The contact owns a 2005 Nissan Xterra. While parked, the contact attempted to start the vehicle but the engine would not start. The vehicle was towed to the dealer for diagnostics. The technician stated that the radiator and transmission would have to be replaced due to coolant from the radiator leaking into the transmission, causing an electrical shortage. There was an investigation under NHTSA action number: DP12004 (power train:automatic transmission:cooling unit and lines power train:automatic transmission:torque converter power train:automatic transmission:control module (tcm, PCM)) that could have been related to the failure. The vehicle was not repaired. The approximate failure mileage was 104,324.

- Imperial, MO, USA

Transmission locked in one gear which caused dangerous circumstances on well traveled roads. Subsequently, it operated normally, but the problem recurred. The occurrences were intermittent, and if occurred on a highway in heavy traffic could have resulted in an accident and injuries. Nissan has admitted there is a problem/defect by extending the warranty to 80,000 miles. However, this defect affects vehicles beyond 80,000 and is a significant safety concern. I understand the defect has to do with a cooling system in the transmission which is prone to cracking resulting in the mixing of radiator fluid and transmission fluid, ultimately rendering the transmission inoperable.

- Kingston, NY, USA

Just as I was about to enter the 405 freeway in long beach, my Xterra would not accelerate. The garden grove Nissan dealer said it was due to a leak in the radiator that caused the transmission to give out. I was charged $5,000 to repair. I filed a claim with the dealer and that's when I first learned that I had been given an extra 20,000 miles warranty back when my Xterra only had 60,000 miles. I was never notified of the extended warranty and I've been taking my Xterra to the dealer for all maintenance since I bought it from the dealer.

- Santa Ana, CA, USA

Coolant leaking into the transmission ruined both the radiator and transmission.

- Grand Bay, AL, USA

After driving to a remote fair ground facility, the transmission failed due to a leak allowing coolant to mix with the transmission fluid. After leaving the driver and passenger stranded waiting for help, the passenger lost consciousness due to high outdoor temperatures and lack of near by facilities. Paramedics were called to the scene.

- Flagstaff, AZ, USA

The contact owns a 2005 Nissan Xterra. The contact was driving 65 mph when the vehicle started shaking violently. The contact drove the vehicle to the dealer who inspected the failure. The dealer advised the contact that radiator fluids leaked into the transmission, causing a transmission failure. Both the radiator and the transmission would need replacing at the contact's expense of $7000. The manufacturer was notified who offered no assistance. The vehicle was not repaired. The failure mileage was 86,000.

- Puyllaup, WA, USA

Brought a used 2005 Nissan Xterra from a dealer in eugene Oregon on October 13, 2011. On July 31, 2012 the radiator leaked fluid into the transmission disabling the vehicle. Took it to the deals where I have an extended warranty ( 12 months or 12,000 miles) only to be told that the radiator caused the problem to the transmission, which meant both are not covered by the warranty.

- Eugene, OR, USA

My 2005 Nissan Xterra started having some problems early in July. On or about July 5 I was pulling onto highway 30 in montgomery Illinois. There was oncoming traffic. I pushed the gas and proceeded to merge on to the highway. The car moved very slowly almost causing an accident. I pulled over out of traffic and rested car for approx 5min. When I began to accelerate again the car performed normally. I took to a mechanic who stated that the radiator fluids had mixed with the transmission fluids causing the transmission to slip and fail. After hearing this I went online and observed that over 500 people have also experienced the same problem and that it is a defect in the manufacturing of all 2005-2010 trucks and SUV's. I have asked Nissan to repair my car at their expense since it is a problem they knew about. They first stated they did not send me the original info on this problem because they did not know I owned the car. This is not true. They had previously sent me information about a tow bar issue/recall and a Nissan dealer in san jose ca fixed that problem. I believe that Nissan intentionally did not inform owners because they wanted the mileage to exceed what they were offering (80,000). Had I known I would have had my truck looked at long before the mileage expired. What happened to me could happen to a family and if they were to pull into ongoing traffic an accident would certainly occur. This is very dangerous and Nissan needs to do the right thing. I appreciate you opening an investigation on this and hope you get results before someone dies.

- Montgomery, IL, USA

Traveling at 65 mph, transmission started to shack terribly and was almost uncontrollable. This was a direct failure of a leak in the radiator that allowed radiator fluid to leak into the transmission and cause the transmission to fail.

- Puyallup, WA, USA

Transmission damage attributed to contamination by engine coolant. The source of the contamination is a cracked atf line that runs through an engine coolant chamber in the radiator.

