IllustrationTRANSMISSION OIL LEAKING INTO COOLANT SYSTEM AND COOLANT LEAKING INTO TRANSMISSION.
2005 Nissan Frontier
Owner reports · Recalls · Investigations
More warning signs than most Frontier years
Owner complaints for the 2005 Nissan Frontier are substantially higher than the model-year median of 64.
About this comparison →How this year compares
Owner complaints by model year
Compare all Frontier years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
180–25K
5225–50K
9250–75K
12975–100K
156100–150K
32150K+
479 reports with mileage · 53 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Power Train. Review the 262 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 119 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 106 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
9 crash reports8 fire reports9 injury reports
Engine complaints
80 reportsRADIATOR LEAKING FLUID INTO TRANSMISSION . NOTICES SLIGHT SHUTTER AT HIGH SPEED, APPROXIMATELY 65 MPH, IN THE TRANSMISSION. VEHICLE WAS CHECKED BY DEALER AT 89,000 MILES WITHOUT ANY ISSUE AT THAT TIME . DEALER WOULD NOT REPLACE RADIATOR DUE TO NO PROBLEM AT THAT TIME. VEHICLE IS AT 112000 AND NOW RADIATOR FAILS. NISSAN WOULD NOT…
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RADIATOR LEAKING FLUID INTO TRANSMISSION . NOTICES SLIGHT SHUTTER AT HIGH SPEED, APPROXIMATELY 65 MPH, IN THE TRANSMISSION. VEHICLE WAS CHECKED BY DEALER AT 89,000 MILES WITHOUT ANY ISSUE AT THAT TIME . DEALER WOULD NOT REPLACE RADIATOR DUE TO NO PROBLEM AT THAT TIME. VEHICLE IS AT 112000 AND NOW RADIATOR FAILS. NISSAN WOULD NOT COVER DUE TO OUT OF EXTENDED WARRANTY. FAULTY DESIGNED SYSTEM AND POTENTIAL SAFETY HAZARD IN MY OPINION. VEHICLE AT MY INDEPENDENT MECHANIC FOR NEW RADIATOR AND TRANSMISSION FLUSH OUT TO SEE IF IT WILL FIX PROBLEM. MAJOR EXPENSE FOR POOR DESIGN PASSED ONTO CUSTOMER. I WILL NOT SPEND ANY MORE MONEY WITH NISSAN.
RADIATOR AND TRANSMISSION FAILURE DUE TO COOLANT LEAKING INTO THE TRANSMISSION. THIS POSES A SIGNIFICANT SAFETY ISSUE WHEN I LOSE POWER ON A BUSY INTERSTATE. THE TRANSMISSION LOSES POWER WHEN TRYING TO UPSHIFT. INSPECTION COMPLETED VIA AN AUTHORIZED NISSAN DEALERSHIP. EFFORTS TO RECTIFY WITH NISSAN HAVE FAILED. THIS ISSUE HAS BE…
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RADIATOR AND TRANSMISSION FAILURE DUE TO COOLANT LEAKING INTO THE TRANSMISSION. THIS POSES A SIGNIFICANT SAFETY ISSUE WHEN I LOSE POWER ON A BUSY INTERSTATE. THE TRANSMISSION LOSES POWER WHEN TRYING TO UPSHIFT. INSPECTION COMPLETED VIA AN AUTHORIZED NISSAN DEALERSHIP. EFFORTS TO RECTIFY WITH NISSAN HAVE FAILED. THIS ISSUE HAS BEEN KNOWN FOR QUITE SOME TIME AND IS MARKED AS AN OPEN NHTSA INVESTIGATION.
