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.
2009 Acura Mdx
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2009 Acura Mdx do not stand out strongly from the model-year median of 101.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Mdx years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
37 reports with mileage · 15 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
52 reportsMY 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. I HAD TO CHARGE THE BATTERY SO I COULD START THE CAR. ALL THE INFO I HAVE READ ONLINE STATES THE THE HFL MODULE GETS REAL HOT AND CAN CAUSE FIRE. MY GARAGE IS …
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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. I HAD TO CHARGE THE BATTERY SO I COULD START THE CAR. ALL THE INFO I HAVE READ ONLINE STATES THE THE HFL MODULE GETS REAL HOT AND CAN CAUSE FIRE. MY GARAGE IS UNDER MY BEDROOM. THIS IS A PART MADE BY JOHNSON CONTROLS, ACURA NEEDS TO RECALL THIS ITEM.
BLUETOOTH STOPPED WORKING AND A FEW WEEKS LATER, MY CAR WOULDN'T START. I REPLACED THE BATTERY AND A FEW DAYS LATER THE CAR STALLED ON ME AS I WAS PULLING OUT OF MY SPOT!!!!! I WENT TO THE ACURA DEALER AND EXPLAINED TO THE GUY THAT MY BATTERY KEPT DRAINING. HE ASKED ME IF MY BLUETOOTH STOPPED WORKING, I WAS SHOCKED BECAUSE I …
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BLUETOOTH STOPPED WORKING AND A FEW WEEKS LATER, MY CAR WOULDN'T START. I REPLACED THE BATTERY AND A FEW DAYS LATER THE CAR STALLED ON ME AS I WAS PULLING OUT OF MY SPOT!!!!! I WENT TO THE ACURA DEALER AND EXPLAINED TO THE GUY THAT MY BATTERY KEPT DRAINING. HE ASKED ME IF MY BLUETOOTH STOPPED WORKING, I WAS SHOCKED BECAUSE I HADN'T MENTIONED ANY ISSUES WITH MY BLUETOOTH BUT I LET HIM KNOW THAT IN FACT, THE BLUETOOTH HAD STOPPED. THE REP SAID IT'S A COMMON PROBLEM IN MY VEHICLE. HAD TO REPLACE THE BLUETOOTH AND PAID $600!!!! MY FRIENDS SISTER HAS THE SAME MAKE CAR AND HER BLUETOOTH STOPPED WORKING AND HER CAR BATTERY KEEPS GOING DEAD. IT'S VERY SCARY SINCE APPARENTLY I MUST HAVE STARTED THE CAR RIGHT BEFORE THE BATTERY DIED AGAIN. IMAGINE WHAT WOULD'VE HAPPENED IF IT HAD STALLED ON A HIGHWAY OR A BUSY STREET!
NOT SURE IF THIS RELATED TO TAKATA AIRBAGS. MY WIFE WAS IN BAD ROLLOVER ACCIDENT INVOLVING A 2009 ACURA MDX ON NOV 5, 2015. AT 5:15 PM ON 11/5, THURSDAY, IT WAS DARK AND RAINING AS SHE WAS HEADING EAST ON US ROUTE 12 CLOSE TO THE ARCELORMITTAL USA OFFICE AND SLIPPED, VEERED OFF THE ROAD AND SUV ROLLED OVER AND CART WHEELED AND F…
