THE POWER TRANSFER UNIT (PTU) FAILS ON A NUMBER OF FORD MODELS. THE SEAL LEAKS AND IN MY CASE THE UNIT NEEDED TO BE REPLACE BECAUSE OF METAL SHAVINGS. THE COST FOR REPAIRS $2,600.
2009 Ford Flex
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2009 Ford Flex do not stand out strongly from the model-year median of 139.
About this comparison →How this year compares
Owner complaints by model year
Compare all Flex 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
150 reports with mileage · 31 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.
- Engine. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
23 reportsMY FLEX STARTED HAVING A HARD JERK AND BANG WHEN GOING FROM REVERSE TO PARK. WAS NOT ALWAYS BUT FREQUENT. THE CAR STARTED TO RUN HOT WHEN SITTING IN A DRIVE THRU OR TRAFFIC BUT WOULD GO RIGHT BACK DOWN WHEN I STARTED MOVING. I TOOK IT INTO S MECHANIC AND HE REPLACED THE FAN. AFTER REPLACING THE FAN THE CAR BEGAN TO HAVE A REALLY…
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MY FLEX STARTED HAVING A HARD JERK AND BANG WHEN GOING FROM REVERSE TO PARK. WAS NOT ALWAYS BUT FREQUENT. THE CAR STARTED TO RUN HOT WHEN SITTING IN A DRIVE THRU OR TRAFFIC BUT WOULD GO RIGHT BACK DOWN WHEN I STARTED MOVING. I TOOK IT INTO S MECHANIC AND HE REPLACED THE FAN. AFTER REPLACING THE FAN THE CAR BEGAN TO HAVE A REALLY BAD GRINDING NOISE WHEN IDLING OR TRAVELING. DO BAD I DID NOT WANT TO DRIVE IT. I TOOK IT INTO THE FORD DEALERSHIP AND AFTER 2 DAYS THEY CALL AND SAY THEY CAN'T FIND ANYTHING WRONG. WITHIN 4 MINUTES I GET ANOTHER CALL DAYING I NEED A NEW TRANSMISSION. THE CAR WOULD ECCELLERATE ON ITS OWN, SHUT OFF INTERMITTENTLY, AND CAR WOULD LAG BETWEEN 3RD AND 4TH GEARS. FORD DEALERSHIP ADVISED ME TO HAVE A KNEW TRANSMISSION PUT IN. CAR WILL SHIFT PROPERLY MOST OF THE TIME EVEN ON HIGHWAY. ONLY GET WHINING NOISE AT LOW SPEEDS. I WAS ALSO IN AN ACCIDENT CAUSING $13000.00 WORTH OF DAMAGE TO FRONT END AND AIRBAGS DID NOT DEPLOY AFTER HITTING A CAR DOING 35 MPH.
MY FLEX STARTED MAKING A LITTLE GRINDING NOISE WHEN ONLY TURNING RIGHT AT FIRST. NOW IT SOUNDS REALLY BAD TURNING EITHER WAY. AND IT SHAKES WHEN ACCELERATING. *TR
VEHICLE STOP RUNNING NO POWER. *TR
ENGINE STUMBLED AND THEN LOST POWER. IT RE-STARTED BUT IDLED AT 750RPM. CAR WOULD NOT ACCELERATE. PLACING THE CAR INTO NEUTRAL AND DEPRESSING THE ACCELERATOR DID NOT INCREASE THE ENGINE SPEED. THIS PERSISTED ABOUT 3-4 MINUTES. AFTERWARDS, THE ENGINE SPEED RESPONDED TO THE ACCELERATOR, AND WHEN PLACED IN GEAR, ACCELERATED NORMALL…
