2005 Mercury Grand Marquis Driver assistance Problems

This is a serious safety hazard that could result in death or injury. If I hadn’t escaped in time, I would have been killed. I am urging the NHTSA to investigate this defect and take immediate action to remove these vehicles from the road. Others may not be as lucky. This issue is life-threatening, especially because the fire started while the vehicle was in motion. These vehicles must be recalled and removed from use before more people are injured or killed.

NHTSA ID

11650045

Incident

Nov 5, 2024

On [XXX] I was driving this recently purchased Grand marquis . On [XXX] here in San Antonio around ten at night I hit the brakes and something under the hood compartment blew up and it cocked the car . I was trapped inside and when I finally was able to get my seatbelt released I had to break the window with my head . The previous week I reached out to ford and they told me they would address the issue and that they would call me back and that was to no avail. i reached out to ford and at first I was told I would be helped and then a man came on the phone yelling that my vehicle . I need help with resol this issue . My car is totaled and I’m hurting and it’s because of a car with recalls that are a fire haz and dangerous to be put on the road Thank you and God Bless . was not under any recalls The car had been parked for over ten years beca when the orig owner bought it it had issues with the cruise control and the brakes and the engine and the lights . I investigated about and hazards the car was demonstrating and upon further consideration my instinct told me this car was defected and was a big problem waiting to happen INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11624137

Incident

Nov 5, 2024

I was driving I pressed the cruise control to set it but the vehicle kept accelerating and as I was pressing on the brake it wouldn’t disengage it kept accelerating I kept pressing the brake frantically and THANK GOD it disengaged.. I never touched the cruise control again

NHTSA ID

11553988

Incident

Nov 2, 2023

NEITHER THE AIR CONDITIONER NOR THE CRUISE HAS WORKED SINCE 46,000 MILES. IT NEEDS A NEW AIR COMPRESSOR WHICH WOULD COST OVER $1,000 AND THERE ARE SEVERAL OTHER COMPLAINTS FOR THIS ISSUE PLASTERED ALL OVER THE INTERNET.

NHTSA ID

11413400

Incident

Apr 1, 2018

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. WHILE DRIVING 45 MPH, THE CONTACT ATTEMPTED TO BRAKE, BUT THE VEHICLE ACCELERATED. THE CONTACT SHIFTED THE TRANSMISSION INTO NEUTRAL AND THE VEHICLE STOPPED. THE ENGINE CONTINUED TO REV FOR AWHILE AND THEN THE RPMS SLOWED DOWN TO A NORMAL LEVEL. THE CONTACT STATED THAT THE SYMPTOMS DISAPPEARED ON THEIR OWN AND THE VEHICLE OPERATED WITHOUT ANY FAILURES SINCE. THE MANUFACTURER STATED THAT THERE WAS NO RECALL FOR THE FAILURE. THE FAILURE MILEAGE WAS 79,000. *BF *TR

NHTSA ID

11210796

Incident

May 9, 2019

Mileage

79,000 mi

THE VEHICLE WILL NOT DISENGAGE CRUISE WHEN APPLYING THE BRAKES AT 50 MPH ON THE HIGHWAY. IN FACT IT WILL CONTINUE TO ACCELERATE UNTIL I HIT THE BRAKES HARD. I HAVE RECENTLY DISCONNECTED THE SYSTEM, WHAT A SHAME. I AM THE 2ND OWNER. I PURCHASED THIS VEHICLE IN SEPT 2017 WITH ONLY 20,109 MILES.

NHTSA ID

11081486

Incident

Jan 8, 2018

Mileage

24,500 mi

THIS HAS BEEN A DANGEROUSLY RECURRING ENGINE ACCELERATING PROBLEM WHILE AT REST OR MOVING/COMING TO A STOP ON STREETS OR HIGHWAYS BUT ALWAYS WHILE ATTEMPTING TO BRAKE OR HOLD IN PLACE. THE BRAKES WON'T STOP IT, ONLY TURNING OFF THE IGNITION AND RESTARTING WORKS. BARELY AVOIDED SEVERAL ACCIDENTS, SO FAR. MY FORD DEALER HAS INSPECTED THE SYSTEMS AND MY FOOT PLACEMENTS WITH OUT FINDING A PROBLEM OR A SOLUTION. THERE ARE OVER 30 COMPLAINTS REGARDING THIS PROBLEM IN YOUR DATABASE, SOME WITH SERIOUS INJURIES. AFTER ALL THESE YEARS, HOW CAN THIS ISSUE BE ESCALATED BEFORE THERE IS A FATALITY? PLEASE RESPOND ASAP.

