2005-10 Nissan Truck, SUV Owners Plagued by Transmission Failures - MotorTrend Magazine

Unfortunately that’s what owners of 2005-2010 Nissan Frontiers, Pathfinders, and Xterras have been going through, when radiator coolant leaks into the automatic transmission. In October of last year, Nissan extended warranty coverage on the radiators of 2005-2010 Frontiers, Pathfinders and Xterras from three years or 36,000 miles, to eight years or 80,000 miles. The New York Times reports that Nissan said only “a small percentage” of its Frontiers, Pathfinders and Xterras would be affected. The problem was caused by a cracked oil cooler tube, causing a coolant leak. Fast forward to today, and many Nissan truck and SUV owners are reporting that the radiator issues have affected the vehicles transmissions, causing premature failure. Lance Wiggins, Technical Director of the Automatic Transmission Rebuilders Association told The New York Times that what’s happening is the radiator cooler tanks are rupturing, forcing coolant into the five-speed automatic through the transmission... When Nissan notified owners of the radiator problems, they allegedly failed to acknowledge that the issue could allow coolant to enter the transmission and take it out of commission. Also, by moving the coverage from 36,000 miles to only 80,000 miles, it left many Frontier, Pathfinder, and Xterra owners out to dry, because many early buyers had already driven past the 80,000 mile cutoff. Source: wot.motortrend.com