VEHICLE SHUT OFF WHILE DRIVING ON THE HIGHWAY. I WAS DRIVING DOWN THE HIGHWAY AT 65 MPH WHEN THE TRUCK MADE A QUICK JERK AND THEM COMPLETELY SHUT OFF. I CAME VERY CLOSE TO CAUSING A HIGHWAY PILE UP!! I HAD NO POWER, NO STEERING NO NOTHING. LUCKILY I WAS ABLE TO GET ACROSS 3 LANES SAFELY. CARS WERE SLAMMING ON BRAKES AND LUC…
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VEHICLE SHUT OFF WHILE DRIVING ON THE HIGHWAY. I WAS DRIVING DOWN THE HIGHWAY AT 65 MPH WHEN THE TRUCK MADE A QUICK JERK AND THEM COMPLETELY SHUT OFF. I CAME VERY CLOSE TO CAUSING A HIGHWAY PILE UP!! I HAD NO POWER, NO STEERING NO NOTHING. LUCKILY I WAS ABLE TO GET ACROSS 3 LANES SAFELY. CARS WERE SLAMMING ON BRAKES AND LUCKILY I DIDNT KILL MYSELF OR ANYONE ELSE. ONCE I GOT THE THE SIDE OF THE ROAD I WAS ABLE TO GET THE TRUCK GOING AND SAFELY GET TO AN EXIT. I CREEPED HOME ON A WING A PRAYER AND NOW THE TRUCK IS SITTING IN MY DRIVEWAY. I DONT DARE TO USE IT AND I NEED IT. I AM SCARED TO DRIVE IT, ITHAS GIVEN ME ANXIETY, IT WAS HORRIFIC. MY TRUCK HAS 94220 MILES ON IT.
TIMING CHAIN ON 2005 NISSAN FRONTIER. THE ENGINE MAKES A LOUD WHINING NOISE DUE TO THE CHAIN CONTACT. WHEN THE VEHICLE IS STATIONARY OR MOTION IT MAKE THE NOISE. WHEN THE VEHICLE IN MOTION IT CHANGES GEARS AT A HIGHER RPM. I HAVE SENSORS THAT WERE OPERABLE BECAUSE OF THE TIMING CHAIN ISSUE.
NISSAN TRANSMISSION DESTROYED BY ENGINE COOLANT LEAK. HAD NO PROBLEM WITH TRANSMISSION UNTIL ONE DAY, SHIFTED INTO DRIVE AND TRANSMISSION WAS STUCK IN HIGHER GEAR. THOUGHT IT WAS ELECTRICAL. TURNED THE CAR OFF THEN BACK ON. WOULD NOT ENGAGE IN REVERSE, BUT FORWARD WAS BACK TO NORMAL. TOOK TO AAMCO TRANSMISSION REPAIR AND WAS TOL…
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NISSAN TRANSMISSION DESTROYED BY ENGINE COOLANT LEAK. HAD NO PROBLEM WITH TRANSMISSION UNTIL ONE DAY, SHIFTED INTO DRIVE AND TRANSMISSION WAS STUCK IN HIGHER GEAR. THOUGHT IT WAS ELECTRICAL. TURNED THE CAR OFF THEN BACK ON. WOULD NOT ENGAGE IN REVERSE, BUT FORWARD WAS BACK TO NORMAL. TOOK TO AAMCO TRANSMISSION REPAIR AND WAS TOLD THIS WAS A COMMON PROBLEM WITH NISSANS IN THAT THE DESIGN FLAW ALLOWS ENGINE COOLANT TO MIX WITH TRANSMISSION FLUID AND DESTROYS THE TRANSMISSION. COST TO REPLACE IS ESTIMATED AT $4100, CAN NOT OBTAIN A USED TRANSMISSION BECAUSE ALL THE SAME TRANSMISSIONS HAVE THE SAME PROBLEM WITH ENGINE COOLANT LEAKAGE. VEHICLE HAS 155K MILES, AND DID NOT HAVE ANY WARNING SIGNS OF TRANSMISSION PROBLEMS. NISSAN NEEDS TO BE RESPONSIBLE FOR THEIR DESIGN FLAW. THIS TRUCK WHICH WAS RUNNING FINE LAST WEEK, WILL NOW BE SOLD FOR SCRAP AT A JUNKYARD AS I CAN NOT AFFORD TO REPAIR FOR $4100. AAMCO TRANSMISSION SAID JUNK YARDS ARE FULL OF SAME NISSANS DUE TO OTHER OWNERS WITH THE SAME PROBLEM.