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ENGINE STUMBLED AND THEN LOST POWER. IT RE-STARTED BUT IDLED AT 750RPM. CAR WOULD NOT ACCELERATE. PLACING THE CAR INTO NEUTRAL AND DEPRESSING THE ACCELERATOR DID NOT INCREASE THE ENGINE SPEED. THIS PERSISTED ABOUT 3-4 MINUTES. AFTERWARDS, THE ENGINE SPEED RESPONDED TO THE ACCELERATOR, AND WHEN PLACED IN GEAR, ACCELERATED NORMALLY. THIS HAS HAPPENED THREE TIMES IN THE PAST YEAR. *TR
DRIVING STOPPED AT A STOP SIGN NOTICED THE WRENCH LIGHT ON (HAPPENS OFTEN WHILE THIS HAPPENS WILL NOT ACCELERATE LIKE NORMAL UNTIL IT HITS 2-3RD GEAR). I PRESS THE GAS TO ACCELERATE AFTER MAKING THE TURN I HAD TO MAKE ANOTHER TURN ABOUT 1/4 MILE UP THE STREET. I RELEASED THE GAS TO MAKE THE TURN BUT MY CAR KEPT ACCELERATING IT W…
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DRIVING STOPPED AT A STOP SIGN NOTICED THE WRENCH LIGHT ON (HAPPENS OFTEN WHILE THIS HAPPENS WILL NOT ACCELERATE LIKE NORMAL UNTIL IT HITS 2-3RD GEAR). I PRESS THE GAS TO ACCELERATE AFTER MAKING THE TURN I HAD TO MAKE ANOTHER TURN ABOUT 1/4 MILE UP THE STREET. I RELEASED THE GAS TO MAKE THE TURN BUT MY CAR KEPT ACCELERATING IT WAS NOT GOING VERY FAST BUT THE ENGINE WAS ACCELERATING PUSHING THE RPMS UP TO 6000. MY FOOT WAS NOT ON THE GAS AND NOTHING WAS PRESSING THE GAS NO FLOOR MAT OR ITEMS IN THE WAY OF THE PEDALS. I PRESSED ON THE BREAK (WITH THE ENGINE STILL ACCELERATING) PUT THE CAR INTO NEUTRAL AND PULLED OVER. TURNED THE ENGINE OFF AND RESTARTED THE CAR. THE CAR RAN FINE AFTER RESTARTED IT. NO CHECK ENGINE LIGHT WAS ON AT ANY POINT JUST THE WRENCH LIGHT. THE LIGHT DID GO OFF AFTER I RESTARTED THE CAR. I DROVE IT ABOUT ANOTHER 40 MILES SINCE THIS HAS HAPPENED AND HAS NOT RECURRED SINCE. I DID HAVE THE CAR TAKEN IN TO CHECK THE CODES AT ABOUT 90K MILES (WITHOUT THE WRENCH LIGHT BECAUSE IT GOES OFF AS SOON AS YOU RESTART THE CAR) NOTHING CAME UP FOR CODES. *TR
TL* THE CONTACT OWNS A 2009 FORD FLEX. THE CONTACT STATED THAT WHENEVER SHIFTING INTO REVERSE, THE TRANSMISSION WOULD JERK VIOLENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER SIX TIMES FOR THE SAME FAILURE. THE TECHNICIAN DETECTED A TROUBLE CODE AND AN UNKNOWN REPAIR WAS PERFORMED ON THE TRANSMISSION. THE MALFUNCTION RECURR…
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TL* THE CONTACT OWNS A 2009 FORD FLEX. THE CONTACT STATED THAT WHENEVER SHIFTING INTO REVERSE, THE TRANSMISSION WOULD JERK VIOLENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER SIX TIMES FOR THE SAME FAILURE. THE TECHNICIAN DETECTED A TROUBLE CODE AND AN UNKNOWN REPAIR WAS PERFORMED ON THE TRANSMISSION. THE MALFUNCTION RECURRED AFTER THE REPAIR. THE VEHICLE TAKEN BACK TO THE DEALER FOR FURTHER REPAIRS. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 80,000. THE VIN WAS UNAVAILABLE.
