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2009 Acura MDX Recalls, Problems & Maintenance

The 2009 Acura MDX has no open NHTSA recalls. Owners report 8 recurring issue clusters, led by “Premature failure of internal engine components.” Acura's Maintenance Minder calculates oil life from real engine conditions and shows service codes instead of fixed mileages — code A or B (oil / oil + inspection) plus sub-codes for items like tire rotation (1), air filters (2), or transmission fluid (3). Follow the codes, not the calendar. One interval you should never stretch: most Acura 3.5L V6 engines (MDX, TL) use a timing belt with a roughly 105,000-mile / 7-year replacement — a snapped belt on this interference engine means bent valves. SH-AWD models add a rear-differential fluid service that's essential for the torque-vectoring unit.

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No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.

Known issues & problems for this vehicle

What drivers and federal regulators have officially reported about the 2009 Acura MDX.

Reported to NHTSA

Premature failure of internal engine components

ENGINE AND ENGINE COOLING

4 NHTSA complaints · 2009-11 → 2017-05

“2009 ACURA MDX WITH LESS THAN 4000 MILES DEVELOPED AN ISSUE WITH TIMING BELT PULLEYS, TIMING BELT AND FRONT PART OF ENGINE”
— Owner report, NHTSA ODI #10293557
“MY 2009 MDX WITH 3500+ MILES HAS BEEN TAKEN TO DEALER 3 TIMES IN THE LAST MONTH. ONCE I HAD TO GET IT TOWED TO DEALERSHIP. FIRST TIME I WAS TOLD THAT THEY WAS ISSUE WITH POOR QUALITY TIMING BELT PULLEY. SO TIMING BELT GOT SHREDDED”
— Owner report, NHTSA ODI #10295242
“ENGINE OIL PUMP (PREMATURE FAILURE) - I OWN A 2001 TL AND 2009MDX. ON THE MDX, I HAVE FOUND PREMATURE FAILURE OF OIL PUMP. THE VEHICLE HAS BEEN DRIVEN LESS THAN 8000 MILES PER YEAR AND FAILED AT 85000 MILES. A LEAK OVER TIME COULD RESULT IN ENGINE CEASING”
— Owner report, NHTSA ODI #10985470

Read all complaints on NHTSA →

Headlight lens fogging and reduced beam output

EXTERIOR LIGHTING

2 NHTSA complaints · 2020-07 → 2021-02

“MY HEADLIGHTS IN MY 2009 MDX ARE GETTING VERY FOGGY LIKE THEY TURNNIG WHITE IN OUTSIDE SURFACE IS HARD TO SEE AT NIGHT TIME WHIT THE LOW BEANS I USE THE HIGH BEANS TO BE ABLE TO SEE I TAKE IT TO A REPAIR SHOP AND THEY CANNOT DO NOTHING I THINK THIS IS A SAFETY HAZARD”
— Owner report, NHTSA ODI #11339179
“LOW BEAM HEADLIGHT IS EXTREMELY DIM, CAN BARELY SEE AT NIGHT. CHANGING THE LIGHT BULB DOES NOT SOLVE. HEADLIGHT COVER IS NOT FOGGY OR CLOUDY, IT IS CLEAR. SUSPECTING INTERNAL REFLECTOR ISSUE AS ACURA HAS DONE RECALLS ON OTHER MODELS FOR THE SAME ISSUE BUT NOT ON RDX”
— Owner report, NHTSA ODI #11395433

Read all complaints on NHTSA →

HFL/Bluetooth module draining battery

ELECTRICAL SYSTEM

9 NHTSA complaints · 2012-01 → 2021-08

“BLUETOOTH HANDFREE LINK (HFL) IN MY 2009 ACURA MDX WAS DRAINING MY BATTERY. I HAD TO CALL TOWING SERVICE A FEW TIMES TO START THE VEHICLE. WHEN I OPENED THE COMPARTMENT WHERE HANDS FREE LINK DEVICE IS LOCATED, I NOTICED THAT THE DEVICE WAS EXTREMELY HOT (FIRE HAZARD)”
— Owner report, NHTSA ODI #11066751
“MY MDX HAS ONLY 62,400 MILES AND TODAY I GOT A MESSAGE "CHECK STARTER SYSTEM" DUE TO THE HFL MODULE IS DRAINING THE BATTERY. LUCKILY THE CAR WAS IN MY GARAGE AT THE TIME”
— Owner report, NHTSA ODI #10905961
“THE BLUETOOTH MODULE DRAINS THE BATTERY WHEN THE VEHICLE IS TURNED OFF AND I AM AFRAID THAT MY VEHICLE COULD BE TURNED OFF BY DRAINING THE BATTERY WHEN RUNNING CAUSING A SAFETY ISSUE”
— Owner report, NHTSA ODI #11246429

