Radiator failure 1/7/2011 at 73,958 miles, causing transmission failure, repaired under warranty by Nissan dealer, then again failure at 1/15/2016 150,500 miles - same problem.

- East Brookfield, MA, USA

Vehicle jerks and stalls and even cuts off during driving. I was driving on the interstate and went to change lanes and the engine just shut off. I tried to pull to the side of the road quickly but I had no engine power. I coasted to the shoulder of the road and called my husband to pick me up. I had the vehicle towed to my mechanic and he advised us that the automatic transmission fluid had contaminated the anti-freeze and vice versa and that I'd need a new transmission and radiator installed for $5500. He also added that Nissan had just lost a class action lawsuit to repair the vehicles affected but the catch is that your vehicle can not have over 100,000 miles on it. From my research in the forums, the issue does not arise until the vehicle mileage exceeds 100,000, so we're basically screwed for repairs on our Nissan with 100,001 miles or more. I'm double screwed as I have 2 2006 Nissan's. my other vehicle is currently inoperable due to atf contamination.

- West Melbourne, FL, USA

The contact owns a 2006 Nissan Pathfinder. While driving approximately 60 mph, all the instrument panel warning indicators illuminated. The vehicle stalled and failed to restart. The vehicle was towed to the dealer where the transmission and radiator were replaced. The manufacturer was notified of the failure. The approximate failure mileage was 125,000. Updated 03/09/16

- Renton, WA, USA

The contact owns a 2006 Nissan Pathfinder. While driving 40 mph, an abnormal sound emitted from the vehicle. An independent mechanic diagnosed that the transmission fluid was mixing with the engine coolant. As a result, the transmission and radiator needed to be replaced. The manufacturer was made aware of the failure, but offered no assistance since the vehicle was not included in any recalls. The vehicle was not repaired. The failure mileage was 126,000.

- Des Moines, IA, USA

Coolant leaked into transmission causing car to not start and not usable.

- Hayward, CA, USA

At first I thought my heater was the problem. I took my truck down to the dealer for inspection, and a mixture of coolant and transmission fluid was noticed. The dealer told me I was going to need a new transmission, radiator, and hoses. They said all of that would cost me $8,000.

- San Carlos, CA, USA

Our 2006 Nissan Pathfinder was having issues where it would shutter heavily while trying to accelerate, the power would drop off and the car would rev high. After taking it to the local Nissan dealer, they found the cat converter bad and the plugs fouled. They fixed that and the car ran "better" but was not quite running perfect again. Several months later we were suspect of a similar issue as last time where the car would lag before shifting especially when we would step on it. So, we took it back to Nissan and this time they found the issue that thousands of people are having where the radiator cracks and leaks coolant into the transmission. After being quoted $5900 for the fix, I asked about this issue I've seen online and not until then did they look into it and see that Nissan put out an extended warranty on this matter. I still have to pay a $3000 deductible which is bs but it is better than $5900

- Tunkhannock, PA, USA

The contact owns a 2006 Nissan Pathfinder. The contact stated that while driving at 65 mph, the vehicle decelerated independently as the check engine warning light illuminated. The failure recurred three times. The vehicle was taken to the dealer where it was diagnosed that coolant from the radiator leaked into the transmission which caused the transmission to be severely corroded. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 113,000.

- Randolph, MA, USA

While driving on turnpike at 75mph transmission slipped gear started shuddering whole truck and lost speed. Attempted to step on gas to get to shoulder of road and rpms just went up but wheels did not move. Almost was hit by multiple vehicles. Attempted to manually shift vehicle to get it to shoulder and had vehicle towed. Transmission is junk due to coolant leaking.

- Standish, ME, USA

I bought this SUV brand new back in 2006, never had major problem till now. We just found out Nissan's radiators are a huge problem they leak into the transmission and that explains why our transmission died. While I drove on the freeway the transmission slipped. Luckily the car didn't stall after I pulled in the driveway. I brought it to the repair shop they said the coolant leaked in to the transmission. They told me that I needed to have the transmission replaced because it got coolant in it and damage the inners.

- Hayward, CA, USA

Transmission needs to be replaced due to radiator fluid leaking into transmission. Nissan had an agreement to help cover costs but it only covered vehicles with less the 100K miles.

