Car Problem Reports
Mercury Mariner Hybrid Coolant Pump on Hybrid May Fail and Cause CEL/Engine Shutdown
Mercury Mariner Hybrid Problem
Average Mileage: 96,647 mi (36,700 mi - 185,000 mi)
Having the same problem. What I don't understand is why is it not giving me a wrench to tell me something is wrong. In fact, it is saying the opposite, that everything is working fine and as it should. I had cruise control on, it happened about 50 miles from home. Just surged a bit, then completely shut down and gave me the PULL OVER SAFELY NOW message. Each time it happened I stopped and shut it off and restarted it and it never gave me any indication there was a problem until I got back on the highway and it happened again. and again. I had it towed to a dealer where it is now.
Visitor, 2008 Mercury Mariner Hybrid, 90,444 mi
Coolant pump went out. Same issue with sudden shutdown and needing to pull over for a while. Repair was $560 including a new bracket. The only problem I have ever had with 90k miles. I read this website before going to dealer, told them it was likely the coolant pump, and their diagnosis was exactly the same. Thanks!
Visitor, 2007 Mercury Mariner Hybrid, 78,000 mi
car completely shuts down while driving...have to pull over and restart...will go for awhile and then have to keep doing this...we thought we had bought bad gas
Visitor, 2007 Mercury Mariner Hybrid, 92,000 mi
This same problem happened to my 2007 hybrid. Check engine light came on and engine quit. After pulling over the car was able to restart. We did this on backroads continually for our 80 mile drive home, the car ran a little less time after each restart. The coolant pump was replaced - I'm thinking it was in the $400 range.
Visitor, 2007 Mercury Mariner Hybrid, 107,500 mi
My mercury mariner hybrid stalls on the interstate. Just prior to the stall, the vehicle seems to lunge forward slightly, then the engine quits. We have to pull over and restart. One day this happened to me twice, within a few hours apart of each other.
Visitor, 2008 Mercury Mariner Hybrid, 114,799 mi
shortly after purchasing used 2008 mariner it shut off on the frwy, "triangle w/!" went on but nothing else except "pull over safely now!" did so, turned car off then on & conteniued on my trip. months later it happened again then just last week it turned off several times during a very short trip. a day or two later with this pattern continued finally the "temperature indicator" lit & said "motor temp high!" took it to aamco had "motor electronic cooling system pump" replaced for $573.25! I will soon find out if its been fixed!
ABS light on, ABS control unit cost $3340.00, labor $625.00.
High motor temperature on/off then stop safely now, then engine dies, restart after a mile dies again and again... This is so dangerous in the highway without shoulder because there is no warning, you are running 65mph then drops to a slower speed suddenly, then the engine shut down and then gives you that message Stop safely now, where there's no place to stop. I will never follow this kind of vehicle on the road because it will create an accident. I replaced the thermostat and flush the radiator and now the coolant pump ($625.00), with this mileage, the hybrid battery will be next expense (8,000).
Use some math, the expense exceed more than the value, therefore it goes to the junk yard.
Visitor, 2008 Mercury Mariner Hybrid, 108,000 mi
Was driving on freeway, engine shut off with alert to "Pull Over Safely Now". Was able to restart the vehicle, but it shut off again. Had it towed to a Ford dealership and confirmed it was the hybrid mechanical pump for cooling the hybrid system.
Visitor, 2008 Mercury Mariner Hybrid, 75,900 mi
Thanks to all of you sharing your experiences. I too was having my vehicle shut off while driving. Would pull over and wait a couple of minutes and back on the road I was. Two minutes later it shuts off and tells me to pull over safely. No wrench or anything telling what the problem is. I too had it towed but to my house. The next day the wife used with no problems for the next two days. I then drove it and off it goes again. Made it home and left it alone. Got on this web site and read that the same problem occurred with my car. I bought the Coolant pump myself and replaced it ($182.00). Problem solved...for now.
Visitor, 2008 Mercury Mariner Hybrid, 64,000 mi
The vehicle dies suddenly and indicates " Safely stop the vehicle Now". There is no choice because the engine is lifeless. This occurs intermittently, but most often when temperatures are high.