls covering Honda and Acura vehicles. In affected first- and second-generation RDXs the driver's frontal airbag inflator can degrade with age, humidity and temperature cycling and produce excessive internal pressure on deployment, rupturing the inflator housing and firing metal fragments into the cabin. A subsequent campaign (NHTSA 19V182, Acura code U40) covered vehicles that had already received a replacement inflator under an earlier remedy — those replacement inflators were themselves found to be capable of over-pressurizing due to a manufacturing anomaly. This is the highest-severity documented defect on the nameplate: Takata inflator ruptures have caused fatalities across the affected fleet.

Common Symptoms

  • No warning symptoms — defect is latent until deployment
  • SRS light may or may not be present

How to Fix

Free recall repair. Check the VIN at nhtsa.gov/recalls or Acura's owner recall lookup — a VIN check is required because coverage is by production range, and some cars were remedied once and then recalled again under the replacement-inflator campaign. Dealers replace the driver's airbag inflator or the complete airbag module at no charge with no mileage or ownership limit. Do not defer this repair.

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Typical repair cost:$0 - $0

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

The second-generation RDX switched to the naturally aspirated J35 3.5L V6 with Variable Cylinder Management, and inherits the VCM failure pattern documented across Honda's V6 fleet. When VCM deactivates the rear bank, those cylinders run cool and unfired; oil is drawn past the rings and valve guides, glazes the bores and coats the plugs. Owners report the rear three spark plugs oil-fouled and carbon-loaded at service intervals, misfires on the rear bank, elevated oil consumption between changes (commonly a quart or more per 3,000-5,000 miles), and eventually ring-land carbon buildup that makes the consumption self-reinforcing. Honda's earlier VCM oil-consumption class action and warranty extension covered the 2008-2013 J35 fleet; RDX owners report the same mechanism on this platform. This is a VCM/J35 issue only — it does not apply to the 2007-2012 K23A1 turbo four or the 2019+ 2.0T.

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

Common Symptoms

  • Oil level dropping a quart or more between changes
  • Rear bank spark plugs oil-fouled at inspection
  • Misfire codes on cylinders 1/3/5 (rear bank)
  • Rough idle or stumble after cruising
  • Blue smoke on startup or hard acceleration
  • Low oil pressure light in late stages

How to Fix

Check oil level between changes and expect to top up. Replace all six plugs with the correct OEM-spec iridium plugs at shortened intervals (many owners go to roughly 60,000 miles rather than waiting out the full interval) and inspect the rear three for oil fouling as the diagnostic tell. Where documented consumption exists, the dealer procedure is a measured oil-consumption test followed by piston-ring replacement under any applicable warranty extension. Many owners fit a VCM-disabling controller (an S-VCM/VCM-tuner type device that holds coolant temperature so the engine stays out of 3-cylinder mode) to stop the mechanism progressing — an owner remedy, not a factory-endorsed one, and it can affect emissions compliance. No RDX-specific recall exists.

Typical repair cost:$180 - $4,500

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026
Community reported
1,450 owners

The 2.0L K20C4 turbo in the 3rd-gen RDX is documented to suffer oil DILUTION rather than consumption — unburned fuel from direct injection washes past the rings during cold-start cycles (especially short trips in cold climates) and accumulates in the crankcase. Owners typically see the oil level RISE above the full mark, with a strong gasoline smell on the dipstick. Long-term, the diluted oil loses film strength and accelerates bearing/cam wear. Acura issued software calibration updates under TSB 22-039 to reduce cold-start enrichment time.

Common Symptoms

  • Oil level drops between changes
  • Low oil warning light at 5,000-mile intervals
  • No visible external oil leaks
  • Faint blue haze from exhaust on hard acceleration
  • Oil change required before maintenance minder reaches 15%

How to Fix

Monitor oil level monthly with the dipstick and top off as needed between changes. Use only 0W-20 full synthetic oil meeting Honda HTO-06 specification. If consumption exceeds 1 quart per 2,000 miles, request an oil consumption test at the dealer. Acura may replace piston rings under warranty if consumption is documented as excessive.

