NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
104 reportsClear category filter90,000 miles · Feb 1, 2017
EnginePower TrainVehicle Speed Control
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. WHILE DRIVING 60 MPH, THE VEHICLE FAILED TO ACCELERATE AND THE POWER TRAIN WRENCH ICON ILLUMINATED. THE CONTACT WAS ABLE TO SHUT OFF AND RESTART THE VEHICLE IN ORDER TO OPERATE NORMALLY. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE ELECTRONIC THROTTLE BODY SENSO…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. WHILE DRIVING 60 MPH, THE VEHICLE FAILED TO ACCELERATE AND THE POWER TRAIN WRENCH ICON ILLUMINATED. THE CONTACT WAS ABLE TO SHUT OFF AND RESTART THE VEHICLE IN ORDER TO OPERATE NORMALLY. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE ELECTRONIC THROTTLE BODY SENSOR FAILED, SENDING THE VEHICLE INTO "LIMP MODE", AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE PERSISTED ON SEVERAL OCCASIONS. THE CONTACT MENTIONED THAT THE ELECTRONIC THROTTLE BODY SENSOR WAS REPLACED TWICE. THE VEHICLE RECENTLY WENT INTO "LIMP MODE" AGAIN. THE DEALER PERFORMED A DIAGNOSTIC TEST, BUT A FAILURE CODE COULD NOT BE FOUND. THE VEHICLE WAS ALSO TEST DRIVEN, BUT THE FAILURE WAS NOT DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000.
NHTSA ODI #10948887
125,000 miles · Jan 23, 2017
Power Train
WHEN TEMPERATURE IS BELOW 25 DEGREES FAHRENHEIT TRANSMISSION EITHER GOES INTO SAFETY MODE OR STOPS WORKING ( NO FORWARD OR REVERSE, A BIT UNNERVING IN AT INTERSECTION). WHEN TRANSMISSION WARMS OR AMBIENT TEMPERATURE IS ABOVE 25 DEGREES WORKS FINE. THIS IS A REPEATABLE EVENT, SO APPEARS TO BE A DESIGN FLAW AND NOT A MECHANICAL …
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WHEN TEMPERATURE IS BELOW 25 DEGREES FAHRENHEIT TRANSMISSION EITHER GOES INTO SAFETY MODE OR STOPS WORKING ( NO FORWARD OR REVERSE, A BIT UNNERVING IN AT INTERSECTION). WHEN TRANSMISSION WARMS OR AMBIENT TEMPERATURE IS ABOVE 25 DEGREES WORKS FINE. THIS IS A REPEATABLE EVENT, SO APPEARS TO BE A DESIGN FLAW AND NOT A MECHANICAL FAILURE. HAVE REVIEWED SITES AND HAVE OTHER OWNERS WITH SIMILAR EXPERIENCE PROBLEMS. TOOK TO FORD DEALER AND TOLD $2500.00USD TO FIX BUT THEN STATED UNCLEAR IF IR WOULD FIX PROBLEM. PLEASE REMEMBER IT IS NOT A MECHANICAL PROBLEM BUT TEMPERATURE RELATED AS AUTO WORKS WITHIN SPECIFICATIONS WHEN TEMPERATURE IS WARMER. THIS IS A ALL WHEEL VEHICLE, SO DESIGNED FOR WINTER WEATHER. *TR
NHTSA ODI #10946972
75,000 miles · Dec 27, 2016
Power Train
2006 FORD FIVE HUNDRED, INTERNAL FAILURE OF CVT TRANSMISSION (TORQUE CONVERTER AND SHAFT), NO NOTICE. DROVE AND ENTERED PARKING SPOT, PUT CAR IN REVERSE AND NO GEAR. PUT BACK IN D AND NO GEAR. WRENCH LIGHT THEN CAME ON AND BECAME A RATHER EXPENSIVE 10 MILE TOW CAR WAS WELL TAKEN CARE OF AND NOW NEEDS TRANSMISSION AT 75K. UNBELIE…