OUR FORD FLEX CAME TO A STOP, (ENGINE DID NOT SHUT OFF) FROM APPROX. 10 MPH, WITHOUT THE DRIVER, MY WIFE, APPLYING THE BRAKES, IN A MALL PARKING LOT. SHE SHUT IT OFF AND STARTED IT AGAIN. IT DROVE FINE. SINCE WE HAVE HAD BRAKE ISSUES WITH THE FLEX BEFORE, WE IMMEDIATLY TOOK THE FLEX TO THE DEALER. THE DEALER SAID THEY CO…
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OUR FORD FLEX CAME TO A STOP, (ENGINE DID NOT SHUT OFF) FROM APPROX. 10 MPH, WITHOUT THE DRIVER, MY WIFE, APPLYING THE BRAKES, IN A MALL PARKING LOT. SHE SHUT IT OFF AND STARTED IT AGAIN. IT DROVE FINE. SINCE WE HAVE HAD BRAKE ISSUES WITH THE FLEX BEFORE, WE IMMEDIATLY TOOK THE FLEX TO THE DEALER. THE DEALER SAID THEY COULD FIND NOTHING WRONG, EVEN DRIVING IT "20 MILES" AROUND TOWN TO REPLICATE ANY PROBLEM. THEY ALSO SAID THEY CONTACTED FORD FOR ANY SUGGESTIONS. WE PICKED THE CAR UP TWO DAYS LATER AND MY WIFE & DAUGHTER DROVE THE CAR 350 MILES TO VISIT RELATIVES. WHILE ON THIS TRIP, THE CAR STALLED, ENGINE QUIT, IN TRAFFIC AT ABOUT 15 MPH. THIS HAPPENED RIGHT AFTER FILLING THE FLEX WITH FUEL. THE CAR STARTED AGAIN AND WAS TAKEN TO THE LOCAL FORD DEALER, WHERE THEY FOUND NOTHING WRONG. WE HAVE HAD MANY BRAKE ISSUES AS WELL WITH THIS VEHICLE. THE REAR BRAKES SMOKE FROM SELF APPLICATION (THE PARKING BRAKE WAS NOT ON), ENOUGH SMOKE THAT OTHER DRIVERS HAVE WAVED US DOWN ON THE ROAD THINKING THE FLEX'S BRAKES WERE ON FIRE. WE HAVE HAD THE REAR ROTORS AND CALIPERS REPLACED AT 15,300 MILES (UNDER WARRANTY) DO TO EXTREMELY QUICK WEAR. THE REAR BRAKES HAVE SMOKED AGAIN SINCE THIS REPLACEMENT. I'M BEGINNING TO THINK THESE PROBLEMS ARE RELATED IN THE ABS/TRACTION CONTROL/STABLITY CONTROL SYSTEM. OF COURSE, THE DEALER, AND APPARENTLY FORD, SAY THERE IS NOTHING WRONG. THE TRANSMISSION CLUNKS ("NOTHING WRONG") AND IS RELUCTANT TO DOWNSHIFT (SAFETY FACTOR WHEN IN TRAFFIC), THE FRONT BRAKES ARE MAKING THAT GRINDING NOISE OTHER OWNERS HAVE COMPLAINED ABOUT, AND TRIM PIECES FALL OFF THE CAR. THIS IS MY WIFE'S VEHICLE TO TRANSPORT KIDS IN AND WE ARE EXTREMELY FRUSTRATED WITH OUR FLEX AND FEEL THIS "FAMILY CAR" IS UNSAFE. WE ARE CONSIDERING CALIFORNIA'S "LEMON LAW" IF FORD AND THEIR DEALERS DON'T ACKNOWLEDE THAT THE FORD FLEX HAS SOME SERIOUS PROBLEMS.
2009 FORD FLEX TRANSMISSION SLIPPING ALMOST CAUSING ACCIDENT. *TR
TL* THE CONTACT OWNS A 2009 FORD FLEX. WHILE DRIVING APPROXIMATELY 5 MPH, THE VEHICLE WOULD NO LONGER ACCELERATE. THE CONTACT ATTEMPTED TO ACCELERATE BEYOND 5 MPH BUT THE VEHICLE WOULD NOT RESPOND. THE VEHICLE WAS PULLED OVER AND SHUT OFF. UPON RESTARTING, THE CONTACT WAS ABLE TO CONTINUE DRIVING NORMALLY. THE VEHICLE WAS TAKEN …
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TL* THE CONTACT OWNS A 2009 FORD FLEX. WHILE DRIVING APPROXIMATELY 5 MPH, THE VEHICLE WOULD NO LONGER ACCELERATE. THE CONTACT ATTEMPTED TO ACCELERATE BEYOND 5 MPH BUT THE VEHICLE WOULD NOT RESPOND. THE VEHICLE WAS PULLED OVER AND SHUT OFF. UPON RESTARTING, THE CONTACT WAS ABLE TO CONTINUE DRIVING NORMALLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS TOLD THAT THE ALL WHEEL DRIVE AND ANTI LOCK BRAKING SYSTEM ENGAGED SIMULTANEOUSLY, NOT ALLOWING THE VEHICLE TO ACCELERATE BEYOND 5 MPH. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 30,500.
Official recalls
116V247000 · Air Bags:frontal
Apr 26, 2016
Ford Motor Company (Ford) is recalling certain model year 2009-2012 Ford Flex, 2008 and 2010-2012 Ford Taurus, 2008-2009 Ford Taurus X, 2008 Mercury Sable, 2009 and 2011 Lincoln MKS vehicles. The driver frontal air bag may improperly inflate during second-stage deployment in the event of a high speed crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
Consequence & remedy
Consequence: An improperly inflated air bag increases the risk of injury in the event of a crash.
Remedy: Ford will notify owners, and dealers will inspect and replace the driver's frontal air bag module, as necessary, free of charge. The recall is expected to begin on June 13, 2016. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16C06.
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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