NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
118 reportsClear category filter85,000 miles · Apr 3, 2012
Vehicle Speed Control
THE FORD FIVE HUNDRED I OWN HAS SURGES OF ACCELERATION WHEN I AM INCHING MY WAY INTO A PARKING SPOT OR FORWARD LOSER TO A WALL OR ANOTHER CAR. I HAVE TO QUICKLY SLAM ON MY BRAKES TO AVOID HITTING SOMETHING. I FEAR AT SOME POINT IT MAY BE A PERSON. THE PROBLEM HAS BEEN GOING ON FOR A WHILE BUT I WAS NEVER ABLE TO REPRODUCE IT FOR…
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THE FORD FIVE HUNDRED I OWN HAS SURGES OF ACCELERATION WHEN I AM INCHING MY WAY INTO A PARKING SPOT OR FORWARD LOSER TO A WALL OR ANOTHER CAR. I HAVE TO QUICKLY SLAM ON MY BRAKES TO AVOID HITTING SOMETHING. I FEAR AT SOME POINT IT MAY BE A PERSON. THE PROBLEM HAS BEEN GOING ON FOR A WHILE BUT I WAS NEVER ABLE TO REPRODUCE IT FOR A MECHANIC. I HAVE MADE A CONNECTION TO HOT WEATHER AND THE CAR'S AIR CONDITIONING BEING ON. I FEAR THIS IS NOT SAFE. *TR
NHTSA ODI #10453944
70,000 miles · Mar 20, 2012
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHEN STOPPED, THE VEHICLE WOULD LUNG FORWARD ABNORMALLY. THE FAILURE WOULD ALSO OCCUR WHEN THE VEHICLE WAS SHIFTED TO REVERSE. THE CONTACT DID NOT TAKE THE VEHICLE TO A DEALER FOR A DIAGNOSTIC TEST. THE CONTACT DIAGNOSED THE VEHICLE AND STATED THAT THE THR…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHEN STOPPED, THE VEHICLE WOULD LUNG FORWARD ABNORMALLY. THE FAILURE WOULD ALSO OCCUR WHEN THE VEHICLE WAS SHIFTED TO REVERSE. THE CONTACT DID NOT TAKE THE VEHICLE TO A DEALER FOR A DIAGNOSTIC TEST. THE CONTACT DIAGNOSED THE VEHICLE AND STATED THAT THE THROTTLE BOTTLE WAS FAULTY. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 70,000.
NHTSA ODI #10452420
105,000 miles · Mar 14, 2012
Vehicle Speed Control
AFTER STARTING CAR IN GARAGE AND IDLING FOR ABOUT 30 SECONDS, I PUT CAR IN REVERSE TO BACK OUT OF GARAGE. THE ENGINE RPM'S INCREASED SIGNIFICANTLY, AND THE CAR SHOT BACKWARDS UNTIL I APPLIED THE BRAKE. THE CAR STOPPED AND ENGINE RPM RETURNED TO NORMAL. THIS HAS HAPPENED SEVERAL TIMES. I AM THE SECOND OWNER OF THE CAR, AND I PURC…
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AFTER STARTING CAR IN GARAGE AND IDLING FOR ABOUT 30 SECONDS, I PUT CAR IN REVERSE TO BACK OUT OF GARAGE. THE ENGINE RPM'S INCREASED SIGNIFICANTLY, AND THE CAR SHOT BACKWARDS UNTIL I APPLIED THE BRAKE. THE CAR STOPPED AND ENGINE RPM RETURNED TO NORMAL. THIS HAS HAPPENED SEVERAL TIMES. I AM THE SECOND OWNER OF THE CAR, AND I PURCHASED THE CAR FROM A PRIVATE PARTY WITH ABOUT 104,000 MILES ON IT. IN SPEAKING WITH THE PREVIOUS OWNER, HE ALSO HAD PROBLEMS THAT HE ATTRIBUTED TO THE CRUISE CONTROL WHEREBY THE VEHICLE SPED UP WITHOUT PRESSING ON THE GAS PEDAL. THE ORIGINAL OWNER PURCHASED THE CAR FROM GENTRY FORD IN ONTARIO, OR, AND HAD EVERY SERVICE PERFORMED THERE. I, TOO, HAVE RETURNED THE CAR TO GENTRY FORD FOR EVERY SERVICE, BUT HAVE NOT DISCUSSED THIS PROBLEM WITH THEM, THE PREVIOUS OWNER DID TELL THEM ABOUT THE PROBLEM HE EXPERIENCED. *TR
NHTSA ODI #10451595
24,000 miles · Mar 13, 2012
Vehicle Speed ControlCrash
