NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
70 reportsClear category filter104,000 miles · Sep 4, 2011
Vehicle Speed Control
WE HAVE HAD THE CAR FOR ABOUT 3 YEARS NOW, THE CAR SURGES A LITTLE WHEN IT IS PUT INTO GEAR (DRIVE, REVERSE), MORE RECENTLY THE CAR HAS BEGUN TO SURGE AND OR LUNGE SOMETIMES DANGEROUSLY WHEN THE CAR IS STOPPED. (NOT ALL THE TIME, RANDOMLY) I HAVE RESEARCHED THIS ISSUE ON THE INTERNET AND I HAVE DISCOVERED THAT ITS NOT COVERED …
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WE HAVE HAD THE CAR FOR ABOUT 3 YEARS NOW, THE CAR SURGES A LITTLE WHEN IT IS PUT INTO GEAR (DRIVE, REVERSE), MORE RECENTLY THE CAR HAS BEGUN TO SURGE AND OR LUNGE SOMETIMES DANGEROUSLY WHEN THE CAR IS STOPPED. (NOT ALL THE TIME, RANDOMLY) I HAVE RESEARCHED THIS ISSUE ON THE INTERNET AND I HAVE DISCOVERED THAT ITS NOT COVERED UNDER ANY FORD WARRANTY. I HAVEN'T FOUND A DEFINITIVE SOLUTION FOR THIS ISSUE EITHER. *TR
NHTSA ODI #10423209
80,000 miles · Sep 2, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE ACCELERATED ABNORMALLY AFTER BRAKING TO A COMPLETE STOP. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO PERFORMED A DIAGNOSTIC BUT FOUND NO FAILURE. THE DEALER WAS CONTACTED WHO ADVISED THAT THERE WAS A DESIGN FLAW WITHIN THE THROTTLE BODY THAT WAS…
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TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE ACCELERATED ABNORMALLY AFTER BRAKING TO A COMPLETE STOP. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO PERFORMED A DIAGNOSTIC BUT FOUND NO FAILURE. THE DEALER WAS CONTACTED WHO ADVISED THAT THERE WAS A DESIGN FLAW WITHIN THE THROTTLE BODY THAT WAS CAUSING THE FAILURE. THE MANUFACTURER WAS CONTACTED AND ADVISED THAT THEY WERE UNABLE TO PROVIDE ANY ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 80,000.
NHTSA ODI #10423086
69,886 miles · Aug 30, 2011
Fuel System, GasolineVehicle Speed Control
2007 FORD FIVE HUNDRED, IN JULY/AUGUST OF 2010, AT AROUND 70,000 MILES, BEGAN TO HAVE IRREGULAR ACCELERATION AND WOULD LUNGE FORWARD WHILE BRAKING OR AT A COMPLETE STOP WITH BRAKE PEDAL PUSHED ALL THE WAY TO THE FLOOR BOARD. HAD THE DEALERSHIP RUN THE DIAGNOSIS, WAS TOLD IT WAS THE THROTTLE BODY AND IT NEEDED REPLACING. HAD TH…
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2007 FORD FIVE HUNDRED, IN JULY/AUGUST OF 2010, AT AROUND 70,000 MILES, BEGAN TO HAVE IRREGULAR ACCELERATION AND WOULD LUNGE FORWARD WHILE BRAKING OR AT A COMPLETE STOP WITH BRAKE PEDAL PUSHED ALL THE WAY TO THE FLOOR BOARD. HAD THE DEALERSHIP RUN THE DIAGNOSIS, WAS TOLD IT WAS THE THROTTLE BODY AND IT NEEDED REPLACING. HAD THE REPAIR WORK DONE AT THE DEALERSHIP ON AUGUST 12, 2010. ON AUGUST 30, 2011, TOOK MY CAR BACK TO THE DEALERSHIP AFTER HAVING THE SAME PROBLEM REPEAT, ONLY MORE AGGRESSIVE FROM THE FIRST INCIDENT JUST TWO DAYS AGO, EVEN AS I PULLED INTO THE DEALERSHIPS SERVICE PARKING SPACE. WAS TOLD THEY WILL HAVE TO DIAGNOSIS THE PROBLEM AGAIN, NOTHING IS UNDER WARRANTY. I AM JUST OVER THE 12 MONTHS, AND AT ABOUT 30,000 MILES AFTER THE REPAIR WAS DONE LAST YEAR. WARRANTY OR NOT, THIS REPAIR SHOULD HAVE LASTED THE LIFE OF THE CAR OR AT LEAST ANOTHER 70,000 MILES, NOT 30,000. I DIDN'T HAVE THE DEALERSHIP KEEP THE OLD THROTTLE BODY. THE WARRANTY COMPANY HAD TOLD ME LAST YEAR THAT THE PART, THE THROTTLE BODY WAS ON BACK ORDER, BUT THE DEALERSHIP HAD NO PROBLEM GETTING THE PART, SUPPOSEDLY. I'M CONCERNED THE PART WASN'T REPLACED, BUT I HAVE NO EVIDENCE OF SUCH. I HAVE NOTICED EACH TIME, THE PROBLEM IS WORSE AFTER I HAVE THE CAR IDLING FOR A TIME BEFORE PUTTING IN GEAR, REVERSE OR DRIVE. REPAIR ORDER DETAIL - INTERNAL COPY READS "INSPECTED AND TESTED VEHICLE FOR ACCELERATING WITHOUT A COMMAND. RAN SELF TEST TO RETRIEVE PASS CODES. INSTALLED MONITOR AND FUEL PRESSURE GAUGE TO ROAD TEST. TESTING RESULTED FINDING THE THROTTLE MOTOR BINDING INTERMEDIATELY. THE THROTTLE BODY WAS REMOVED TO INSPECT AND REPLACE. THE PROCESSOR WAS REPROGRAMMED AND RETESTED TO VERIFY OPERATION." I HAD TO PAY FOR FUEL INJECTION SERVICE, REPLACE FUEL FILTER, WHICH I WAS TOLD I NEEDED TO HAVE DONE WITH THE REPAIR/REPLACEMENT OF THE THROTTLE BODY. *TR
