IllustrationRADIATOR COOLANT IS LEAKING INTO THE TRANSMISSION FLUID AND CAUSING IT TO OVERHEAT.
2006 Nissan Frontier
Owner reports · Recalls · Investigations
More warning signs than most Frontier years
Owner complaints for the 2006 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
320–25K
11025–50K
10750–75K
12075–100K
150100–150K
40150K+
559 reports with mileage · 58 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 220 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 174 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 82 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
13 crash reports2 fire reports10 injury reports
Power Train complaints
220 reportsWHILE DRIVING DOWN THE HIGHWAY AT 60 MPH, MY 2006 NISSAN FRONTIER SUDDENLY WAS RUNNING VERY ROUGH, IT DECELERATED AND I ONLY HAD LOW GEAR ENOUGH TO BARELY MAKE IT OFF THE HWY AND OUT OF THE WAY OF HIGH SPEED TRAFFIC. NO DASH/IDIOT LIGHTS CAME ON IDENTIFYING ANY PROBLEMS, THERE WAS NO WARNING AT ALL. TRUCK WAS TOWED TO NISSAN DE…
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WHILE DRIVING DOWN THE HIGHWAY AT 60 MPH, MY 2006 NISSAN FRONTIER SUDDENLY WAS RUNNING VERY ROUGH, IT DECELERATED AND I ONLY HAD LOW GEAR ENOUGH TO BARELY MAKE IT OFF THE HWY AND OUT OF THE WAY OF HIGH SPEED TRAFFIC. NO DASH/IDIOT LIGHTS CAME ON IDENTIFYING ANY PROBLEMS, THERE WAS NO WARNING AT ALL. TRUCK WAS TOWED TO NISSAN DEALERSHIP WHO SAID THE TRANSMISSION, AND RADIATOR, AND THERMOSTAT ALL NEEDED TO BE REPLACED!! THEY CHARGED US $5,500. THIS TRUCK ONLY HAD 135,000 MILES, AND WAS KEPT IN GREAT CONDITION, AT TIME OF IT'S FAILURE. NISSAN SHOULD BE ASHAMED OF MAKING THE CONSUMER BEAR THE COST OF NISSAN'S FAULTY PARTS!! THEY ARE FLAT OUT LUCKY IF NO ONE'S BEEN INJURED, OR KILLED DUE TO THIS FAILURE! HAD I BEEN ON THE INTERSTATE AS PLANNED THE VERY NEXT DAY, IN THIS TRUCK, I WONDER IF I'D BE HERE TODAY. THERE SHOULD BE NO QUESTION OR HESITATION THAT THIS "TRANSMISSION FAILURE" IS A SAFETY ISSUE AND NEEDS TO BE A FULL FLEDGED RECALL. AND WE SHOULD NOT HAVE TO FOOT THE BILL FOR NISSAN'S SCREW-UPS WITH OUR HARD EARNED MONEY. IT IS SIMPLY WRONG.
TL* THE CONTACT OWNS A 2006 NISSAN FRONTIER. WHILE DRIVING 40 MPH, THE VEHICLE SHIFTED OUT OF GEAR INDEPENDENTLY. THE VEHICLE DECELERATED AND STALLED. DURING THE FAILURE, THE CHECK ENGINE SOON LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE RADIATOR COOLANT TANK LEAKED FLUID ON…
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TL* THE CONTACT OWNS A 2006 NISSAN FRONTIER. WHILE DRIVING 40 MPH, THE VEHICLE SHIFTED OUT OF GEAR INDEPENDENTLY. THE VEHICLE DECELERATED AND STALLED. DURING THE FAILURE, THE CHECK ENGINE SOON LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE RADIATOR COOLANT TANK LEAKED FLUID ONTO THE TRANSMISSION. THE RADIATOR AND TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 154,000.