Owner tips & cautions

  • TipKeep a quart of 0W-20 in the cargo area. Check the dipstick every 1,000 miles and document each top-off with date and mileage. This paper trail is essential if you need to file a warranty claim for excessive consumption.
Typical repair cost:$50 - $3,000

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Based on 1,450 owner reports

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Community Reported
High Confidence1,450 owner reportsLast reported by owners Feb 2026Reviewed Mar 2026

The first-generation RDX's K23A1 2.3L turbocharged four is unique in the Honda/Acura lineup, and its most commonly reported hard failure is not the turbo cartridge itself but the variable-flow wastegate actuator that controls it. The rubber diaphragm inside the flow actuator tears with age and heat cycling (owners commonly report this in the 90,000-130,000 mile range), so the actuator can no longer hold or modulate the wastegate arm. The result is underboost or overboost codes, a check engine light, and reduced power. Owners on AcuraZine repeatedly report dealers quoting a complete turbocharger assembly replacement (quotes as high as several thousand dollars) for what is usually an actuator, solenoid, vacuum-line or linkage fault. The vacuum lines, boost control solenoid, wiring and wastegate linkage are all more likely to fail on this engine than the turbo bearings.

Common Symptoms

  • Check engine light with boost-related codes
  • Noticeable loss of power / feels non-turbo
  • Limp mode under acceleration
  • Hissing or vacuum leak sound from engine bay
  • Boost gauge or scan-tool boost lower than spec

How to Fix

Diagnose before condemning the turbo: smoke- or vacuum-test the flow actuator diaphragm, inspect all boost-control vacuum lines for cracking and the wastegate arm for seized/worn linkage, and test the boost control solenoid. In most documented cases replacing the flow actuator (and solenoid/vacuum lines as needed) restores normal boost at a fraction of the turbo-assembly quote. There is no recall or warranty extension for this failure. Full turbo replacement is only warranted if there is shaft play, exhaust-side damage, or oil-seal failure.

Typical repair cost:$400 - $2,200

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

Honda recalled certain 2023 Acura RDX vehicles (alongside 2023 Civic, 2023 Integra and 2022 Accord) because a ball valve inside the Vehicle Stability Assist (VSA) modulator can leak brake fluid internally. Two consequences are documented in the campaign: the vehicle can move unintentionally while the electronic brake hold feature is engaged — the car creeps or rolls when the driver believes it is being held — and the driver can experience an unexpected increase in brake pedal travel, a long or sinking pedal that lengthens stopping distance. Owner notification went out in July 2023.

Common Symptoms

  • Vehicle creeps or rolls while brake hold is engaged
  • Brake pedal travels farther than normal or sinks
  • Brake warning light
  • Brake fluid level dropping without visible external leak

How to Fix

Free recall repair under NHTSA campaign 23V430 — the dealer replaces the VSA modulator assembly at no charge. Honda's internal recall codes for this campaign include OEJ, XEK, AEY, XEX and OEW. Verify the VIN at nhtsa.gov/recalls, since coverage is by production range and not all 2023 RDXs are included. Until repaired, do not rely on the brake hold feature to keep the vehicle stationary on a grade, and report any change in pedal feel immediately.

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Typical repair cost:$0 - $0

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

Third-generation RDX owners report a loud high-pitched squeal when the brakes are lightly applied at 15 mph or below — pulling into a parking space, creeping in traffic. The noise is strongly temperature-dependent: it appears in ambient temperatures under roughly 50°F and the front brakes typically go quiet once warmed up, which is why dealers who test-drive a hot car often cannot reproduce it. Acura acknowledged it in service bulletin 19-053 (Front and/or Rear Brakes Squeal When Applied at Low Speeds) covering 2019-2020 cars, and revised the bulletin repeatedly as the condition persisted into later model years, with a later revision extending it to 2022 and the bulletin still listed for 2023.

Common Symptoms

  • High-pitched squeal when braking lightly under 15 mph
  • Noise only in cold weather (under about 50°F)
  • Front squeal disappears once the brakes warm up
  • No pedal pulsation or loss of braking performance

How to Fix

Under TSB 19-053 the dealer replaces the front and/or rear brake pads and discs with the revised parts — this is a materials/manufacturing issue, so the repair should be performed under the new-vehicle warranty at no cost, not sold as a maintenance brake job. Bring the car in cold and, if possible, with a recording of the noise, since the squeal often will not reproduce on a warm test drive. Check for the latest revision of the bulletin, as coverage was extended beyond the original model years. This is a noise-only condition — braking performance is not impaired.