NHTSA ID

11072996

Incident

Feb 2, 2018

Mileage

35,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 5 MPH AND THEN DEPRESSING THE BRAKE PEDAL TO SLOW THE VEHICLE DOWN, THE VEHICLE ACCELERATED WITHOUT WARNING. TO AVOID CRASHING INTO THE PRECEDING VEHICLE, THE CONTACT WAS ABLE TO VEER TO THE RIGHT AND CONTINUE DRIVING. THERE WAS NO WARNING INDICATOR ILLUMINATED. THE FAILURE RECURRED THREE TIMES. THE VEHICLE WAS TAKEN TO PORTER FORD (600 OGLETOWN RD, NEWARK, DE 19711) WHERE IT WAS DIAGNOSED THAT THE THROTTLE BODY MOTOR ASSEMBLY WAS STICKING AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 39,000.

NHTSA ID

11065882

Incident

Jan 19, 2018

Mileage

39,000 mi

VEHICLE AT TIMES WITH MY FOOT ON THE BRAKE PEDAL,JUST STARTS TO ACCELERATE FOR NO REASON WHEN I STOP A LIGHT OR IN TRAFFIC.

NHTSA ID

11002062

Incident

Jun 21, 2017

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE STOPPED AT A TRAFFIC LIGHT, THE VEHICLE ACCELERATED INDEPENDENTLY. THE CONTACT STATED THAT IT BECAME DIFFICULT TO KEEP THE VEHICLE FROM MOVING FORWARD. THE CONTACT STATED THAT THE BRAKE PEDAL WAS DEPRESSED BUT FAILED TO STOP THE VEHICLE. THE CONTACT WAS ABLE TO SLOW THE VEHICLE BY PLACING THE SHIFT LEVER TO THE NEUTRAL POSITION. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED OR REPAIRED. THE CONTACT STATED THAT THE FAILURE WAS INTERMITTENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 146,784. UPDATED 01/05/17*LJ *TR

NHTSA ID

10923998

Incident

Sep 20, 2016

Mileage

146,784 mi

UNINTENDED ACCEL. SOMETIMES WHEN I STEP ON THE BRAKE THE CAR ACCELERATES INSTEAD. AT FIRST I THOUGHT IT WAS ME AND MY BIG FEET. AFTER SOME INTERNET RESEARCH I FIND IT MAY BE COMMON AS THE 2005 GETS OLDER. I ASKED IF BRKE PEDAL COULD BE ADJUSTED SO THAT THERE WAS NO INTERFERENCE WITH THE GAS PEDAL, I WAS TOLD NO. I HAD THE MASTER CYLINDER REPLACED, MINIMUM IMPROVEMENT. ONE DAY I "SHOT" ACROSS US19 IN ROSS TOWNSHIP WHEN I BRAKED. INSTEAD OF STOPPING AT A RED LIGHT, I KEPT GOING UNTIL I CLEARED TRAFFIC IN BOTH DIRECTIONS RUINING 2 WHEELS & TIRES - SUBSEQUENTLY REPAIRED. THE CAR NOW SITS IN OUR DRIVEWAY, AFTER SOME OTHER OCCURRENCES WITHOUT INCIDENT. I'M LEARY OF DRIVING IT & DON'T WANT TO SELL IT & GET SOMEONE INJURED OR KILLED. FORTUNATELY I HAVE A 2004 SABLE WHICH I DRIVE DAILY WITH NO SUCH PROBLEMS! IDEAS?

NHTSA ID

10873848

Incident

May 13, 2015

Mileage

87,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE FAILED TO ACCELERATE OVER 60 MPH. WHEN THE VEHICLE WAS ABLE TO REACH SPEEDS MORE THAN 60 MPH, THE TRACTION CONTROL WARNING LIGHT ILLUMINATED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE FAILURE WAS UNDETERMINED. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT PROVIDED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 144,000.