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NOT SURE IF THIS RELATED TO TAKATA AIRBAGS. MY WIFE WAS IN BAD ROLLOVER ACCIDENT INVOLVING A 2009 ACURA MDX ON NOV 5, 2015. AT 5:15 PM ON 11/5, THURSDAY, IT WAS DARK AND RAINING AS SHE WAS HEADING EAST ON US ROUTE 12 CLOSE TO THE ARCELORMITTAL USA OFFICE AND SLIPPED, VEERED OFF THE ROAD AND SUV ROLLED OVER AND CART WHEELED AND FELL IN A DITCH. THE SUV WAS UPSIDE DOWN WHEN I ARRIVED AFTER A FIRST RESPONDER CALLED ME FROM THE SCENE. NOT SURE WHY SHE VEERED OFF WHEN SHE WAS ON THE LEFT MOST LANE. SHE SUDDENLY CROSSED 2 LANES AND SHOULDER AND ENDED UP IN A DITCH. SHE WAS NOT FATIGUED SINCE IT WAS LESS THAN 3 MIN SINCE SHE LEFT FROM THE OFFICE AND WE HAVE BLUE TOOTH HANDSFREE IN OUR 2009 ACURA MDX TECH. NOT SURE IF THE AIR BAG WENT OFF FALSELY OR IF SHE HAD A TIRE BURST. I KNOW BOTH FRONT TIRES WERE FLAT WHEN I SAW IT IN THE SALVAGE YARD. ALL SHE RECALLS IS AIR BAGS GOING OFF - NOT SURE IF THEY DEPLOYED BEFORE OR AFTER SHE HIT THE DITCH... HTTP://M.NWITIMES.COM/NEWS/LOCAL/LAKE/WOMAN-RUSHED-TO-TRAUMA-CENTER-AFTER-CRASH-IN-BURNS-HARBOR/ARTICLE_F7D452E6-980E-5EC1-AB08-C57A83E2BEDC.HTML?MOBILE_TOUCH=TRUE THERE WAS NO OTHER VEHICLE INVOLVED.. AN EERILY SIMILAR INCIDENT IN AN 2009 ACURA MDX VERY SIMILAR TO WHAT MY WIFE ENCOUNTERED ON NOV 5. HTTP://6ABC.COM/ARCHIVE/9502999/ I WANT THE NHTSA TO INVESTIGATE THIS.THE RESPONDING POLICE DEPARTMENT FOR THE NOV 5 INCIDENT IS THE BURNSHARBOR POLICE DEPARTMENT CONTACT PHONE. [XXX] FILE/CASE # [XXX] THANKS, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
WAS TOLD ON TODAY SHOW (NBC) THAT COULD CHECK TO SEE IF ACURA AIR BAGS NEED TO NE REPLACED EVEN THOUGH NOT AN OFFICIAL RECALL. PLEASE LET ME KNOW IF THESE AIRBAGS ARE THE ONES THAT ARE TO BE REPLACED AND IF SO, WHEN. MANY THANKS.
ONGOING PROBLEM WITH 2009 ACURA MDX- THE CHECK ENGINE WARNING LIGHT SPORADICALLY ILLUMINATES WHILE DRIVING INDICATING THAT THE VEHICLE SHOULD BE BROUGHT TO AN ACURA REPAIR FACILITY. THE DEALERSHIP SERVICE DEPARTMENT STATED THAT IT IS A FAULTY SENSOR AND IT IS A COMMON PROBLEM WITH THE 2009 ACURA MDX. THE DEALERSHIP FURTHER STATE…
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ONGOING PROBLEM WITH 2009 ACURA MDX- THE CHECK ENGINE WARNING LIGHT SPORADICALLY ILLUMINATES WHILE DRIVING INDICATING THAT THE VEHICLE SHOULD BE BROUGHT TO AN ACURA REPAIR FACILITY. THE DEALERSHIP SERVICE DEPARTMENT STATED THAT IT IS A FAULTY SENSOR AND IT IS A COMMON PROBLEM WITH THE 2009 ACURA MDX. THE DEALERSHIP FURTHER STATED THAT IT WOULD BE APPROXIMATELY $700.00 FOR THEM TO MAKE THE REPAIR AS ACURA HAS NOT YET ISSUED A RECALL NOTICE FOR THE SENSOR.
