459 of the
4,953 complaints filed about the Mercury Grand Marquis
are about the throttle and cruise control —
9% of everything owners reported.
The worst model year for it is 2005.
459
Complaints
9%
Share of all complaints
129
Crashes
42
Fires
Acceleration & Cruise Control complaints by model year
The contact owns a 2002 Mercury Grand Marquis. The contact stated while driving 50 MPH at night, the cruise control mode malfunctioned, and the speed of the vehicle increased independently. The contact stated that the brake pedal was depressed several times to the floor, but the vehicle failed to stop. The contact turned off the vehicle, and the vehicle came to a stop. The vehicle was towed to the contact's residence. The contact stated that he was afraid of driving the vehicle again. The contact unregistered the vehicle and turned the license plates of the vehicle to the Department of Motor Vehicles. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. Additionally, the contact stated that the check engine and the low oil pressure warning lights had illuminated two days prior to the failure. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 58,000.
NHTSA complaint #11674238 — an unverified report by a vehicle owner.
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 complaint #11650045 — an unverified report by a vehicle owner.
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 complaint #11624137 — an unverified report by a vehicle owner.
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 complaint #11553988 — an unverified report by a vehicle owner.
I started Mercury with foot on break like normal. Shifted into reverse. Car accelerated backwards at full speed. Brakes did not stop car. Attempted to shift into neutral but went into drive instead. Car accelerated forward at full speed with my foot still on break. Car hit metal post and tree knocking them down and dragging the tree 50 to 60 feet before stopping with my foot still on the break. Car had stopped accelerating. I turned off the ignition. This unintended acceleration had happened before. Two different dealers attempted to fix the problem. Both of them thought they had been successful but it happened again. Previously, applying the brakes stopped the car, but not this time. Someone could have been injured severely or killed.
NHTSA complaint #11502872 — an unverified report by a vehicle owner.
While driving, I came to a stop light and suddenly, the car idled high and lurched forward while my foot was on the brake, luckily, I was stopped well away from the vehicle in front of me. The car idled high and seemed to have a mind of it's own. I took the back roads home and backed into our garage. The car smelled hot, and I though I had smoked my brakes, trying to keep control of it. Later that night, I told my husband about the car's actions and he did not believe me, though my daughter who was with me at the time confirmed that the car had indeed accelerated on it's own. My husband started the car and it did idle high and get hot once again, although only parked with no one in it. He thought he knew what the problem was and we turned off the car and closed the hood and went inside to order the part. A few minutes later, we heard a couple popping noises and I opened the door that led into the garage from the basement. Smoke was coming into the house and my husband said that a flame shot over my head. The car had caught on fire under the closed hood. We called the fire department, but by the time they arrived, a good portion of the basement was on fire. The house was a total loss. My husband though that the pvc elbow under the hood was sticking closed, so that is the part we were going to order. Unsure, if that was the real cause or not. The car did not have any warning lights or any other indications of a problem before this incident.
NHTSA complaint #11482417 — an unverified report by a vehicle owner.
?yrs.ago While backing out of parking space at Calaveras Lumber, after shifting into reverse, & removing my foot from the brake; the engine appeared to receive a huge burst of fuel which shot me backward like a rocket slamming my vehicle into and wedging it under the frame of a pickup truck parked in the same lot. I am glad I was parked and had my foot on the brake prior to this unit or system malfunction otherwise the injuries could easily have been fatal on the highway. I think this defect may be a contributing factor to the car dying recently while on my way to a Wedding Reception in Roseville, which left me stranded after dark for 41/2hrs and 71/2hrs. 2days later. I have not been able to start vehicle since and mechanics unable to diagnose why the engine is fuel starved when system parts tested appear to be in good working order. Something seems to be shutting off power or preventing power to the fuel pump and it is not the inertia switch, relays, fuses etc.. Components have been previously inspected by numerous others including dealer. No Recognizable Alert/Warning Prior to Incidents!
NHTSA complaint #11474583 — an unverified report by a vehicle owner.
Driving on the NYS Thruway with Cruise Control on and it dropped out. I tried to reengage several times and it would not engage. On the way home I tried it again it kicked on and kicked off right away and since this incident I've had no cruise control. I researched recalls and see there are 3 1999 Recall 99V124000, Electrical System. 2007 Recall07V336000 Vehicle Speed Control. 2008 Recall 08V051000 Speed Control Recall. I spoke with Ford and they suggested I spoke with the Ford they said to contact NHTSA. My car has less than 60,000 miles and has been well maintained so this is concerning me. The car is from Florida. Checked the fuse they are fine.
