NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
43 reportsClear category filter40,000 miles · Mar 7, 2012
Engine And Engine CoolingPower Train
IN JULY 2009 AT 40000 MILES THE RADIATOR HAD A HAIRLINE FRACTURE AND THE RADIATOR HAD TO BE REPLACED, PAID OUT OF POCKET BY OWNER. IN MARCH 2010, AT 60000 MILES, ANOTHER RADIATOR IS BEING PUT IN THIS VEHICLE, AGAIN OUT OF POCKET EXPENSE FOR OWNER. THERE SHOULD NOT BE A NEED FOR A VEHICLE TO HAVE HAD 3 RADIATORS AT 60000 MILES. T…
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IN JULY 2009 AT 40000 MILES THE RADIATOR HAD A HAIRLINE FRACTURE AND THE RADIATOR HAD TO BE REPLACED, PAID OUT OF POCKET BY OWNER. IN MARCH 2010, AT 60000 MILES, ANOTHER RADIATOR IS BEING PUT IN THIS VEHICLE, AGAIN OUT OF POCKET EXPENSE FOR OWNER. THERE SHOULD NOT BE A NEED FOR A VEHICLE TO HAVE HAD 3 RADIATORS AT 60000 MILES. THE DEALERSHIP STATES THIS IS A KNOWN ISSUE WITH THIS MODEL AND THAT THESE ARE POORLY PLACED AND MANUFACTURED RADIATORS. FORD/MERCURY SHOULD RECALL THESE VEHICLES AND REIMBURSE OUT OF POCKET EXPENSES FOR ANYONE THAT HAS PROOF OF RADIATORS BEING REPLACED. *TR
NHTSA ODI #10450637
42,000 miles · Jan 18, 2012
Engine And Engine CoolingInjury
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED ANTI-FREEZE FUMES WERE INSIDE OF THE VEHICLE AND A PREGNANT PASSENGER BECAME ILL FROM THE FUMES. THE CONTACT LATER DISCOVERED THAT THE ANTI-FREEZE WAS LEAKING. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE DEALER WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACT…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED ANTI-FREEZE FUMES WERE INSIDE OF THE VEHICLE AND A PREGNANT PASSENGER BECAME ILL FROM THE FUMES. THE CONTACT LATER DISCOVERED THAT THE ANTI-FREEZE WAS LEAKING. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE DEALER WAS UNABLE TO DUPLICATE THE FAILURE. THE MANUFACTURER HAD NOT BEEN NOTIFIED OF THE FAILURE NOR WAS THE VEHICLE REPAIRED. THE CURRENT MILEAGE WAS 55,000 AND THE FAILURE MILEAGE WAS 42,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10444359
62,000 miles · Nov 18, 2011
Engine And Engine Cooling
THE RADIATOR COOLANT SYSTEM IS JUNK. BUSTED SEALS AND HOSES ALL THE TIME. I AM BEGINNING TO THINK THIS CAR IS A LEMON. I REPLACED MY RADIATOR LESS THAN 1 YEAR AGO, HAD THE PART REPLACED WITH THE FACTORY PART FORD SUPPLIES AND ONCE AGAIN I HAVE A BUSTED SEAL AND HAVE TO REPLACE THE RADIATOR AGAIN. WHEN ARE THEY GOING TO RECALL TH…
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THE RADIATOR COOLANT SYSTEM IS JUNK. BUSTED SEALS AND HOSES ALL THE TIME. I AM BEGINNING TO THINK THIS CAR IS A LEMON. I REPLACED MY RADIATOR LESS THAN 1 YEAR AGO, HAD THE PART REPLACED WITH THE FACTORY PART FORD SUPPLIES AND ONCE AGAIN I HAVE A BUSTED SEAL AND HAVE TO REPLACE THE RADIATOR AGAIN. WHEN ARE THEY GOING TO RECALL THIS PART? SERIOUSLY I'VE DONE MY RESEARCH AND THE RADIATORS ON THESE VEHICLES BUSTING ISN'T AN ISOLATED INCIDENT. IS FORD GOING TO PAY $400.00 DOLLARS EVERY 6 OR SO MONTHS TO REPLACE MY RADIATOR. I WISH SOMEONE WOULD FILE A CLASS ACTION LAW SUIT OR SOMETHING. *TR
NHTSA ODI #10436297
58,753 miles · Oct 8, 2011
Engine And Engine Cooling
I HAVE LEAK IN MY RADIATOR, AND AFTER DOING SOME RESEARCH ON THE INTERNET I FOUND OUT THAT THERE IS ALOT OF COMPLAINTS ABOUT THAT TYPE OF RADIATOR IN THAT VEHICLE, AND EVERY ONE OF THE CASES IS IDENTICAL AND NOW I AM THE NEXT VICTIM OF THIS RADIATOR FAILURE. SOME THING NEEDS TO BE DONE ABOUT THE RADIATOR PROBLEMS MERCURY IS HAVI…