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2006 FORD FIVE HUNDRED, INTERNAL FAILURE OF CVT TRANSMISSION (TORQUE CONVERTER AND SHAFT), NO NOTICE. DROVE AND ENTERED PARKING SPOT, PUT CAR IN REVERSE AND NO GEAR. PUT BACK IN D AND NO GEAR. WRENCH LIGHT THEN CAME ON AND BECAME A RATHER EXPENSIVE 10 MILE TOW CAR WAS WELL TAKEN CARE OF AND NOW NEEDS TRANSMISSION AT 75K. UNBELIEVABLE NUMEROUS NATIONWIDE COMPLAINTS BUT NO RESPONSES BY FORD. PLEASE NOTE FORD NO LONGER USES THIS TYPE OF TRANSMISSION IN THEIR VEHICLES. THEY OWN THE REBUILT PARTS AND COSTS ARE IN THOUSANDS RANGE TO REPLACE. NOT ACCEPTABLE. UNSAFE AND SHOULD BE HELD ACCOUNTABLE TO PROVIDE SAFE, RELIABLE VEHICLES. HAVE OWNED NUMEROUS FORDS AND NEVER AN ISSUE. THIS IS A TRUE HAZARD! NOW VEHICLE IS NOTHING MORE THAN A DRIVEWAY ORNAMENT WHERE THE COST TO REPAIR IS MORE THE ENTIRE VALUE OF THE VEHICLE! UPDATED 02/08/17*LJ THE CONSUMER REQUESTED A STATUS UPDATE. UPDATED 12/1/2017*JS
NHTSA ODI #10937720
130,000 miles · Jun 2, 2016
Electronic Stability Control (esc)EnginePower Train
THROTTLE BODY IS DEFECTIVE DUE TO BUILD UP WITHIN THE THROTTLE BODY'S VALVE CAUSING IT TO STICK OPEN OR STAY CLOSED DURING REVERSE AND FORWARD DRIVING. THIS IN RETURN CAUSES A SURGE WHERE AT ANY UNSUSPECTING MOMENT THE VEHICLE WOOD ATTEMPT TO DRIVE EITHER IN REVERSE OR FORWARD ON ITS OWN REGARDLESS YOU PHYSICALLY PRESSING THE BR…
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
NHTSA ODI #10872121
56,000 miles · Feb 24, 2015
EnginePower TrainCrash
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE HAD AN UNEXPECTED ACCELERATION AS THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT WAS UNABLE TO STOP THE VEHICLE OR PLACE IT IN REVERSE WHEN THE FAILURE OCCURRED. AS A RESULT, THE CONTACT CRASHED INTO ANOTHER VEHICLE. A POLICE REPORT WAS N…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED THAT THE VEHICLE HAD AN UNEXPECTED ACCELERATION AS THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT WAS UNABLE TO STOP THE VEHICLE OR PLACE IT IN REVERSE WHEN THE FAILURE OCCURRED. AS A RESULT, THE CONTACT CRASHED INTO ANOTHER VEHICLE. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES REPORTED. ADDITIONALLY, THE CONTACT MENTIONED THAT THE VEHICLE FAILED TO ACCELERATE OUT OF FIRST GEAR. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 56,000.
NHTSA ODI #10690209
78,000 miles · Oct 15, 2014
Power Train
WHEN I START THE CAR.. EVERYTHING IS GOOD.. I START DRIVING AND ABOUT 15 MINUTES LATER .. THE CHECK ENGINE LIGHT COMES ON AND THE WRENCH LIGHT COMES ON... THEN WHEN I PRESS THE GAS... THE CAR BARELY CAN TAKE OFF.. I CAN BE AT 3RPMS AND BE BARELY MOVING ..I CAN PUT THE CAR IN PARK AND PRESS ON THE GAS AN THEIR WILL BE NO REV UP. …
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WHEN I START THE CAR.. EVERYTHING IS GOOD.. I START DRIVING AND ABOUT 15 MINUTES LATER .. THE CHECK ENGINE LIGHT COMES ON AND THE WRENCH LIGHT COMES ON... THEN WHEN I PRESS THE GAS... THE CAR BARELY CAN TAKE OFF.. I CAN BE AT 3RPMS AND BE BARELY MOVING ..I CAN PUT THE CAR IN PARK AND PRESS ON THE GAS AN THEIR WILL BE NO REV UP. WHEN I PUT IN REVERSE OR BACK IN DRIVE .. IT SHIFTS REAL HARD .. WHEN I TURN THE CAR OFF.. LET IT SIT FOR A WHILE.. U KNOW, COOL LIKE 10 MIN... THEN \ I START THE CAR UP ITS KIND OF BACK TO NORMAL FOR ABOUT 15 MINUTES... THEN THE WARNINGS LIGHTS COME BACK ... *TR
NHTSA ODI #10644724
89,000 miles · Jul 24, 2014
Power Train
