2008 Mercury Mariner Hybrid brakes NHTSA complaints: Service Brakes

NHTSA — Service Brakes Problems


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
76,070 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Mercury Mariner Hybrid brakes problems

brakes problem

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2008 Mercury Mariner Hybrid Owner Comments

problem #12

Oct 212016

Mariner Hybrid

  • 131,000 miles


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.

- Philladelphia, PA, USA

problem #11

Apr 222016

Mariner Hybrid

  • 126,000 miles
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 NHTSA and other forums attest to. I contacted Ford and asked that I be reimbursed as this is a safety issue. They declined my request.

- Ballwin, MO, USA

problem #10

May 102016

Mariner Hybrid

  • 14,900 miles
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.

- Conyers, GA, USA

problem #9

Oct 142015

Mariner Hybrid

  • 85,000 miles


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.

- Wilmington, DE, USA

problem #8

Feb 052015

Mariner Hybrid 4-cyl

  • 106,200 miles
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.

- Germantown, MD, USA

problem #7

Feb 282014

Mariner Hybrid

  • 93,000 miles
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.

- Metropolis, IL, USA

problem #6

Jan 012015

Mariner Hybrid 4WD 4-cyl

  • 84,000 miles


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.

- Alexandria, VA, USA

problem #5

Mar 222014

Mariner Hybrid 4-cyl

  • 29,000 miles
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!

- Newport News, VA, USA

problem #4

Feb 252014

Mariner Hybrid 4-cyl

  • 18,600 miles
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. 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. Took my vehicle to another dealership Feb of 2014 and was told the ABS module needed replaced for $4,724 and then the master cylinder for $1360. 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.

- South Amherst, OH, USA

problem #3

Nov 012013

Mariner Hybrid 4-cyl

  • 65,000 miles
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 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.

- St Michael, MN, USA

problem #2

Jul 222013

Mariner Hybrid 4-cyl

  • 56,135 miles
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.

- Irvington, VA, USA

problem #1

Apr 162013

Mariner Hybrid

  • 104,000 miles
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.

- Olympia , WA, USA

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