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I HAVE LEAK IN MY RADIATOR, AND AFTER DOING SOME RESEARCH ON THE INTERNET I FOUND OUT THAT THERE IS ALOT OF COMPLAINTS ABOUT THAT TYPE OF RADIATOR IN THAT VEHICLE, AND EVERY ONE OF THE CASES IS IDENTICAL AND NOW I AM THE NEXT VICTIM OF THIS RADIATOR FAILURE. SOME THING NEEDS TO BE DONE ABOUT THE RADIATOR PROBLEMS MERCURY IS HAVING ON THE 2006 MOUNTAINEERS. MY VEHICLE IS VERY WELL MAINTAINED AND DON'T EVEN HAVE 60,000 MILES ON IT YET.I COMPLETELY UNDERSTAND THERE WILL ALWAYS BE SOME KIND OF MECHANICAL ISSUES TO DEAL WITH NOTHING LAST FOREVER, BUT MOST RADIATORS USUALLY OUTLAST THE VEHICLE. *TR
NHTSA ODI #10429200
53,000 miles · Oct 4, 2011
Engine And Engine CoolingPower Train
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE RADIATOR STARTED TO OVERHEAT. THE DRIVER WAS ABLE TO CONTINUE DRIVING AND ADDED WATER TO THE RADIATOR. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT T…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE RADIATOR STARTED TO OVERHEAT. THE DRIVER WAS ABLE TO CONTINUE DRIVING AND ADDED WATER TO THE RADIATOR. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT THE FAILURE WAS CAUSED BY NORMAL WEAR AND TEAR. IN ADDITION, HE NOTICED THAT WHEN SHIFTING FROM PARK TO REVERSE, THE VEHICLE WOULD HESITATE AND JERK VIOLENTLY INTO THE CORRECT GEAR. THE FAILURE MILEAGE WAS APPROXIMATELY 53,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10428441
57,300 miles · May 12, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT HE NOTICED A PUDDLE OF UNKNOWN FLUIDS LEAKING FROM THE VEHICLE. HE THEN TOOK THE VEHICLE TO A INDEPENDENT MECHANIC AND THEY ADVISED HIM THAT THE RADIATOR WAS FRACTURED AND CAUSING THE LEAK. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND TH…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT HE NOTICED A PUDDLE OF UNKNOWN FLUIDS LEAKING FROM THE VEHICLE. HE THEN TOOK THE VEHICLE TO A INDEPENDENT MECHANIC AND THEY ADVISED HIM THAT THE RADIATOR WAS FRACTURED AND CAUSING THE LEAK. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT THERE WERE NO RECALLS FOR THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 57,300. UPDATED 06/16/11*LJ UPDATED 06/21/11*JB
NHTSA ODI #10400617
98,000 miles · May 9, 2011
Engine And Engine Cooling
RADIATOR HAS FAILED A SECOND TIME IN 3 YEARS ON 2006 MERCURY MOUNTAINEER. *TR
NHTSA ODI #10399499
30,000 miles · Apr 29, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS LEAKING COOLANT. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE RADIATOR WOULD NEED TO BE REPLACED. THE CONTACT MENTIONED THAT HE HAD THE RADIATOR REPLACED A TOTAL OF THREE TIMES AS A RESULT OF THE SAME FAILURE. THE MANUFACTURER …
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS LEAKING COOLANT. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE RADIATOR WOULD NEED TO BE REPLACED. THE CONTACT MENTIONED THAT HE HAD THE RADIATOR REPLACED A TOTAL OF THREE TIMES AS A RESULT OF THE SAME FAILURE. THE MANUFACTURER WAS NOT CONTACTED IN REGARDS TO THE FAILURE AND THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 30,000 AND THE CURRENT MILEAGE WAS 63,000.
NHTSA ODI #10398281
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