NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
364 reports69,250 miles · Aug 7, 2010
EquipmentVehicle Speed Control
AFTER HAVING BEEN DRIVEN FOR 30-45 MIN, THE CAR WAS PARKED WITH MOTOR RUNNING FOR 5-10 MIN. GOT BACK IN CAR, PUT FOOT ON BREAK PEDAL, SHIFTED CAR INTO REVERSE, LIFTED FOOT OFF BREAK PEDAL AND CAR SUDDENLY LURCHED BACKWARDS. SLAMMED BREAKS ON AND CAR SHUT OFF. CAR HAD NO PROBLEM CRANKING RIGHT UP. DID THE SAME THING AGAIN, ONLY T…
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AFTER HAVING BEEN DRIVEN FOR 30-45 MIN, THE CAR WAS PARKED WITH MOTOR RUNNING FOR 5-10 MIN. GOT BACK IN CAR, PUT FOOT ON BREAK PEDAL, SHIFTED CAR INTO REVERSE, LIFTED FOOT OFF BREAK PEDAL AND CAR SUDDENLY LURCHED BACKWARDS. SLAMMED BREAKS ON AND CAR SHUT OFF. CAR HAD NO PROBLEM CRANKING RIGHT UP. DID THE SAME THING AGAIN, ONLY THIS TIME I HAD IT IN DRIVE. HIT THE BREAKS, CAR DIES AGAIN. THIS HAS HAPPENED A FEW TIMES WHILE SITTING IN LINE AT A FAST FOOD DRIVE-THRU AND HAVE ALMOST HIT CARS INFRONT OF ME WHEN I GO TO MOVE UP IN THE LINE. IF YOU TURN THE CAR ALL THE WAY OFF, IT WILL RESET AND NOT HAVE ANY PROBLEMS UNTIL THE NEXT TIME IT DECIDES TO DO IT AGAIN. I SEEM TO BE ABLE TO ELICIT THE PROBLEM BY DRIVING THE CAR FOR 30 OR SO MINUTES, STOPPING AND LETTING THE CAR SIT AND IDLE FOR 5-10 MINUTES. BINGO- IT HAPPENS. FORD DEALERSHIP SAYS IT IS THE THROTTLE BODY ON MY 2006 FORD FIVE HUNDRED AND I ACTUALLY HAD IT REPLACED IN 2007 AT APPROX 23,000 MILES (I NOW HAVE 69,500 MILES). CAR IS AWD. THANK GOD I HAVE AN EXTENDED WARRANTY UNTIL 75,000 MILES THAT WILL COVER THIS BUT IT SEEMS THE PART TO FIX IT IS ON BACKORDER AND THEY ARE NOT SURE WHEN IT WILL BE AVAILABLE (THAT IS RIDICULOUS CONSIDERING HOW MUCH I HAVE READ ABOUT "THROTTLE BODY ISSUES" WITH THIS CAR.) I THINK IT SHOULD BE A RECALL ISSUE SINCE YOU COULD EASILY HIT SOMETHING INFRONT OR BEHIND YOU. THANKS FOR LETTING ME INFORM YOU OF THIS PROBLEM. *TR
NHTSA ODI #10347900
44,000 miles · Aug 2, 2010
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT WAS DRIVING AT 45 MPH. THE CONTACT DEPRESSED THE BRAKE PEDAL AND WHEN RELEASED, THE VEHICLE BEGAN TO ABNORMALLY ACCELERATE. IN ADDITION, THE VEHICLE WOULD ABNORMALLY JERK WHEN ATTEMPTING TO PARK. THE DEALER ADVISED THAT THE THROTTLE BODY WOULD NEED TO BE REPLACED. THE …
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT WAS DRIVING AT 45 MPH. THE CONTACT DEPRESSED THE BRAKE PEDAL AND WHEN RELEASED, THE VEHICLE BEGAN TO ABNORMALLY ACCELERATE. IN ADDITION, THE VEHICLE WOULD ABNORMALLY JERK WHEN ATTEMPTING TO PARK. THE DEALER ADVISED THAT THE THROTTLE BODY WOULD NEED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS 44,000. THE CONSUMER STATED THE TRANSMISSION WOULD BANG INTO DRIVE AND REVERSE. THE DEALER FOUND THE THROTTLE BODY CAUSING THE ISSUE, WHICH WAS REPLACED. UPDATED 10/26/10
NHTSA ODI #10346894
42,300 miles · Aug 1, 2010