Typical repair cost:$0 - $900

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High ConfidenceVerifiedReviewed Aug 2026

Third-generation RDXs are included in Honda's expansion of the industry-wide Denso fuel pump recall. The in-tank low-pressure fuel pump module was built with impellers manufactured at an improper density; the impeller absorbs fuel, swells, and deforms until it contacts the pump housing and the pump seizes. Once the pump stops delivering fuel the engine will not start, or — the safety risk NHTSA cites — will stall while being driven, causing an unexpected loss of motive power in traffic. Acura notified NHTSA of this campaign in December 2023 covering certain 2019-2020 RDX vehicles.

Common Symptoms

  • Engine stalls while driving
  • Long crank or no-start
  • Loss of power / vehicle will not restart after stalling
  • Check engine light with fuel-pressure related codes

How to Fix

Free recall repair under NHTSA campaign 23V858 — dealers replace the complete fuel pump module at no charge. Coverage is by VIN and production range, so check the VIN at nhtsa.gov/recalls or with an Acura dealer rather than assuming by model year. Owners who already paid for a fuel pump replacement out of pocket should ask about reimbursement. If the vehicle is showing hard-start or stalling symptoms, do not defer.

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Typical repair cost:$0 - $0

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026
Community reported
1,350 owners

The 10-speed automatic in the third-gen RDX exhibits harsh shifts during 1-2 and 2-3 upshifts, particularly when the transmission is cold. Owners also report a noticeable hesitation when accelerating from a complete stop, with a 1-2 second delay before the transmission engages that feels like the vehicle is going to stall.

This issue also affects: Acura MDX, Acura TLX

Common Symptoms

  • Harsh 1-2 upshift when cold
  • Hesitation accelerating from stop
  • Jerky low-speed maneuvers in parking lots
  • Transmission clunk when shifting to Reverse
  • Rough downshift during deceleration

How to Fix

Update the TCM calibration to the latest Acura software revision, which improves cold-shift quality and reduces the hesitation from stop. Perform a transmission fluid change with Honda Type 3.0 fluid. Allow the adaptive learning to recalibrate for 500 miles after the update.

Owner tips & cautions

  • TipLet the RDX warm up for 30-60 seconds before driving in winter. The 10-speed is noticeably smoother once the ATF reaches operating temperature. The 2023+ calibration also significantly improved the stop-start hesitation.

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Based on 1,350 owner reports

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Community Reported
High Confidence1,350 owner reportsLast reported by owners Feb 2026Reviewed Mar 2026

The 2007-2012 RDX's 5-speed automatic uses clutch pressure switches to confirm hydraulic apply of the 2nd and 3rd clutch packs. These switches are a recurring failure point on the first-generation car — the 3rd clutch switch most often. When one fails or its circuit shorts, the TCM sets P0847/P0848 and flags P0700 at the PCM, illuminating the check engine light and frequently the D light. The car may drop into a fail-safe gear pattern with harsh or limited shifting. This is an electrical/sensor failure, not internal clutch damage, and is regularly misquoted by shops as a transmission rebuild.

This issue also affects: Acura CL, Acura ILX, Acura MDX

Common Symptoms

  • Check engine light with P0700
  • D indicator light blinking
  • Harsh or limited shifting / fail-safe gear
  • Loss of some forward gears
  • No other driveability symptoms when cold

How to Fix

Scan the TCM (not just generic P0700) to identify which clutch pressure switch circuit is faulted. Inspect the connector and harness for oil wicking and corrosion first — a contaminated connector reproduces the same code. Replace the failed 2nd or 3rd clutch pressure switch (a screw-in switch on the transmission case) and change the fluid with genuine Honda ATF DW-1; do not substitute generic ATF, which degrades shift quality on this unit. No recall or warranty extension covers this.