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED LIMITED. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE ENGINE STARTED TO MAKE A LOUD GRINDING NOISE AND NO WARNING LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE JERKED IN A FORWARD MOTION. THE CONTACT APPLIED THE ACCELERATOR PEDAL AND THE VEHICLE RESUMED ITS NORMAL OP…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED LIMITED. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE ENGINE STARTED TO MAKE A LOUD GRINDING NOISE AND NO WARNING LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE JERKED IN A FORWARD MOTION. THE CONTACT APPLIED THE ACCELERATOR PEDAL AND THE VEHICLE RESUMED ITS NORMAL OPERATIONS. THE FAILURE OCCURRED ON TWO DIFFERENT OCCASIONS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE TECHNICIAN DIAGNOSED THAT THE CVT TRANSMISSION AND THAT THE DRIVE SHAFT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 89,000 AND THE CURRENT MILEAGE WAS 90,000. ## VIN PASSED ## 2006 FORD 500 LIMITED ##
NHTSA ODI #10616096
13,637 miles · Jul 14, 2014
Engine And Engine CoolingPower Train
SINCE 2009 MY FORD 500 HAS HAD ISSUES WITH NO A/C AND SURGING. THEY COULD NOT FIGURE OUT WHAT WAS GOING ON (FORD) AND EVENTUALLY FOUND IT TO SUPPOSEDLY BE THE THROTTLE BODY ASSEMBLY. AFTER THAT WAS "FIXED" THE CAR DID NOT SURGE BUT THE A/C WOULD NOT WORK WHEN THE CAR WAS IDLE IN WARM WEATHER. I'VE TAKEN THE CAR BACK AT LEAS…
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SINCE 2009 MY FORD 500 HAS HAD ISSUES WITH NO A/C AND SURGING. THEY COULD NOT FIGURE OUT WHAT WAS GOING ON (FORD) AND EVENTUALLY FOUND IT TO SUPPOSEDLY BE THE THROTTLE BODY ASSEMBLY. AFTER THAT WAS "FIXED" THE CAR DID NOT SURGE BUT THE A/C WOULD NOT WORK WHEN THE CAR WAS IDLE IN WARM WEATHER. I'VE TAKEN THE CAR BACK AT LEAST A DOZEN + TIMES WITH THIS ISSUE. NOW THE CAR IS BEGINNING TO SURGE AGAIN TOO... IT HAPPENED TWICE, NOT ALWAYS BUT IT HAPPENS... IT IS QUITE SCARY WHEN THERE IS A CAR IN FRONT OF ME AND I AM AT A TRAFFIC LIGHT OR SIGN AND THE CAR SURGES FORWARD - I HAVE CALLED FORD MOTOR CO NUMEROUS TIMES AND TAKEN IT TO MY FORD DEALER. *TR
NHTSA ODI #10610536
106,000 miles · Jul 13, 2014
Power Train
WHILE DRIVING CHECK ENGINE LIGHT AND WRENCH ILLUMINATE AND YOU CAN NO LONGER ACCELERATE. I MUST SAFELY PULL OVER TURN CAR OFF AND RESTART SOMETIMES HARD TO RESTART. WAS TOLD BY MECHANIC THROTTLE BODY NEEDS TO BE REPLACED OVER $600. IF SO MANY PEOPLE ARE HAVING THE SAME ISSUES THE PART SHOULD BE RECALLED. *TR
NHTSA ODI #10610205
70,000 miles · Jun 4, 2014
Power Train
TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED WHILE DRIVING THE SKID, SERVICE ENGINE, AND TRANSMISSION WARNING LIGHTS ILLUMINATED. THE CONTACT MENTIONED THAT THE VEHICLE SHIFTED INTO LIMP MODE. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAGNOSED THAT THE FAILURE WAS CAUSED BY THE TRANSMISSION DIFFERENTIAL. THE M…
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TL* THE CONTACT OWNS A 2006 FORD FIVE HUNDRED. THE CONTACT STATED WHILE DRIVING THE SKID, SERVICE ENGINE, AND TRANSMISSION WARNING LIGHTS ILLUMINATED. THE CONTACT MENTIONED THAT THE VEHICLE SHIFTED INTO LIMP MODE. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAGNOSED THAT THE FAILURE WAS CAUSED BY THE TRANSMISSION DIFFERENTIAL. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 70,000. THE CURRENT MILEAGE WAS 92,000.
NHTSA ODI #10596162
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