Ten problems related to service brakes have been reported for the 2008 Mercury Mariner Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mercury Mariner Hybrid based on all problems reported for the 2008 Mariner Hybrid.
I have abs, brake warning and regen brakes disabled messages on dash. Ford mechanic estimated cost over 5k.
Hcu module failure at 60,000 miles. This failure is mentioned intsb 05-8-5 & in NHTSA id# 10017553 this seems to be a recurring problem in many Ford escape/ Mercury Mariner Hybrids going back to 2005. My dealer estimated the cost to be almost $6000. This is very disturbing, especially since this vehicle has been well maintained since purchased in 2009. Is Ford going investigate this problem? can you do anything to help with the financial burden placed on an owner of one of your vehicles? we have purchased a number of Ford products over the years & feel that customer loyalty should be considered. I have lost faith in Ford since this has occurred. I have decided to notify you of this situation since this repair cost is out of the question. Thank you for your consideration in this matter.
Tl the contact owns a 2008 Mercury Mariner Hybrid. While driving approximately 30 mph, the abs and brake warning indicators illuminated. The brake pedal was depressed to the floorboard to stop the vehicle. The vehicle was taken to roesch Ford (333 w grand Ave, bensenville, IL 60106, (630) 279-6000) where it was diagnosed that the hydraulic control unit failed and needed to be replaced; however, the failure recurred. The vehicle was taken to an independent mechanic where it was diagnosed that the hydraulic control unit failed. The vehicle was repaired, but the failure recurred a third time. The vehicle was not repaired again. The manufacturer was notified of the failures and referred the contact to NHTSA. The approximate failure mileage was 94,000. The VIN was not available.
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.
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.
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 lerch. 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.
Brakes bring vehicle to stop then release and car moves forward 4-6' then brakes engage again. Could cause damage and personal injury.
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).