IllustrationDRIVING DOWN THE ROAD, VEHICLE RPM WENT UP AS THE SPEED DECEASE. I PLACE THE VEHICLE IN THE NEXT LOWER GEAR TO GET TO MY LOCATION. CHECK THE RADIATOR LATER AND IT HAS A OILY CREAMY THICK MIXTURE OF RADIATOR COOLANT AND TRANSMISSION FLUID.
2006 Nissan Xterra
Owner reports · Recalls · Investigations
More warning signs than most Xterra years
Owner complaints for the 2006 Nissan Xterra are substantially higher than the model-year median of 78.
About this comparison →How this year compares
Owner complaints by model year
Compare all Xterra 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
380–25K
13625–50K
14750–75K
14775–100K
191100–150K
61150K+
720 reports with mileage · 60 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 268 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 237 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.
12 crash reports3 fire reports11 injury reports
Power Train complaints
268 reportsMY TRANSMISSION FAILED BE CAUSE OF WATER ENTERING THROUGH THE COOLING SYSTEM ACCOUNT IT IS CONNECTED TO RADIATOR THIS HAS BEEN A PROBLEM WITH THIS VEHICLE FOR SOME TIME. *TR
TRANSMISSION, RADIATOR PROBLEMS. CAR IS A LEMON. *TR
I WAS ON MY WAY BACK FROM THE MALL WHEN I HEARD MY FAN/BELT START TO SQUEAL. NOT THINKING ANYTHING OF IT I KEPT ON DRIVING NEXT THING I KNOW I'M PRESSING HARDER ON MY GAS PEDDLE JUST TO GO FASTER. MY RPMS WHERE GOING TO HIGH AND I WAS ONLY GOING 65. I WAS ON THE HIGH WHEN THIS HAPPEN SO I DIDN'T NOTICE TILL I HAD TO GO UP A BRI…
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I WAS ON MY WAY BACK FROM THE MALL WHEN I HEARD MY FAN/BELT START TO SQUEAL. NOT THINKING ANYTHING OF IT I KEPT ON DRIVING NEXT THING I KNOW I'M PRESSING HARDER ON MY GAS PEDDLE JUST TO GO FASTER. MY RPMS WHERE GOING TO HIGH AND I WAS ONLY GOING 65. I WAS ON THE HIGH WHEN THIS HAPPEN SO I DIDN'T NOTICE TILL I HAD TO GO UP A BRIDGE AND THAT'S WHEN I REALLY NOTICE MY ENGINE STRUGGLING TO GET POWER, IT SOUNDED LIKE IT WAS DOING A LOT WHEN IT REALLY WASN'T. I KNEW I HAD TO GO TO THE MECHANIC TO GET IT LOOKED AT THEY TOLD ME IT WAS A LOSE BOLT. NEXT THING I'M DRIVING HOME AND MY CAR WAS DOING THE SAME THING AGAIN BUT THIS TIME IT WASN'T GOING INTO GEAR IN DRIVE, SO I TRIED 3 GEAR STILL NOTHING SO I WENT TO 2 AND IT STUCK. I PARKED IT ON A SIDE STREET IN OCEAN CITY AND CALLED TRIP A AND HAD IT TOWED TO NISSAN OF ATLANTIC CITY TO SEE WHAT WAS WRONG. COUPLE DAYS LATER THEY CALLED AND TOLD ME MY RADIATOR FLUID LEAKED INTO MY TRANSMISSION AND MESSED ALL THE GEARS UP. AFTER HEARING THAT I LOOKED UP THAT PROBLEM ON XTERRAS APPARENTLY THIS IS A PRETTY COMMON OCCURRENCE ON THEM. I WAS NOT NOTIFIED OF SUCH PROBLEMS BY THE DEALER AND APPARENTLY NISSAN WANT REIMBURSE ME SO I'M OUT 7,500 BECAUSE MY NISSAN IS SITTING IN MY BACK YARD. *TR
RADIATOR, WHICH WAS RECALLED AND I WAS NEVER NOTIFIED ABOUT, CRACKED LEAKING COOLANT INTO THE TRANSMISSION ULTIMATELY CAUSING THE TRANSMISSION TO FAIL. *TR
I WAS DRIVING 15 MPH ON THE LOCAL STREET AND THE SLIP SENSOR LIGHT AND VEHICLE DYNAMIC CONTROL SENSOR LIGHT CAME ON, THEN THE TRANSMISSION STARTED TO MAKE A GRINDING NOISE. THAT'S IT, FINISHED AT 49K MILES DOA. VEHICLE WAS ALWAYS GARAGED. RADIATOR CRACKED LEAKED COOLANT INTO TRANSMISSION NICE TRUCK, SORRY TO HAVE TO LET N…
