NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
364 reportsMileage unknown · Jul 20, 2011
Power TrainVehicle Speed Control
2006 FORD FIVE HUNDRED SURGING AT LOW SPEED WHEN PUTTING INTO DRIVE AND REVERSE. THIS PROBLEM GAS OCCURRED ON MANY OCCASIONS WITH NEAR MISSES ON PARKING AND PEDESTRIANS AND MY RESEARCH HAS FOUND IT TO BE AN ISSUE WITH THE THROTTLE BODY CONTROL. WHEN IS THIS AGENCY GOING TO HELP THE CONSUMER IN A CASE AGAINST FORD?? ITS BEEN HAPP…
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2006 FORD FIVE HUNDRED SURGING AT LOW SPEED WHEN PUTTING INTO DRIVE AND REVERSE. THIS PROBLEM GAS OCCURRED ON MANY OCCASIONS WITH NEAR MISSES ON PARKING AND PEDESTRIANS AND MY RESEARCH HAS FOUND IT TO BE AN ISSUE WITH THE THROTTLE BODY CONTROL. WHEN IS THIS AGENCY GOING TO HELP THE CONSUMER IN A CASE AGAINST FORD?? ITS BEEN HAPPENING SINCE 2005 ON MANY OF THESES MODELS??? *KB
NHTSA ODI #10413807
67,673 miles · Jul 20, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED AS SHE ACCELERATED FROM A TRAFFIC LIGHT THE VEHICLE WOULD SUDDENLY ACCELERATE CAUSING THE RPMS TO INCREASE EXCESSIVELY. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THE THROTTLE BODY AS BEING DEFECTIVE. THE REPAIR COST WAS $900. THE MANUFACTURER WAS CONTACTE…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED AS SHE ACCELERATED FROM A TRAFFIC LIGHT THE VEHICLE WOULD SUDDENLY ACCELERATE CAUSING THE RPMS TO INCREASE EXCESSIVELY. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THE THROTTLE BODY AS BEING DEFECTIVE. THE REPAIR COST WAS $900. THE MANUFACTURER WAS CONTACTED BUT OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 67,673.
NHTSA ODI #10413718
81,000 miles · Jul 19, 2011
Unknown Or OtherVehicle Speed Control
WHILE PUTTING THE FORD FIVE HUNDRED IN REVERSE THE CAR BRIEFLY ACCELERATED AND LUNGED BACKWARDS BARLEY MISSING ANOTHER CAR. THINKING I MIGHT HAD HIT THE ACCELERATOR I WENT ON TO WHERE I WAS HEADED. AS I WAS LEAVING MY DESTINATION ONCE AGAIN THE CAR JUST TOOK OFF WHILE IN REVERSE. THE CAR THEN GAVE A WRENCH FAULT ON THE CONSOLE.…
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WHILE PUTTING THE FORD FIVE HUNDRED IN REVERSE THE CAR BRIEFLY ACCELERATED AND LUNGED BACKWARDS BARLEY MISSING ANOTHER CAR. THINKING I MIGHT HAD HIT THE ACCELERATOR I WENT ON TO WHERE I WAS HEADED. AS I WAS LEAVING MY DESTINATION ONCE AGAIN THE CAR JUST TOOK OFF WHILE IN REVERSE. THE CAR THEN GAVE A WRENCH FAULT ON THE CONSOLE. I LOOKED UP THE ISSUE IN THE MANUAL AND IT SAID IT WAS A THROTTLE CONTROL ISSUE. I SPOKE WITH THE DEALER TODAY AND THEY SAID IT WAS A THROTTLE BODY PROBLEM. UPON INVESTIGATION I FIND THAT THIS IS A RECURRING ISSUE. IF SOMEONE HAD BEEN WITHIN 3 TO 5 FEET OF MY AUTO I WOULD HAVE HIT THEM.
