Three problems related to service brakes 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.
Tone ring snapped off of axle and caused the car to go into 2wd and apply the abs brakes when not actually being needed which almost ended up in rear ending a car when the failure occurred. Tone ring design needs looked it. This should not happen. Corrosion building up between the tone ring and axle seems to be what caused the force of snapping this ring. Just a poor design.
L/h tone ring on axel cracked and threw an abs warning, brake service warning and 4wd light blinking. At approx 65,000 the r/h tone ring cracked as well but was small enough that it did not trip the sensor. I noticed a clicking sound when turning into parking spaces. This was fixed under my extended warranty. From searches on the internet this seems to be a design flaw of this weak part. Dealers try to get you to replace the entire axel which is not needed as did the Ford dealer in margate. Ford should be replacing these tone rings with a part with stronger tensile strength so it does not crack. This needs to be a recall as it will strand many who see all the lights and warnings go off and think they cannot continue driving. This is a poor design, a poorly made part and through it's dealer network a rip-off for customers who are told the entire axel needs replacement.