Owner-reported complaints naming the powertrain system, filed with NHTSA
Data refreshed
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials. Every record below is an owner-reported complaint about the 2009 Acura MDX submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 8 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Shown in the owner’s own words, exactly as filed
I just got this car in September and it is now throwing all kinds of different codes to the point where I can’t drive it sh-awd /check charging station / emission light etc
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.
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. The contact shifted the vehicle to neutral and back to drive and the vehicle responded slowly. The failure recurred several times. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The failure mileage was 150,061.
ALL DOOR LOCKS, WINDOWS, TRUNK, FUEL DOOR, AND SUNROOF DOES NOT WORK
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. ON THE TL, IT TOOK 225000 MILES TO REPLACE THE OIL PUMP.
I TOOK MY 2009 MDX INTO ACURA DEALER FOR SHUDDER AT 35-45 MPH AT 68K. SERVICE TECH WROTE UP REPAIR ORDER AS PCM UPDATE. THEY DID NOT DOCUMENT THE SHUDDER COMPLAINT. EVEN THO I DROVE WITH SERVICE TECH AND THEN HE DROVE ALSO, VERIFYING SHUDDER. I HAD TO GO BACK 2ND TIME AS PCM DIDN'T TAKE ACCORDING TO DEALER AND THAT'S WHY SHUDDERING CONTINUED AFTER 1ST PCM UPDATE. NOW AT 107K, SHUDDER IS BACK. MDX OUT OF EXTENDED WARRANTY BY 2000 MILES AND ACURA/HONDA REFUSES GOODWILL REPAIR. THIS IS MY SECOND MDX. THE TORQUE CONVERTER NEEDED REPLACED IN MY 2003 MDX. ACURA ASSURED ME WHEN I PURCHASED THE 2009 THAT THIS KNOWN PROBLEM WAS RESOLVED. OBVIOUSLY THE TORQUE CONVERTER/TRANSMISSION CONTINUES TO BE FAULTY. I'M WONDERING IF THE PCM UPDATE IS DISGUISING THE PROBLEM PUSHING THE MDX PAST THE MILEAGE WARRANTY. *TR
I BROUGHT THE CAR INTO THE DEALER BECAUSE I WAS HAVING TRANSMISSION PROBLEMS OR POWER STEERING PROBLEMS. I INDICATED THAT THE CAR MAKES A WHINE AT ABOUT 1500 RPM. THE DEALER CHOSE TO TREAT IT AS A POWER STEERING PROBLEM. THE POWER STEERING PUMP WAS REPLACED. THERE WAS STILL A WHINE ALTHOUGH LESS. THE CAR RPM HANGS UP ON DECELERATION TO A STOP. SOME TIMES WHEN GOING DOWN HILL THE CAR DOES NOT UPSHIFT UNTIL THE CAR IS ACCELERATED EVEN THOUGH THE ROAD SLOPE IS ZERO. THE DEALER NEVER INFORMED ME WHEN I BROUGHT THE VEHICLE IN FOR THE ORIGINAL CONCERN THAT THERE WERE SOME PROBLEMS WITH THE TRANSMISSION OR TORQUE CONVERTER HANGING UP. *TR
ACURA MDX (2009) VIBRATION ISSUES: SINCE PURCHASING THE VEHICLE NEW, THERE IS A VIBRATION DRIVING AT SPEEDS EXCEEDING 70 MPH. THE VIBRATION CAN BE FELT THROUGH THE CHASIS AND STEERING WHEEL. THE DEALER HAS REPLACED THE TIRES, RIMS, DRIVE SHAFT AND PERFORMED MULTIPLE BALANCING AND ALIGNMENTS. THE MANUFACTURER REPRESENTATIVE COULD NOT RESOLVE THE ISSUE INITIALLY, BUT LATER SUGGESTED THE REPLACEMENT OF THE DRIVE SHAFT. THIS WORKED INITIALLY BUT THE PROBLEM HAS RESURFACED AGAIN. I FILED A LEMON LAW CLAIM THAT ACURA HAS NEGLECTED TO RESPOND TO FULLY. THEY TRIED TO FIX IT, BUT THE PROBLEM IS STILL PRESENT AND GETTING WORSE. WHEN DRIVING THE CAR, IT FEELS AT TIMES, AS IF THE WHEELS ARE GOING TO FALL OFF. IT IS OFTEN WORSE WHEN DRIVING UP HILL WHEN THE CAR IS COLD AND THE WEATHER COLD. IT APPEARS TO GET BETTER AS THE CAR WARMS UP, THOUGH. THIS ALSO APPEARS TO BE A WELL DOCUMENTED CONCERN THAT IS DOCUMENTED ON DISCUSSION BOARDS SUCH AS: EDMONDS- HTTP://TOWNHALL-TALK.EDMUNDS.COM/WEBX/.F13BAE6?DISPLAYRECENT WHERE THERE ARE CURRENTLY 59 POSTS ON THE TOPIC AND ALL SIMILAR TO MY EXPERIENCE. *TR
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
Data on this page last refreshed .