Engine And Engine Cooling
PURCHASED A FORD FIVE-HUNDRED BRAND NEW IN 2006. AT LESS THAN 45K MILES THE A/C NO LONGER IS FUNCTIONAL, UNLESS DRIVEN AT HIGHER SPEEDS (SUCH AS THE CASE ON HIGHWAYS). I HAVE HAD BOTH LOW AND HIGH SIDE PRESSURE VALVES CHECKED, THERMOSTAT REPLACED, AND A/C UNIT FLUSHED TO NO AVAIL. *TR
NHTSA ODI #10346683
73,000 miles · Jul 28, 2010
Fuel System, OtherPower Train
MY 2006 FORD 500 LUNGES INTERMITTENTLY WHEN SHIFTING FROM PARK TO DRIVE OR REVERSE. THE CAR WAS TAKEN TO A REPAIR SHOP WHO COULD NOT REPRODUCE THE LUNGING AND SAID NOTHING APPEARED WRONG. SINCE IT ONLY OCCURS INTERMITTENTLY, IT IS DIFFICULT TO EVEN GET IT FIXED. IT APPEARS MANY OTHER FORD 500'S ARE HAVING THE SAME PROBLEM. *T…
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MY 2006 FORD 500 LUNGES INTERMITTENTLY WHEN SHIFTING FROM PARK TO DRIVE OR REVERSE. THE CAR WAS TAKEN TO A REPAIR SHOP WHO COULD NOT REPRODUCE THE LUNGING AND SAID NOTHING APPEARED WRONG. SINCE IT ONLY OCCURS INTERMITTENTLY, IT IS DIFFICULT TO EVEN GET IT FIXED. IT APPEARS MANY OTHER FORD 500'S ARE HAVING THE SAME PROBLEM. *TR
NHTSA ODI #10346004
Mileage unknown · Jul 28, 2010
Vehicle Speed Control
MANY MONTHS AGO MY 2006 FORD FIVE HUNDRED BEGAN JERKING FORWARD (ACCELERATING) WHEN SWITCHING GEARS FROM REVERSE TO DRIVE. OVER THE MONTHS THE PROBLEM HAS GOTTEN WORSE AND ACCELERATES VERY QUICKLY WHEN GOING INTO DRIVE GEAR. IT ACCELERATES SO QUICKLY IT COULD EASILY CAUSE ME TO RUN INTO SOMETHING. TOOK TO FORD SERVICE STATION AN…
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MANY MONTHS AGO MY 2006 FORD FIVE HUNDRED BEGAN JERKING FORWARD (ACCELERATING) WHEN SWITCHING GEARS FROM REVERSE TO DRIVE. OVER THE MONTHS THE PROBLEM HAS GOTTEN WORSE AND ACCELERATES VERY QUICKLY WHEN GOING INTO DRIVE GEAR. IT ACCELERATES SO QUICKLY IT COULD EASILY CAUSE ME TO RUN INTO SOMETHING. TOOK TO FORD SERVICE STATION AND TOLD THE THROTTLE (THROTTLE BODY MAYBE?) NEEDED TO BE REPLACED AND THAT IT WAS UNSAFE TO DRIVE UNTIL FIXED. THE PART IS ON BACK ORDER FOR TWO MONTHS! THE PART IS $800. NOW I'M PAYING FOR A CAR THAT I CAN'T EVEN DRIVE FOR TWO MONTHS. MANY PEOPLE HAVE COMPLAINED ONLINE ABOUT THE SAME TYPE OF PROBLEM AND APPARENTLY THERE IS A BIG PROBLEM WITH IT IF THE PART IS ON BACKORDER FOR 2 MONTHS SINCE SO MANY PEOPLE HAVE ORDERED IT. *TR
NHTSA ODI #10345833
45,000 miles · Jul 26, 2010
Power Train
I OWN A 2006 FORD FIVE HUNDRED. CAR SURGES FORWARD EVEN WHEN THE BRAKE PEDAL IS PRESSED. IT DOES THIS IN REVERSE ALSO - EVEN WHEN THE BRAKE PEDAL IS PRESSED. I HAVE FOUND THAT THE CAR DOES THIS MAINLY WHEN THE AIR CONDITIONING IS TURNED ON. IT IS EXTREMELY DANGEROUS TO TRY TO PARK THE CAR WHEN THE AIR CONDITIONING IS ON. THE…