NHTSA ID

10807466

Incident

Nov 9, 2015

Mileage

144,000 mi

MY HEADLIGHTS WILL NOT COME ON AT TIMES OR JUST COME ON FOR A COUPLE OF MINUTES AND THEN THEY GONE. I HAVE GOTTEN SO MANY TICKETS FOR DRIVING WITH MY HIGH BEAMS AND IT'S SEEM LIKE THE MANUFACTURER DON'T CARE AT ALL. *TR

NHTSA ID

10682383

Incident

Feb 12, 2014

STARTED VEHICLE TO MOVE IT IN MY DRIVEWAY. PUT IT IN DRIVE AND THROTTLE STUCK OPEN AND VEHICLE SLAMMED MY GARAGE CORNER. TRIED PUTTING IT IN PARK AND IT WENT INTO REVERSE (BRAKE OVERRIDE DID NOT WORK) INSTEAD AND CROSSED STREET, WENT ACROSS NEIGHBORS LANDSCAPING STONES AND SLAMMED INTO THE HOUSE NEXT DOOR'S FRONT PORCH AT WHICH TIME THE IGNITION SHUT DOWN AND THE CAR CAME TO A STOP. MANY THOUSANDS OF DOLLARS IN DAMAGES TO ALL THREE HOMES. *JS

NHTSA ID

10669300

Incident

Dec 29, 2014

Mileage

40,000 mi

SUDDEN ACCELERATION. THE CAR DID THIS AFTER STARTING IT IN THE DRIVEWAY. UPON PLACING THE CAR IN DRIVE THE CAR ACCELERATED BURNING RUBBER IN THE DRIVEWAY. HAD TO STAND ON BRAKES AND TURN IGNITION OFF TO STOP CAR. THE SECOND INCIDENCE HAPPENED WHILE BRAKING FOR A RED LIGHT, I HAD TO SHIFT CAR INTO NEUTRAL TO STOP CAR. UNSURE OF MILEAGE IN THIS INSTANCE. MOST RECENTLY WHILE IN SOUTH CAROLINA I WAS SITTING AT A RED LIGHT WITH MY FOOT ON THE BRAKE THE CAR SUDDENLY ACCELERATED AND I HAD TO SHIFT TO NEUTRAL TO AVOID REAR ENDING CAR IN FRONT OF ME. (MILEAGE 60,000). *TR

NHTSA ID

10596454

Incident

May 7, 2007

Mileage

12,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE LIGHTS INTERMITTENTLY TURNED ON AND OFF. THE CONTACT TOOK HIS VEHICLE TO AN INDEPENDENT MECHANIC WHERE THEY REPLACED THE LCM LIGHT CONTROL MODULE. THE MANUFACTURE WAS NOTIFIED AND STATED THAT THERE WAS NO RECALL FOR THE MAKE AND MODEL. THE CONTACT ALSO STATED WHILE DRIVING THE CRUISE CONTROL SUDDENLY MALFUNCTIONED SPONTANEOUSLY. THE CONTACT AGAIN TOOK TO VEHICLE TO A FORD DEALER WERE THEY STATED THERE WAS NOTHING WRONG WITH THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURE AGAIN STATED NO THERE WERE NO RELATED RECALLS FOR HIS YEAR, MAKE AND MODEL VEHICLE. THE APPROXIMATE FAILURE MILEAGE WAS 15,000 MILES.

NHTSA ID

10561640

Incident

Apr 15, 2013

Mileage

15,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE EXHIBITED SUDDEN ACCELERATION AND THE ENGINE RPMS WOULD IDLE ABNORMALLY VERY HIGH SECONDS PRIOR TO THE FAILURE OCCURRING. THE CONTACT WAS ABLE TO STOP THE VEHICLE BY SHIFTING INTO NEUTRAL. THE CONTACT TOOK THE VEHICLE TO THE DEALER HOWEVER, THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE. THE DEALER THEN RECOMMENDED HAVING THE THROTTLE BODY REPLACED BUT COULD NOT GUARANTEE THAT THE REPAIR WOULD REMEDY THE FAILURE. THE FAILURE MILEAGE WAS 25,000.

NHTSA ID

10497996

Incident

Feb 10, 2013

Mileage

25,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE SUDDENLY ACCELERATED WHENEVER THE CONTACT WAS BRAKING TO A STOP. THE FAILURE RECURRED SEVERAL TIMES. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS 46,000.

NHTSA ID

10469697

Incident

Oct 7, 2010

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE DRIVER OF THE VEHICLE WAS TRAVELING 10 MPH WHEN THE VEHICLE ACCELERATED UP TO 50 MPH AND THE DRIVER CRASHED INTO SEVERAL TREES. THE VEHICLE WAS NOT DESTROYED AND THERE WERE NO INJURIES. THE VEHICLE WAS TOWED TO A REPAIR SHOP BUT THE CAUSE OF THE FAILURE WAS UNKNOWN. THE MANUFACTURER WAS NOT NOTIFIED OF THE INCIDENT. THE FAILURE MILEAGE WAS UNKNOWN. THE VIN WAS UNAVAILABLE.