Typical repair cost:$150 - $500

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026

Second-generation RDX owners report a vibration or shudder felt through the floor and seat between roughly 20 and 60 mph under light throttle, when the 6-speed automatic's torque converter lock-up clutch is slipping into engagement. Acura investigated and issued a service bulletin (16-063 for the RDX, matching 16-062 for the MDX) concluding the torque converter itself is not defective and the transmission is not being damaged — the cause is transmission fluid that has degraded prematurely and lost its friction stability. The distinction matters because the symptom is routinely misdiagnosed as a failing torque converter and quoted as a transmission teardown. AcuraZine threads document owners going through repeat attempts before the correct software update is applied.

Common Symptoms

  • Vibration or shudder at 20-60 mph under light throttle
  • Feels like driving over rumble strips
  • Worse when the engine is warm and in higher gears
  • Symptom returns months after a fluid change alone

How to Fix

The factory remedy under TSB 16-063 is a complete transmission fluid exchange with genuine Honda ATF DW-1 (roughly 10 quarts, done as repeat drain-and-fills to displace the old fluid) plus a PGM-FI/A-T control software update that changes how the transmission manages fluid temperature and lock-up scheduling. The software update is the part that prevents recurrence — a fluid change alone frequently lets the judder return, which is what the repeat-attempt forum threads describe. Verify the update was actually flashed. Covered under powertrain warranty where applicable; there is no recall.

Typical repair cost:$200 - $600

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026
Community reported
1,600 owners

The True Touchpad Interface infotainment system in the third-gen RDX suffers from random reboots, input lag, and touchpad calibration drift. The system frequently loses its cursor position, making menu navigation frustrating and occasionally dangerous when the driver attempts adjustments while driving.

This issue also affects: Acura TLX, Acura ILX

Common Symptoms

  • Touchpad cursor drifts or jumps
  • Screen goes black and reboots
  • Audio cuts out for 30+ seconds
  • CarPlay disconnects randomly
  • System extremely slow after cold start

How to Fix

Update to the latest infotainment firmware which improves touchpad responsiveness and reduces reboot frequency. Recalibrate the touchpad through the system settings menu. If reboots persist, the infotainment control unit may require replacement under Acura warranty extension.

Owner tips & cautions

  • TipDisable the touchpad haptic feedback in settings — it reduces input lag noticeably. Also, the 2022+ firmware update is a significant improvement; insist on the latest version at the dealer.

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Based on 1,600 owner reports

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Community Reported
High Confidence1,600 owner reportsLast reported by owners Dec 2025Reviewed Mar 2026

Repeat dead batteries on the 2007-2012 and 2013-2018 RDX are frequently traced not to the battery or alternator but to an accessory module that never goes to sleep. AcuraZine threads dedicated to RDX battery drain identify the Hands-Free Link (HFL)/Bluetooth module as the single most common offender — owners report replacing battery and alternator with no change, then finding the draw disappears the moment the HFL unit is unplugged. The under-console audio amplifier and stuck door-lock actuators are the other recurring culprits, and the 2G forum documents the drain isolating to a specific interior fuse. Acura's service spec is 42 mA or less of parasitic draw after modules sleep; failed units commonly pull hundreds of milliamps and will flatten a healthy battery in one to three days of sitting.

Common Symptoms

  • Dead battery after sitting one to three days
  • Repeat battery replacements that do not fix it
  • Clicking or no-crank on a car driven regularly
  • Parasitic draw well above 42 mA on a meter
  • Bluetooth/phone system behaving oddly before the drain starts

How to Fix

Confirm the battery and charging system are good first, then perform a proper parasitic draw test: let all modules time out, then pull fuses one at a time until the draw drops below the 42 mA spec. Most documented fixes are replacing or disconnecting the HFL/Bluetooth module, replacing the audio amplifier, or replacing a stuck door-lock actuator. Also rule out owner-added dash cams wired to constant 12V, a common self-inflicted cause. No recall covers this; a battery maintainer is only a band-aid.

Typical repair cost:$150 - $900

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026
Community reported
980 owners

The second-generation RDX with the 3.5L V6 experiences premature AC compressor clutch and bearing failures, often between 60,000-90,000 miles. The compressor clutch bearing seizes, causing a loud screeching noise followed by complete loss of air conditioning and potential serpentine belt damage.