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I WAS DRIVING 15 MPH ON THE LOCAL STREET AND THE SLIP SENSOR LIGHT AND VEHICLE DYNAMIC CONTROL SENSOR LIGHT CAME ON, THEN THE TRANSMISSION STARTED TO MAKE A GRINDING NOISE. THAT'S IT, FINISHED AT 49K MILES DOA. VEHICLE WAS ALWAYS GARAGED. RADIATOR CRACKED LEAKED COOLANT INTO TRANSMISSION NICE TRUCK, SORRY TO HAVE TO LET NISSAN GO. TRUCK WAS LIKE NEW. *TR
WHEN IT TURNED COLD JAN/FEB 2105 OUR DAUGHTER TOLD US THE HEAT WAS NOT WORKING. BUT SHE KNEW WE DID NOT HAVE THE MONEY TO REPAIR SO WE DID NOT WORRY ABOUT IT. WE OWN A 2000 CHEVY TRUCK & THE HEAT HAS NOT WORKED FOR YEARS & WE JUST LIVE WITH IT.SO WE NEVER THOUGHT ABOUT THE RADIATOR/COOLANT BEING THE PROBLEM. THEN SOMETHING MA…
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WHEN IT TURNED COLD JAN/FEB 2105 OUR DAUGHTER TOLD US THE HEAT WAS NOT WORKING. BUT SHE KNEW WE DID NOT HAVE THE MONEY TO REPAIR SO WE DID NOT WORRY ABOUT IT. WE OWN A 2000 CHEVY TRUCK & THE HEAT HAS NOT WORKED FOR YEARS & WE JUST LIVE WITH IT.SO WE NEVER THOUGHT ABOUT THE RADIATOR/COOLANT BEING THE PROBLEM. THEN SOMETHING MAJOR HAPPENED-OUR DAUGHTER WAS DRIVING HOME FROM AUBURN AL TO OUR HOME IN OPELIKA AL & SHE CALLED US SAYING THE CAR WOULD NOT GO OVER 25-30 MPH. WE WERE OUT OF TOWN, IT WAS 10 PM AT NIGHT SO WE TOLD HER TO KEEP DRIVING AND GET HOME TO A SAFE PLACE (HER LIFE WAS MORE IMPORTANT THAN STOPPING ON THE SIDE OF THE ROAD--A YOUNG LADY ALL BY HERSELF) SHE GOT HOME, PARKED IT & WHEN WE RETURNED HOME WE TOOK IT TO A LOCAL REPAIR SHOP THAT WE TRUST. HE CALLED US THE NEXT DAY & SAID I HAVE DEVASTATING NEWS. HE TOLD US ABOUT THE SERVICE REPORT PUT OUT ON NISSAN XTERRAS IN REGARD TO THE MAJOR, WELL KNOWN TO NISSAN PROBLEM OF WHEN THE COOLANT/RADIATOR CRACKS BECAUSE OF A FAULTY WHEN IN MANUFACTURING RADIATOR IS PUT IN IT IS A KNOWN BY NISSAN BAD ONE. IT CRACKS & LEAKS INTO THE TRANSMISSION IN WHICH THE COOLANT MIXES WITH THE TRANSMISSION FLUID & CREATES A TOXIC HELL STEW THAT DESTROYS THE TRANSMISSION. HE SAID YOUR CAR IS WORTH $5,000 BUT THE COST TO REPAIR IS $7,000. I CALLED NISSAN THEY TOLD ME I HAD TO TAKE IT TO A NISSAN DEALER FOR THEIR DIAGNOSIS AND THE DIAGNOSIS IS THE SAME. MY HUSBAND IS VERY, VERY SICK AND WE HAVE HUGE MEDICAL, PHARMACY, HOSPITAL BILLS AND I HAVE HAD BREAST CANCER WITH CHEMO THAT HAS CAUSED AN AUTOIMMUNE DISORDER (ALMOST LOST MY LEFT EYE) AND OUR 15 YEAR-OLD DAUGHTER GOES TO CHILDREN'S HOSPITAL IN BIRMINGHAM AL FOR RHEUMATOID ARTHRITIS. WE THOUGHT WE WERE BUYING A VERY DEPENDABLE CAR FOR $14,000 ONLY 3 1/2 YEARS AGO AND NOW IT IS 4500 POUNDS OF JUNK METAL. IF NISSAN HAD TOLD US ABOUT THE PROBLEM, WE COULD HAVE BEEN PROACTIVE. *TR
THE XTERRA BEGAN OVERHEATING AND DRIVING IN AN UNSAFE MANNER AT HIGHWAY SPEEDS. DIAGNOSIS AT A NISSAN DEALER WAS A FAILED COOLER LINE ALLOWED COOLANT IN THE RADIATOR AND THAT BOTH THE RADIATOR AND TRANSMISSION WOULD HAVE TO BE REPLACED AT A COST OF $5800. THERE WAS NO PRIOR WARNING TO THE FAILURE. THE VEHICLE IS JUST OUTSIDE OF …