MY VEHICLES CONTAIN A DEFECTIVE RADIATOR COOLER TANK THAT RUPTURES AND FORCES COOLANT INTO THE TRANSMISSION THROUGH THE COOLER LINES. WHEN THE COOLANT MIXES WITH TRANSMISSION FLUID IT CREATES A FROTHY LIQUID THAT EATS VALVES, ERRODES SEALS AND CAUSES CORROSION. IT'S TOXIC, IRREVERSIBLE AND KILLED MY 5-SPEED AUTOMATIC TRANSMISSIO…
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MY VEHICLES CONTAIN A DEFECTIVE RADIATOR COOLER TANK THAT RUPTURES AND FORCES COOLANT INTO THE TRANSMISSION THROUGH THE COOLER LINES. WHEN THE COOLANT MIXES WITH TRANSMISSION FLUID IT CREATES A FROTHY LIQUID THAT EATS VALVES, ERRODES SEALS AND CAUSES CORROSION. IT'S TOXIC, IRREVERSIBLE AND KILLED MY 5-SPEED AUTOMATIC TRANSMISSION ON MY NISSAN FRONTIER 2006. NOW I HAVE TO PAY $3,700.00 FOR THE REPAIR OF THE TRANSMISSION. WHY NISSAN DID NOT REPAIR ALL THE CARS? THEY KNEW THAT MOST OF THE CAR WILL BRAKE PASS 100,000 MILES. LIKE MINE. ALSO WHEN YOU BUY A CAR FROM THE DEALER, THEY DO NOT TEL YOU THIS PROBLEM.
TL* THE CONTACT OWNS A 2006 NISSAN FRONTIER. WHILE DRIVING 50 MPH, THE VEHICLE STALLED IN THE MIDDLE OF THE HIGHWAY DUE TO TRANSMISSION FAILURE. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE COOLANT SYSTEM NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE…
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TL* THE CONTACT OWNS A 2006 NISSAN FRONTIER. WHILE DRIVING 50 MPH, THE VEHICLE STALLED IN THE MIDDLE OF THE HIGHWAY DUE TO TRANSMISSION FAILURE. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE COOLANT SYSTEM NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 96,000.
KNOWN QUALITY DEFECT OF NISSAN TRUCKS IN WHICH RADIATOR FLUID LEAKS INTO TRANSMISSION EVENTUALLY CAUSING COMPLETE FAILURE OF TRANSMISSION AND VEHICLE OPERATION. THIS FAILURE CAN HAPPEN AT ANYTIME AND CAN EFFECT ALL NISSAN TRUCKS MADE DURING THIS TIMEFRAME
THE VEHICLE HAS 86,700 MILES, I ALWAYS TOOK CARE OF IT, CHANGING OIL AT 3000 MILE INTERVALS, NEVER TOWED WITH IT, ETC., ETC., WHILE DRIVING THE TRANS SLIPPED OUT OF GEAR, LUCKILY I WAS ABLE TO PULL OVER AND NOBODY WAS IN BACK OF ME, WHEN I GOT IT TO THE DEALER, THEY SAID THE TIMING CHAIN AND GUIDES NEEDED REPLACEMENT PLUS THE RA…
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THE VEHICLE HAS 86,700 MILES, I ALWAYS TOOK CARE OF IT, CHANGING OIL AT 3000 MILE INTERVALS, NEVER TOWED WITH IT, ETC., ETC., WHILE DRIVING THE TRANS SLIPPED OUT OF GEAR, LUCKILY I WAS ABLE TO PULL OVER AND NOBODY WAS IN BACK OF ME, WHEN I GOT IT TO THE DEALER, THEY SAID THE TIMING CHAIN AND GUIDES NEEDED REPLACEMENT PLUS THE RADIATOR LEAKED AND THE TRANS COOLER CONTAMINATED THE TRANSMISSION AND THEY BOTH HAD TO BE REPLACED AND IT COST ME NEAR $5000.00 FOR TOTAL REPAIRS.
THE INTERNAL PORTION OF THE TRANSMISSION COOLER/WARMER INSIDE THE RADIATOR FAILED AND CONTAMINATED THE TRANSMISSION AND CAUSE IT TO FAIL. A KNOWN PROBLEM IN THIS VEHICLE.