This issue also affects: Acura RSX, Acura TSX

Common Symptoms

  • Loud screeching from engine bay when AC is on
  • AC blows warm air intermittently
  • Clicking noise from AC compressor area
  • AC works when cold but fails in heat
  • Burning rubber smell from belt slip

How to Fix

Replace the AC compressor assembly with a new unit — clutch-only repairs on this model tend to fail again within a year. Replace the receiver/drier and expansion valve at the same time. Evacuate and recharge the system with the correct amount of R-134a refrigerant. Inspect the serpentine belt for damage from the seized clutch.

Owner tips & cautions

  • TipReplace the entire compressor, not just the clutch. Clutch-only jobs on the RDX V6 fail again within 12-18 months because the internal bearing race is already scored. Budget $1,200-1,500 for a quality Denso replacement at an independent shop.
Typical repair cost:$800 - $1,800

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Based on 980 owner reports

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Community Reported
High Confidence980 owner reportsLast reported by owners Aug 2025Reviewed Mar 2026

The first-generation RDX was Acura's SH-AWD application in this body, and its rear differential carries clutch packs that depend on the friction properties of Acura Dual Pump Fluid (DPSF). The fluid is easy to overlook — many owners coming from front-drive cars never touch it — and once it breaks down the clutch packs chatter. Owners report a groaning, shuddering or binding sensation in tight low-speed turns (parking lots, U-turns) and a whine from the rear that changes pitch with road speed. Left unaddressed the clutch packs wear and the SH-AWD system loses rear torque distribution, eventually setting AWD warnings.

Common Symptoms

  • Groaning or shudder in tight slow turns
  • Whine from the rear that rises with speed
  • Binding feel during parking maneuvers
  • AWD system warning light in later stages

How to Fix

Drain and refill the rear differential with genuine Acura DPSF (Dual Pump Fluid) — never a generic gear oil or LSD additive, which will not restore the correct friction characteristic. Acura calls for the fluid roughly every 30,000 miles or 3 years; on a car with unknown history, two back-to-back drain-and-fills often clears the chatter. If groaning persists after a correct fluid service, the clutch packs or the differential's solenoid valves are worn and the unit needs internal repair or replacement. No recall applies.

Typical repair cost:$90 - $2,500

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Community Reported
Low ConfidenceVerifiedReviewed Aug 2026

Second-generation RDX owners get a TIGHTEN FUEL CAP message and a check engine light for an EVAP leak, and the cap is tight. Acura issued service bulletin 14-006 covering the RDX and other Honda/Acura models: the original fuel cap's black gasket fails to seal reliably, so the EVAP system's leak monitor reports a leak that no amount of retightening will clear. Because the cap looks and feels fine, this is commonly chased with expensive smoke testing and purge-valve replacement before the cap is suspected. The EVAP fault will also block emissions-test readiness monitors.

Common Symptoms

  • TIGHTEN FUEL CAP message on the dash
  • Check engine light with EVAP leak code
  • Code returns after retightening or replacing with a generic cap
  • Emissions readiness monitors will not set

How to Fix

Replace the fuel cap with the updated OEM cap — the revised part carries a brown gasket rather than the original black one — per TSB 14-006, then clear the code and allow the EVAP monitor to run to completion. This is a low-cost fix and should be the first step before smoke testing. If the code returns with the revised cap installed, smoke-test the system for a cracked EVAP canister or a failed purge/vent valve, both documented on this platform. There is no recall.

Typical repair cost:$40 - $150

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Medium ConfidenceVerifiedReviewed Aug 2026

The third-generation RDX's panoramic glass roof is a documented noise and durability complaint. Acura issued service bulletin 21-003 (January 2021) for the 2019 RDX addressing rattling or clicking from the panoramic glass roof — a noise from the roof assembly over bumps and rough pavement. Separately, owners report the powered sunshade motor failing with the shade stuck in the open position, and dealers quoting removal of the entire panoramic roof assembly to reach it, with quotes reported around $4,000 out of warranty. Owner-survey data for 2019-2021 also records squeaks, rattles, weatherstrip and water-leak complaints concentrated on this roof.

