Mercury Mountaineer brake failure problems

Filed Apr 13, 2017 · Brakes, Transmission · 200,000 miles · NY

Tl* the contact owns a 2003 mercury mountaineer. While driving, the transmission failed to shift. While parked, the emergency brakes failed and caused the vehicle to roll away. The contact was able to gain control of the vehicle. In addition, the brake warning indicator illuminated. The vehicle was towed to the dealer where it was diagnosed that the brake lines and hoses needed to be replaced. The vehicle was repaired, but the issue recurred. The manufacturer was made aware of the failure. The failure mileage was 200,000.

Filed Aug 3, 2014 · Brakes, Steering · TN · crash

Had a wreck coming down the mountain. Emergency brake didn't work ran into a tree and damaged a mailbox (related vehicle information: model year=1998, make=mountaineer , model=mercury ).

Filed Jul 28, 2009 · Brakes · 100,000 miles · VA

Recently, the pcv valve in my 2002 mercury mountaineer had a leak (vacuum system leak). As the vehicle began to stall as a result of this leak, while traveling 55 MPH, and decelerating towards a traffic light, I lost all function of my brakes. When I stepped hard on the brakes, there was no response. However, because I equated this to possibly being tied to the pcv valve, I stepped on the accelerator to increase airflow into the engine so that I would have brake function. This gave me brake function, temporarily. However, this move was very risky, as I was approaching cars in front of me and accelerating towards them instead of decelerating, just so I could slam on the brakes and have functioning brakes. There is an apparent link between the brakes and the vacuum system...which poses a deadly situation. Had I not been aware of vacuum system issues and how to mitigate them, I would have plowed into the stopped vehicle in front of me with no brakes. This occurred in the evening. I had to use this method to complete the remainder of my trip to get home, accelerating every time I needed to use brakes, because the stalling vehicle every time had no brake function. This condition put me in a very bad situation, as I also had my 5 year old in the car with me. This system should be recalled as it is unsafe. Replacing the pcv valve corrected the problem. There is also no notice in the operating manual for this vehicle about this vacuum system problem, especially since the operating manual that came with this car is for a prototype software system, and doesn't even match my vehicle. I have complained to mercury/ford about this incorrect manual, but they did not offer to send me a new one, and simply took the information and didn't even respond to my concerns.

Filed Dec 16, 2008 · Brakes, Electrical · 17,000 miles · FL

While coming up to a red light, the vehicle started making a clunking noise and the brake pedal went to the floor when I tried to stop for the red light. I also lost power steering. Luckily, I finally got the SUV to stop after I pumped the brakes and I was able to avoid hitting the car in front of me. I was close to my home so I slowly drove to my house using the emergency brake to stop if necessary. I contacted mercury who towed the SUV to their shop the next day on the 15th of december. They have had the vehicle all day on the 15th and 16th and told me that I could pick it up on the 17th. They couldn't, however. Find anything wrong with the vehicle and said the computers say everything is fine. They claim there is nothing wrong and are giving me the vehicle back.

Filed Sep 23, 2008 · Brakes · 14 miles · NY

When making a sudden stop, the brake pedal goes to the floor while maintaining pressure on the brake pedal. When holding vehicle on a steep incline (stopped), the pedal goes to the floor. Had it back to ford dealers and was told this is a normal condition for explorers and mountaineers even though service managers and the mechanics have told me there was a problem when they initially checked the brakes. I have started the paperwork for the nys lemon law procedure. I have put the first complaint of this in the approx. Accident date box. This happens whenever you use the vehicle.

Filed Jan 25, 2008 · Acceleration · 52,640 miles · WA

Driver sets cruise control at 35mph vehicle speed is at 35mph for about 90 secs. Suddenly vehicle's warning lights come on. (service engine soon. Battery alert. Low oil pressure alert , and temp. Alert ) vehicle loses all power. No brakes, steering locks up, no power. Driver (by the grace of god) brings vehicle to side of road right before a t in the road. Vehicles at the intersection can be traveling at 45mph. There was a school bus approaching as well. Driver turned on hazard lights. Driver phones husband. He had our 15 year old son (who was with me) check belts. They were intact. He then asked me if I had used the cruise control. I then remembered that this had happened to my husband several times when we had first bought the vehicle. Since then he has not set the cruise control for less than 40mph. Obviously I had forgotten that. I got back into the vehicle and turned on the engine and all was well. This morning, I called the ford dealership where we had purchased the vehicle. The service manager recalled that they had serviced a ford explorer one other time with the same problem. He said that there was not any record of a manufacturer recall. I told him that I wanted to make a report, as I knew that the situation yesterday could have resulted in a serious accident if I had lost power any closer to that intersection. He told me to make a report here. (by the way, I do not know what oem means concerning the component I listed. I even tried to look it up in tmy owners' manual and on the help portion of your website. I just left it marked "no." ).

Filed May 14, 2007 · Brakes · 5 miles · FL

Tl*the contact owns a 2004 mercury mountaineer. While driving in reverse and shifting gears, the vehicle hesitated. The cruise control engaged without warning and the vehicle stalled while driving 75mph. The service manager drove with the contact and observed the failure; however, he stated that the vehicle was operating normally. The accelerator also does not engage properly when increasing speed. The dealer stated that the electrical brain failed and attempted to repair it on two occasions. An expert from out of state also inspected the vehicle; however, they were unable to diagnose the failure. While approaching a stop sign, the brakes failed and almost caused a crash. The dealer stated that the master cylinder failed. The failure mileage was 5 and the current mileage was 52,000.

Filed Oct 3, 2005 · Brakes · 18,859 miles · PR · crash · 1 injury

When braking brakes failed, causing the vehicle to go into an embankment. Vehicle was towed. Dealership was notified, but did not resolve the problem. *ak

Filed Mar 25, 2004 · Airbags, Seat belts · NJ · crash · 1 injury

While driving 30 MPH,the driver applied the brakes, the pedal went to the floor and hit a patch of ice. The driver lost control of the vehicle hit an embankment then hit a tree. The driver side seat belt became unlaced during the collision. The air bags did not deploy. The driver sustained neck injuries and was transported by ambulance. Please fill in additional information.

Filed Dec 5, 2003 · Brakes, Transmission · 70,000 miles · NJ

Brakes failed seven times within 70,000 miles. An independent mechanic determined that the gem control module was the problem. When the gem control module malfunctioned, the brakes failed, and the 4-wheel drive didn't operate. Also, windshield wipers operated intermittently.