NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
364 reports75,000 miles · Sep 1, 2011
Power Train
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE ATTEMPTING TO ACCELERATE FROM A STOP, THE VEHICLE HESITATED BEFORE QUICKLY ACCELERATING. AN ENGINE FAIL SAFE MODE MESSAGE ALSO ILLUMINATED ON THE INSTRUMENT PANEL AND THERE WAS AN INCREASE IN ENGINE RPMS DURING THE FAILURE. THE FAILURE HAD SINCE RECURRE…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE ATTEMPTING TO ACCELERATE FROM A STOP, THE VEHICLE HESITATED BEFORE QUICKLY ACCELERATING. AN ENGINE FAIL SAFE MODE MESSAGE ALSO ILLUMINATED ON THE INSTRUMENT PANEL AND THERE WAS AN INCREASE IN ENGINE RPMS DURING THE FAILURE. THE FAILURE HAD SINCE RECURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP, WHERE THE CONTACT WAS INFORMED THAT THE TRANSMISSION WOULD NEED TO BE REPAIRED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 75,000.
NHTSA ODI #10422887
38,000 miles · Aug 30, 2011
Power Train
THIS CAR IS SCARING ME AND ANYONE ELSE THAT HAS TO MOVE IT IN OR OUT OF A PARKING SPACE OR WHEN APPROACHING A LIGHT OR STOP SIGN. IT LUNGES FORWARD WHEN PUTTING IT IN ANY GEAR AND WHEN AT A STOP. THIS HAS BEEN HAPPENING FOR OVER A YEAR. I AM SO AFRAID SOMEONE IS GOING TO GET HIT OR PROPERTY DAMAGE WILL OCCUR. YOUR FOOT CAN BE P…
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THIS CAR IS SCARING ME AND ANYONE ELSE THAT HAS TO MOVE IT IN OR OUT OF A PARKING SPACE OR WHEN APPROACHING A LIGHT OR STOP SIGN. IT LUNGES FORWARD WHEN PUTTING IT IN ANY GEAR AND WHEN AT A STOP. THIS HAS BEEN HAPPENING FOR OVER A YEAR. I AM SO AFRAID SOMEONE IS GOING TO GET HIT OR PROPERTY DAMAGE WILL OCCUR. YOUR FOOT CAN BE PRESSED ON THE BRAKE AND IT STILL LUNGES FORWARDS OR BACKWARDS. THIS PROBLEM STARTED AT 38,000 AND IS GETTING INCREASINGLY WORSE. *TR
NHTSA ODI #10422700
83,549 miles · Aug 27, 2011
Engine And Engine CoolingFuel System, GasolineVehicle Speed Control
5/20-7/18/11 CAR ACCELERATED QUICKLY AND LURCHED BACKWARD WITH BRAKE ON WHILE BACKING OUT OF PARKING SPACE; WRENCH LIGHT CAME ON. ERROR CODES WERE FOR ALTERNATIVE FUEL CONTROL MODULE AND THROTTLE ACTUATOR CONTROL SYSTEM. SOMETIMES CAR LURCHED FORWARD WHILE BRAKING, ENGINE REVVED, CAR SHUDDERED, AND WRENCH AND/OR CHECK ENGINE LI…
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5/20-7/18/11 CAR ACCELERATED QUICKLY AND LURCHED BACKWARD WITH BRAKE ON WHILE BACKING OUT OF PARKING SPACE; WRENCH LIGHT CAME ON. ERROR CODES WERE FOR ALTERNATIVE FUEL CONTROL MODULE AND THROTTLE ACTUATOR CONTROL SYSTEM. SOMETIMES CAR LURCHED FORWARD WHILE BRAKING, ENGINE REVVED, CAR SHUDDERED, AND WRENCH AND/OR CHECK ENGINE LIGHT CAME ON. STARTED HAPPENING ALMOST DAILY. VERY SCARY AND UNPREDICTABLE. MASS AIR FLOW SENSOR AND EGR VALVE WERE REPLACED. HAD SAME ISSUES 2 DAYS LATER. THROTTLE BODY AND VACUUM HOSES WERE REPLACED. CONTACTED FORD AND THEY REFUSED TO COVER PARTS AND LABOR BECAUSE CAR WAS NO LONGER UNDER WARRANTY. LAST REPAIR WAS DONE 30 DAYS AGO AND I'VE HAD NO MORE PROBLEMS, BUT IT COST ME $1600 TO REPAIR.
NHTSA ODI #10423383
80,000 miles · Aug 23, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE ATTEMPTING TO PARK WITH HER FOOT ON THE BRAKES, THERE WAS AN INCREASE IN ENGINE RPMS AND THE VEHICLE SUDDENLY ACCELERATED. THE CONTACT MENTIONED THAT THE FAILURE RECURRED A TOTAL OF THREE TIMES PRIOR. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO WAS UN…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE ATTEMPTING TO PARK WITH HER FOOT ON THE BRAKES, THERE WAS AN INCREASE IN ENGINE RPMS AND THE VEHICLE SUDDENLY ACCELERATED. THE CONTACT MENTIONED THAT THE FAILURE RECURRED A TOTAL OF THREE TIMES PRIOR. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE PROBLEM WHO DID NOT OFFER ANY ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 80,000 AND THE CURRENT MILEAGE WAS 86,000.
