NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
36 reportsClear category filter93,000 miles · Oct 30, 2015
EngineUnknown Or Other
MY DAUGHTER WAS DRIVING ON INTERSTATE AT 70 MPH WHEN THE FLEX TOTALING SHUT DOWN. SHE HAD NO POWER STEERING, BRAKES OR LIGHTS. IT STARTED BACK UP AFTER A COUPLE OF HOURS AND WAS GIVING BOGUS MESSAGES ON THE DISPLAY. FORD DEALER SAYS THERE ARE NO CODES SHOWING UP, SO THEY WON'T BE ABLE TO DETERMINE WHAT CAUSED THIS. WE CANNOT…
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MY DAUGHTER WAS DRIVING ON INTERSTATE AT 70 MPH WHEN THE FLEX TOTALING SHUT DOWN. SHE HAD NO POWER STEERING, BRAKES OR LIGHTS. IT STARTED BACK UP AFTER A COUPLE OF HOURS AND WAS GIVING BOGUS MESSAGES ON THE DISPLAY. FORD DEALER SAYS THERE ARE NO CODES SHOWING UP, SO THEY WON'T BE ABLE TO DETERMINE WHAT CAUSED THIS. WE CANNOT DRIVE ANYMORE WITHOUT KNOWING WHAT HAPPENED, SINCE IT MIGHT HAPPEN AGAIN AND WOULD BE VERY DANGEROUS IF GOING OVER A MOUNTAIN PASS AT THE TIME IT HAPPENS. WE LIVE IN MONTANA.
NHTSA ODI #10787262
94,000 miles · May 29, 2015
Engine
CAR STALLED AT LOW SPEED. STARTED AGAIN WHEN STOPPED AND IN PARK. DURING EVENT, NO POWER STEERING / BRAKES AVAILABLE. NOT A SAFE CONDITION.
NHTSA ODI #10722268
Mileage unknown · Apr 21, 2015
Electrical SystemEngineUnknown Or Other
I PURCHASED THIS VEHICLE IN MAY, 2014 AS A USED VEHICLE W/WARRANTY (POWERTRAIN). WHILE TRAVELING FROM ST.LOUIS, MISSOURI IN STOP AND GO TRAFFIC, THE CAR OVERHEATED. AFTER SPEEDING UP TO GET OUT OF TRAFFIC IT SUDDENLY COOLED BACK OFF. NOW, DURING THIS SAME TIME, THE AIR CONDITIONER STOPPED BLOWING COOL AIR UNTIL WE SPED UP TO GET…
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I PURCHASED THIS VEHICLE IN MAY, 2014 AS A USED VEHICLE W/WARRANTY (POWERTRAIN). WHILE TRAVELING FROM ST.LOUIS, MISSOURI IN STOP AND GO TRAFFIC, THE CAR OVERHEATED. AFTER SPEEDING UP TO GET OUT OF TRAFFIC IT SUDDENLY COOLED BACK OFF. NOW, DURING THIS SAME TIME, THE AIR CONDITIONER STOPPED BLOWING COOL AIR UNTIL WE SPED UP TO GET OUT OF TRAFFIC. AFTER THAT, IT DIDN'T HAPPEN AGAIN UNTIL I WAS STUCK IN TRAFFIC. SAME PROBLEM. THE FANS STOPPED WORKING. HERE RECENTLY, I WAS STUCK IN TRAFFIC AND THE CAR OVERHEATED AND THE CHECK ENGINE LIGHT CAME ON. ONLY THIS TIME, WHEN I SPED UP THE CAR DIDN'T COOL DOWN. THE COOLANT WAS FINE BUT THE CAR STILL OVER HEATED. I TOOK THE CAR TO THE DEALERSHIP TODAY AND WAS TOLD THAT IT IS THE COOLING FAN MODULE AND IT SHOULD BE REPLACED. NOW, I'VE READ IN SEVERAL DIFFERENT PLACES THAT THIS IS A PROBLEM WITH 2008-2012 FORD FLEX VEHICLES. A RECALL WAS ISSUED FOR THE 2011-2012 SERIES BUT NOT EARLIER MODELS. OWNERS OF THESE