Read all complaints on NHTSA →

Stalling and sudden loss of power while driving

VEHICLE SPEED CONTROL

6 NHTSA complaints · 2010-02 → 2022-07

“WHILE DRIVING ON THE BROOKLYN-QUEENS EXPRESSWAY (I 278 E)AT A HIGH RATE OF SPEED THE CAR STALLED NEARLY CAUSING AN ACCIDENT, TRUCK AND TRACTOR TRAILERS CAME BARRELING DOWN TOWARDS MY STALLED VEHICLE AND ABRUPTLY CHANGING LANES TO AVOID CRASHING INTO MY CAR”
— Owner report, NHTSA ODI #10313708
“While driving vehicle, all power shut off after all lights(airbag, tire, engine, etc. came on the dashboard) not able to start vehicle now at all. Has power but will not run, turn over, stay running, etc. has brand new battery so that’s not the problem no problems until today”
— Owner report, NHTSA ODI #11472580
“The contact owns a 2009 Acura MDX. The contact stated while driving at an undisclosed speed and approaching a stop sign, the accelerator pedal was depressed however, the vehicle failed to respond”
— Owner report, NHTSA ODI #11423124

Read all complaints on NHTSA →

Sudden unintended acceleration resulting in crash

VEHICLE SPEED CONTROL

3 NHTSA complaints · 2014-05 → 2019-07

“ON JUNE 30TH 2019 AFTER LEAVING FROM WORK I WAS ON MY WAY TO PIER 1 WHICH IS APPROXIMATELY 2 MILES AWAY. I TURNED INTO THE PARKING LOT PARKED IN FRONT OF PIER 1 AND ALL OF A SUDDEN MY CAR ACCELERATED OUT OF CONTROL”
— Owner report, NHTSA ODI #11230173
“TL* THE CONTACT OWNED A 2009 ACURA MDX. WHILE THE CONTACT'S SPOUSE WAS DRIVING 5 MPH PULLING INTO A PARKING SPACE, THE VEHICLE INADVERTENTLY ACCELERATED AND CRASHED INTO A STORE. THE CONTACT WAS UNSURE IF ANY WARNING INDICATORS WERE ILLUMINATED”
— Owner report, NHTSA ODI #10986350
“TL* THE CONTACT OWNS A 2009 ACURA MDX. THE CONTACT STATED THAT WHILE REVERSING, THE BRAKE PEDAL WAS DEPRESSED AS THE VEHICLE SUDDENLY ACCELERATED CAUSING THE CONTACT TO CRASH INTO A POLE”
— Owner report, NHTSA ODI #10595074

Read all complaints on NHTSA →

Head restraint forcing head and neck forward

SEATS

2 NHTSA complaints · 2010-08 → 2012-04

“THERE MUST BE A DEFECT IN MY 2009 ACURA MDX HEAD RESTRAINT SYSTEM. I BELIEVE IT HAS RESULTED IN OR CONTRIBUTED TO A NECK INJURY . I HAVE HAD NECK PAIN BAD ENOUGH TO REQUIRE FOUR MONTHS OF PHYSICAL THERAPY AND FIVE SURGICAL PROCEDURES”
— Owner report, NHTSA ODI #10346949
“TL* THE CONTACT OWNS A 2009 ACURA MDX. THE CONTACT STATED THAT THE HEADREST WOULD PUSH HER HEAD FORWARD, CAUSING HER NECK AND BACK PAIN. THE VEHICLE WAS TAKEN TO THE DEALER WHO ADVISED THAT THEY WERE UNABLE TO ALTER THE VEHICLE DESIGN”
— Owner report, NHTSA ODI #10454907

Read all complaints on NHTSA →

Airbag warning light from faulty airbag or cable reel

AIR BAGS

2 NHTSA complaints · 2014-09 → 2022-02

“Vehicle produced a dash warning light for airbag/supplemental restraint system on January 29th or 30th, 2022. Went away and back on again 3 times in the following week. No prior issues related to this. Vehicle has never been in an accident”
— Owner report, NHTSA ODI #11451149
“I HAVE A RECURRING PROBLEM WITH MY AIR BAG SYSTEM ON MY 2009 ACURA MDX (VEHICLE NO [XXX]) WHICH MY LOCAL DEALER HAS BEEN UNABLE TO RESOLVE. I FIRST NOTICED THE PROBLEM WHEN THE VEHICLE HAD APPROXIMATELY 21,000 MILES”
— Owner report, NHTSA ODI #10631032

