Radiator/ transmission failed causing breakdown radiator was affected as well as when the interior components of the radiators (internal transmission coolers) broke down allowing coolant to mix with the transmission fluid. As a result of the contamination, the transmission and other drive train components were damaged and required replacement.

- Visalia , CA, USA

We drove our 2006 Nissan Pathfinder and parked it in the morning. When we attempted to start it that afternoon, it would not start and had to be towed. The Nissan dealership did a diagnostic test and informed us that the radiator had leaked into the transmission and both were ruined and had to be replaced. The estimate for repair was $8,719. We contacted Nissan corporate in Tennessee to file a complaint only to be told that they were aware of this problem with 05, 06 and 07 Nissan, they had increased the manufacturer's warranty to 80,000 miles, and were not able to help me in any way. My vehicle had over 81,000 miles on it when I bought it. This problem should have been addressed before they sold me the vehicle. I paid $2,000 for an extended warranty and $600 for gap insurance, neither of which will help in any way. I still owe $14,000 on the car. Nissan should do a recall for everyone's benefit. They should fix my vehicle at no charge. They knew about the problem.

- Chesapeake, VA, USA

The contact owns a 2006 Nissan Pathfinder. The contact stated that while driving approximately 35 mph the vehicle suddenly stalled. The contact noticed the fuel tank was empty. After fueling the vehicle the contact attempted to accelerate but the vehicle failed to accelerate. The vehicle was towed to the dealer for diagnostic testing. The technician stated the radiator had leaked water into the transmission causing the transmission to fail. As a result, the transmission needed to be replaced. There was an investigation under NHTSA action number: DP12004 (power train: Automatic transmission: Torque converter power train: Automatic transmission: Cooling unit and lines power train: Automatic transmission: Control module (tcm, PCM)) that may be related to the failure. The vehicle was not repaired. The VIN was not available. The approximate failure mileage was 95,000.

- Jacksonville, FL, USA

Vehicle engine started skipping while in motion, engine temperature went up to overheated and speed automatically reduced itself to no more than 35mph on the road, caused traffic to avoid vehicle from hitting in the rear end. Had to drive small roads to get home. Nissan service fixed coolant pump but we found out later this was not the issue as less than 6 months later the engine overheated again, only this time the radiator leaked coolant into the transmission fluid and ruined the entire transmission. We find out that Nissan has hundreds or thousands of such incidents and have not issued a recall. Our cost to repair is $8,700 for a 6 year old vehicle with less than 100,000 miles on it.

- Suwanee, GA, USA

Major issues with my 2006 Nissan Pathfinder. Intermix with coolant and transmission fluid. The Nissan dealership knew after a few moments from lifting my hood. The mechanic explained it would cost over $1500 to replace the radiator and flush the transmission and advised me to come back after 10K miles. After having the radiator ($800) replaced I was on the highway for less than a mile and my rpms were revving high when I accelerated and the truck was obviously stuck in gear. Took Pathfinder back (two days) to mechanic and found the radiator contaminated once again and needing a new transmission which will cost $2500 that I don't have and I can't afford a new vehicle. I'm making payments on a car I can't drive. My husband is driving a 2005 Altima which is having similar problems and just haven't broken down complete. Nissan should recognized this issue and address asap.

- Alexandria, VA, USA

The contact owns a 2006 Nissan Pathfinder. The contact tried to start the vehicle but it failed to start. The vehicle was towed to a dealer for inspection where they confirmed the radiator leaked into the transmission and both components needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 134,139.

- Chesapeake, VA, USA

The 2006 Nissan Pathfinder has an issue with the radiator (coolant) leaking into the transmission. Truck began to shudder as if driving on rumble strips. Leaking fluid causes what first starts out as a rumble during shifting around 40 mph, then eventually leads to a seize of the transmission which can occur at any time. Should the transmission fail while in traffic it could cause a accident. The vehicle was taken to transmission shop and they advised that the transmission needed to be replaced. The failure and the current mileages were 103,800 miles.

- Patterson, NY, USA

My 2006 Nissan Pathfinder had severe transmission failure at 50mph caused by a manufacturer defect almost causing me to lose control.

- Modesto, CA, USA

I was driving my car on a busy major highway during rush hour traffic. My car sputtered and stalled unable to exceed 40 mph. I pulled over onto the shoulder and waited over an hour for the tow truck while cars zoomed past me at 60 mph. My car was diagnosed with a radiator that leaked antifreeze into transmission causing transmission failure. Nissan has several class action lawsuits against them for this problem. Updated IVOQ 10/24/12

- Saint Louis , MO, USA

I was driving my 2006 Nissan Pathfinder on a highway in light traffic at about 60 mph when I began to hear a high-pitched whine from the engine area. When I started to accelerate after stopping at a traffic light, the vehicle "bucked, " or lurched forward, and began to shake. There was no one in front of me at the time; if another vehicle had been in my path, I would have slammed into it. I was able to exit the highway without incident and drive/coast to a safe place where I immediately called for a tow truck. The repair shop at the Nissan dealership informed me that the radiator fluid had leaked into the transmission and caused the transmission to fail. Nissan apparently knew about this problem but did not suggest that the potentially defective radiator be replaced before it led to transmission failure.