NHTSA ODI #10421233
70,000 miles · Aug 22, 2011
Vehicle Speed ControlCrash
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED SUDDEN ACCELERATION WHILE REVERSING FROM A PARKING SPACE. THE VEHICLE ACCELERATED OVER A CURVE AND CRASHED INTO A FENCE, FRACTURING THE OIL PAN. A POLICE REPORT WAS FILED FOR THE INCIDENT. THE CONTACT HAD TO SHIFT INTO PARK IN ORDER TO…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED SUDDEN ACCELERATION WHILE REVERSING FROM A PARKING SPACE. THE VEHICLE ACCELERATED OVER A CURVE AND CRASHED INTO A FENCE, FRACTURING THE OIL PAN. A POLICE REPORT WAS FILED FOR THE INCIDENT. THE CONTACT HAD TO SHIFT INTO PARK IN ORDER TO GET THE VEHICLE TO STOP. THE VEHICLE WAS TAKEN TO THE DEALER AND THE CONTACT WAS TOLD THAT THE THROTTLE BODY NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. UPDATED 11/03/11*LJ UPDATED 11/30/11
NHTSA ODI #10420931
67,540 miles · Aug 9, 2011
Unknown Or Other
DEAR SIRS: MY 2006 FORD 500 HAS A VERY DANGEROUS DEFECT THAT HAS BEEN HAPPENING FOR OVER A YEAR. I HAVE COMPLAINED ABOUT IT SEVERAL TIMES TO THE FORD DEALER, BUT THE CAR WON'T MESS UP WHEN THE DEALER CHECKS IT OUT. TODAY MY WIFE STARTED THE CAR, PLACED HER FOOT ON THE BRAKE & SHIFTED THE CAR INTO REVERSE. BEFORE SHE HAD TIM…
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DEAR SIRS: MY 2006 FORD 500 HAS A VERY DANGEROUS DEFECT THAT HAS BEEN HAPPENING FOR OVER A YEAR. I HAVE COMPLAINED ABOUT IT SEVERAL TIMES TO THE FORD DEALER, BUT THE CAR WON'T MESS UP WHEN THE DEALER CHECKS IT OUT. TODAY MY WIFE STARTED THE CAR, PLACED HER FOOT ON THE BRAKE & SHIFTED THE CAR INTO REVERSE. BEFORE SHE HAD TIME TO REMOVE HER FOOT FROM THE BRAKE PEDAL, THE ENGINE SPED UP & THE CAR TRIED TO MOVE BACKWARD. IT'S A GOOD THING SHE HAD HER FOOT ON THE BRAKE. THE EXACT SAME THING HAS HAPPENED BEFORE IN FORWARD GEAR. I WAS IN THE CAR BESIDE HER & I WITNESSED HER FOOT ON THE BRAKE WHEN THE CAR TRIED,ON IT'S OWN TO TAKE OFF. IT'S A SCARY SITUATION & I NEED SOME HELP TO RESOLVE THE PROBLEM. *TR
NHTSA ODI #10418290
100,000 miles · Aug 5, 2011
Unknown Or Other
2006 FORD FIVE HUNDRED LIMIITED LUNGES FORWARD WHEN BRAKE IS APPLIED. *TT
NHTSA ODI #10417209
34,500 miles · Aug 3, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. WHILE ATTEMPTING TO MAKE A RIGHT TURN, THE CONTACT STATED THAT THE VEHICLE SUDDENLY ACCELERATED AND THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE DEALER DID NOT OFFER ANY ASSISTANCE SINCE THE VEHICLE WAS NO LONGER UNDER WARRANTY. THE MANUFACTURER WAS AWARE OF THE FAILURE. THE …
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. WHILE ATTEMPTING TO MAKE A RIGHT TURN, THE CONTACT STATED THAT THE VEHICLE SUDDENLY ACCELERATED AND THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE DEALER DID NOT OFFER ANY ASSISTANCE SINCE THE VEHICLE WAS NO LONGER UNDER WARRANTY. THE MANUFACTURER WAS AWARE OF THE FAILURE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO INSPECTED THE VEHICLE AND INFORMED THE CONTACT THAT THE THROTTLE BODY WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CURRENT MILEAGE WAS 34,601. THE APPROXIMATE FAILURE MILEAGE WAS 34,500. .. UPDATED 09/19/11 *BF THE CONSUMER STATED THE THROTTLE BODY WAS REPLACED AT A COST OF $ 54.30. THERE HAS BEEN NO FURTHER PROBLEMS. UPDATED 09/28/11*JB
NHTSA ODI #10416953
110,000 miles · Aug 3, 2011
Power TrainVehicle Speed Control
I HAVE A 2006 FORD FIVE HUNDRED, AND IT HAS RECENTLY THE ENGINE ACCELERATES THE VEHICLE DURING LOW SPEEDS IN FORWARD AND REVERSE, WHILE APPROACHING AN INTERSECTION WITH FOOT ON BRAKE. THIS HAS HAPPENS CONTINUOUSLY. I AM NOT SURE WHAT TO DO. I HAVE READ THE OTHER COMPLAINTS AND IT SEEMS THAT FORD IS NOT INTERESTED IN SOLVING THE …
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I HAVE A 2006 FORD FIVE HUNDRED, AND IT HAS RECENTLY THE ENGINE ACCELERATES THE VEHICLE DURING LOW SPEEDS IN FORWARD AND REVERSE, WHILE APPROACHING AN INTERSECTION WITH FOOT ON BRAKE. THIS HAS HAPPENS CONTINUOUSLY. I AM NOT SURE WHAT TO DO. I HAVE READ THE OTHER COMPLAINTS AND IT SEEMS THAT FORD IS NOT INTERESTED IN SOLVING THE PROBLEM. READ MORE: HTTP://WWW.FAQS.ORG/CAR/FORD-FIVE-HUNDRED-2006/FUEL-SYSTEM/#RECALLS_0#IXZZ1U0A0PMOY *KB
