Doing general check up of my truck while performing an oil change noticed sludges in the radiator. Immediately performed bypass and drained the transmission to find it full of coolant. Fixed the issue myself after all the new parts arrived early enough to save the transmission. Honestly feel like Nissan owes everyone that had this issue a brand new truck no questions asked not right so many people have been affected by this issue and NHTSA somehow denied the claim according to their inspection do your job slam Nissan make them pay up.

- Murfreesboro, TN, USA

Drivers airbag light is on. Also transmission slipping anti-freeze mixing with transmission fluid.

- Rivrrside, RI, USA

Our 2007 Nissan Frontier's radiator leaked into our transmission and ruined our transmission at 110,000 miles. The vehicle started slipping and stuttering changing gears while we were driving and it then locked up when we pulled into a gas station and we could not shift the car into gear. The car had to be towed where the shop is telling us it needs a new transmission and radiator. When I called the Nissan dealership, they acknowledged this is a problem with this vehicle, but I am out of luck because it is no longer covered under warranty. The repair is over a $5200 fix. This is a direct result of a bad manufactured radiator, no fault of our own, and it has now ruined our truck.

- Marietta, GA, USA

Automatic transmission failure due to radiator failure and coolant contamination

- Atlanta, GA, USA

Radiator leaks into transmission causing failure. The transmission slipped into neutral entering 45 mph traffic on a 4 lane city street leaving me stranded and blocking traffic. It is currently in the shop and will cost 3000.00.

- Naples, FL, USA

Vehicle overheated while driving 70 mph on interstate, followed by automatic shift sputtering between 3 and 4th gears. Taken to mechanic and was notified that overheating was result of radiator failure, which caused radiator fluid to mix with transmission fluid. Repair cost $3400 to replace radiator and transmission. Air bag warning light illuminating 1 month after takata recall expired.

- Vero Beach, FL, USA

A known issue was never corrected with my vehicle causing the coolant to leak into the transmission. Nissan knew of the problem and never did anything to notify me. Yet they still send me letters asking if I would like to trade in my vehicle. My vehicle broke down in ther exact way they described it would and still, they were unwilling to help with repairs.

- Orange Park, FL, USA

Nissan recognized leak in radiator, leading to corrosion in transmission resulting in clunking shifting with automatic transmission, until transmission cannot shift by itself. Secret warranty bulletin put out but only to Nissan service centres and not shared with vehicles owners until to late for most. If they recalled or fixed the radiator, would not now need a new transmission repair for ~$7000. Truck will no longer go up hills unless one shifts as if it were manual

- Trail, Bc Canada, WA, USA

When driving my 2007 Nissan Frontier with a 191000 miles and truck starts to slow down, it would down shift rough. Made appt for next day with mechanic. It still being the same day I drove my son to the park and came to a stop, truck down shift was rough again and service engine soon light came on, pushed on gas and truck felt like it lost power. Got to park a block away, turned truck off and it never started again. Towed to a mechanic. $1100 later, mechanic says tow it to the Nissan dealer for a diagnostic because the modular inside the transmission is not working and they can tell what's wrong. I get it towed to Nissan dealer for $90 and $450(3hrs of labor to diagnose truck) later, Nissan said radiator fluid cross contaminated with transmission and ruined it. Also found transmission fluid and engine oil in radiator. So the radiator and transmission needs to be replaced for $6800. Nissan dealer sends me service coupons, flyers to trade the Frontier for newer a model to my house. They also text and call. In 2012 they settled to extend power train warranty because of this problem. Why wasn't I informed of preventative maintence on a known defect.

- Oakley, CA, USA

Takata recall. I went to go do a transmission flush. And mechanic says he cant flush it cause theres coolant mixed in with transmission fluid. Then engine light came on while driving home.

- Honolulu, HI, USA

A crack came in the radiator, forcing coolant into the transmission, damaging the transmission.

- Farmville, VA, USA

My transmisin stop working a dont no tha problem.

- Clifton, NJ, USA

While driving on a paved state highway at aprx 50mph, the vehicle slowed down and RPM's went up. Much like the transmission had downshifted. This is an automatic trans. Couldn't manually get it back to normal by downshifting or putting it into neutral. Service engine soon light was now lit. Pulled over, stopped and turned off engine. Under the hood there was no obvious sign of leaking, broken belts or smoke. Restarted the truck and drove home aprx 10 miles with no problem, but service engine soon light still on. Drove it the next day to autozone (5miles total) and showed codes P1774 and P0717. Researching the codes led me to all the transmission replacement problems due to a failure of the trans fluid cooler inside the radiator which mixes that oil with coolant and destroys components inside the transmission and requires replacement. Now I have to figure what to do facing a $6000 repair bill on a $10000 vehicle. This had me losing speed in a traffic situation that could have been dangerous and stranding us as an elderly couple with a disabled person in the Arizona desert. Money aside, it's pretty sad to find out that the NHTSA and Nissan have known about this problem for years and neither has taken any proactive steps to inform or warn the owners. Just a lot of collecting info and waiting for the vehicles to be carted off as junk and the problem swept under the rug. Thanks a lot for stalling for years and doing nothing. Safety doesn't just pertain to how many people died! not exactly the right thing to do!

- Mesa, AZ, USA

Transmission failure due to coolant mixing had to have the valve body replaced along with the tcmand new radiator. Vehicle cut completely off and would no longer start. After failing to excelerate past 40mph.

- Tampa, FL, USA

Radiator leak resulted in replacing radiator and damaged transmission

- Reno, NV, USA

Defective radiator hose caused coolant fluid to seep into the transmission, damaging it entirely. Cost of repairs were $4200. Nissan neglected to notify owners of defective part and the recall for 2005-2010 models. Over 2000 complaints were filed before Nissan took corrective action, which included extended warranty to 100,000 miles. However, mechanical issues will not manifest until well over 100,000 miles thus absolving Nissan from any responsibility or ownership.

- Castle Rock, CO, USA

Transmission radiator contamination. Loss acceleration on hi way.

- Glenshaw, PA, USA

The contact owns a 2007 Nissan Frontier. After stopping at a stop sign or red light, the vehicle hesitated to respond when the accelerator pedal was depressed. The instrument panel gauges illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the valve body needed to be replaced. The vehicle was repaired on two separate occasions, but the failure recurred. The vehicle was taken back to the dealer where it was diagnosed that the radiator and transmission fluid mixed together. The radiator and transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 108,000.

- Rosemead, CA, USA

When entering hwy 17 (70 mph speed limit) I pressed the gas pedal to the floor to enter oncoming traffic. Instead of increasing speed the truck stalled. I pulled onto the right side emergency lane in order to prevent traffic from running over my vehicle. I placed the transmission in park and it seemed to smooth out. Motor was running with excess RPM's and transmission was slipping. This was a near accident. I could hear cars behind placing on brakes and blowing horn. When returning home was told by Nissan dealership radiator cooler and transmission had to be replaced due to faulty lines. Nissan should have recalled this problem.

- Salisbury, NC, USA

Our 07 Nissan Frontier was being driven to be inspected for registration when, at a stop light, it just turned off and would not start. We had it towed to a mechanic. He had to send it to the local Nissan dealership for the computer to be replaced and reprogrammed. According to this mechanic, the leak from the radiator has mixed with transmission fluid in the transmission causing all these components to fail and need replacing. This is unacceptable!!

- Jacksonville, NC, USA