2008 Mercury Mariner Hybrid Engine cooling Problems

“On thursday, august 11, 2011 our 2008 Mercury Mariner Hybrid shutdown while traveling 67-70mph on I-39 in the passing lane next to a semi. Had to cut across the interstate onto loose gravel, creating a dangerous situation for multiple drivers. Had just had this 'fixed' by dealership two weeks before. I was told by the dealership at that time that it needed a chip upgrade, which was done. Unfortunately, this was not the needed 'fix' obviously. I was able to restart it like I had before, but could not drive above 60-62 MPH in order to keep vehicle running. …”

“This has occurred twice. The first time, (9-6-2010), driving in bumper-to-bumper traffic on the freeway- the light, stop safely now comes on and you cannot use the gas pedal and you have to try to get to the shoulder safely as the car has no power. I waited for half an hour and restarted the car and was able to get to where I had to go. Took it to dealer and they couldn't find anything wrong with it. The 2nd occurrence (march 31, 2012), same thing happened except I was on the freeway with everyone going at least 65 miles per hour and had to get to the shoulder without any power. …”

“Vehicle shut down while driving on the interstate, immediately losing all power. Message on dash read stop safely now . This is a very dangerous issue. Driving on the interstate at 65 MPH & losing all ability to accelerate or maintain speed is very scary. Making matters worse, this occurred during a pouring rainstorm & in a construction zone. I pulled over and turned off ignition. I was able to restart the vehicle. It then shut down repeatedly every 2 miles. The only way to restart was to pull over and turn off the ignition. I gimped it to the car dealer. …”

“The engine abruptly stopped while I was traveling 65 MPH. The car was towed to a ford dealer who diagnosed the problem as the motor electronics cooling pump. The part was replaced but was not covered by the warranty. Ford issued a technical service bulletin in november 2008 concerning this problem, so ford has been aware of this danger for years.”

“Vehicle's gas engine shut off on the freeway at 65 MPH without warning leaving only the electric motor to power it. The reduced the maximum speed to 25 MPH. Dealer said failure of the motor electronics cooling pump caused the loss of power.”