NHTSA ODI #10422693
83,000 miles · Aug 29, 2011
Vehicle Speed ControlCrash
TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE IN REVERSE, THE VEHICLE SUDDENLY SURGED BACKWARD AND CRASHED INTO A WALL. THE CONTACT ALSO STATED THAT THE VEHICLE AND THE WALL DID NOT SUFFER MUCH DAMAGE FROM THE CRASH. NO INJURIES WERE REPORTED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHERE TH…
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TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE IN REVERSE, THE VEHICLE SUDDENLY SURGED BACKWARD AND CRASHED INTO A WALL. THE CONTACT ALSO STATED THAT THE VEHICLE AND THE WALL DID NOT SUFFER MUCH DAMAGE FROM THE CRASH. NO INJURIES WERE REPORTED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHERE THE CONTACT WAS INFORMED THAT THE THROTTLE BODY WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE DEALER REPLACED THE THROTTLE BODY. THE CONTACT ALSO STATED THAT DEFECTIVE THROTTLE BODIES WERE A KNOWN ISSUE AMONG THIS YEAR, MAKE, AND MODEL VEHICLE. THE FAILURE MILEAGE WAS 83,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10422473
58,000 miles · Aug 16, 2011
Power TrainVehicle Speed Control
I HAVE A 2007 FORD 500 THAT STARTED SURGING FORWARD AND BACKWARD. I TOOK THE CAR AND MY EXTENDED WARRANTY TO A FORD DEALERSHIP ONLY TO LEARN THAT THE DEALER THAT I BOUGHT THE CAR FROM HAD BACK-DATED MY WARRANTY TO THE TIME THE CAR WAS PUT IN SERVICE. (I HAD PURCHASED THE CAR AS A "PROGRAM" CAR.) MY WARRANTY HAD RUN OUT ACCORD…
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I HAVE A 2007 FORD 500 THAT STARTED SURGING FORWARD AND BACKWARD. I TOOK THE CAR AND MY EXTENDED WARRANTY TO A FORD DEALERSHIP ONLY TO LEARN THAT THE DEALER THAT I BOUGHT THE CAR FROM HAD BACK-DATED MY WARRANTY TO THE TIME THE CAR WAS PUT IN SERVICE. (I HAD PURCHASED THE CAR AS A "PROGRAM" CAR.) MY WARRANTY HAD RUN OUT ACCORDING TO THEM 6 DAYS BEFORE I TOOK IT TO THE DEALERSHIP. I WROTE A LETTER TO FORD AND THEY REFUSED TO HONOR IT EVEN THOUGH I THOUGHT I HAD PURCHASED A 5 YEAR, 100,000 MILE WARRANTY. THE CAR IS STILL SURGING FORWARD AND BACKWARD AND FORD REFUSES TO DO ANYTHING. I WILL NEVER PURCHASE ANOTHER FORD PRODUCT. I HAVE OWNED LINCOLNS AND FORDS ALL OF MY LIFE AND I WILL NEVER GET ANOTHER ONE. I CANNOT BELIEVE FORD REFUSES TO TAKE CARE OF THEIR CUSTOMERS. THIS IS OBVIOUSLY A SAFETY HAZARD THAT FORD NEEDS TO REPAIR. SEEING ALL OF THE COMPLAINTS THAT PEOPLE HAVE SENT IN, FORD KNOWS THAT THEY ARE IN THE WRONG AND STILL THEY DO NOTHING. *KB
NHTSA ODI #10419614
58,000 miles · Aug 15, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED WHEN STARTING THE VEHICLE AND SHIFTING IN REVERSE, THE VEHICLE WOULD ACCELERATE UNCONTROLLABLY IF THE BRAKES WERE NOT DEPRESSED. THE DEALER WAS NOTIFIED REGARDING THE FAILURE AND STATED THAT THE THROTTLE BODY WAS DEFECTIVE. THE VEHICLE WAS REPAIRED. THE FAILURE MI…
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TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED WHEN STARTING THE VEHICLE AND SHIFTING IN REVERSE, THE VEHICLE WOULD ACCELERATE UNCONTROLLABLY IF THE BRAKES WERE NOT DEPRESSED. THE DEALER WAS NOTIFIED REGARDING THE FAILURE AND STATED THAT THE THROTTLE BODY WAS DEFECTIVE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 58,000.