Common Symptoms

  • Rattling or clicking from the roof over bumps
  • Wind noise from the roof at speed
  • Powered sunshade stuck open or will not move
  • Water in the headliner, A-pillar trim or footwell after rain

How to Fix

For the rattle, have the dealer apply TSB 21-003 — the bulletin covers the roof assembly noise repair and should be done under the new-vehicle warranty. For a stuck sunshade, the motor/drive assembly is the failed part; press for warranty coverage while the car is in term, because out of warranty the labor to access it dominates the repair cost. For water intrusion, first clear the roof drain tubes, which clog with debris and back water into the headliner or footwells — that is maintenance, not a defect, and is far cheaper than seal replacement. No recall covers any of this.

Typical repair cost:$0 - $4,000

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Medium ConfidenceVerifiedReviewed Aug 2026
Campaign #26V33200021/05/2026

STEERING

Honda (American Honda Motor Co.) is recalling certain 2023-2024 Odyssey and 2024 Acura RDX vehicles. The steering gear box assembly may not have been tightened properly, allowing water to enter the assembly and cause corrosion and binding gears.

Campaign #24V11400015/02/2024

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

+ 1 more recalls. Check all on NHTSA.gov

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

get a full repair guide

What is the 2019-2020 Acura RDX Front Seat Belt Buckle Fails to Latch from Misformed Buckle Channel (Recall 23V158)?

Certain 2019-2020 RDX vehicles were built with improperly manufactured front seat belt buckle channels. The channel can interfere with the release button, so the buckle does not fully latch — or appears latched but does not securely retain the tongue. An occupant who believes the… Repairs typically run $0-$0. Severity: high.

What is the 2023 Acura RDX VSA Modulator Ball Valve Leaks Brake Fluid Causing Long Pedal and Brake Hold Rollaway (Recall 23V430)?

Honda recalled certain 2023 Acura RDX vehicles (alongside 2023 Civic, 2023 Integra and 2022 Accord) because a ball valve inside the Vehicle Stability Assist (VSA) modulator can leak brake fluid internally. Two consequences are documented in the campaign: the vehicle can move unin… Repairs typically run $0-$0. Severity: high.

What is the 2007-2016 Acura RDX Takata Driver's Frontal Airbag Inflator Rupture (Safety Recall)?

The RDX is included in the Takata airbag inflator recalls covering Honda and Acura vehicles. In affected first- and second-generation RDXs the driver's frontal airbag inflator can degrade with age, humidity and temperature cycling and produce excessive internal pressure on deploy… Repairs typically run $0-$0. Severity: high.

What is the 2013-2018 Acura RDX J35 VCM Cylinder Deactivation Causing Oil Consumption and Rear-Bank Spark Plug Fouling?

The second-generation RDX switched to the naturally aspirated J35 3.5L V6 with Variable Cylinder Management, and inherits the VCM failure pattern documented across Honda's V6 fleet. When VCM deactivates the rear bank, those cylinders run cool and unfired; oil is drawn past the ri… Repairs typically run $180-$4,500. Severity: high.

What is the 2019-2020 Acura RDX Denso Low-Pressure Fuel Pump Impeller Swells and Seizes Causing Stall (Recall 23V858)?

Third-generation RDXs are included in Honda's expansion of the industry-wide Denso fuel pump recall. The in-tank low-pressure fuel pump module was built with impellers manufactured at an improper density; the impeller absorbs fuel, swells, and deforms until it contacts the pump h… Repairs typically run $0-$0. Severity: high.

What is the 2019-2023 Acura RDX True Touchpad Interface Infotainment Reboots and Lag?

The True Touchpad Interface infotainment system in the third-gen RDX suffers from random reboots, input lag, and touchpad calibration drift. The system frequently loses its cursor position, making menu navigation frustrating and occasionally dangerous when the driver attempts adj… Severity: medium.

What is the 2019-2025 Acura RDX 2.0T Engine Oil Dilution from Direct Injection Fuel Wash?

The 2.0L K20C4 turbo in the 3rd-gen RDX is documented to suffer oil DILUTION rather than consumption — unburned fuel from direct injection washes past the rings during cold-start cycles (especially short trips in cold climates) and accumulates in the crankcase. Owners typically s… Repairs typically run $50-$3,000. Severity: medium.

What is the 2019-2025 Acura RDX Transmission Harsh Shifting and Hesitation from Stop?

The 10-speed automatic in the third-gen RDX exhibits harsh shifts during 1-2 and 2-3 upshifts, particularly when the transmission is cold. Owners also report a noticeable hesitation when accelerating from a complete stop, with a 1-2 second delay before the transmission engages th… Severity: medium.