NHTSA ODI #10414390
77,000 miles · Jul 18, 2011
Power TrainVehicle Speed Control
2006 FORD FIVE HUNDRED SEL ON SEVERAL OCCASIONS OUR 2006 FORD FIVE HUNDRED HAS ACCELERATED WHILE PULLING INTO A PARKING SPOT IN A PARKING LOT OR INTO OUR GARAGE. THIS USUALLY OCCURS WHILE OUR FOOT IS ON THE BRAKE AT IDLE SPEED. ACCELERATION VARIES FROM MILD TO VERY NOTICEABLE BY THE PASSENGERS. CONCERNED ABOUT HITTING PEDES…
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2006 FORD FIVE HUNDRED SEL ON SEVERAL OCCASIONS OUR 2006 FORD FIVE HUNDRED HAS ACCELERATED WHILE PULLING INTO A PARKING SPOT IN A PARKING LOT OR INTO OUR GARAGE. THIS USUALLY OCCURS WHILE OUR FOOT IS ON THE BRAKE AT IDLE SPEED. ACCELERATION VARIES FROM MILD TO VERY NOTICEABLE BY THE PASSENGERS. CONCERNED ABOUT HITTING PEDESTRIANS OR OTHER VEHICLES OR LOSING CONTROL OF VEHICLE. *KB
NHTSA ODI #10413352
60,000 miles · Jul 18, 2011
Equipment
AIR CONDITIONING UNIT STARTED MAKING NOISES LAST YEAR (APPROX. AUGUST). TOOK IT TO THE DEALERSHIP AND THEY TOLD ME THE COMPRESSOR WAS GOING. THEY ALSO SAID THERE ARE SO MANY PROBLEMS WITH THAT COMPRESSOR THAT THEY WOULD NOT BE ABLE TO GET ONE UNTIL FEBRUARY. *KB
NHTSA ODI #10413342
110,000 miles · Jul 17, 2011
Fuel System, Gasoline
THE ENGINE SURGES WHEN YOU PUT IN DRIVE OR REVERSE. THIS IS VERY DANGEROUS. THIS IS MY WIFE'S CAR AND THIS PROBLEM HAS ME CONCERNED ABOUT HER SAFETY EVERY TIME SHE GETS IN THIS CAR. I THOUGHT ABOUT GETTING RID OF IT BUT I COULDN'T LET SOMEONE ELSE HAVE A CAR WITH THIS DANGEROUS PROBLEM. I HOPE SOMEONE CAN FIND OUT WHAT THE REMED…
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THE ENGINE SURGES WHEN YOU PUT IN DRIVE OR REVERSE. THIS IS VERY DANGEROUS. THIS IS MY WIFE'S CAR AND THIS PROBLEM HAS ME CONCERNED ABOUT HER SAFETY EVERY TIME SHE GETS IN THIS CAR. I THOUGHT ABOUT GETTING RID OF IT BUT I COULDN'T LET SOMEONE ELSE HAVE A CAR WITH THIS DANGEROUS PROBLEM. I HOPE SOMEONE CAN FIND OUT WHAT THE REMEDY IS FOR THIS PROBLEM. PLEASE HELP. *TR
NHTSA ODI #10413237
70,000 miles · Jul 15, 2011
Fuel System, Gasoline
A FUELD DELIVERY SYSTEM ISSUE ON MY 2006 FORD FIVE HINDRED. THE ENGINE ACCELERATES THE VEHICLE DURING LOW SPEEDS IN FORWARD AND REVERSE, WHILE APPROACHING AN INTERSECTION WITH FOOT ON BRAKE. THIS HAS HAPPEND 4 TIMES IN THE LAST WEEK.