NHTSA ODI #10416943
72,500 miles · Jul 30, 2011
Fuel System, OtherPower Train
MY 2006 FORD FIVE HUNDRED ACCELERATES UNCONTROLLABLY. WHEN THE CAR IS SHIFTED INTO GEAR IT ACCELERATES WITHOUT THROTTLING. IT HAPPENS FROM PARK-TO-ANY GEAR AND SOMETIMES WHEN AT TRAFFIC STOPS. I'VE NOTICED THIS PROBLEM FOR A WHILE, BUT IT IS GETTING PROGRESSIVELY WORSE. SCARY!!! *TR
NHTSA ODI #10416334
NHTSA investigations
1PE11018 · Idle Instability
Opened May 11, 2011 · Closed Feb 7, 2013
Status: closed (inferred from source dates) · Vehicle Speed Control
On November 29, 2012, Ford Motor Company (Ford) initiated Customer Satisfaction Program 12N03 to extend warranty coverage terms for repair of engine idle RPM surge caused by throttle body deposits in all model year (MY) 2005 through 2007 Ford Freestyle, Five Hundred and Mercury Montego vehicles.The program extends the coverage for up to 10 years of service or 150,000 miles from the warranty start date of the vehicle (all vehicles are eligible for the program through May 31, 2013, regardless of mileage).Dealers will repair vehicles exhibiting the condition by removing and cleaning the throttle body and reprogramming the PCM with software containing an updated idle speed control strategy.According to Ford, some of the affected vehicles may experience momentary, intermittent engine idle RPM surge (idle flare) when stopped or during low speed driving maneuvers such as in a parking lot or driveway.Unstable idle speed control (dips and flares) around the target engine speed (700 rpm) can occur in vehicles with deposit build-up in the throttle body when the system adjusts engine speed in response to changes in engine load, typically from power steering application or air-conditioner compressor cycling.Idle speed control logic is only active at vehicle speeds below 3.5 mph and when the accelerator pedal is not applied.Ford testing of a vehicle with a worst case throttle body measured a maximum idle flare of 1360 RPM lasting approximately 1 second, which Ford indicated was consistent with system design to limit vehicle speed and acceleration in idle control mode.Ford indicated that the test vehicle was held in place with normal brake effort and that vehicle speed remained under 4 mph without the brake pedal applied.In addition to throttle body deposit accumulation, symptoms associated with the condition may include Check Engine lamp illumination and diagnostic trouble codes (DTCs) P0505, P0506 or P061B.Ford attributed the surge condition to changes in idle air flow resulting from the progressive buildup of deposits in the throttle body from normal Positive Crankcase Ventilation (PCV) system operation.This condition was not adequately compensated for in the original Powertrain Control Module (PCM) calibration.Ford issued a technical service bulletin on August 15, 2011 (TSB 11-8-5), releasing an updated powertrain control calibration for vehicles with CVT transmissions.On October 19, 2011, Ford issued a second bulletin (TSB 11-10-21) superseding TSB 11-8-5 and including updated powertrain control calibration for vehicles with 6-speed transmissions.Prior to Ford issuing the TSB?s, owner?s experiencing the alleged defect either received no repairs, if dealers could not duplicate the condition, or had the throttle body cleaned or replaced, which only provided temporary correction until the throttle deposit build-up returned.Ford?s revised powertrain calibrations appear to be effective remedies for the idle instability caused by build-up of throttle body deposits.However, even after the TSB?s were released, many owners experiencing the condition continued to have difficulty with proper diagnosis and repair as dealers were often either unable to duplicate the condition or were unfamiliar with the new repair procedures.Ford's new program addresses those concerns.NHTSA's testing and complaint analysis indicate that the idle speed control issue in the subject vehicles can only occur at very low speeds, are very brief events, are easily controlled by moderate brake pedal forces and result in minor increases in vehicle speed even with no braking.This investigation is closed.The closing of this in