NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
117 reports48,000 miles · Apr 18, 2011
Vehicle Speed Control
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED WHILE ATTEMPTING TO ACCELERATE FROM A COMPLETE STOP, THE PEDAL WAS ABNORMALLY RESISTANT AND THE VEHICLE WOULD NOT RESPOND. THE ENGINE WAS TURNED OFF AND WHEN RESTARTED, THE VEHICLE RESUMED NORMAL OPERATION. THE FAILURE RECURRED THREE TIMES INTERMITTENTLY. THE V…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED WHILE ATTEMPTING TO ACCELERATE FROM A COMPLETE STOP, THE PEDAL WAS ABNORMALLY RESISTANT AND THE VEHICLE WOULD NOT RESPOND. THE ENGINE WAS TURNED OFF AND WHEN RESTARTED, THE VEHICLE RESUMED NORMAL OPERATION. THE FAILURE RECURRED THREE TIMES INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 48,000.
NHTSA ODI #10396706
Mileage unknown · Apr 18, 2011
Engine And Engine Cooling
AS OF APRIL 18,2011 MY RADIATOR IS CRACKED AND I HAVE TO REPLACE IT FOR THE THIRD TIME. MY MERCURY MOUNTAINEER IS A 2006 AND IN 2008 I HAD TO REPLACE THE RADIATOR WHICH COST ME AROUND 800.00 WITH LABOR AND HERE WE ARE IN APRIL OF 2011 AND I HAVE TO REPLACE MY RADIATOR AGAIN. THIS IS COSTING ME TO MUCH MONEY AND WITH ALL THESE CO…
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AS OF APRIL 18,2011 MY RADIATOR IS CRACKED AND I HAVE TO REPLACE IT FOR THE THIRD TIME. MY MERCURY MOUNTAINEER IS A 2006 AND IN 2008 I HAD TO REPLACE THE RADIATOR WHICH COST ME AROUND 800.00 WITH LABOR AND HERE WE ARE IN APRIL OF 2011 AND I HAVE TO REPLACE MY RADIATOR AGAIN. THIS IS COSTING ME TO MUCH MONEY AND WITH ALL THESE COMPLAINTS ABOUT THE RADIATOR, YOU WOULD THINK THAT THEY WOULD HAVE A RECALL ON THE 2006 MERCURY MOUNTAINEER RADIATOR. SOMEBODY NEEDS TO DO SOMETHING ABOUT THIS BECAUSE A RADIATOR SHOULD NOT HAVE TO BE REPLACE 3 OR MORE TIME IN LESS THEN 5 YEARS. PLEASE DO SOMETHING ABOUT THIS. THANKS *TR
NHTSA ODI #10396669
45,000 miles · Mar 15, 2011
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE RADIATOR WAS LEAKING ON THE UPPER RIGHT HAND SIDE OF THE VEHICLE. HE HAD TO REPLACE THE RADIATOR THREE TIMES DUE TO THE IDENTICAL FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER WHO CONFIRMED THAT THERE WAS A LEAK AND STATED THAT THE RADIATOR NEEDED TO BE R…
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TL*THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE RADIATOR WAS LEAKING ON THE UPPER RIGHT HAND SIDE OF THE VEHICLE. HE HAD TO REPLACE THE RADIATOR THREE TIMES DUE TO THE IDENTICAL FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER WHO CONFIRMED THAT THERE WAS A LEAK AND STATED THAT THE RADIATOR NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 45,000 AND CURRENT MILEAGE WAS 95,000.
NHTSA ODI #10390288
Mileage unknown · Mar 2, 2011
Engine And Engine CoolingEquipment
2006 MERCURY MOUNTAINEER. RADIATOR BEING REPLACED FOR THE 2ND TIME IN 8 MONTHS. ACCORDING TO THE MECHANIC THE RADIATOR IS COMPLETELY CORRODED BOTH TIMES. *TR
NHTSA ODI #10386157
80,000 miles · Feb 16, 2011
Engine And Engine Cooling
2006 MERCURY MOUNTAINEER DRIVING ON THE HIGHWAY, SUDDENLY THE COOLANT TEMPERATURE WENT UP CRAZILY AND THE ENGINE SOUNDED HORRIBLE AND LOST POWER. FORTUNATELY STOPPED BY THE ROADSIDE AND FOUND THE RADIATOR WAS LEAKING AND COOLANT IS ALMOST EMPTY. SEARCHED AROUND THE WEB AND FOUND THAT FOR 4.0 ENGINE FROM FORD AND MERCURY, THIS I…