TL* THE CONTACT OWNS A 2006 NISSAN FRONTIER. WHILE PERFORMING AN OIL CHANGE WITH A MECHANIC, IT WAS NOTICED THAT THE COOLING SYSTEM WAS CONTAMINATED FROM THE TRANSMISSION OIL. IN ADDITION, THE COOLING SYSTEM WAS FRACTURED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE…
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TL* THE CONTACT OWNS A 2006 NISSAN FRONTIER. WHILE PERFORMING AN OIL CHANGE WITH A MECHANIC, IT WAS NOTICED THAT THE COOLING SYSTEM WAS CONTAMINATED FROM THE TRANSMISSION OIL. IN ADDITION, THE COOLING SYSTEM WAS FRACTURED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 83,000.
COOLANT MIXING IN TRANSMISSION. NO WARNING, TRUCK JUST QUITE WORKING.
Official recalls
410V517000 · 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.
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
2DP26003 · Fuel Smell And Loss Of Motive Power
Opened Mar 30, 2026 · No close date supplied
Status: open (inferred from source dates) · Engine And Engine Cooling; Fuel System, Gasoline
The Office of Defects Investigation (ODI) received a Petition dated February 5, 2026, requesting an investigation into model year (MY) 2006 Nissan Frontier vehicles. The Petitioner alleges that the vehicle poses an imminent fire hazard due to “[a] powerful and persistent odor of raw gasoline” that he says “emanates from the vehicle” and “indicat[es] a breach in fuel system integrity.” He further alleges that the vehicles can experience sudden engine stalling “during startup and operation,” which he believes could cause collisions or loss of vehicle control. The Petitioner further alleges these symptoms are identical to conditions addressed in previous NHTSA recalls (10V-517, 07V-435, and 10V-075) and that the issues persist in the 2006 MY Nissan fleet despite these past actions. ODI is opening this Defect Petition to evaluate the Petitioner’s allegations and determine whether to grant or deny the Petition. The Petition can be viewed at NHTSA.gov under NHTSA Number 11718552.
Additional source detail variants (2)
Engine And Engine Cooling
The Office of Defects Investigation (ODI) received a Petition dated February 5, 2026, requesting an investigation into model year (MY) 2006 Nissan Frontier vehicles. The Petitioner alleges that the vehicle poses an imminent fire hazard due to “[a] powerful and persistent odor of raw gasoline” that he says “emanates from the vehicle” and “indicat[es] a breach in fuel system integrity.” He further alleges that the vehicles can experience sudden engine stalling “during startup and operation,” which he believes could cause collisions or loss of vehicle control. The Petitioner further alleges these symptoms are identical to conditions addressed in previous NHTSA recalls (10V-517, 07V-435, and 10V-075) and that the issues persist in the 2006 MY Nissan fleet despite these past actions. ODI is opening this Defect Petition to evaluate the Petitioner’s allegations and determine whether to grant or deny the Petition. The Petition can be viewed at NHTSA.gov under NHTSA Number 11718552.
Fuel System, Gasoline
The Office of Defects Investigation (ODI) received a Petition dated February 5, 2026, requesting an investigation into model year (MY) 2006 Nissan Frontier vehicles. The Petitioner alleges that the vehicle poses an imminent fire hazard due to “[a] powerful and persistent odor of raw gasoline” that he says “emanates from the vehicle” and “indicat[es] a breach in fuel system integrity.” He further alleges that the vehicles can experience sudden engine stalling “during startup and operation,” which he believes could cause collisions or loss of vehicle control. The Petitioner further alleges these symptoms are identical to conditions addressed in previous NHTSA recalls (10V-517, 07V-435, and 10V-075) and that the issues persist in the 2006 MY Nissan fleet despite these past actions. ODI is opening this Defect Petition to evaluate the Petitioner’s allegations and determine whether to grant or deny the Petition. The Petition can be viewed at NHTSA.gov under NHTSA Number 11718552.
DP12004 · 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.