Abs warning light comes on and check brake system message comes on at anytime while driving on sitting still. Lose braking power, causing driver to push brake very hard to stop and brake pedal sometimes goes to the floor and you have to use emergency brake to stop. Dealer couldn't look at the car for three weeks said its okay to drive in "manual mode", however manual mode only uses rear brakes and will take vehicle a long distance to stop in rainy conditions.(I went through a busy intersection in the rain and almost had an accident so left it at the dealer). Dealer had vehicle for almost six weeks, replaced the ABS huc twice, finally called ford. Ford advised to replace all brake hoses "due to restrictions". Dealers are telling owners they have to replace ABS hcu and part alone cost $4700.00. However, ford knows of the problem and is not putting out a bulletin or recall, until someone gets killed. Owners are trading the unsafe car because the dealer is misdiagnosing the real problem which cost approximately $300.00
2008 Mercury Mariner Hybrid brakes complaints
Page 2 of 2: complaints 11 to 34 of 34, newest first, as owners wrote them.
The contact owns a 2008 mercury mariner hybrid. While driving 35 MPH, the brake pedal was depressed, but failed to stop the vehicle. The contact pressed brake padel to floor while avoiding collision with other card. Then placed the vehicle into park to stop the vehicle. The vehicle was towed to a dealer where it was diagnosed that the ABS control module failed and needed to be replaced. The manufacturer stated that the ABS module control the hydraulic system that control braking. Informed to notify the federal safety agency of the extreme unsafe braking condition when ABS module fails. The failure mileage was approximately 134,129. Ford motor company charge $4,000 for the ABS module control. They are gouging the american consumer with excessive pricing who wants to drive safely.
After pressing the brake peddle, the ABS light and red brake light come on and the regenerative braking and power brakes fail. It seems to happen only when the outdoor temperature is over 90 degrees. Once it happens, braking requires a hard push of the brake peddle to the floor and stopping takes longer. It is indeed dangerous. My research shows that this is a common and dangerous problem. Thanks for your time, [xxx] *tt
Abs light and regen brakes disabled light have been coming on while driving. While these lights are on, brakes are squishy and is harder to stop car. This is happening more frequently and at varying speeds. Lights may come on when the car is first started or while driving at varying speeds.
Failure of the regenerative braking system due to a defective master cylinder and/or hydraulic control unit ("hcu"). Very dangerous. There is no recall on this - why? Many have had the same problem! See http://blog.yagelski.com/2010/07/ford-hybrid-brake-failure-revisited.html
Tl* the contact owns a 2008 mercury mariner hybrid. While driving 5 MPH, the brake pedal was depressed, but failed to stop the vehicle. The contact placed the vehicle into park to stop the vehicle. The vehicle was towed to a dealer where it was diagnosed that the master cylinder failed and the ABS control module failed and needed to be replaced. The vehicle was repaired by the contact. The manufacturer stated that they had never heard of the failure. The failure mileage was approximately 200,000. The VIN was not available.
While driving the ABS and other warning lights came on indicating brake failure. Driving on highway 60 MPH.
Tl* the contact owns a 2008 mercury mariner hybrid. While driving approximately 35 MPH, the brakes failed. The antilock brakes and regenerative brakes disabled warning indicators illuminated. The contact coasted the vehicle to the side of road. The vehicle was towed home. The contact also stated that the warning indicators illuminated approximately twenty times before the actual failure. The vehicle was taken to two different dealers, but they could not duplicate the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The VIN was invalid. The approximate failure mileage was 131,000.
April 2016 the ABS light was on along with the message "check brake system and the regen brakes." when breaking the vehicle took much longer than normal to slow and stop. The repair for this was $4100 ($4800 with labor). I was advised that this was a safety issue since the brakes were not working properly and to not drive the vehicle. I chose to have the repair since I need the vehicle for work and still owe money on it. I did some research and it apears that this is a known problem as other complaints on the federal safety agency and other forums attest to. I contacted ford and asked that I be reimbursed as this is a safety issue. They declined my request.
Upon startup and sometimes when driving the ABS warning light will illuminate along with the service brake system and the regenerative brake system shutdown. Causing the brakes to become weak and ineffective.
When braking it takes the vehicle along time to come to a stop while driving dealer says that the hydraulic control unit is bad ( hcu ) they want 4,000 dollars to fix it.
When decelerating down hill the brakes became seemed to have no power to stop the car and required extreme force to stop the car. Afterwards the electronic motor disengaged from the engine and the automobile runs on combustion engine only without the hybrid electric motor assist.
Tl* the contact owns a 2008 mercury mariner hybrid. While driving approximately 5 MPH, the contact applied the brakes and heard an abnormal grinding sound from the brakes. Also, the ABS warning light illuminated. The failures recurred multiple times. The vehicle was taken to an independent mechanic for diagnostic testing. The mechanic stated that the ABS unit needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 93,000.
