One problem related to automatic transmission cooler has been reported for the 2013 Nissan Sentra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Nissan Sentra based on all problems reported for the 2013 Sentra.
While in heavy traffic on a bay area bridge, the car lost acceleration, started to slow down, even while I pumped the gas pedal all the way to the floor. Had it towed to dealer, they said it had to do with cooling fan. After that repair, the same problem happened several more times, always while on the highway, but I found if I kept pumping the gas pedal all the way to the floor it would eventually start to slowly accelerate. After a near-accident on the freeway due to this problem as I drove through san jose, I took the car back in and they replaced the transmission. 2 days later the heat shield fell off while I was driving. 5 days after that, while on the highway traveling at 40mph, the car again lost power, slowly decelerating, despite pumping the gas pedal to the floor. After several attempts to pump the gas it finally started to accelerate again, so I did not pull off the highway.