Two problems related to car stall have been reported for the 2011 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Mercury Mariner based on all problems reported for the 2011 Mariner.
Started vehicle in the morning for work & yellow wrench light came on, combined with "limp mode" symptoms of no throttle response. Googled & found multiple complaints for similar issues with this motor. Called local Ford dealer who said the throttle body has had 3 different part numbers which leads me to believe that this has been a know issue for a while now. Ordered the latest version of the throttle body & will have it replaced by my mechanic who said its a 1/2 hr install. I will be keeping the receipts & hopefully Ford will be kind enough to reimburse those who have had this fixed, if the issue does end up becoming a recall. What a headache.
Car seems to stall all power stays on but the car shakes and then stalls and the wrench light comes on which is a powertrain light. Took car to dealer they say there is nothing wrong with it. They reset the light. One week after bring the car to the dealer the wrench light comes back on and the car stalls this time I was going 55 miles an hour on a parkway thankfully I was able to pull over before the car stopped. Brought to dealer, nothing is wrong with the car they recommended me to leave the heat off because there could be a problem with the heat. (don't understand that) last week the car stalled again and the wrench light came on. I am currently waiting to bring it in for service. This is not good nor safe.