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2006 MERCURY MOUNTAINEER DRIVING ON THE HIGHWAY, SUDDENLY THE COOLANT TEMPERATURE WENT UP CRAZILY AND THE ENGINE SOUNDED HORRIBLE AND LOST POWER. FORTUNATELY STOPPED BY THE ROADSIDE AND FOUND THE RADIATOR WAS LEAKING AND COOLANT IS ALMOST EMPTY. SEARCHED AROUND THE WEB AND FOUND THAT FOR 4.0 ENGINE FROM FORD AND MERCURY, THIS IS PRETTY NORMAL PROBLEM DUE TO A DESIGN DEFECT. PEOPLE ARE CHANGING RADIATOR EVERY YEAR. NEVER HEARD SUCH RIDICULOUS THING THAT NOWADAYS THE RADIATOR LAST SO SHORT TIME. IT SHOULD LAST LIFE TIME OF THE CAR. FORD APPARENTLY KNEW IT, HOWEVER, THEY ONLY ANNOUNCED A TSB IN 2009 WHEN MOST OF THE WARRANTIES WERE GONNA EXPIRE. THEY SHOULD ISSUE A RECALL. THIS IS A DESIGN PROBLEM AND IT POSES LIFE THREATENING RISKS. I GUESS THEY JUST DON'T CARE ABOUT CUSTOMERS. THE CUSTOMERS NEED TO REPAIR OUT OF THEY OWN POCKETS, WHICH SUPPORT FORD'S CHAIN DEALERS SERVICE DEPARTMENTS. WELL, SOUNDS A GOOD PLAN FOR THEM. WELL, THE CUSTOMERS ARE NOT STUPID. THEY ARE CHANGE TO JAPANESE CARS, WHICH HAVE FAR LESS PROBLEMS. I WILL NEVER A FORD?MERCURY CAR AND WOULD BE GLAD TO SEE THEM GO BANKRUPTCY. *TR
NHTSA ODI #10382969
42,000 miles · Feb 14, 2011
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE THE VEHICLE WAS HAVING A REGULAR MAINTENANCE PERFORMED THE MECHANIC NOTICED THE RADIATOR WAS CRACKED. ALSO, THE TEMPERATURE GAUGE DID NOT INDICATE THAT THE VEHICLE WAS HOT. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THAT THE RADIATOR WAS CRACKED CA…
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TL*THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE THE VEHICLE WAS HAVING A REGULAR MAINTENANCE PERFORMED THE MECHANIC NOTICED THE RADIATOR WAS CRACKED. ALSO, THE TEMPERATURE GAUGE DID NOT INDICATE THAT THE VEHICLE WAS HOT. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THAT THE RADIATOR WAS CRACKED CAUSING A LEAKAGE AND IT NEEDED TO BE REPLACED. THE MANUFACTURER WAS CONTACTED WHO REFUSED TO PROVIDE ANY ASSISTANCE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE 42,000 AND CURRENT MILEAGE WAS 48,000.
NHTSA ODI #10382659
40,000 miles · Feb 5, 2011
Unknown Or Other
OWNER OF A 2006 MERCURY MOUNTAINEER. I PURCHASED MY VEHICLE IN FEBRUARY 2010. THE RETRACTABLE RUNNING BOARDS DO NOT OPERATE PROPERLY. SOMETIMES UP THEN DOWN ONE UP THE OTHER DOWN. DISCONNECTING MOTOR OR PULLING FUSES ARE NOT THE ANSWERS. STEEL MIXED WITH ALUMINUM PINS IS BAD BUT CAN BE FIXED. I REVIEWED NUMEROUS ON-LINE COM…
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OWNER OF A 2006 MERCURY MOUNTAINEER. I PURCHASED MY VEHICLE IN FEBRUARY 2010. THE RETRACTABLE RUNNING BOARDS DO NOT OPERATE PROPERLY. SOMETIMES UP THEN DOWN ONE UP THE OTHER DOWN. DISCONNECTING MOTOR OR PULLING FUSES ARE NOT THE ANSWERS. STEEL MIXED WITH ALUMINUM PINS IS BAD BUT CAN BE FIXED. I REVIEWED NUMEROUS ON-LINE COMPLAINTS AND WANTED TO KNOW WHY THIS ITEM HAS NOT BEEN RECALLED. THE BOARDS HALF WAY DOWN IS A CONSTANT TRIP HAZARD WHEN GETTING IN AND OUT OF THE VEHICLE. 1500 DOLLARS TO REPLACE THE ENTIRE UNIT IS THE WRONG ANSWER. THIS IS CLEARLY A DESIGN PROBLEM ON A GREAT VEHICLE
NHTSA ODI #10380822
80,000 miles · Jan 25, 2011
Engine And Engine Cooling
RADIATOR DEFECT IN 2006 MERCURY MOUNTAINEER. REPLACED AT 40,000 MILES AND AT 80,000 MILES. NOT COVERED UNDER WARRANTY AND NOT RECALLED AS OF YET. *TR
NHTSA ODI #10378623
Mileage unknown · Jan 25, 2011
Engine And Engine Cooling
MY 2006 MERCURY MOUNTAINEER RADIATOR IS CRACKED. I 'VE ASKED MECHANICS AND THEY TOLD ME THAT THE RADIATORS HAVE HAD PROBLEMS. I WENT ONLINE AND THERE SEEMS TO BE THE SAME PROBLEM THAT I AM HAVING. I'M SURE FORD IS AWARE OF THE PROBLEM BUT THEY ARE NOT TAKING ANY ACTION TOWARDS THE PROBLEM. CAN YOU HELP US. *TR
NHTSA ODI #10378570
65,000 miles · Jan 24, 2011
Engine And Engine Cooling
MY 2006 MERCURY MOUNTAINEER RADIATOR NEEDS REPLACING BECAUSE IT IS BUSTED. I ONLY HAVE AN ESTIMATE OF 65,000 MILES ON IT. THE PART WILL COST ME $285.00 NOT INCLUDING THE LABOR. THIS VEHICLE IS ONLY 4 YEARS OLD HOW COULD A PART LIKE THIS ALREADY NEED REPLACING. *TR
NHTSA ODI #10378514