- Bolingbrook, IL, USA

The contact owns a 2006 Nissan Pathfinder. While driving approximately 50 mph, the vehicle shook violently and the engine stalled. The vehicle was able to restart after four attempts. The failure recurred on one occasion. The vehicle was taken to a dealer where it was diagnosed that the radiator welding failed and was draining coolant into the transmission which needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 78,000. Updated 03/15/16; updated 3/29/18

- Polson, MT, USA

I have a Nissan Pathfinder with 88,000 miles on it. Somehow coolant leaked into my transmission causing severe damage. Nissan is telling me oh well since my warranty was up at 5yrs 60,000 miles. I've heard that this is a known problem with Nissan and that they aren't doing anything to help. Does anyone have any ideas"?" thanks!

- Encinitas, CA, USA

Brought my vehicle into the local Nissan dealership in 2013 for a basic service and oil change. The complaints about the radiator/transmission cooling system were well established. There was no documented information in the service visit file on my 2006 Pathfinder to show that an inspection for this known defect was done. This brings us today where my Pathfinder currently sits at the Nissan dealership in need of a new radiator and transmission. As a result of the defect, while driving my truck started to overheat and then the transmission dropped into 1st gear while going 50 mph. While in traffic with one of my children in the car, this caused the vehicle to rapidly decelerate. So now I have to decide to pay for this repair, that is done using the same parts with no guarantee it will not happen again. This is the third serious issue that I've had with this truck.

- Tallahassee, FL, USA

The contact owns a 2006 Nissan Pathfinder. While driving 5 mph, the accelerator pedal was depressed but the vehicle hesitated and jerked before moving forward. The failure recurred on numerous occasions. The vehicle was taken to a dealer where it was diagnosed that the transmission and the radiator needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 62,000.

- Lebanon, PA, USA

It was on Saturday Aug 8th, while on a family week end get away, while driving in stop and go traffic in the carpool lane of the freeway, the transmission started to slip and jump a couple of times.. I was pressing the gas pedal with no movemen, I didnt know what to do, so I turned it off and back on again and put it in 44 fearing for the safety of my family that was with me, I got it to move and pulled it over to center devider. I turned it off again and took it out of 4X4 and let it set for a few minutes. We were going to call aaa, but I decided to try it again, and was able to drive away safely. That was 2 weeks ago, I have only driven it around my house and haven't had that happen again. I am hesitating taking it to the dealer because I was just there a couple of months ago replacing the timing chain tensioner. $1850

- Riverside , CA, USA

The contact owns a 2006 Nissan Pathfinder. While the vehicle was stopped, it started to accelerate independently. The vehicle was taken to an independent mechanic where the mechanic stated that coolant from the radiator was leaking into the transmission. The mechanic also stated that the radiator and transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 156,000.

- Sylvania, GA, USA

I took my Pathfinder in to the local Nissan dealer for a check up--chugging at 35mph, check engine light sporadically goes on and off, gas gauge stopped functioning. Nissan ran the diagnostics and told me the check engine light is because I need to pay $500 to replace the fuel sensor. I believe this is a part that was previously recalled. I don't know if Nissan considers the fix once and done but vehicles driven in salt and sand winter conditions will need extra attention. The transmission trouble is something Nissan knows about but refuses to recall. I was told I needed to replace the radiator and transmission--over $5000. If Nissan knows about these problems, why must I, a now unhappy owner, pay for these repairs?

- St. Louis Park, MN, USA

Radiator has been leaking into the transmission which has caused it to fail.

- South Boston, MA, USA

My cars radiator cracked and leaked into the transmission. The mix of coolant and transmission fluid damaged the transmission and quite possibly damaged my engine. Nissan knows about the radiator because they extended the warranty on it. The repairs for this incident are high the Nissan dealer I took it to quoted me $4,591.43 to replace the transmission and the radiator and that is with the warranty they claim they have on it. The dealer also told me any other damage caused by this faulty radiator would not be covered and I would have to pay for the repairs to any other components as well they told they me might be an additional $2,000 so nearly $7,000. I had know choice but sell the car off as scrap as the repairs would cost more than the car itself. A failure of all these parts at once is a safety hazard to everyone.

- Alexandria, VA, USA