NHTSA ID

10464413

Incident

Jul 5, 2012

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE PARKING, HE ATTEMPTED TO APPLY THE BRAKES BUT DEPRESSED THE ACCELERATOR PEDAL INSTEAD. THE CONTACT CRASHED AGAINST ANOTHER VEHICLE AS A RESULT. THERE WAS NO DAMAGE. THE CONTACT STATED THAT THE FAILURE WAS DUE TO HOW CLOSE THE PEDALS WERE POSITIONED TO ONE ANOTHER. THE VEHICLE WAS TAKEN TO DEALER, WHO OFFERED NO ASSISTANCE. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN WAS NOT AVAILABLE. THE FAILURE AND CURRENT MILEAGES WERE 18,000.

NHTSA ID

10462289

Incident

Jun 16, 2012

Mileage

18,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE BRAKE AND ACCELERATOR PEDALS WERE POSITIONED VERY CLOSE TO ONE ANOTHER. AS A RESULT, THE CONTACT EXPERIENCED A FAILURE IN WHICH HE DEPRESSED BOTH PEDALS SIMULTANEOUSLY. THE FAILURE WAS EXPERIENCED SEVERAL TIMES. THE VEHICLE WAS NOT TAKEN TO A DEALER TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED NO ASSISTANCE. UPDATED 09/06/2012 *JS

NHTSA ID

10458328

Incident

May 1, 2009

Mileage

25,000 mi

UPON STARTING UP 2005 MERCURY MARQUIS (~24000 MILES) AND PLACING CAR INTO DRIVE, CAR ACCELERATED AT A HIGH RATE OF SPEED AND CRASHED INTO A GAS STATION PUMP. THE CAR ACCELERATOR MALFUNCTIONED AND WAS IN A "JAMMED STATE". THE DRIVER IMMEDIATELY PUT RIGHT FOOT THEN BOTH FEET ON BRAKE TRYING TO GET THE VEHICLE TO STOP. THE CAR WOULD NOT SLOW MUCH LESS STOP. DRIVER SUFFERED VERY SERIOUS EYE INJURY AND CURRENTLY HAS NO SIGHT IN INJURED LEFT EYE. THERE IS THE RISK OF LOSING LEFT EYE. PASSENGER SUFFERED FRACTURED STERNUM AND OTHER BRUISING. BOTH DRIVER AND PASSENGER ARE TRAUMATIZED FROM THIS CAR ACCELERATOR MALFUNCTION. *TR

NHTSA ID

10445094

Incident

Jan 9, 2012

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT ANY SPEED AND ATTEMPTING TO BRAKE, THE VEHICLE SUDDENLY ACCELERATED. THE FAILURE WAS EXPERIENCED NUMEROUS TIMES. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES FOR THE FAILURE WHERE THE DEALER TEST DROVE THE VEHICLE, BUT WAS UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE WAS THEN TAKEN TO A LOCAL MECHANIC FOR FURTHER INSPECTION. THE CONTACT ALSO EXPERIENCED FAILURES WITH THE HEADLIGHTS. THE HEADLIGHTS WERE REPLACED BUT THE ABNORMAL ACCELERATION FAILURE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 150 AND THE CURRENT MILEAGE WAS 15,600.

NHTSA ID

10433483

Incident

Oct 1, 2005

Mileage

150 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. WHILE DRIVING AT APPROXIMATELY 10 MPH AND DEPRESSING THE BRAKES, THE VEHICLE SUDDENLY ACCELERATED UNTIL THE BRAKE PEDAL WAS RELEASED. ALSO, WHILE PARKED, THE CONTACT DEPRESSED THE BRAKES AND THE VEHICLE LUNGED FORWARD. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTICS OR REPAIRS. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 5,000.

NHTSA ID

10418154

Incident

Sep 15, 2005

Mileage

5,000 mi

TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. WHILE DRIVING APPROXIMATELY 44 MPH, THE CONTACT APPLIED THE BRAKES AND THERE WAS AN ABNORMAL INCREASE IN ENGINE RPMS AND THE ENGINE ROARED LOUDLY. THE VEHICLE ATTEMPTED TO ACCELERATE BUT THE CONTACT APPLIED THE BRAKES ABRUPTLY. THE VEHICLE THEN GRADUALLY BEGAN TO DECELERATE TO APPROXIMATELY 30 MPH. HE THEN DISENGAGED THE OVERDRIVE FEATURE AND ONCE THE VEHICLE REACHED A SPEED OF 30 MPH, THE VEHICLE OPERATED AS NORMAL. THE VEHICLE WAS NOT TAKEN TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 8,770.

NHTSA ID

10384523

Incident

Feb 24, 2011

Mileage

8,770 mi