VEHICLES SHOULD NOT HAVE TO BE RESPONSIBLE FOR FAULTY MATERIALS USED TO MAKE THESE VEHICLES. THE SAME RECALL THAT WAS AFFORDED TO THE 2011-2012 MODELS SHOULD ALSO BE AFFORDED TO OWNERS OF EARLIER MODELS. THE DEALERSHIP WANTS $600 TO REPAIR THIS BECAUSE MY WARRANTY ONLY COVERS POWERTRAIN. PLEASE ADDRESS THIS ASAP. I HAVE 6 CHILDREN AND CANNOT AFFORD TO SPEND $600 ON SOMETHING THAT IS NOT EVEN MY FAULT OR THE FAULT OF NORMAL WEAR AND TEAR. *TR
NHTSA ODI #10712094
78,000 miles · Sep 23, 2014
EngineFuel/propulsion SystemPower Train
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
NHTSA ODI #10638546
81,000 miles · May 13, 2014
Electrical SystemEngine
VEHICLE HAS HAD RADIATOR COOLING FAN(S) FAILURE(S) RESULTING IN LOSS OF POWER AND OVERHEATING. *TR
NHTSA ODI #10588180
67,540 miles · May 7, 2014
Electrical SystemEngine
VEHICLE OVERHEATED ON SEVERAL RANDOM OCCASIONS. AIR CONDITIONING BLOWS HOT AIR WHEN NOT MOVING. VEHICLE STALLED IN INTERSECTION ON SEVERAL RANDOM OCCASIONS. THE COOLING FAN RELAY WAS REPLACED WHICH TEMPORARILY CORRECTED ALL RELATED PROBLEMS. THIS EXACT SAME PROBLEM HAS NOW DEVELOPED AFTER 8000 MILES. AFTER LOOKING ON THE INTERNE…
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VEHICLE OVERHEATED ON SEVERAL RANDOM OCCASIONS. AIR CONDITIONING BLOWS HOT AIR WHEN NOT MOVING. VEHICLE STALLED IN INTERSECTION ON SEVERAL RANDOM OCCASIONS. THE COOLING FAN RELAY WAS REPLACED WHICH TEMPORARILY CORRECTED ALL RELATED PROBLEMS. THIS EXACT SAME PROBLEM HAS NOW DEVELOPED AFTER 8000 MILES. AFTER LOOKING ON THE INTERNET IT IS OBVIOUS THIS IS NOT AN ISOLATED PROBLEM. A RECALL HAS BEEN ISSUED FOR 2011 AND 2012 MODELS BUT NOT THE 09. THIS IS A SERIOUS PROBLEM THAT COULD DESTROY THE VEHICLES ENGINE OR WORSE GET SOME ONE KILLED IF IT STALLS WHILE CROSSING TRAFFIC. *TR
NHTSA ODI #10587016
100,200 miles · Mar 25, 2014
Electrical SystemEnginePower Train
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
NHTSA ODI #10574690
140,000 miles · Sep 18, 2013
Engine
WHILE DRIVE ON THE HIGHWAY WITH MY YOUNGEST SON, MY CAR SUDDENLY DECELLERATED AND EVENTUALLY THE CAR'S ENGINE COMPLETELY DIED. FOURTUNATLY I WAS ABLE TO GET OUT OF THE LANES OF TRAFFIC AND ONTO AN EXIT RAMP. THE RAMP HAD A WALL ON THE PASSENGER SIDE AND FAST EXITING TRAFFIC ON THE DRIVERS SIDE. I COULD NOT SAFELY EXIT THE VEHI…
