The automatic transmission in the vehicle began to shift roughly. It was determined through the Nissan dealership that the radiator had a crack in, and radiator fluid was leaking into the transmission fluid. It is a design flaw.

- Saratoga Springs, UT, USA

As I was driving my 2007 Nissan Pathfinder (120,000, miles) through a busy intersection, I lost the ability to accelerate at all. After a very frightening couple of minutes I was able to steer the vehicle through and coast down a small incline to a nearby parking lot. After threedays our local mechanic determined that he was unable to fix the car, as he concluded that the ECM had failed. The vehicle was towed to the local Nissan dealership, who agreed that the problem was the ECM ($1014 repair). After three more days, they've now told us that the problem is not the ECM, but the fact that the radiator fluid has leaked into the transmission, destroying it. They are quoting a repair cost of $7500. I have been without a vehicle for over a week (renting a car became cost prohibitive), and now will spend the morning trying to find a more cost effective way to have the vehicle repaired. I've learned that this is a common issue of which Nissan is completely aware. The coolant leak/transmission failure is in fact a design defect in the vehicle. It is completely unacceptable that Nissan has not recalled these vehicles, or at the very least made the repair free for consumers regardless of vehicle mileage. I will never purchase another Nissan after this experience.

- Fairview, PA, USA

Radiator leaking into the transmission causing transmission damage, requiring a new radiator and transmission. Nissan knows this is an issue and has not notified customers to fix this prior to the part failing to prevent major damage. They extended the warranty to 85K miles for that part, but it needs to fail for them to cover the repair. I could have replaced the part for around $400 preventing the damage to the transmission, if Nissan would have told its customers. Now I have had to replace the transmission for $4000 and rent a car for one month at $800. The damage occurred when I was driving. Fortunately I was not on a busy highway when the transmission failed. It took so long to fix the transmission because parts are on back order to repair the transmission.

- Macon, GA, USA

The contact owns a 2007 Nissan Pathfinder. The contact stated that while driving approximately 45 mph, the transmission began to jerk with hesitation. The contact was able to continue driving. The vehicle was taken to a transmission shop for diagnosis, where the technician stated that radiator fluid leaked into the transmission which contributed to the failure. Also, the vehicle was taken to an authorized dealer, where they informed the contact that the transmission would need to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and was unable to provide assistance. The approximate failure mileage was 80,000.

- Snellville, GA, USA

The contact owns 2007 Nissan Pathfinder. The contact stated while driving, the vehicle was vibrating. He also mentioned that when he applied the accelerator pedal it would not engage immediately. The vehicle was taken to a local mechanic who diagnosed that the controller at the bottom of the radiator malfunctioned causing the transmission and coolant fluids to mix, as a result the radiator and transmission needed to be replaced. The manufacturer was made aware of the failure but did not offer any assistance since the warranty had expired. The vehicle was not repaired. The failure mileage was 86,000 and the current mileage was 86,992.

- Riverdale , GA, USA

My son was on his way to school when I received a call from him informing me that the Pathfinder was running hot. I advised him to pull over and wait until I arrive. When I let the hood up, I saw foam-like substances coming from the radiator. I had the vehicle towed to a mechanic shop to have it checked out. He informed me that the radiator had burst and leaked into the transmission. He changed the radiator and informed me that the transmission would stop working soon. Since than, I have changed the fluid 3 times @ $60 each time and the fluid is still pinkish. Now my transmission vibrates between 40 and 50 mph

- Ms, MS, USA

2007 Nissan Pathfinder. Cooler for transmission fluid resides in radiator. Radiator cracks, allowing engine coolant into transmission, destroying transmission.

- Pittsburgh, PA, USA

The contact owns a 2007 Nissan Pathfinder. The contact was driving 40 mph and attempting to accelerate but the vehicle would not respond. The vehicle was towed to a dealer for inspection where the contact was advise that a cross contamination of fluids had occurred in the vehicle and the transmission would need replacing. The dealer also advised that the failure was a known issue with the make and model vehicle. The vehicle was not repaired. The failure and current mileage was 80,200!!!!!

- Carrollton, TX, USA

The contact owns a 2007 Nissan Pathfinder. The contact was driving 40 mph and attempting to accelerate but the vehicle would not respond. The vehicle was towed to a dealer for inspection where the contact was advise that a cross contamination of fluids had occurred in the vehicle and the transmission would need replacing. The dealer also advised that the failure was a known issue with the make and model vehicle. The vehicle was not repaired. The failure and current mileage was 85,131.

- Mudlow, MA, USA

The contact owns a 2007 Nissan Pathfinder. The contact stated the vehicle would violently jerk and exhibited transmission failure. The dealer advised that the radiator fluid was leaking into the transmission fluid, causing the failure. The manufacturer advised there were no similar complaints for her year, make and model vehicle and would not assist. The contact was awaiting repairs to the radiator, at his expense. The VIN was not available. The failure and current mileages were approximately 118,000.

- Salisbury Mills , MD, USA