NHTSA complaint #11472017 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. THE CONTACT STATED WHILE DRIVING 70 MPH, THE ACCELERATOR PEDAL FAILED TO RETURN TO THE ORIGINAL POSITION AFTER BEING DEPRESSED. THE CONTACT HAD TO LIFT THE ACCELERATOR PEDAL WITH HIS FOOT IN ORDER TO GET THE VEHICLE TO SLOW DOWN. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC FOR DIAGNOSIS OR REPAIRS. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 50,000. THE VIN WAS UNAVAILABLE.*DT
NHTSA complaint #11400015 — an unverified report by a vehicle owner.
I WAS DRIVING IN TOWN AND SEVERAL TIMES WHEN I SLOWED DOWN TO STOP AT A STOP SIGN OR CORNER, AFTER BRAKING MY CAR ACCELERATED BY ITSELF. THE ENGINE REVVED UP AND MADE THE CAR JUMP FORWARD. I HAD TO SLIGHTLY RELEASE THE BRAKE SND BRAKE HARDER TO STOP AND AVOID GOING INTO THE INTERSECTION.
NHTSA complaint #11399994 — an unverified report by a vehicle owner.
AS I WAS DRIVING. 35MPH MY FRONT WHEEL ON THE DRIVER SIDE HAD SNAPPED OFF CAUSING MY VEHICLE TO CRASH INTO A PARKED VEHICLE. LONG STORY SHORT. I'M GOING THRU A FINANCIAL CRISIS. MY CAR WAS TOWED BY AAA TO MY HOUSE. I NOTIFIED MY INSURANCE COMPANY. WHY DID THE POLICE TOW MY CAR AWAY FROM MY HOUSE? SOMEBODY NEEDS TO TAKE CARE OF THIS BECAUSE I CAN'T. TRANSPORTATION IS ESSENTIAL TO ME. PLEASE I NEED HELP.
NHTSA complaint #11328957 — an unverified report by a vehicle owner.
THE VEHICLE ACCELERATED ON IT'S OWN WHILE STOPPED WITH THE BRAKE DEPRESSED. ONCE IN A PARKING LOT WAITING FOR A SPOT TO CLEAR.THE SECOND TIME WHILE SITTING AT A RED LIGHT. I HELD THE BRAKE DOWN AS HARD AS I COULD WHILE THE CAR DID A BURN OUT AND I NOTICED THE TRACTION LIGHT COME ON. IT THEN JUST WENT BACK TO NORMAL. THIS IS VERY DANGEROUS. SOMEONE IN FRONT OF THE CAR (ANOTHER DRIVER OR PEDESTRIAN) CAN SERIOUSLY GET HURT OR KILLED.
NHTSA complaint #11316773 — an unverified report by a vehicle owner.
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
NHTSA complaint #11210796 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2000 MERCURY GRAND MARQUIS. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE HESITATED TO ACCELERATE. THE FAILURE OCCURRED MOST FREQUENTLY WHEN TRAVELING UP HILL. THE FAILURE WAS INTERMITTENT AND THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE DEALER WAS NOT NOTIFIED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CONTACT SPRAYED CARBURETOR FLUID ON THE INTAKE MANIFOLD AND NOTICED A CRACK. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 118,000.
NHTSA complaint #11210300 — an unverified report by a vehicle owner.
THE CAR WILL SUDDENLY AND WITHOUT WARNING ACCELERATE TO 5000 RPM'S. HAD THROTTLE BODY AND MAS REPLACED WHICH SEEMED TO HELP. HOWEVER, IT STILL HAPPENS ONCE IN A WHILE (ONCE EVERY 3 WEEKS AVERAGE). USUALLY HAPPENS AFTER SHIFTING FROM PARK TO DRIVE AND DRIVING FORWARD AT LOW SPEEDS (AROUND 5-10 MPH). HASN'T HAPPENED AT HIGHER SPEEDS. WAS TOLD BY ONE MECHANIC THAT THE COMPUTER IS DEFECTIVE???.
NHTSA complaint #11206980 — an unverified report by a vehicle owner.
THE VEHICLE ACCELERATION BY IT SELF AND COULD NOT STOP IT. PROPELLED THRU THE. BRAKES AND WOULD NOT STOP. WE ARE TAKING CAR TO FORD DEALER. THE CAR ENGINE WAS STOPPED AND RESTARTED RUN OK. NOT SURE IF A RECALL ABOUT THIS YR. WITH THIS PROBLEM?
NHTSA complaint #11124153 — an unverified report by a vehicle owner.
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 complaint #11081486 — an unverified report by a vehicle owner.
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 complaint #11072996 — an unverified report by a vehicle owner.
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 complaint #11065882 — an unverified report by a vehicle owner.