NHTSA ODI #10419482
43,000 miles · Aug 10, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS, THE VEHICLE WOULD SUDDENLY ACCELERATE WITHOUT WARNING. THE DEALER ADVISED THE CONTACT THAT THE THROTTLE BODY WAS NOT WORKING PROPERLY AND NEEDED TO BE REPLACED. THE MANUFACTURER HAD NOT BEEN NOTIFIED AND THE VEHICLE WAS NOT REPAIR…
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TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS, THE VEHICLE WOULD SUDDENLY ACCELERATE WITHOUT WARNING. THE DEALER ADVISED THE CONTACT THAT THE THROTTLE BODY WAS NOT WORKING PROPERLY AND NEEDED TO BE REPLACED. THE MANUFACTURER HAD NOT BEEN NOTIFIED AND THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 43,000 AND THE CURRENT MILEAGE WAS 44,000. PROBLEM GOT WORSE INCLUDE ACCELERATION IN REVERSE AS WELL AS FORWARD. REPLACED THROTTLE BODY AND ACCELERATOR MODULE PROBLEM SOLVED. UPDATED 11/16/2011 *LN
NHTSA ODI #10418418
Mileage unknown · Aug 10, 2011
Vehicle Speed Control
2007 FORD FIVE HUNDRED. CONSUMER STATES POWER TRAIN SURGE *TGW THE DEALER INFORMED THE CONSUMER THERE WAS NO FACTORY DEFECT WITH THE VEHICLE.
NHTSA ODI #10417532
48,700 miles · Aug 8, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE WOULD LUNGE FORWARD WHILE IN DRIVE AND BACKWARD WHILE IN REVERSE, WHETHER A FOOT WAS ON OR OFF THE BRAKE PEDAL. THE DEALER WAS NOTIFIED, BUT DENIED ANY ASSISTANCE WITH REPAIRS TO THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE…
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TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE WOULD LUNGE FORWARD WHILE IN DRIVE AND BACKWARD WHILE IN REVERSE, WHETHER A FOOT WAS ON OR OFF THE BRAKE PEDAL. THE DEALER WAS NOTIFIED, BUT DENIED ANY ASSISTANCE WITH REPAIRS TO THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 48,700 AND THE CURRENT MILEAGE WAS 53,000.
NHTSA ODI #10418003
80,000 miles · Aug 2, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE DRIVING, THE VEHICLE WOULD LUNGE FORWARD AND RESPOND SLOWLY WHEN THE ACCELERATOR WAS DEPRESSED. IN ADDITION, THE VEHICLE WOULD STALL AT ANY TIME WITHOUT WARNING. THE DEALER DIAGNOSED THAT THE THROTTLE BODY NEEDED TO BE REPLACED. THE VEHICLE WAS NOT R…
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TL* THE CONTACT OWNS A 2007 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE DRIVING, THE VEHICLE WOULD LUNGE FORWARD AND RESPOND SLOWLY WHEN THE ACCELERATOR WAS DEPRESSED. IN ADDITION, THE VEHICLE WOULD STALL AT ANY TIME WITHOUT WARNING. THE DEALER DIAGNOSED THAT THE THROTTLE BODY NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 80,000 AND THE CURRENT MILEAGE WAS 93,000.
NHTSA ODI #10416628
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