While driving vehicle brakes all of sudden go to the floor, no pedal response. This has happened a couple of times without warning. Once when I was approaching an intersection and light changed. My brakes all of the sudden went to the floor and I had to downshift and cut my wheels toward the curb to stop from crashing. Then a couple days later attempting to get it to mechanic it was fine and pumped properly. I wrote it off as a fluke. Then a few months later it happened again. My mechanic can't seem to find the issue and has charged me for new brakes, new master cylinder, new brake line, and another part for the abs power assistant. My car still continues to have this brake malfunction on and off. Somebody is going to end up getting hurt. This obviously is some kind of part defect. Please help!
Mercury Mariner abs comes on
31 of the 1,296 owner complaints about the Mercury Mariner describe aBS light or ABS activating, most of them for the 2008 model year.
- owner complaints
- 31
- worst model year
- 2008
- typical repair cost reported
- $4,000
- typical mileage
- 135,000
By model year
Often reported together
Brake failure 5Steering noise 1Power steering loss 1Loss of power 1Engine failure 1
What owners say
Driving downhill after dropping my children off at school heard a loud popping noise and brake pedal fell to the floor. Total loss of brakes. Coasted to the side off the road narrowly avoiding busy intersection. Vehicle was looked at by mechanic, traced to faulty ABS Sensor. Serious safety hazard— Recall must be issued immediately to prevent accidents and injuries!
Brake pedal went to floor on my 10 Mariner, slid into intersection, no warning lights came on, checked for any fluid leaks and there were none. This is 2nd time it has happened and is extremely dangerous! Believe, like others that it is the ABS control. Ford should fix this immediately!
The contact owns a 2008 Mercury Mariner. The contact stated while driving 65 MPH, he heard abnormal sounds coming from the front of the vehicle. The contact stated he lost control of the steering wheel and the vehicle was shuddering. The ABS warning light illuminated. The contact veered to the side of the road. The contact stated as he drove, the vehicle continued to shudder. The vehicle was taken to the independent mechanic who diagnosed the failure as a loss of the steering torque sensor signal. The contact stated that the vehicle was not repaired, and the failure had been reoccurring while driving at various speeds. The dealer and the manufacturer were notified of the failure and informed the contact that the vehicle could not be repaired under the federal safety agency Campaign Number: 14V284000 (Steering) because the VIN was not included in the recall. The vehicle was not repaired. The approximate failure mileage was 155,000.
Driving, coming to a stoplight, the brakes suddenly failed, the brake pedal went all the way to the floor. Pumping I was able to get just enough brakes to stop before colliding with the car in front of us. The service ABS and emergency brake service warning lights came on after the near collision. I took the car to a ford dealership and was told the hcu unit had failed. This is a $4,000 part that we had already replaced at 76,000 miles,. The new part failed again without warning only 22,000 miles later.
The ABS hydrolic control unit has malfunctioned resulting in faulty brakes and dangerous driving conditions. I have to put the brake pedal to the ground to get any type of braking to be done. This takes extra seconds that could result in an accident if I had to suddenly brake. This seems to be a common problem and many mariners and escapes have identical problems. I would like my VIN to be added to the recall list to have this problem fixed.
The brake pedal goes straight to the floor leaves you with no brakes. This is due to the ABS hydraulic control module failing same as other ones in ford and mercury's being recalled. This is terrible and dangerous and they refuse to help even though thousands of customers with mariners and escapes are having identical problems. Does multiple people have to die before they recall these? This happened while on the highway at 65mph. Terrible and dangerous.
Re:the federal safety agency identifier 19v904 ford internal reference number:19s54 although mercury mariners are not listed in this recall, my 2008 mercury mariner has the exact same issue, sticking ABS valve. Ford will not recognize my vehicle as part of this recall. I have had 2 different certified mechanics work on the vehicle and both mechanics have installed new brake boosters, brake pads and master cylinders. The results from their work did not resolve the issue of soft brakes. The problem began when I made an abrupt stop while driving on a city street. The brakes were never fully functional after that. I believe the situation with my mariner is identical to the issue identified in the federal safety agency identifier 19v904. I also believe that mercury mariners should be included in this ford recall.
When using the brakes there's a loss of about half of the brake pedal, and most likely the ABS system. The part retails for $1,747.32. The problem from talking to mechanics and searching is apparently sticking valve(s) which in turn makes the brake fluid by-pass half of the system. In other words you only have the use of part of the brake system. Our car has 170k miles but that's ~ 90% highway miles, we bought it ~6yrs ago with 15k miles, which means the brakes don't get that much use. The rear shoes were just replaced for the 1st time @ 170k and the front pads have been done once. Ford cares so much about the lives of people driving their cars that they continue to sell the same part (modulator valve - ford (9l8z-2c346-c)) without any engineering changes/updates, even though this is a common problem across car lines and even trucks. They have issued a recall, #19s54 for select 2006-10 ford fusion, mercury milan and lincoln mkz vehicles that exhibit the same issue, "a normally closed valve inside the hydraulic control unit may stick open, which could result in extended brake pedal travel, potentially increasing the risk of a crash.". An interesting point in the recall is this: "the system will be pressure-flushed with dot 4 brake fluid and the dot 3 reservoir cap will be replaced with a new dot 4 cap." our vehicle has a dot3 cap, is dot3 what causes the problem with "stuck or slow-responding valves" per recall, and dot4 keeps valves from sticking or becoming slow acting because of the viscosity difference between the 2? From amsoil "dot 3 is the most common type used in cars and trucks today. Dot 4, however, is gaining popularity due to widespread use of anti-lock braking systems and traction control, which benefit from dot 4 fluid?s lower viscosity." this: "as of 2006, most cars produced in the u.s. Use dot 4 brake fluid." except for ford apparently.
Abs light ,regen brakes disabled and check brake system message comes on at anytime while driving. Lose braking power, causing driver to push brake very hard to stop and brake pedal sometimes goes to the floor. When car stops sometimes it won't restart for days. It has a new battery. Coolant code comes on also and the car isn't running hot. This is a dangerous problem and needs a recall. Other than that the car runs great.
Related recalls
No recalls on record for this model year.
Questions about the Mercury Mariner abs
Why does the abs come on in the Mercury Mariner?
Owners who report it most often also describe brake failure, multiple warning lights and clunking or noise when steering.
Which Mercury Mariner years have aBS light or ABS activating problems?
The model years with the most reports are 2008 (17 complaints), 2009 (5 complaints) and 2006 (4 complaints).
How much does it cost to fix ABS light or ABS activating on the Mercury Mariner?
Owners who mentioned a price put the repair at about $4,000 (median of 7 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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