I was driving my car and it shifted into 4 wheel drive at a red light with no prompting. The car then was immediately pulled over and turned off. The car would not start following it being turned off. It was then towed to a mechanic shop where they discovered that the radiator had leaked fluid into the transmission, causing the coolant to mix with the transmission fluid and completely disabling the car.

- Vestavia , AL, USA

The contact owns a 2007 Nissan Xterra. The contact stated that while driving approximately 30 mph, the vehicle stalled without warning. The vehicle was towed to a local mechanic where a diagnostic was performed. The failure was located at the transmission. The transmission was replaced. The manufacturer was not made aware of the failure. The failure mileage was 90,000 and the approximate current mileage was 91,000. Updated 03/01/13

- Bellevue , NE, USA

2007 Nissan Xterra radiator failed and about a month later the transmission failed due to antifreeze in the transmission. The Nissan Xterra was slipping on the highway causing the vehicle to slow as traffic was approaching on all sides. The vehicle lost forward drive control.

- Berlin, CT, USA

Nissan unsafe failure parts transmission and radiators hi my name is [xxx] my story begins as a happy one, but soon turns out to be my worst nightmare back in November 2007. I bought my first car a 2007 Nissan Xterra from avondale Nissan brand new which is now paid off. It was a very nice vehicle, had really small issues with normal wear and tear and normal maintenance which I kept up on myself. Right now I'm attending asu for premed and I need my vehicle to get to school. The issue started when I was driving on the highway, all of sudden I heard a noise and the back end shuddered as if I was driving over rumble strips. I took it in on my next oil change to discover that the transmission fluid had leaked into the coolant, then I had the radiator replaced, then a couple months later my engine light came on and the same issue which I was previously having with the my transmission fluid leaking into the coolant began again. In addition to that incident, I was told from numerous dealerships including Nissan that the radiator was damaged and now the transmission was also damage. I then started googling the problem and to my surprise to find out that so many other Nissan owners were experiencing the same problem. This horrified me when I went to the dealership where I purchased it new in 2007. The service advisor in the service department told me this is a terrible problem because Nissan is aware of this horrible design flaw on Nissan's part and they're not doing anything to help their customers, he said that Nissan is not going to do a recall at all its just a defect. He also stated that to fix the transmission and get another radiator would cost $500 for the radiator and $5155 for transmission not including tax or labor. I will never in my life ever buy a Nissan again nor would I recommend someone to purchase it! I'm not getting any answers from them they are fully aware of this unsafe defect. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Avondale, AZ, USA

Transmission and radiator failure making it unsafe to drive, Nissan company is well aware of these issues and refuse to do a recall and refuse to let their customers to be aware of the issue. As for me I am pre-med and I need my vehicle to get to school and work I as caregiver for an elderly man and woman so not a very much of an income so I depend on my car about a month ago I was driving on the highway when I heard a noise at the back end shuddered as if I was driving over rumble strips I took it in on my next oil change.

- Avondale, AZ, USA

2007 Nissan Xterra power train/timing chain problem. The vehicle was purchased new and was regularly maintained. The repair is a major cost from $1600 to $2500 to repair it was slightly over the maintenance when problem discovered by Nissan on a regular service visit. A claim with Nissan Corp. Was made and initially denied after several months of not being able to drive the vehicle worried that the engine would go. I continued to fight the denial and comply with all their request to obtain records on all maintenance done to vehicle. They finally responded and only paid a portion of the repair. The repair cost was still an economic burden. The parts were replaced to my knowledge. I am very displeased with the outcome especially being a loyal customer for many years. I am truly disappointed with how Nissan treats their customers and will never purchase a Nissan vehicle again!

- Pemberton, NJ, USA

Noticed that the vehicle was shifting hard especially in overdrive. Soon after the vehicle overheated on 4/4/11. Added coolant to get to garage. Upon inspection found that there was coolant in the transmission. Had it towed to the dealer and they confirmed that there was a crack in the transmission cooler and it put coolant into the transmission. The radiator and transmission needed to be replaced at a cost of $7400. I called the dealer I purchased the vehicle from and they told me there was nothing they could do for me it was a Nissan issue. Called Nissan customer support filed a complaint. After reviewing my complaint they told me there was nothing they could do for me. Searched on line and found that there are many Nissan's from 2005 -2007 with this failure. Nissan is ignoring the issue. Contacted the attorney general's office and they are investigating. The vehicle is currently at a Nissan dealership and has been since 4/5/11. We feel that the vehicle is unsafe to drive.

- Kingfield, ME, USA

Battery died. After replacing the battery something happened to the transmission. The vehicle was "stuck" in 4th gear. Had to have the valve body replaced. The vehicle is 31/2 years old and the valve body was corroded. Had to be put on a waiting list for the part from the dealership. There has to be many of these cars having the same problem if there is a waiting list for the part.

- Clearfield, PA, USA

2007 Nissan Xterra radiator failed mixed anti-freeze with transmission fluid, transmission stopped working in middle of dangerous intersection no warning! $5000 to repair. Nissan and dealer say that there is nothing being done by Nissan to fix problem.

- Johnson, VT, USA

Transmission coolant line corrodes and ruins the transmission.

- Jacksonville, VT, USA