The ABS tone rings on the 2008 model mercury mariner and ford escape are defective in design - they are thin metal, but put under stress by being forced onto the half-shaft (different metal, different expansion rate), and therefore prone to cracking/breaking. When cracked/broken, they cause the ABS brake system and regenerative braking to fault out, sometimes intermittently and with no warning. The part itself is cheap (~$10 each), and apparently should be, but the dealer will not sell them separately, and instead requires the owner to replace the half-shaft, with estimates from the dealership and independent mechanics of between $400 and $1000 to replace both front half-shafts. Simply making the part thicker, or of the same metal as the half-shaft, would fix the problem - instead, ford forces owners to choose between an unsafe vehicle and robbery, with no guarantee that the problem wouldn't recur within a month of driving (the cracking seems to be more related to temperature than mileage). This should be recalled and ford should be forced to replace these at their own cost - I bet they'd then "discover" a way to prevent recurrence if they were paying out of their own pocket for any that failed before 100,000 miles. A cursory search on the internet will turn up thousands of results for this problem.
Abs and emergency brake light came on spontaneously. Braking abnormal and unable to stop vehicle. Braking system not working. Neutral and had to do shoulders to control vehicle and slow down gradually. Very dangerous!
Regenerative braking system light appeared on dash, 2013. Took vehicle in to get checked. Was told that it was the master cylinder. Cost approx 1500.00. Went on line and found that other people had same experience and after paying for the replacement of the master cylinder they then had to replace the an ABS module to the tune of 4500.00. Took my vehicle to another dealership feb of 2014 and was told the ABS module needed replaced for 4,724.00 and then the master cylinder for 1360.00. The mechanic did not advise driving due to the potential brake failure. I only have 18,600 miles on this vehicle which makes it difficult to justify putting that much more money into it. It seems to a problem ford needs to deal with. It does involve a safety issue and I'm not sure if they are going to wait until some one dies before they decide to do a recall.
From doing research on the internet I found this is a huge problem with both mercury mariners and ford escape hybrids. I was in shock when the dealer told me it will cost $4,800.00 to repair the ABS brakes. This is a safety flaw that should be a recall. I only have 65,000 miles and high payments on this vehicle. I told the dealer I would not pay this. They fixed the SUV without my permission saying it was for my safety. Is this legal? I didn't agree with paying any cost.
During braking to stop or turn, the brakes engaged and released at low speed then reengaged, causing a lurch. This problem was ongoing but intermittent. Upon researching the issue and after separate service visits to two different ford dealers, with my input from online forums, the tone rings on both front brakes were replaced, resolving the problem. These rings were cracked and according to the dealer, this is a common problem and I think these parts are defective.
Tl* the contact owns a 2008 mercury mariner hybrid. The contact stated that while pulling into a parking lot at 3 MPH, she attempted to engage the brakes but they failed to stop the vehicle. The contact mentioned that the ABS and the check brake warning lamp illuminated. Also, the contact stated that she had to crash into a tree in order to stop the vehicle. No injuries were reported. The vehicle was towed to the dealer. The manufacturer was not made aware of the failure. The vehicle was not repaired. The VIN was not available. The current and failure mileage was 104,000.
Brakes bring vehicle to stop then release and car moves forward 4-6' then brakes engage again. Could cause damage and personal injury.
Tl* the contact owns a 2008 mercury mariner hybrid. The contact was driving 10 MPH when the ABS and brake warning lights illuminated. The vehicle was taken to the dealer who advised that the electrical hydraulic braking system failed. The dealer informed him that there were no recalls for the failure. The manufacturer was contacted but provided no assistance. The vehicle was not repaired. The failure mileage was 58,034. Updated 05/05/11*lj the dealer infoemed the consumer the electronic control unit was bad. Updated 08/18/11
I have a 2008 mercury mariner hybrid. Sometimes when I apply the brakes with medium pressure the left rear of the vehicle will vibrate so hard it rattles the trim in the storage area. It is as though the ABS is operating only on that wheel but much more pronounced than when the ABS normally actuates. There is no consistency as to when or where this condition occurs. It will not happen for days, then will occur every time I brake for a time period (no particular length). *tr consumer stated he traded in on a 3 year old vehicle. Consumer stated he has no more information regarding the vehicle left all of the records he had in the vehicle when he traded it in. Updated 6/8/18
Failure of ABS brakes on 2008 mercury mariner hybrid. This has happened to my car twice. Summer of 2009 and the summer of 2010. Both times I have had to replace the master brake cylinder. Symptoms include inconsistent braking response and loss of brake fluid. Driver experiences overly sharp braking and a "grabbing" sensation as well as very soft braking and "coasting" sensation almost as if there are no brakes or very little braking. It is very hard to drive safely in this condition. Both times, repair included replacing the master cylinder with a $1500 bill. This resulted in $3000 in repair costs to avoid continuing to drive the vehicle in an unsafe condition. The master brake cylinder should not have failed once on a 2008 car much less twice and the dealership has as much told me they feel this may be a system design flaw that needs correcting through recall.
In a hard-braking situation, brakes failed - no discernible deceleration at all, pushing harder than I've ever had to before. This made for rear-ending the guy ahead of me. Forensics investigator w/ mech found odb dtcs showed only p0a8d and b1318 - one of which shows a low voltage to ABS system. Multiple reports of this with escape hybrid owners. I wonder if it is related to the ford fusion hybrid failures? This occurred at 10-15 MPH. What happens at 60? Local dealership declares "your brakes check out fine and there's no evidence of brake failure." really? How about that radiator and grill that need repair and that quarterpanel sticking out of the right side? Evidence enough? I'd like to see this issue root-caused before somebody gets seriously hurt.
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