One problem related to check engine light on has 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.
I only had my car 4 days when driving on the garden state parkway at approximately 60 mph on a Sunday with my grandchildren in the car. Luckily, I was in the slow lane when the SUV just shut off. I was able to pull onto the shoulder and restart the car. I was near an exit and proceeded down the ramp. The car again shut off at the bottom on the ramp. The check engine light stayed on. I called the dealer the next day (Monday) and brought the car in on Tuesday. It is now Friday and I still do not have my car.