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WHILE DRIVE ON THE HIGHWAY WITH MY YOUNGEST SON, MY CAR SUDDENLY DECELLERATED AND EVENTUALLY THE CAR'S ENGINE COMPLETELY DIED. FOURTUNATLY I WAS ABLE TO GET OUT OF THE LANES OF TRAFFIC AND ONTO AN EXIT RAMP. THE RAMP HAD A WALL ON THE PASSENGER SIDE AND FAST EXITING TRAFFIC ON THE DRIVERS SIDE. I COULD NOT SAFELY EXIT THE VEHICLE IN THIS LOCATION. AFTER ABOUT 5 MINUTES, I WAS ABLE TO START THE CAR ENOUGH TO MOVE IT TO A SAFER LOCATION 30-40 YARDS OFF THE EXIT (WHERE THE CAR AGAIN DIED). THERE WAS NO INDICATION ON EITHER MY TEMP GUAGE OR ANY WARNING LIGHTS THAT THE ENGINE HAD OVERHEATED TO THE POINT OF A CRACKED HEAD/BLOCK. AT THE TIME OF THIS INCIDENT, FORD WAS AWARE THAT THERE WERE ISSUES WITH THE CONTROL MODULE FOR THE COOLING FANS NOT WORKING AND HAD A CUSTOMER SATISFACTION PROGRAM 12B36 IN PLACE. I NEVER HEARD OF THE PROGRAM UNTIL THIS WEEK (9/18/13). I SHOULD HAVE BEEN INFORMED AS AN OWNER OF THIS POORLY ENGINEERED VEHICLE THAT IT HAD SUCH AN UNSAFE DEFECT. SINCE I WAS 40K MILES OUT OF WARRANTY FORD'S SOLUTION WAS FOR ME TO BUY A NEW ENGINE AT THE COST OF $8000. I HAVE BEEN SAVING UP FOR THE PAST 4 MONTHS TO PURCHASE A USED ENGINE AND HAVE A LOCAL GARAGE INSTALL IT. I AM NOT HAPPY ABOUT THIS VEHICLE PUTTING MY AND MY SON'S LIVES IN DANGER. I HOPE OTHERS WITH THIS VEHICLE DO NOT HAVE TO BE PUT IN HARMS WAY AS WELL.
NHTSA ODI #10544216
70,425 miles · Jul 12, 2013
Engine
TL* THE CONTACT OWNS A 2009 FORD FLEX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TOWED TO THE DEALER FOR DIAGNOSIS. THE TECHNICIAN STATED THAT THE WIRING HARNESS AND PCM WOULD HAVE TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WA…
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TL* THE CONTACT OWNS A 2009 FORD FLEX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TOWED TO THE DEALER FOR DIAGNOSIS. THE TECHNICIAN STATED THAT THE WIRING HARNESS AND PCM WOULD HAVE TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 70,425. *TR
NHTSA ODI #10524581
56,260 miles · May 6, 2013
EngineFuel/propulsion System
CHECK ENGINE LIGHT WENT ON AND WHEN DIAGNOSED IT WAS ONE OF THE OXYGEN SENSORS. IT HAD TO BE REPLACED IN ORDER FOR THE REST OF THE SAFETIES TO OPERATE PROPERLY. IT WAS A DEFECTIVE PART THAT COST OVER $400 TO REPLACE. WARRANTY WAS DECLINED, HOWEVER, THE DESIGN LIFE OF THE PART MUST BE IN EXCESS OF 150000 MILES. IF THIS PART W…
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CHECK ENGINE LIGHT WENT ON AND WHEN DIAGNOSED IT WAS ONE OF THE OXYGEN SENSORS. IT HAD TO BE REPLACED IN ORDER FOR THE REST OF THE SAFETIES TO OPERATE PROPERLY. IT WAS A DEFECTIVE PART THAT COST OVER $400 TO REPLACE. WARRANTY WAS DECLINED, HOWEVER, THE DESIGN LIFE OF THE PART MUST BE IN EXCESS OF 150000 MILES. IF THIS PART WERE FAILING ALL THE TIME, THERE WOULD BE A RECALL. MY DEFECTIVE PART WAS NOT REPLACED BY FORD AS IT SHOULD HAVE BEEN. THERE ARE NO MOVING PARTS, IT SHOULD NOT WEAR OUT. *TR
NHTSA ODI #10510850