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE SHIFTING INTO DRIVE, THE VEHICLE ACCELERATED ABNORMALLY AND THE CONTACT CRASHED INTO A DUMPSTER. THERE WERE NO INJURIES. THE POLICE WERE CONTACTED AND A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO THE DEALER BUT THE MANUFACTURER WAS NOT CONTACTED.…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE SHIFTING INTO DRIVE, THE VEHICLE ACCELERATED ABNORMALLY AND THE CONTACT CRASHED INTO A DUMPSTER. THERE WERE NO INJURIES. THE POLICE WERE CONTACTED AND A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO THE DEALER BUT THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS REPAIRED. THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 24,000 AND THE CURRENT MILEAGE WAS 29,000.
NHTSA ODI #10451460
70,000 miles · Mar 12, 2012
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE THE VEHICLE WAS PARKED, THE VEHICLE ACCELERATED UNEXPECTEDLY WHEN SHIFTED INTO REVERSE OR DRIVE. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED AND THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 70…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE THE VEHICLE WAS PARKED, THE VEHICLE ACCELERATED UNEXPECTEDLY WHEN SHIFTED INTO REVERSE OR DRIVE. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED AND THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 70,000 AND THE CURRENT MILEAGE WAS 87,000.
NHTSA ODI #10451302
107,000 miles · Feb 17, 2012
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THE VEHICLE WOULD ABNORMALLY ACCELERATE WITHOUT WARNING AND OFTEN TIMES, WHEN THE BRAKE WAS APPLIED. IN ADDITION, THE VEHICLE WOULD STALL INTERMITTENTLY AND FAIL TO START. THE DEALER ADVISED THE CONTACT THAT THE THROTTLE BODY NEEDED TO BE REPLACED. THE MANUFAC…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THE VEHICLE WOULD ABNORMALLY ACCELERATE WITHOUT WARNING AND OFTEN TIMES, WHEN THE BRAKE WAS APPLIED. IN ADDITION, THE VEHICLE WOULD STALL INTERMITTENTLY AND FAIL TO START. THE DEALER ADVISED THE CONTACT THAT THE THROTTLE BODY NEEDED TO BE REPLACED. THE MANUFACTURER HAD NOT BEEN NOTIFIED OF THE FAILURE. NO REPAIRS WERE PERFORMED. THE CURRENT MILEAGE WAS 109,000 AND THE FAILURE MILEAGE WAS 107,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10448339
23,800 miles · Jan 25, 2012
Vehicle Speed ControlCrash
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE EXITING A RESIDENTIAL DRIVEWAY, THE VEHICLE SUDDENLY ACCELERATED WITHOUT ANY WARNING. THE CONTACT MENTIONED THAT AS A RESULT OF THE FAILURE, THE VEHICLE CRASHED THROUGH A WALL AND INTO AN APARTMENT. A POLICE REPORT WAS FILED AND NO INJURIES WERE REPORTE…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE EXITING A RESIDENTIAL DRIVEWAY, THE VEHICLE SUDDENLY ACCELERATED WITHOUT ANY WARNING. THE CONTACT MENTIONED THAT AS A RESULT OF THE FAILURE, THE VEHICLE CRASHED THROUGH A WALL AND INTO AN APARTMENT. A POLICE REPORT WAS FILED AND NO INJURIES WERE REPORTED. THE VEHICLE WAS TOWED TO THE DEALER WHO WAS NOT ABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS DESTROYED. THE FAILURE AND THE CURRENT MILEAGE WAS 23,800.
