NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
118 reportsClear category filter83,549 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
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
75,000 miles · Jul 20, 2011
Power TrainVehicle Speed ControlCrash
I HAVE A 06' FORD FIVE HUNDRED THAT I PURCHASED CERTIFIED USED IN 07'. WITHIN A FEW MONTHS I STARTED EXPERIENCING SURGING PROBLEMS ESPECIALLY WHEN THE A/C WAS RUNNING. THE DEALER REPLACED THE INSTRUMENT CLUSTER IN 08' BUT DID NOT FIX THE PROBLEM. ON EACH RETURN TO THE DEALERSHIP THEY COULD NOT FIX THE PROBLEM. ON MY LAST VIS…
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I HAVE A 06' FORD FIVE HUNDRED THAT I PURCHASED CERTIFIED USED IN 07'. WITHIN A FEW MONTHS I STARTED EXPERIENCING SURGING PROBLEMS ESPECIALLY WHEN THE A/C WAS RUNNING. THE DEALER REPLACED THE INSTRUMENT CLUSTER IN 08' BUT DID NOT FIX THE PROBLEM. ON EACH RETURN TO THE DEALERSHIP THEY COULD NOT FIX THE PROBLEM. ON MY LAST VISIT TO THE DEALER THEY CLEANED THE THROTTLE BODY AND SAID THAT WOULD FIX THE PROBLEM. THIS DID NOT FIX THE PROBLEM AND THEY COULD NOT DIAGNOSE THE PROBLEM. THIS PROBLEM HAS CAUSED ME TO REAREND A VEHICLE IN 2009. FORD IS NOT RESPONDING TO THE PROBLEM AT ALL. AFTER 3+ YEARS OF TRYING TO FIGURE OUT WHAT THE PROBLEM IS I ALL BUT HAVE GIVEN UP. THAT IS UNTIL TODAY WHEN THE REPAIR SHOP THAT I USE ON A REGULAR BASIS HIRED A NEW MECHANIC WHO WAS ABLE TO DIAGNOSE THE PROBLEM. THE PROBLEM TURNS OUT TO BE THE THROTTLE POSITION SENSORS IN THE THROTTLE BODY. IT TOOK THE MECHANIC OVER 2 HOURS TO GET TO THE BOTTOM OF THE PROBLEM. THE UNFORTUNATE THING IS THE COST OF A NEW THROTTLE BODY IS OVER $500 THEN ADD LABOR. IF I HAVE THE THROTTLE BODY REPLACED THERE IS NO GUARANTEE FROM FORD THAT THE NEW THROTTLE BODY WON'T DO THE SAME THING. IT IS OBVIOUS THAT FORD HAS A PROBLEM WITH THE THROTTLE BODY AND IS NOT WILLING TO RESOLVE THE ISSUE AND BACK THEIR PRODUCTS. *KB
NHTSA ODI #10413816
Mileage 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
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