"NOX SENSOR WIRING HARNESS CHEWED BY MOUSE" PER ACURA DEALERSHIP. THERE IS NO EVIDENCE OF RODENT DAMAGE OR PRESENCE ELSEWHERE IN THE VEHICLE. ACCORDING TO THE ACURA DEALERSHIP, THERE WAS A PROBLEM WITH THE PRIOR MODELS PRIOR TO 2009, BUT MY PARTICULAR CAR DOESN'T HAVE THE PROBLEM. THE WIRING HAS BEEN COVERED BY HONDA RODENT DET…
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"NOX SENSOR WIRING HARNESS CHEWED BY MOUSE" PER ACURA DEALERSHIP. THERE IS NO EVIDENCE OF RODENT DAMAGE OR PRESENCE ELSEWHERE IN THE VEHICLE. ACCORDING TO THE ACURA DEALERSHIP, THERE WAS A PROBLEM WITH THE PRIOR MODELS PRIOR TO 2009, BUT MY PARTICULAR CAR DOESN'T HAVE THE PROBLEM. THE WIRING HAS BEEN COVERED BY HONDA RODENT DETERRENT TAPE AS SHOWING IN THE PICTURES. I HAVE CONTACTED ACURA/HONDA DEALERSHIPS, THEIR EXTENDED WARRANTY CUSTOMER SERVICE AND ALSO THE IRRESPECTIVE, ACURA/HONDA MANUFACTURER CUSTOMER SERVICE. THE SAME THING HAPPENED TO MY OTHER CAR (HONDA ODYSSEY 2009) WITHIN A SPAN OF ONE WEEK WITH EXACTLY SIMILAR PRESENTATION. WHEN I REQUESTED INFORMATION FROM THE ABOVE SOURCES, I WAS TOLD THAT THIS WAS CONFIDENTIAL INFORMATION AND IS NOT AVAILABLE FOR CUSTOMERS AND THAT IS IT IS A RARE EVENT AND NOT RELATED TO MANUFACTURING DEFECTS AND ALSO THERE WAS NO DEFINITIVE TREND IN ACURA/HONDA(SAME COMPANY) NOX SENSOR WIRING HARNESS CHEWED BY RODENTS AND HAVE REFUSED TO COVER IT UNDER EXTENDED WARRANTY PROGRAM TO WHICH I HAVE SUBSCRIBED/PURCHASED. I HAVE ANOTHER ENTRY REGARDING THE OTHER VEHICLE. *TR
THE MESSAGE CENTER CAME ON TELLING ME TO CHECK THE OIL LEVEL AND PRESSURE. PULL OVER ASAP AND HAVE IT TOWED TO NEAREST DEALER. THIS HAS HAPPENED SEVERAL TIMES NOW AND EACH TIME THEY SAY ITS A SENSOR BUT HOW MANY CAN THERE BE AND HOW CAN THEY KEEP GOING OUT. WHEN THIS IS HAPPENING THE WIPERS WILL SHORT OUT AS WELL AND RADIO W…
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THE MESSAGE CENTER CAME ON TELLING ME TO CHECK THE OIL LEVEL AND PRESSURE. PULL OVER ASAP AND HAVE IT TOWED TO NEAREST DEALER. THIS HAS HAPPENED SEVERAL TIMES NOW AND EACH TIME THEY SAY ITS A SENSOR BUT HOW MANY CAN THERE BE AND HOW CAN THEY KEEP GOING OUT. WHEN THIS IS HAPPENING THE WIPERS WILL SHORT OUT AS WELL AND RADIO WILL FADE IN AND OUT. THIS HAS TO BE A DEFECT WITHIN THE ELECTRICAL. *TR
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. *TR
TL* THE CONTACT OWNS A 2009 ACURA MDX. WHILE STARTING THE VEHICLE, THE ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAGNOSED THAT THE NOX SENSOR HARNESS HAD BEEN CHEWED ON BY RODENTS AND WOULD NEED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILE…
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TL* THE CONTACT OWNS A 2009 ACURA MDX. WHILE STARTING THE VEHICLE, THE ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAGNOSED THAT THE NOX SENSOR HARNESS HAD BEEN CHEWED ON BY RODENTS AND WOULD NEED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 74,000.
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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