- Lancaster, OH, USA

The contact owns a 2006 Nissan Pathfinder. The contact stated that while driving, the fuel gauge displayed an inaccurate fuel level reading, causing the vehicle to stall. The contact was unable to restart vehicle. The contact refueled the vehicle and was able to resolve the failure momentarily before recurring. The vehicle was taken to dealer who advised that the fuel sensor was defective. The vehicle was repaired by replacing the fuel sensor. In addition, the vehicle shifted out of gear abnormally. The dealer determined that the failure was caused by cooling fluid leaking into the radiator. The dealer then performed a transmission system flush and the failure was resolved. One year later after refueling the vehicle, the contact was unable to restart the vehicle. The vehicle was towed to dealer who inspected the vehicle and determined that the transmission module system had failed. The failure was due to a leak of cooling fluid into the radiator system. The vehicle was not repaired. The manufacturer was made aware of the failure however, no further assistance was offered. The failure mileage was 60,000. The approximate current mileage was 107,000.

- Fremont, CA, USA

I use this vehicle to commute to and from work. I currently serve in the U.S. military and must drive over causeways that are located over water to get to work. The vibrations from the failing transmission cause a major concern when going over these causeways. If the transmission were to fail going 50 mph it could cause a major accident possibly killing my family, me and possibly many more. Today I was taking the family out for dinner. On our way I drove over the causeway driving 55 and came to an exit. As I was exiting, the vehicle started jerking vigorously. Thankfully there was enough room to control the vehicle to bring it to a stop. Now the vehicle will not drive past 1st gear, so obviously I had to get it towed. Nissan must address the problem immediately before someone gets killed, but we all know that's exactly what they are waiting for.

- Cocoa Beach, FL, USA

Transmission has been acting up lately and went into a safety mode that I can only run on 3rd gear. My overdrive has been giving issues for a long time that it wouldn't lock fully so I have been running on fourth gear.

- Miami, FL, USA

Radiator leaked into automatic transmission, the neutral safety switch shorted out, but not until transmission was burnt up.

- Chesapeake, VA, USA

Transmission has completely failed due to leakage from the radiator crack. Rumbling started at about 130K miles, transmission starting slipping several weeks ago. We took it into the shop and paid $300 for a complete flush and replacement of fluid. It did no good - transmission is now not working at all.

- Alpine , CA, USA

I took my 2006 Nissan Pathfinder to a transmission shop because when I accelerated or slowed down it was giving a "bucking" feeling and my regular mechanic referred me to them. I was told that it was the faulty radiator and the transmission and radiator would need to be replaced for anywhere from $4800-$5500. Wow what a shock! this is ridiculous!!!

- Mesa, AZ, USA

While driving on a very bust highway towing our 3000 lb boat our SUV began to shutter and slow down swiftly causing traffic to swerve dangerously around our boat and car and potentially cause a major pile up. Apparently, the defect in the radiator and transmission lines caused the fluids to mix, overheating and damaging our transmission. We were unaware of this potential problem since we bought this car in a private sale 2 weeks prior to this incident. Luckily a crisis was averted, however it had the potential for a catastrophic consequences because the vehicle slowed down without touching brakes therefore not signaling to following vehicles that we were indeed slowing rapidly.

- Matthews , NC, USA

This began intermittently showing problems on the highway, during acceleration (after letting off the gas pedal to slow) the car would start to shake slightly and lose power before again running smoothly in May 2011. Later it started to do it at slower speeds during acceleration. Then it would sometimes have one or two clunks during acceleration, before again running smoothly. We took our car again to our mechanic in May 2012, and found that the radiator had been leaking, then gushed into the transmission. We replaced the radiator, and flushed the transmission to help fix the issues. The issues still continue today, although we rarely drive the car and can not afford to purchase an new transmission.

- Concord, CA, USA

I took my Nissan Pathfinder on 3 different occasions for the same problem and Nissan is fully aware of the problem.1st visit 11/29/2011, 2nd visit 3/12/2012, 3rd visit 6/11/2012 intermix with coolant and tranny fluid, replaced radiator $800, told me to come back and test fluids after 1000 miles, same issue, flushed out the tran fluid $250, T old me to come back after 1000 miles to test fluid, same problem. Paid $600 to clean out transmission pan and whatever bs they told me, now rpms are revving high when I try to take off, and I am at risk for stalling or transmission failing in the middle of intersection or highway. My wife and I are expecting our 1st child in January and I do not feel safe bringing our newborn in this vehicle and putting her life at risk. I called Nissan Consumer Affairs, and lodged a complaint then another rep called me back and said I do not qualify for financial assistance to repair my vehicle because I have 98K on my vehicle and the extended warranty they offered was up to 80K. Regardless there are many Pathfinder owners with this problem, she displayed no empathy, and kept saying the same thing, "I understand your frustration, but we cannot help you"....unbelievable!! vehicle has 98K and it's paid off. Don't want a new vehicle, and want Nissan to take responsibility for this issue and for everyone who has this problem!

- Fishers, IN, USA

Going 70 mph the vehicle started shaking real bad the RPM gauge was going nuts. Brought the vehicle to a stop then tried to start it again the vehicle jumped uncontrollably. Parked it and had it picked up by a towtruck. Was diagnosed with a faulty transmission and radiator. Faulty valve on radiator contaminated transmission. I am so glad that me and my daughter were ok this was very scary.

- Wills Point, TX, USA