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THE XTERRA BEGAN OVERHEATING AND DRIVING IN AN UNSAFE MANNER AT HIGHWAY SPEEDS. DIAGNOSIS AT A NISSAN DEALER WAS A FAILED COOLER LINE ALLOWED COOLANT IN THE RADIATOR AND THAT BOTH THE RADIATOR AND TRANSMISSION WOULD HAVE TO BE REPLACED AT A COST OF $5800. THERE WAS NO PRIOR WARNING TO THE FAILURE. THE VEHICLE IS JUST OUTSIDE OF AN EXTENDED 10K WARRANTY/$3000 COPAY NISSAN OFFERED AS A RESULT OF A CLASS ACTION LAWSUIT FOR THIS ISSUE. *TR
DEFECTIVE RADIATOR LEAKED ENGINE COOLANT INTO AUTOMATIC TRANSMISSION FLUID (ATF), CAUSING CROSS-CONTAMINATION OF FLUIDS THAT WILL RUIN THE RE5R05A TRANSMISSION. THE ENGINE COOLANT WATER CONTAMINATION CAN SHORT-CIRCUIT THE LOW CURRENT ELECTRONIC COMPUTER LOCATED ON THE VALVE BODY. THIS TRANSMISSION WAS USED IN XTERRA; FRONTIER; P…
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DEFECTIVE RADIATOR LEAKED ENGINE COOLANT INTO AUTOMATIC TRANSMISSION FLUID (ATF), CAUSING CROSS-CONTAMINATION OF FLUIDS THAT WILL RUIN THE RE5R05A TRANSMISSION. THE ENGINE COOLANT WATER CONTAMINATION CAN SHORT-CIRCUIT THE LOW CURRENT ELECTRONIC COMPUTER LOCATED ON THE VALVE BODY. THIS TRANSMISSION WAS USED IN XTERRA; FRONTIER; PATHFINDER AND ARMADA VEHICLES MANUFACTURED BETWEEN 2005 AND 2010. FIXING THE RADIATOR AND REPLACING THE CONTAMINATED FLUID WITH FRESH FLUID DOES NOT ALLEVIATE THE PROBLEM, AS THE TRANSMISSION COMPUTER HAS BEEN PERMANENTLY DAMAGED. THE ONLY WAY TO FIX A DAMAGED TRANSMISSION COMPUTER IS TO REPLACE IT WITH A NEW ONE, AND THEY ARE ONLY AVAILABLE FROM NISSAN AS PART OF A NEW VALVE BODY ASSEMBLY. (HTTP://WWW.TOPTRANSMISSIONS.COM/NISSAN-PATHFINDER-XTERRA-ARMADA) NUMEROUS CONSUMER REPORTS ONLINE SHOW THAT THE VEHICLE CAN SUDDENLY LOSE POWER, OR EVEN LOCK UP THE DRIVING WHEELS WHILE DRIVING THE VEHICLE IN TRAFFIC; THEREFORE, THIS IS A SERIOUS SAFETY DEFECT ISSUE. SUBURBAN TRANSMISSIONS OF GAITHERSBURG, MD 20878 (PH. 301-362-4040 OR 800-353-3477) REPORTS THAT: "FOR MOST TRUCKS AND SUVS, FIXING THE RADIATOR PROBLEM AND REPLACING THE TRANSMISSION FLUID MIGHT CORRECT THIS PROBLEM. HOWEVER, ON THE NISSAN PATHFINDER AND XTERRA AND OTHER MODELS THAT USE THE RE5R05A TRANSMISSION?(W)E ALSO RECOMMEND (ALONG WITH RADIATOR & TRANSMISSION REPLACEMENT) BYPASSING THE RADIATOR WITH AN EXTERNAL TRANSMISSION COOLER TO PREVENT THIS FROM HAPPENING AGAIN AS REPLACING THE RADIATOR ISSUE IS LIKELY TO HAPPEN AGAIN." [WEB SOURCE: LINK SHOWN ABOVE.] *TR
RADIATOR COOLANT LEAKED INTO TRANSMISSION FLUID AND RUINED THE TRANSMISSION. KNOWN 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.
10V075000 · Fuel System, Gasoline:storage:auxillary Tank
Mar 3, 2010
NISSAN IS RECALLING CERTAIN MODEL YEAR 2006 AND MODEL YEAR 2008 FRONTIER, XTERRA AND PATHFINDER VEHICLES. THE MOLDED FUEL TANK SHELLS CAN DEFORM, CAUSING THE FUEL SENDER FLOAT ARM TO CONTACT AN EMBOSSMENT MOLDED INTO THE TANK SHELL CAUSING THE INSTRUMENT PANEL FUEL GAUGE TO SHOW THAT THE VEHICLE HAS APPROXIMATELY ONE QUARTER TANK WHEN THE FUEL TANK IS EMPTY.
Consequence & remedy
Consequence: THIS COULD CAUSE THE VEHICLE TO RUN OUT OF GAS AND STALL IN TRAFFIC, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE FUEL LEVEL SENDING UNIT INSIDE THE FUEL TANK WITH A NEW ONE THAT HAS A MODIFIED FLOAT ARM. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR BEFORE MARCH 22, 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.
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.