NHTSA ODI #10412387
58,000 miles · Jul 14, 2011
Engine And Engine Cooling
WHILE RUNNING THE AIR CONDITIONER, THEN EITHER BRIEFLY SHUTTING OFF ENGINE OR IDLING IN PARK OR NEUTRAL, ONCE THE CAR IS SHIFTED INTO DRIVE GEAR THE ENGINE ACCELERATES ON ITS OWN, FOOT BREAK IS ON. RPMS INCREASE FOR 3-4 SECONDS THEN GO BACK DOWN TO NORMAL. THE CAR WAS UNABLE TO LURCH FORWARD ONLY BECAUSE I'VE HAD MY FOOT ON THE…
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WHILE RUNNING THE AIR CONDITIONER, THEN EITHER BRIEFLY SHUTTING OFF ENGINE OR IDLING IN PARK OR NEUTRAL, ONCE THE CAR IS SHIFTED INTO DRIVE GEAR THE ENGINE ACCELERATES ON ITS OWN, FOOT BREAK IS ON. RPMS INCREASE FOR 3-4 SECONDS THEN GO BACK DOWN TO NORMAL. THE CAR WAS UNABLE TO LURCH FORWARD ONLY BECAUSE I'VE HAD MY FOOT ON THE BREAK DUE TO MY SHIFTING OF GEARS (FROM PARK OR NEUTRAL TO DRIVE). THE FIRST TIME THIS HAPPENED I ONLY HAD THE BREAK PEDAL SLIGHTLY DEPRESSED - CAR JUMPED FORWARD - I FULLY DEPRESSED BRAKE PEDAL TO STOP. OCCURS INTERMITTENTLY BUT INTENSITY OF SURGE INCREASING. YESTERDAY HAD A MUCH STRONGER SURGE IN DRIVE-THRU, THEN CAR STALLED. WAS ABLE TO RESTART, ENGINE LIGHT HAS REMAINED ON SINCE YESTERDAY'S INCIDENT. TOP MOTOR MOUNT DAMPER (ROUND RUBBER DISK) IS CRACKED THRU AS WELL, PROBABLY DUE TO LURCHING.
NHTSA ODI #10412969
56,138 miles · Jul 13, 2011
Engine And Engine Cooling
DEAR SIR, MY CAR SURGES WHEN YOU TAKE IT OUT OF PARK WITH THE BRAKE APPLIED AND RELEASE THE BRAKE, IT WILL SURGE EITHER DIRECTION FORWARD OR REVERSE, REVERSE SEEMS TO BE THE MOST FREQUENT, IT DOES NOT SURGE EVERY TIME ABOUT 5 OUT OF 20 TIMES. VERY DANGEROUS WHEN TRYING TO BACK OUT OF PARKING SPACES, FORD DEALERS SAID THEY COULD…
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DEAR SIR, MY CAR SURGES WHEN YOU TAKE IT OUT OF PARK WITH THE BRAKE APPLIED AND RELEASE THE BRAKE, IT WILL SURGE EITHER DIRECTION FORWARD OR REVERSE, REVERSE SEEMS TO BE THE MOST FREQUENT, IT DOES NOT SURGE EVERY TIME ABOUT 5 OUT OF 20 TIMES. VERY DANGEROUS WHEN TRYING TO BACK OUT OF PARKING SPACES, FORD DEALERS SAID THEY COULD FIND NO PROBLEM. THE PROBLEM IS VERY REAL..
NHTSA ODI #10412814
90,000 miles · Jul 13, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE CAME TO A COMPLETE STOP WHILE THE BRAKE PEDAL WAS ENGAGED AND THE VEHICLE LUNGED FORWARD WITH HESITATION. THE IDENTICAL FAILURE OCCURRED FIFTEEN TIMES. DURING THE MOST RECENT FAILURE, THE ENGINE WARNING INDICATOR ILLUMINATED UNTIL THE …
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE CAME TO A COMPLETE STOP WHILE THE BRAKE PEDAL WAS ENGAGED AND THE VEHICLE LUNGED FORWARD WITH HESITATION. THE IDENTICAL FAILURE OCCURRED FIFTEEN TIMES. DURING THE MOST RECENT FAILURE, THE ENGINE WARNING INDICATOR ILLUMINATED UNTIL THE ENGINE WAS TURNED OFF. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO STATED THE THROTTLE BODY ASSEMBLY WOULD NEED TO BE REPLACED. THE CONTACT PLANNED TO HAVE THE VEHICLE REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 90,000.
NHTSA ODI #10412146
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