Notes: The 2005-2007 Pathfinder appears to have a widespread defect where coolant leaks into the transmission, causing transmission failure around 90,000 miles. Repair costs are typically upwards of $3,500.

According to the New York Times & a class action lawsuit, the defect actually extends through 2010 model year. More info here.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
101,425 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Nissan Pathfinder cooling system problems

cooling system problem

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2006 Nissan Pathfinder Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #9

Feb 262012

Pathfinder 6-cyl

  • Automatic transmission
  • 92,200 miles


The contact owns a 2006 Nissan Pathfinder. The contact stated that while driving approximately 70 mph, the vehicle was resistant to acceleration. The vehicle was towed to the dealer where they advised the contact that coolant leaked into transmission and the fluid from the transmission leaked into the radiator. The radiator and the transmission would both need replacing. The vehicle was not repaired. The manufacturer was contacted and they offered no assistance. The failure and the current mileages were approximately 92,200. Updated 04/27/12

- Conway, AR, USA

problem #8

Mar 252011

Pathfinder 6-cyl

  • 89,080 miles
Nissan issued an extended warranty to replace faulty radiators and transmissions affected by these faulty radiators yet did not increase the warranty by the normal 12mo 12,000 mile instead they increased it to 96months and only 80,000 miles not 96,000 miles simply because most failures happen over 80,000 miles. They also claimed this was not a safety recall. When the radiator affects the transmission and the vehicle can stall during driving. How is this not a safety issue. This is from their letter informing consumers: "in vehicles equipped with automatic transmissions, a crack in the radiator assembly might occur at higher mileages leading to internal leakage of engine coolant. While the majority of vehicles will not experience this issue, Nissan is extending the warranty as it applies to the radiator assembly to demonstrate our commitment to stand behind our products and our customers. Nissan is extending your vehicle's new vehicle limited warranty as it applies to the radiator assembly and its component parts from 36 months/36,000 miles to 96 months/80,000 miles, including damage, repairs, replacement, and related towing resulting from this issue."a crack in the radiator is caused from thermal schock. Which Nissan knew about before installing the original radiator in my vehicle. I know this because they applied for a patent on Jan 24,2006 which was published Sept 2006 therefore they knowingly installed radiators that would undergo thermal shock ie crack. See the entire publication where they are filing for a patent recognizing the existing problematic radiators: Vehicle cooling system, publication number US20060196634, application number us/11/337437, assignees Nissan motor co ltd calsonic kansei corporation, inventors sato yousuke ishikawa takayuki iwasaki mitsuru filing date 24 Jan 2006publication date 07 Sep 2006. Make Nissan replace all defects.

- Sammamish, WA, USA

problem #7

Jul 212011


  • 104,000 miles
The contact owns a 2006 Nissan Pathfinder. The contact stated that while accelerating, the vehicle would stall once it reached a speed of 20 mph. The vehicle was taken to an authorized dealer, who stated that there was a hole in the radiator allowing radiator fluid to leak into the transmission. As a result, the transmission failed. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and current mileages were 104,000.

- Chicago, IL, USA

problem #6

Aug 132011

Pathfinder 6-cyl

  • 123,000 miles


Vehicle coming to a complete stop when the transmission control module failed due to an electronic short resulting from a radiator cooling line rupturing and flooding the transmission. This is a 2006 Nissan Pathfinder. I checked on line and was surprised (amazed) at the number of individuals who have had the same problem. There are even class action lawsuits pending related to Nissan knowingly aware of a defective radiator cooling line that breaks mixing into the transmission. My vehicle has been diagnosed by a Nissan dealership quoting $6,500 to replace the transmission and radiator. Nissan also extended the factory warranty to 80K miles when it was discovered that there was a defective part. Thank you. But, they never notified me that there was a problem. And, you don't know there is one until it fails and creates the problem. This is very dangerous. As the car will die if the module shorts out. It is the same module that tells the electronic ignition system that the vehicle is in park. My opinion, Nissan being aware of the defective part, in collusion with a vendor who provided the part. Is darn near not only fraud but conspiracy. I pinged several dealerships who openly advised of the defective part and the number of vehicles they have fixed. I asked the dealer how long to get a transmission. I was advised that the one required to fix the 2006 Nissan had 148 transmissions on back order. I should expect 4 to 6 weeks to get one. But, of course. My warranty is expired. I was also advised that the line that ruptures normally does between 90 and 110K miles. This is not only a safety issue. It is down right fraud and deceptive practices. Deceptive, because of not notifying owners. Fraud by knowingly having a defective part on a vehicle.