- Westlake, CA, USA

Failure of radiator causes engine coolant to mix with transmission fluid causing transmission destruction. While driving on the highway, vehicle shakes violently and shifts hard during slower driving. Happens to be a very common problem I was un aware of, until it was too late. Dealer service dept advised me it was a $8,000 "known issue" and instructed me to contact Nissan about helping with repairs.

- Long Beach, CA, USA

Daughter coming to intersection at 20 mph. Failed in intersection and was able to coast out of intersection. Later found failure due to water in transmission. Nissan has a class action suit on this issue- which I joined.

- Redlands, CA, USA

After proceeding from a traffic light at about 25-30mph, the vehicle's transmission suddenly just disengaged. I managed to pull the vehicle on the side of the road, stop and placed it in park. Then I placed it in drive and stepped on the gas but it would not go forward. I then placed it in reverse, backed up a few feet and again placed it in drive. It did engage and I proceeded towards home at a speed of no more then 10-15mph. I had to do the pull over, reverse to drive exchange numerous times before I made it to my destination. Once there, I placed the vehicle in park, waited a few minutes, placed it in drive and it would not engage.

- Baltimore, MD, USA

The contact owns a 2005 Nissan Xterra. The contact stated that while driving 75, he noticed that the transmission failred and the vehicle stopped accelerating. The contact was able to successfully coast to the shoulder of the road. The vehicle fucntioned as normal upon restart. The vehicle was then taken to a dealer for a diagnosis. They stated that they needed to replace the transmission. The manufacturer was contacted and offered no assistance. The failure and the current mileages were 112,000.

- Saratoga Springs , UT, USA

The automatic transmission cooling line that runs through the radiator failed and allowed engine coolant to mix with the transmission fluid, destroying the transmission. The estimated cost to repair was $6800, greatly exceeding the value of the vehicle. Nissan declined to offer any assistance despite the wide spread knowledge that this is a design flaw and not a normal "wear and tear" failure.

- Crofton, MD, USA

Transmission cooler leaked into radiator, fouled cooling system with transmission fluid, also fouled transmission with coolant. This caused vibration in the transmission, loss of acceleration, check engine light was activated for a clutch solenoid switch, and unknown possible damage to the transmission.

- Joliet, IL, USA

Radiator failure causes transmission and engine coolant to mix causing catastrophic transmission failure. Nissan knows about this problem but has decided to turn their backs on their responsibilities and hope fending off class action lawsuits will be less expensive than fixing the issues they have caused. This is ignorant and arrogant on their part. Not only will this hurt those of us who are scraping by, but it will hurt Nissan in the long run, as nobody who is experiencing what I and many others are going through currently through will ever, ever but their products again. I submit that the president of Nissan usa be forced to attempt to drive my Xterra to and from work or school with his family. When he about causes a wreck or endangers his family, maybe he will see then the fatal errors of his faulty money hungry calculations. This is absolutely ridiculous that our great country hasn't forced these people to do the right thing, since they obviously cannot do it on their own.

- Tulsa, OK, USA

The contact owns a 2005 Nissan Xterra. The contact was driving approximately 35 mph and approaching a stop sign at an intersection. After stopping, the contact accelerated from a complete stop and there was severe hesitation and the gears began to slip. The failure progressed over a period of time. The vehicle was taken to an independent auto shop for diagnosis. The technician stated that the transmission and radiator would need to be replaced. The vehicle had not been repaired. There was currently an open investigation under NHTSA action number DP12004 (power train:automatic transmission:control module tcm, PCM). The manufacturer was not notified of the failure. The approximate failure mileage was 124,000. The VIN was unavailable.

- North St. Paul , MN, USA

Transmission failed to shift and made loud noises while driving. Caused the car to shake but did not lose control. Failed part in radiator allowed antifreeze into transmission and transmission fluid into radiator. Complete failure of radiator and transmission could have occurred on highway at speed. Know issue from Nissan who did nothing to communicate to vehicle owners on risks or precautions to take as well as no ownership for fixing this.

- Lawrence, KS, USA

The contact owns a 2005 Nissan Xterra. The contact stated that the vehicle would not start. The vehicle was towed to the dealer for diagnostics where the technician advised that the valve body would have to be replaced because the radiator was cracked and flooded the valve body. The vehicle was repaired but the failure recurred afterward. The vehicle was not further repaired. The approximate failure mileage was 130,000.

- Sun City, CA, USA