IN 2013 I RECEIVED A NOTICE OF CLASS ACTION ABOUT A NISSAN VEHICLES RELATED TO POSSIBLE RADIATOR FLUID LEAK INTO THE TRANSMISSION DUE A DEFECT THAT PERMITS CROSS-CONTAMINATION OF ENGINE COOLANT AND TRANSMISSION FLUID. IT DID NOT INCLUDE VEHICLES BEFORE IT HAPPENS. IN 2013, I WENT TO A AUTHORIZED NISSAN DEALER TO CHECK IF MY RADI…
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IN 2013 I RECEIVED A NOTICE OF CLASS ACTION ABOUT A NISSAN VEHICLES RELATED TO POSSIBLE RADIATOR FLUID LEAK INTO THE TRANSMISSION DUE A DEFECT THAT PERMITS CROSS-CONTAMINATION OF ENGINE COOLANT AND TRANSMISSION FLUID. IT DID NOT INCLUDE VEHICLES BEFORE IT HAPPENS. IN 2013, I WENT TO A AUTHORIZED NISSAN DEALER TO CHECK IF MY RADIATOR CAN BE AFFECTED BUT THEY TOLD ME THAT IN THAT MOMENT THE RADIATOR WAS WORKING WELL WITHOUT GIVEN ME THE OPTION OF REPLACING IT TO PREVENT DAMAGES. AT THE TIME I WAS UNDER THE WARRANTY LIMITS, LESS THAN 10 YEARS AND LESS THAN 100,000 MILES. NOW IN FEBRUARY 13, 2016 MY VEHICLE BEGAN TO HAVE PROBLEMS TO MOVE , HAD A HARSH SHIFT , IT SLOWED DOWN AND DID NOT DRIVE AT TIMES. I CLEARLY SAW A TRANSMISSION PROBLEM. I CALLED UNITED NISSAN SERVICE FOR A DIAGNOSE . THEY CHECK MY VEHICLE AND TOLD ME THAT MY RADIATOR LEAKED FLUID INTO THE TRANSMISSION DUE THE RADIATOR DEFECT. I COULDN'T UNDERSTAND WHY THIS CLASS ACTION DID NOT INCLUDE VEHICLES THAT WILL FACE THIS DAMAGE IN A FUTURE . IT DID NOT INCLUDE PREVENTION OF DAMAGES. NISSAN DID NOT RELEASED A RECALL FOR THE FAULTY RADIATOR. I KNOW I AM NOW OUTSIDE THE WARRANTY LIMITS, BUT AT THE TIME WHEN I VISITED NISSAN SERVICE TO PREVENT THIS NO ONE PROVIDED MY HELP OR INFORMATION THAT WOULD HELP IN PREVENT SUCH DAMAGE. THE PRICE FOR A NEW TRANSMISSION IS 6,000 DLLS. THE TOTAL COST OF REPAIR ALL GOES UP 9,000 DLLS. ALSO I RECEIVED A RUDE CUSTOMER SERVICE BY THE SERVICE AGENTS OF NISSAN SERVICE . NOW I HAVE TO COVER THESE COSTS BY MYSELF. MY SON WAS DRIVEN THE VEHICLE WHEN THIS HAPPEN. THE GOOD THING IS THAT THE FAILURE OCCURRED WHILE HE WAS DRIVEN ON THE FREEWAY MAKING IT SO DANGEROUS. WHAT WILL HAPPEN WITH PEOPLE LIKE US? THE LEGAL CASE WAS CLOSED IN 2012 BUT NISSAN STILL HAVING VEHICLES SUFFERING THIS THIS DAMAGE . THIS IS A NEGLIGENCE THAT PASS THE FINANCIAL BURDEN TO CONSUMERS.