- Rockwall, TX, USA

problem #5

Jun 282011


  • 98,000 miles
The contact owns a 2006 Nissan Pathfinder. The contact stated that while attempting to accelerate from a stop, the vehicle violently jerked into gear. The check engine light also began to illuminate on the instrument panel. The vehicle was taken to an authorized dealer where the contact was informed that the radiator fluid was leaking into the transmission fluid, causing the failure. The contact was also advised to replace the transmission. The vehicle was then taken to an independent mechanic, who recommended the same repairs. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileages were 98,000.

- Daytona Beach, FL, USA

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problem #4

May 212011

Pathfinder 4WD 6-cyl

  • Automatic transmission
  • 86,000 miles
The contact owns a 2006 Nissan Pathfinder. The contact was driving approximately 35 mph approaching a traffic signal and when driving from the complete stop the transmission began to hesitate in a jerking motion. In addition, a significant amount of steam emitted from the radiator and the thermostat increased rapidly to hot which resulted in the engine overheating. The vehicle was maneuvered to the side of the road and towed to an authorized dealer for diagnostic testing. The technician detected that the radiator exhibited a crack and fluid leaked into the transmission which caused extensive damage. The transmission was completely destroyed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 86,000. The VIN was unavailable. Updated 07/20/11 updated 08/19/11

- Manahawkin , NJ, USA

problem #3

Mar 242008

Pathfinder 6-cyl

  • miles


2006 Nissan Pathfinder. Consumer requests that warranties be applicable to his vehicle the consumer stated the fuel sending unit was operating sporadically. The consumer was informed his vehicle was not included in the recall and the vehicle was over the warranty miles. The consumer received a warranty notification in the mail which stated his vehicle was included in 80,000 miles or less warranty. On March 24, 2008 the vehicle was taken to the dealer, because there was an odor of anti-freeze coming from the vehicle. They determined there was a leak in the radiator and it was fixed under warranty. In April 2008, the consumer took the vehicle to the dealer twice, because he continued to smell anti-freeze. They checked the vehicle both times, but did not find anything wrong with the radiator and could not find any leaks.

- Albuquerque, NM, USA

problem #2

Sep 142010


  • 71,500 miles
The contact owns a 2006 Nissan Pathfinder. While driving approximately 20 mph, the check engine light illuminated on the instrument panel. The contact stated the vehicle started vibrating and slowed down. The contact continued to drive home. The vehicle was taken to an auto parts store where a diagnostic test was performed; it was determined that a problem lay within the transmission. The vehicle was taken to a local transmission shop and they advised her that the transmission needed to be replaced and they turned the check engine light off. The vehicle was taken to an authorized dealer and where the contact was informed that the radiator and the transmission needed to be replaced. The vehicle had not been repaired. The approximate failure mileage was 71,500 and the current mileage was 72,000.

- Lancaster, PA, USA

problem #1

Feb 172010


  • 118,000 miles
The contact owns a 2006 Nissan Pathfinder. The contact stated she was driving at 50 mph when the heater and defroster failed. The windows had to remain open in order to keep the windows from fogging. In addition, the contact stated the vehicle would exhibit an unusual increase in engine rpms intermittently. The vehicle was inspected by a local mechanic who advised that radiator fluid leaked into the inner cooling system and into the transmission, causing the heater failure. The mechanic performed a transmission flush and replaced the transmission filter and radiator. Within five months, the transmission failed. Additionally, the fuel level gauge would sporadically read inaccurate fuel levels, causing her to run out of fuel twice without warning. The contact referenced NHTSA campaign id number: 10V075000 (fuel system, gasoline: Storage: Auxillary tank) but was unable to confirm if her vehicle was included with the recall. The vehicle was not further repaired. The failure and current mileages were approximately 118,000.

- Paron , AR, USA

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