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I OWN A 2006 FORD FIVE HUNDRED. CAR SURGES FORWARD EVEN WHEN THE BRAKE PEDAL IS PRESSED. IT DOES THIS IN REVERSE ALSO - EVEN WHEN THE BRAKE PEDAL IS PRESSED. I HAVE FOUND THAT THE CAR DOES THIS MAINLY WHEN THE AIR CONDITIONING IS TURNED ON. IT IS EXTREMELY DANGEROUS TO TRY TO PARK THE CAR WHEN THE AIR CONDITIONING IS ON. THE CAR SURGES FORWARD AND I HAVE ALMOST RUN INTO OTHER CARS WHEN TRYING TO PARK. THE DEALER RETRIEVED THE CODE FROM THE COMPUTER. THEY APPLIED THE LATEST UPDATES TO THE COMPUTER AND CLEARED THE CODE. THE DEALER TOLD ME IF THAT DID NOT SOLVE THE PROBLEM, I WOULD HAVE TO GET A NEW THROTTLE BODY AT APPROX. $400. SEVERAL WEEKS HAVE GONE BY AND THE PROBLEM IS GETTING WORSE. IT IS SCARY! I CALLED THE DEALER AND ASKED THEM TO ORDER A NEW THROTTLE BODY. IT APPEARS TO BE ON BACKORDER UNTIL 8/31/10. SO I AM ON A WAITING LIST. THIS IS A MAJOR SAFETY PROBLEM THAT FORD MOTOR COMPANY NEEDS TO TAKE CAR OF. THIS SHOULD BE A RECALL!!! FORD MOTOR COMPANY SHOULD MAKE THIS RIGHT. I AM DISAPPOINTED IN FORD. I HAVE OWNED FORD VEHICLES FOR 20 YEARS AND HAVE NEVER BEEN SO DISSATISFIED. *TR
NHTSA ODI #10345230
70,000 miles · Jul 9, 2010
Engine And Engine Cooling
MY FORD 500 HAS BEEN LUNGING FORWARD AND BACKWARD WHILE IN DRIVE AND REVERSE. IT HAS DONE IT SEVERAL TIMES IN DRIVE ALMOST CAUSING ME TO HIT THE CAR IN FRONT OF ME. IT DOES ESPECIALLY WHEN THE AIR CONDITIONER IS ON. I HAVE NOT HAD THE CARE REPAIRED AS OF THIS DATE. RESEARCH SHOW THAT THIS CURRENTLY HAPPENING TO MORE THAN A NORMA…
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MY FORD 500 HAS BEEN LUNGING FORWARD AND BACKWARD WHILE IN DRIVE AND REVERSE. IT HAS DONE IT SEVERAL TIMES IN DRIVE ALMOST CAUSING ME TO HIT THE CAR IN FRONT OF ME. IT DOES ESPECIALLY WHEN THE AIR CONDITIONER IS ON. I HAVE NOT HAD THE CARE REPAIRED AS OF THIS DATE. RESEARCH SHOW THAT THIS CURRENTLY HAPPENING TO MORE THAN A NORMAL AMOUNT OF FORD 500 OWNERS. I HAVE EMAIL FORD ABOUT THIS PROBLEM AND I AM WAITING ON A RESPONSE. *TR
NHTSA ODI #10342273
74,000 miles · Jul 8, 2010
Vehicle Speed Control
TL*THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE SURGED FORWARD WHILE HIS FOOT WAS ON THE BRAKE PEDAL. THE RPMS ALSO INCREASED AND CAUSED THE VEHICLE TO LUNGE FORWARD. WHEN THE VEHICLE BEGAN TO SLOW DOWN THE RPMS INCREASED AND CAUSED THE VEHICLE TO STALL. THE DEALER STATED THAT THE FAILURE WAS C…
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TL*THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE SURGED FORWARD WHILE HIS FOOT WAS ON THE BRAKE PEDAL. THE RPMS ALSO INCREASED AND CAUSED THE VEHICLE TO LUNGE FORWARD. WHEN THE VEHICLE BEGAN TO SLOW DOWN THE RPMS INCREASED AND CAUSED THE VEHICLE TO STALL. THE DEALER STATED THAT THE FAILURE WAS CAUSED BY THE THROTTLE BODY. THE DEALER ALSO STATED THAT AT THIS TIME FORD DOES NOT HAVE THE PART TO REPAIR THE VEHICLE. THE CONTACT DID NOT HAVE THE VIN WHEN THE COMPLAINT WAS FILED. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE 74000.
