2007 Mercury Mariner Hybrid: sudden loss of power

Filed Jul 7, 2014 · Engine, Fuel system · 65,000 miles · VA

I was driving my '07 mariner hybrid on the nj turnpike at freeway speeds when the red triangle & message "stop safely now" appeared on the dash. The propulsion system stopped and I was able to navigate off to the shoulder and bring the vehicle to a safe stop. Having an immediate loss of power while traveling on the turnpike was very scary and I felt unsafe knowing that I didn't have any options but to exit the freeway immediately. This could have resulted in an accident. After letting the system sit for about 20-minutes I started the vehicle and resumed my travel. Same error message and loss of propulsion happened again, and this time I navigated the hybrid to a ford dealer in nj. It's very scary to be traveling at highway speeds and then a second later not have any propulsion. This could be handled much better and I recommend the engine continue to perform so that I can safely exit the freeway with more time.

Filed May 22, 2012 · Engine, Transmission · 70,100 miles · IL

Travelling on illinois I-55 south early in the morning. About 2 miles north of us highway 6 exit car lost power and I noticed "stop safely now" message. I pulled off to side of road. Car started right up. I went about a 2 miles and car did the exact same thing. I was real close to the golf course and made it there. No problems on the way home or since. Car never acted or sounded ?funny?. Car repaired by local lincoln ford dealer. They said they replaced an engine coolant pump ($695 including labor and taxes) that is unique to hybrid. They said I was the third hybrid this week-end--probably had something to do with cold weather. Coolant pump has a different design so they may have had original design problems.

Filed Feb 24, 2012 · Engine · 68,120 miles · NY

I own a 2007 mercury mariner hybrid and I was traveling from virginia where I previously lived to new york for a job interview. While traveling on the new jersey turnpike at a speed of around 73 miles per hour a light came on in my vehicle that stated "stop vehicle safely." I was traveling in the furthest left hand lane of 4 at the time and within about 2 or 3 seconds of this light coming on I lost gas engine power to my vehicle. I was honestly scared for my life because the only portion of my vehicle that was working is the electric engine that allows the vehicle to go around 25 miles per hour. I was able to safely pull my vehicle off of the road while nearly getting hit by 3 or 4 cars/tractor trailers. I contacted ford/mercury roadside assistance and they were going to come out, but them the vehicle ran fine. On my return trip the vehicle did this another 3 or 4 times. Immediately when I got back to virginia I took it to beach ford and they found that the coolant pump for the hybrid system had gone bad and needed to be replaced. I questioned why the gas engine would shut done and beach ford and ford corporate both told me the same thing, this was a safety precaution set into the vehicles computer. I explained that this is not safe at all and losing power at highway speeds and causing accidents is not a safety precaution at all it is dangerous. I did not receive any further explainations from ford except for the same thing over and over again. I have a 15 month old son and this is not safe, I am very concerned about this happening again with him in the vehicle. I am very surprised this safety precaution would pass government standards. I am looking for you to look into this and get back to me because ford should not be producing vehicles that can cause accidents because of a coolant pump going bad.

Filed Jun 20, 2011 · 117,500 miles · WI

I have a 2007 mercury mariner hybrid with 118,000 miles. Yesterday, the exclamation mark warning light came on 12 times in 8 miles. I turned around and it came on an additional 10 times on the way home. There is first a loss of power, the light comes on. I swerve onto the shoulder before I can turn off the engine there is a jolt. I have taken my car to the dealership before and they said to "pull over and shut off the engine for a minute and then restart engine". I have lost faith in the safety of this car.

Filed Jul 11, 2010 · Engine · 64,680 miles · MA

While I was driving my 2007 mercury mariner hybrid at 65 MPH on a highway, the red triangle came on and the message "stop safely now." the car completely and suddenly lost all power. I tried to give it some gas but to no avail. I pulled over, shut it off for a few minutes, and then was able to restart it and make it home. I have 64,000 miles on the car. I see that there are service bulletins describing this problem, but am upset that I was not informed about it, especially since the warranty goes to 60,000 miles.