Air Conditioner Problems of Mercury Mariner Hybrid

While traveling on an interstate highway, car lost power, speed declined to 25 mph and went into hybrid mode. "pull over safely" light went on. We pulled over and turned off engine. After a few minutes it restarted and we were able to drive the car at normal speed. The outside temperature was high--in the 90s--and the air conditioning was on high when the power failed. We had a similar incident about a month earlier while trying to park the car on a hot day with air conditioning on. . Speed was minimal because we were parking but car lost power and pull over safely light went on. After second incident we took car to a Ford dealer who said the hybrid system cooling pump had failed and needed to be replaced. Cost to replace the pump was $470.

See all problems of the 2008 Mercury Mariner Hybrid 🔎.

Stalling, total loss of power on freeway, or making a city turn, or accelerating from a stop sign or light, or going up even a slight incline, such as a driveway to a house. Only in the summer. Do not dare use air conditioning, which makes it occur quicker and much more often. 95 degrees outside, 113 degrees in car - cannot and do not use air conditioner, but still happens on trip over 15 minutes long. Totally unsafe. Like other contributors, I would like to know why there has been no recall. Just today, July 10, 2013, 18-wheeler behind me (close) on 45 mph city street, and I stalled. I stuck my left hand out of my window in a "please stop" gesture, and driver did stop, but I was terrified. Must come to full stop, put car in park to re-start it. But same thing will happen at next light or sign or change of speed, whether in 5 minutes or 30 seconds, city street or freeway. At this point, I would say this has happened approximately 250 times. Yes, that is not a typo. No question Ford knows about this.