NHTSA ODI #10342041
60,000 miles · Jun 30, 2010
Power Train
WHEN SHIFTING INTO GEAR, OR WHEN TAKING FOOT OFF OF BRAKE AFTER SITTING FOR A BRIEF PERIOD, CAR LUNGES FORWARD (OR BACKWARDS) WITHOUT TOUCHING THE GAS PEDAL. THIS HAS CAUSED MANY NEAR ACCIDENTS INVOLVING BUILDINGS, OTHER AUTOS, AND PEDESTRIANS, VERY VERY DANGEROUS. FORD DEALERS CLAIM THEY CAN NEVER DUPLICATE THE PROBLEM WHILE …
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WHEN SHIFTING INTO GEAR, OR WHEN TAKING FOOT OFF OF BRAKE AFTER SITTING FOR A BRIEF PERIOD, CAR LUNGES FORWARD (OR BACKWARDS) WITHOUT TOUCHING THE GAS PEDAL. THIS HAS CAUSED MANY NEAR ACCIDENTS INVOLVING BUILDINGS, OTHER AUTOS, AND PEDESTRIANS, VERY VERY DANGEROUS. FORD DEALERS CLAIM THEY CAN NEVER DUPLICATE THE PROBLEM WHILE IT IS IN THEIR SHOP. SOMEONE IS GOING TO GET HURT DUE TO FORD AND THEIR INABILITY TO DO THE RIGHT THING AND MAKE PROPER REPAIRS AT THEIR EXPENSE. *TR
NHTSA ODI #10340755
62,000 miles · Jun 7, 2010
Vehicle Speed Control
TL*THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE SHIFTING INTO REVERSE OR DRIVE, THE ENGINE WOULD REV AND MOVE BACKWARD AT A QUICK RATE. ALSO WHEN IDLING IN TRAFFIC, IF THE CONTACT TURNED THE STEERING WHEEL LEFT OR RIGHT, THE ENGINE WOULD ALSO REV AND SHE WOULD HAVE TO DEPRESS THE BRAKE PEDAL WITH GREA…
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TL*THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT WHILE SHIFTING INTO REVERSE OR DRIVE, THE ENGINE WOULD REV AND MOVE BACKWARD AT A QUICK RATE. ALSO WHEN IDLING IN TRAFFIC, IF THE CONTACT TURNED THE STEERING WHEEL LEFT OR RIGHT, THE ENGINE WOULD ALSO REV AND SHE WOULD HAVE TO DEPRESS THE BRAKE PEDAL WITH GREAT FORCE TO KEEP THE VEHICLE FROM HITTING ANOTHER ONE. THE VEHICLE STALLED SEVERAL TIMES. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALERSHIP WHERE THE CONTACT WAS INFORMED THAT THE THROTTLE BODY NEEDED TO BE REPLACED. THE FAILURE MILEAGE WAS APPROXIMATELY 62,000. THE CURRENT MILEAGE WAS APPROXIMATELY 99,000.
NHTSA ODI #10335095
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