Read all complaints on NHTSA →

Windshield wipers activate or run without driver input

VISIBILITY

2 NHTSA complaints · 2010-07 → 2015-04

“TL*THE CONTACT OWNS A 2009 ACURA MDX. WHILE DRIVING APPROXIMATELY 75 MPH THE WINDSHIELD WIPERS AND THE WINDSHIELD WIPER FLUID ENGAGED ON ITS OWN AND REMAINED ON”
— Owner report, NHTSA ODI #10344247
“THE WINDSHIELD WIPERS WOULD JUST COME ON AND NOT SHUT OFF. WE TRIED SEVERAL THINGS BUT THE WIPERS WOULD NOT STOP. I HAD TO TAKE THE FUSE OUT SO IT CAUSE FURTHER DAMAGE”
— Owner report, NHTSA ODI #10713004

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 20, 2026. Investigation data refreshed Sep 20, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Raw data + downloads for this vehicle →

Essential maintenance

Critical for safety and preventing major damage

Oil & Filter (Maintenance Minder A/B)

Every 8,000 mi

Change when the Maintenance Minder reaches 15% oil life or shows code A/B — typically every 7,500-10,000 miles with 0W-20 synthetic. Short-trip city driving triggers the code sooner; that's the algorithm doing its job.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Timing Belt (3.5L V6 — MDX, TL)

Every 105,000 mi

J-series V6: replace the timing belt around 105,000 miles or 7 years (Maintenance Minder sub-code 4). It's an interference engine — a failed belt destroys valves. Replace the water pump and tensioner in the same job. (2022+ MDX 3.5L remains belt-driven; the Integra's turbo four is chain-driven.)

Estimated cost — typical U.S. ranges

Dealer

~$935–$1175

Shop

~$655–$825

DIY

Pro only

On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.

Tire Rotation (Sub-code 1)

Every 7,500 mi

Rotate when sub-code 1 appears — roughly every 7,500 miles. SH-AWD models: keep tread depths matched across all four corners.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection

Every 10,000 mi

Inspect pads, rotors, and fluid level with every A/B service. Type S models with Brembo front calipers: pads wear faster and cost more — budget ahead.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Brake Fluid

Every 30,000 mi

Replace every 3 years regardless of mileage — Honda/Acura schedules this on time because the fluid absorbs moisture.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Transmission Fluid (Sub-code 3)

Every 30,000 mi

Replace ATF when sub-code 3 appears — commonly every 30,000-60,000 miles depending on duty. Use Honda/Acura ATF only (DW-1, or the 10-speed's specified fluid); aftermarket 'universal' ATF causes shudder in these gearboxes.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

SH-AWD Rear Differential Fluid

Every 30,000 mi

SH-AWD (MDX, TLX, RDX): replace the rear differential fluid roughly every 30,000 miles (sub-code 6) — the torque-vectoring clutch packs run in this fluid, and whining or binding in tight turns is the classic overdue symptom.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Spark Plugs (Sub-code 4)

Every 100,000 mi

Iridium plugs around 100,000 miles on most models. Turbocharged Integra/ADX engines: check the manual — forced induction typically shortens the interval.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

Engine Air Filter (Sub-code 2)

Every 30,000 mi

Replace with sub-code 2, roughly every 30,000 miles — sooner in dusty conditions.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Cabin Air Filter (Sub-code 2)

Every 30,000 mi

Replace with sub-code 2 alongside the engine air filter. Behind the glovebox — an easy DIY on most Acuras.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Coolant Replacement (Sub-code 5)

Every 100,000 mi

Honda/Acura Type 2 coolant: first change around 10 years / 100,000 miles, then every 5 years / 50,000. Use the blue Type 2 coolant only.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

14 crashes 1990–2024

How the 14 occupant deaths break down

10

driver deaths

4

passenger deaths

14

occupant deaths

Crash years covered: 1990–2024 This model year first appears in 2010 crashes. Older models have had more years on the road to appear in these crashes, so a higher count here does not by itself mean a vehicle is less safe.

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

FARS 2024 data is an annual report file. NHTSA revises these records when the final file is published, so this count can change.

Why we show driver deaths too

Every vehicle has exactly one driver seat, so driver deaths line up fairly when you compare one model to another. Occupant deaths include passengers, so a three row SUV can show a higher number than a two seat car simply because it carries more people.

Both figures are plain counts, not rates. A rate would need to know how many of each vehicle are on the road, and that registration data is not public, so we do not publish rates or scores of any kind.

IIHS publishes driver death rates using this same driver only idea, paired with a registered vehicle years denominator we do not have. Their rates and these counts answer different questions, so do not read either number here as a safety rating.

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

4

complaints mentioning a crash

1

complaints mentioning a fire

Reviewed known issues for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2009 Acura MDX reflects Acura's published service intervals and the Maintenance Minder system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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