Mercury Mariner Hybrid
Report: Coolant Pump on Hybrid May Fail and Cause CEL/Engine Shutdown
Mercury Mariner Hybrid Problem
Average Mileage: 91,582 mi (36,700 mi - 185,000 mi)
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
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, 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, 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.
shuts down when ever it wants be driving in the city or highway not sure what the problem is. where is the coolant pump located.
Visitor, 2008 Mercury Mariner Hybrid, 58,200 mi
No forewarning or "odd stuff" beforehand. Engine shuts off completely (sadly on the freeway) with a Stop Safely Now warning and the "Hazard!" light (! in a triangle). Cooling fan running at full speed if the engine is hot. Turning the ignition off and back on will restart the engine for a while at least. $640 worth of repairs to replace the coolant pump.