Four problems related to power train have been reported for the 2006 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mercury Mariner based on all problems reported for the 2006 Mariner.
Recall for coolant pump on hybrid system could result in hybrid electronic overheating causing a stall like condition recall was addressed by dealership back on 7/20/2015 2nd owner has had vehicle for 9 mnths - have had 3 incidents of vehicle shutting down with dash light advising to pull over for safety and the system shutting down directly after - brakes /steering etc. For the first incident - towed to local dealership - unable to diagnose 2nd incident - to a reputable local mechanics shop - changed out normal vehicle battery 3rd incident - caused driver to roll through an intersection on a red light - struck by other vehicle.
The car shuts down on the freeway while driving at 60-70 mph. A red triangla is displayed along with a message, pull over stop safely now. This has occurred several times after driving g approxamately 30 miles. Luckily I was able to pull over safely. The car restarts within 30 seconds and will shut down again every 5 mins until the vehicle is allowed to cool down.
My Mercury Mariner's idler pulley has already broken three times in the past five months. There must be a recall on this vehicle. The car is very good and too strong for that thin bolt in this part. Luckily, the fourth time it happened, the Ford dealer didn't charge me for the new part, which also broke off two weeks later. It has also broken two belts already. Trying to solve the issue, I went to metric bolts and nuts, in wakefield, MA, and bought a higher grade hardened steel bolt/screw, and it also broke off a week later. Once again, two days ago, my mechanic put in another hardened steel screw. He added a nut near the bearing, which makes a squeaking noise, but it has not broken yet. I am now afraid to drive it far from home, because I have been towed so many times already. I have researched the internet and realized that it is a constant issue. Some people have reported the occurrence of this issue 17 times in less than a year. It is also the same frequent problem with Mazda tribute, Ford escape, Ford fusion, etc. What does it take for a recall? help! help! help!.
While building speed via an on-ramp on CA freeway 680, the transmission began to fail. Within roughly 200 yards, the car lost power and, thankfully, I was able to get my car to the side of the freeway. The first time I was able to get the car to work again, I was only able to drive about 50 yards. I then let the car 'rest' for about 20-30 minutes (while I contact my roadside assistance company). After that amount of time, I tried the car again and was able to drive to the next off-ramp (industrial way, benicia, CA). At the stop sign of that off-ramp, the car failed again and I chose to have it towed instead of continue trying to make it work properally. My Mariner is a 2006 with only 77,541 miles! my car eventually got to a transmission shop to be fixed, but it was in my research of the problem that I found failing/faulty transmissions to be a very common and known issue for Mariners with low mileage (model years of 2005-2011, at least). My complaint is that there should be a recall issued because this is a well known problem.