2006 Mercury Grand Marquis: sudden unintended acceleration

Filed Aug 24, 2015 · Acceleration · 58,300 miles · WI

Tl* the contact owns a 2006 mercury grand marquis. The contact stated that while driving at 10 MPH attempting to engage the brakes, the vehicle suddenly accelerated without warning. The failure recurred three times. The vehicle was taken to a dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 58,300.

Filed Apr 17, 2015 · Acceleration, Airbags · 38,000 miles · FL · crash · 1 injury

Tl* the contact owned a 2006 mercury grand marquis. While driving at an unknown speed with the cruise control activated, the vehicle suddenly accelerated. The rear brakes locked when the failure occurred. The contact was unable to stop the vehicle and crashed into a tree. The air bags failed to deploy. The front seat passenger was injured and received medical attention. The vehicle was destroyed. A police report was filed. The VIN was not available. The failure mileage was 38,000.

Filed Feb 10, 2015 · Acceleration · 215,000 miles · LA · crash

I had an incident of unintended acceleration on my mercury marquis. I was braking for a stop when the engine suddenly started racing. I put my foot on the brake hard but the car still continued to move slowly until I hit the car in front of me. There was no damage to either vehicle (fortunately) but the car's engine was completely out of control.

Filed Sep 22, 2014 · Acceleration, Engine · 102,000 miles · AL

Upon readying for stop the vehicle surged forward. I had to put in neutral and wait until the surge discontinued. This has been going on for several months. It has become a incident that happens more often. It is very scary. A had jump happens when I put it back in gear.

Filed Jun 17, 2014 · Brakes, Steering · 55,749 miles · MA

Tl* the contact owns a 2006 mercury grand marquis. The contact stated that the vehicle suddendly accelerated and brakes failed intermittently. Also, the contact mentioned that the power steering malfunctioned and as a result, the steering wheel became hard to maneuver whenever attempting to make a turn. The vehicle was taken to an authorized dealer who informed the contact that the vehicle was included in recall the federal safety agency campaign id number: 13v385000 (steering). The vehicle was repaired under the recall. In addition, the contact mentioned that the vehicle accelerated upon applying both feet to the brake pedal to no avail. The authorized dealer diagnosed and replaced the ball joints, lower control arm, front and back brakes, fuel filter and the stabilizer bar. The failure recurred intermittently with the brakes smoking upon the contact attempting to park the vehicle with both feet on the brakes. The vehicle was taken to an independent mechanic who diagnosed that the throttle assy needed to be replaced. The vehicle was repaired and the failure still recurred with the unintended acceleration and brake failure. The vehicle was to be inspected, diagnosed and repaired. The manufacturer was notified of the failure. The approximate failure mileage was 55,749.

Filed Nov 7, 2013 · Acceleration · 52,000 miles · FL · crash · 3 injuries

Stopped at railroad crossing. Train moving. 1 car ahead of me at railroad. Stop. I was completely stopped. After being stopped for about a minute my car suddenly accelerate and slammed into car in front of me pushing car forward in the side of moving train. My car also slammed into train and was reversed and stopped on railroad post. During this time I could not stop vehicle. The vehicle was traveling at considerable speed.

Filed Jul 26, 2013 · Acceleration · 22,538 miles · NJ

I was driving up to a light and slowing down. When at 25mph the car suddenly accelerated and I had to put all my weight on the brake to stop. After about 10 seconds the car went back to normal and ran fine. Since that incident my car has done that twice with the same result and I am worried someone will get hurt. I have been researching this online and have found other complaints. I will be taking the car to my mechanic asap.

Filed Apr 3, 2012 · Acceleration · 33,000 miles · NY · crash

Tl* the contact owns a 2006 mercury grand marquis. The contact was attempting a left turn when the vehicle suddenly accelerated and crashed into the side of a building. No one was injured. The vehicle was damaged at the hood and the grill. The police were contacted and an incident report was filed. The contact stated that the vehicle abnormally accelerated on another occasion which also resulted in a crash. As the contact shifted into drive, the vehicle lunged forward and the RPM's increased excessively. The vehicle crashed into a parked vehicle but no one was injured. A police report was also filed of the second incident. The contact stated that both of the incidents that LED to a crash occurred immediately after utilizing the cruise control function. The contact stated that he was planning to have the feature removed from the vehicle. The manufacturer was not notified of the failure. The failure mileage was 33,000 and the current mileage was 45,400.

Filed Mar 14, 2012 · Acceleration · 2,000 miles · IL

Tl* the contact owns a 2006 mercury grand marquis. The contact stated that while stopped at a stop light, there was an increase in the engine rpms. The contatc had to apply heavy pressure to the accelerator pedal to keep the vehicle stopped. The failure occurred intermittently and the vehicle also experience unintended acceleration. The vehicle was taken to the dealer, who inspected it and stated that there was no failure. The manufacturer was not notified. The failure mileage was 2,000 and the current mileage was 111,000. The VIN was unknown.

Filed May 9, 2011 · Acceleration · 28,000 miles · FL

Tl*the contact owns a 2006 mercury grand marquis. The contact stated the vehicle surged forward on three separate occasions while the brakes were engaged. During two of the failures the contact applied excessive pressure to the brake pedal to stop the vehicle. On one occasion the vehicle stopped accelerating on its own.the vehicle was taken to a repair shop but the mechanic was unable to diagnose the failure. The vehicle was not repaired. The manufacturer was made aware of the failure and the contact was advised to take the vehicle to an authorized dealer. The failure mileage was 28,000 and the current mileage was 32,800.

Filed Apr 13, 2010 · Acceleration · 30,351 miles · MO · crash

Tl*the contact owns a 2006 mercury grand marquis. While driving at approximately 30 MPH, the vehicle suddenly accelerated up to 50 MPH although the contact depressed the brake pedal. The vehicle would not slow down even after the contact turned off the ignition and continued to coast up the hill until it crashed into a curb. There were no injuries but a police report was taken. The vehicle was towed to a local repair shop where it was repaired. After the repair, the dealer performed a diagnostic test on the vehicle but no failure was found. The contact called the manufacturer and was told that they would get back with him for an investigation. The current and failure mileages were 30,351.

Filed Jun 16, 2009 · Acceleration · 27,000 miles · PA

Tl*the contact owns a 2006 mercury grand marquis. When applying pressure to the brake pedal and placing the vehicle into reverse, the gear lurches forward unexpectedly. The contact has to switch the vehicle into neutral to stop the unintended acceleration. He took the vehicle to the dealer, but they could not identify the cause of the failure. The failure mileage was 27,000 and current mileage was 29,000. Updated 07/17/09 *bf the consumer stated on 2 occasions, he started the vehicle; put it in drive and the motor raced and the vehicle lurches forward. He had to put the vehicle into neutral and turn off the ignition to stop the vehicle. The dealer was unable to duplicate the consumers concern. Updated 07/17/09.