What is the 2013-2018 Acura RDX AC Compressor Clutch and Bearing Failure?

The second-generation RDX with the 3.5L V6 experiences premature AC compressor clutch and bearing failures, often between 60,000-90,000 miles. The compressor clutch bearing seizes, causing a loud screeching noise followed by complete loss of air conditioning and potential serpent… Repairs typically run $800-$1,800. Severity: medium.

What is the 2007-2012 Acura RDX 5-Speed Automatic 2nd/3rd Clutch Transmission Fluid Pressure Switch Failure (P0847/P0848/P0700)?

The 2007-2012 RDX's 5-speed automatic uses clutch pressure switches to confirm hydraulic apply of the 2nd and 3rd clutch packs. These switches are a recurring failure point on the first-generation car — the 3rd clutch switch most often. When one fails or its circuit shorts, the T… Repairs typically run $150-$500. Severity: medium.

What is the 2007-2012 Acura RDX SH-AWD Rear Differential Clutch Chatter and Whine from Degraded DPSF Fluid?

The first-generation RDX was Acura's SH-AWD application in this body, and its rear differential carries clutch packs that depend on the friction properties of Acura Dual Pump Fluid (DPSF). The fluid is easy to overlook — many owners coming from front-drive cars never touch it — a… Repairs typically run $90-$2,500. Severity: medium.

What is the 2007-2018 Acura RDX Parasitic Battery Drain from Hands-Free Link (HFL) and Audio Amplifier Modules?

Repeat dead batteries on the 2007-2012 and 2013-2018 RDX are frequently traced not to the battery or alternator but to an accessory module that never goes to sleep. AcuraZine threads dedicated to RDX battery drain identify the Hands-Free Link (HFL)/Bluetooth module as the single… Repairs typically run $150-$900. Severity: medium.

What is the 2013-2016 Acura RDX Torque Converter Lock-Up Clutch Judder from Prematurely Deteriorated ATF (TSB 16-063)?

Second-generation RDX owners report a vibration or shudder felt through the floor and seat between roughly 20 and 60 mph under light throttle, when the 6-speed automatic's torque converter lock-up clutch is slipping into engagement. Acura investigated and issued a service bulleti… Repairs typically run $200-$600. Severity: medium.

What is the 2007-2012 Acura RDX K23A1 Turbocharger Wastegate Flow Actuator Diaphragm Tears Causing Boost Loss and Limp Mode?

The first-generation RDX's K23A1 2.3L turbocharged four is unique in the Honda/Acura lineup, and its most commonly reported hard failure is not the turbo cartridge itself but the variable-flow wastegate actuator that controls it. The rubber diaphragm inside the flow actuator tear… Repairs typically run $400-$2,200. Severity: medium.

What is the 2012-2015 Acura RDX Fuel Cap Gasket Fails to Seal Setting EVAP Large-Leak Codes P0455/P0456 (TSB 14-006)?

Second-generation RDX owners get a TIGHTEN FUEL CAP message and a check engine light for an EVAP leak, and the cap is tight. Acura issued service bulletin 14-006 covering the RDX and other Honda/Acura models: the original fuel cap's black gasket fails to seal reliably, so the EVA… Repairs typically run $40-$150. Severity: low.

What is the 2019-2023 Acura RDX Front and Rear Brake High-Pitched Squeal at Low Speed from Pad/Disc Material (TSB 19-053)?

Third-generation RDX owners report a loud high-pitched squeal when the brakes are lightly applied at 15 mph or below — pulling into a parking space, creeping in traffic. The noise is strongly temperature-dependent: it appears in ambient temperatures under roughly 50°F and the fro… Repairs typically run $0-$900. Severity: low.

What is the 2019-2021 Acura RDX Panoramic Glass Roof Rattling and Clicking Plus Sunshade Motor Failure (TSB 21-003)?

The third-generation RDX's panoramic glass roof is a documented noise and durability complaint. Acura issued service bulletin 21-003 (January 2021) for the 2019 RDX addressing rattling or clicking from the panoramic glass roof — a noise from the roof assembly over bumps and rough… Repairs typically run $0-$4,000. Severity: low.