MY TRUCK STARTED SHUDDERING EVERY ONCE IN A WHILE. EVENTUALLY IT WAS PAUSE WHEN CHANGING GEARS (WOULD NOT ACCELERATE AND WOULD LOSE SPEED), AND THEN IT BEGAN TO MAKE A CLANKING SOUND. TOOK IT TO A MECHANIC AND HE SAID ON THIS PARTICULAR MODEL THE COOLANT VIA A LEAK IN THE RADIATOR COMBINES WITH THE TRANSMISSION FLUID. REPAIR EST…
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MY TRUCK STARTED SHUDDERING EVERY ONCE IN A WHILE. EVENTUALLY IT WAS PAUSE WHEN CHANGING GEARS (WOULD NOT ACCELERATE AND WOULD LOSE SPEED), AND THEN IT BEGAN TO MAKE A CLANKING SOUND. TOOK IT TO A MECHANIC AND HE SAID ON THIS PARTICULAR MODEL THE COOLANT VIA A LEAK IN THE RADIATOR COMBINES WITH THE TRANSMISSION FLUID. REPAIR ESTIMATE IS $3,800 PLUS TAX! VEHICLE WAS IN MOTION AND ON CITY STREETS AND HIGHWAYS.... GENERALLY AT A SPEED OF 40MPH OR HIGHER. THE ISSUES BEGAN ABOUT A YEAR AGO AND THEN SLOWER PROGRESSED TO WORSE. WHEN IT STARTED IS A GUESSTIMATE.
TIJMING CHAIN FAULTY AND PULLIES
VEHICLE HAS SEVERE ELECTRICAL ISSUE WITH POSITION SENSORS ON CAMSHAFT AND CRANKSHAFT. VEHICLE ENGINE STALLS SUDDENLY. THIS IS A VERY DANGEROUS CONDITION AS VEHICLE WILL LOOSE BRAKING AND STEERING CONTROL AT HIGH SPEEDS OR IN A INCLINE, HILL ON OR OFF ROAD. NISSAN HAS FAULTY WIRING ON THESE SENSORS THAT CONTROL THE ENGINE POWE…
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VEHICLE HAS SEVERE ELECTRICAL ISSUE WITH POSITION SENSORS ON CAMSHAFT AND CRANKSHAFT. VEHICLE ENGINE STALLS SUDDENLY. THIS IS A VERY DANGEROUS CONDITION AS VEHICLE WILL LOOSE BRAKING AND STEERING CONTROL AT HIGH SPEEDS OR IN A INCLINE, HILL ON OR OFF ROAD. NISSAN HAS FAULTY WIRING ON THESE SENSORS THAT CONTROL THE ENGINE POWER, A KNOW PROBLEM THAT HAS NEVER BEEN RECALLED. OVER 100 PEOPLE HAVE SUFFERED INJURIES OR LOSS OF LIFE DUE TO THIS ISSUE. NISSAN DEALERSHIPS ARE AWARE OF PROBLEM AND SEVERAL FORUMS ONLINE INCLUDING NEWSPAPER ARTICLES OUTLINE THE ISSUE.
Official recalls
310V517000 · Engine And Engine Cooling
Oct 28, 2010
NISSAN IS RECALLING CERTAIN MODEL YEAR 2004-2006 ARMADA, TITAN, INFINITI QX56 AND MODEL YEAR 2005-2006 FRONTIER, PATHFINDER AND XTERRA VEHICLES. THE INTELLIGENT POWER DISTRIBUTION MODULE (IPDM) ASSEMBLY CONTAINS AN ENGINE CONTROL MODULE (ECM) RELAY THAT HAS A DIODE FOR ELECTRICAL CURRENT NOISE REDUCTION. THE ECM RELAY MAY ALLOW SILICON VAPOR TO FORM AND, OVER TIME, THE SILICON EVAPORATES FROM THE DIODE MOLDING WHICH CAUSES SILICON OXIDE TO DEVELOP ON THE ECM RELAY CONTACT DUE TO ARCING.