NHTSA ODI #10445210
65,000 miles · Jan 10, 2012
Vehicle Speed ControlCrash
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT WAS DRIVING 3 MPH WHEN THE BRAKES WERE DEPRESSED AND THE VEHICLE ABNORMALLY ACCELERATED. THE CONTACT CRASHED INTO A RESIDENTIAL CARPORT. THE VEHICLE WAS TAKEN TO THE DEALER AND THE DEALER CONFIRMED THAT THE THROTTLE SENSOR MALFUNCTIONED.THE MANUFACTURER WAS NOT CONTACTED…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT WAS DRIVING 3 MPH WHEN THE BRAKES WERE DEPRESSED AND THE VEHICLE ABNORMALLY ACCELERATED. THE CONTACT CRASHED INTO A RESIDENTIAL CARPORT. THE VEHICLE WAS TAKEN TO THE DEALER AND THE DEALER CONFIRMED THAT THE THROTTLE SENSOR MALFUNCTIONED.THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED AND THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 65,000 AND THE CURRENT MILEAGE WAS 67,000.
NHTSA ODI #10443288
130,800 miles · Dec 13, 2011
Vehicle Speed Control
I HAD JUST BOUGHT A 2006 FORD FIVE HUNDRED WITH ABOUT 131000 MILES. DROVE GREAT FROM THE DEALERSHIP THEN LATER THAT AFTERNOON THE THROTTLE ALL OF A SUDDEN WENT DEAD. I WAS GOING 65 MPH ON THE HIGHWAY AND HAD NO THROTTLE. I WENT ONLINE AND RESEARCHED THE CAR AND THERE HAVE BEEN NUMEROUS (UPWARDS OF 100+) PEOPLE WHO HAVE THE SAME…
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I HAD JUST BOUGHT A 2006 FORD FIVE HUNDRED WITH ABOUT 131000 MILES. DROVE GREAT FROM THE DEALERSHIP THEN LATER THAT AFTERNOON THE THROTTLE ALL OF A SUDDEN WENT DEAD. I WAS GOING 65 MPH ON THE HIGHWAY AND HAD NO THROTTLE. I WENT ONLINE AND RESEARCHED THE CAR AND THERE HAVE BEEN NUMEROUS (UPWARDS OF 100+) PEOPLE WHO HAVE THE SAME COMPLAINT. I JUST WISH FORD WOULD RECALL THE PART SO IT'S NOT GOING TO COST ME AN ARM AND A LEG TO FIX. *TR
NHTSA ODI #10439834
75,000 miles · Nov 23, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE DRIVING AT HIGHWAY SPEEDS THE ACCELERATOR PEDAL WOULD STICK IN A PARTIALLY DEPRESSED POSITION EVEN THOUGH HE WOULD BE DEPRESSING THE BRAKE PEDAL. THE VEHICLE WAS INSPECTED BY AN INDPENDENT MECHANIC AND THEY STATED THAT THE THROTTLE BODY FAILED AND NEEDE…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE DRIVING AT HIGHWAY SPEEDS THE ACCELERATOR PEDAL WOULD STICK IN A PARTIALLY DEPRESSED POSITION EVEN THOUGH HE WOULD BE DEPRESSING THE BRAKE PEDAL. THE VEHICLE WAS INSPECTED BY AN INDPENDENT MECHANIC AND THEY STATED THAT THE THROTTLE BODY FAILED AND NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER HAD NOT BEEN NOTIFIED. THE FAILURE MILEAGE WAS APPROXIMATELY 75,000. THE VIN WAS UNAVAILABLE. UPDATED 02/08/12
NHTSA ODI #10436839
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