Consequence & remedy
Consequence: THIS COULD CAUSE ENGINE STALLING INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE ECM RELAY INSIDE THE IPDM ASSEMBLY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON DECEMBER 6, 2010. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
08V690000 · Air Bags:frontal
Dec 29, 2008
NISSAN IS RECALLING 242,720 MY 2005-2009 PATHFINDER, FRONTIER AND XTERRA VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. IN THOSE AREAS OF THE COUNTRY WHICH USE HEAVY CONCENTRATIONS OF ROAD SALT IN THE WINTER, A MIXTURE OF SNOW/WATER AND SALT CAN ENTER INTO THE FRONT CRASH ZONE SENSOR (CZS) HOUSING. IF THIS OCCURS, THE CZS MAY INTERNALLY RUST RESULTING IN A SIGNAL INTERRUPTION. IF THIS HAPPENS, THE RED AIR BAG WARNING LIGHT WILL ILLUMINATE TO ALERT THE VEHICLE OPERATOR.
Consequence & remedy
Consequence: THIS ISSUE COULD RESULT IN THE NON-DEPLOYMENT OF THE DRIVER AND PASSENGER FRONT AIR BAGS IN A CRASH, INCREASING THE RISK OF PERSONAL INJURY.
Remedy: DEALERS WILL REPLACE THE FRONT CZS WITH A REDESIGNED SENSOR. THE RECALL BEGAN ON JANUARY 26, 2009. OWNERS IN THE OTHER STATES WILL RECEIVE EXTENDED WARRANTY COVERAGE FOR THE SENSOR TO 10 YEARS. THESE OWNERS WILL BE NOTIFIED OF THE WARRANTY EXTENSION BY MAIL AND WILL RECEIVE A STICKER TO PLACE IN THEIR WARRANTY BOOKLET EXPLAINING THE EXTENDED WARRANTY COVERAGE. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
06V092000 · Fuel System, Gasoline:storage:tank Assembly:filler Pipe And Cap
Mar 30, 2006
ON CERTAIN KING CAB TRUCKS, IN A SEVERE SIDE IMPACT CRASH, THERE IS A POSSIBILITY THAT DEFORMATION OF THE VEHICLE'S BODY COULD CAUSE THE FUEL FILLER CAP TETHER TO BE STRETCHED TO THE POINT OF UNSCREWING THE FUEL FILLER CAP.
Consequence & remedy
Consequence: THIS MAY RESULT IN A FUEL SPILL WHICH IN THE PRESENCE OF AN IGNITION SOURCE COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE FUEL CAP TETHER PIN ASSEMBLY WITH A MODIFIED ONE FREE OF CHARGE. THE RECALL BEGAN ON APRIL 24, 2006. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1DP12004 · Transmission Failures
Opened Jun 11, 2012 · Closed Oct 22, 2016
Status: closed (inferred from source dates) · Power Train; Power Train:automatic Transmission; Power Train:automatic Transmission:control Module (tcm/pcm/tecm); Power Train:automatic Transmission:cooling Unit And Lines; Power Train:automatic Transmission:torque Converter
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Additional source detail variants (5)
Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train:automatic Transmission:cooling Unit And Lines
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train:automatic Transmission
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train:automatic Transmission:torque Converter
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.
Power Train
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject. Our report, documenting this review, is available in the document file for this defect petition.It will also be published in the Federal Register. Of the 2,505 referenced complaints, 638 relate to a potential hazard (unable to maintain speed, no motive power, engine stall) and 1,867 concern customer satisfaction issues including, but not limited to, repair cost, vehicle shudder and shake, and engine overheating.Taking into account the allocation of agency resources and priorities and the likelihood that additional investigation would result in a finding that an unreasonable risk to highway safety exists, we conclude that further investigation is not warranted and deny the petition.ODI Complaint ID numbers are referenced on the next page.