clausl 
2005 Nissan Pathfinder SUV LE Rwd 4dr SUV (4.0L 6cyl 5A)
Coolant leaking into transmission fluid
 This is a known issue with Nissan 2005 and 2006 vehicles.(Currently the subject of a class action lawsuit.)Coolant leaking into Transmission destroys transmission, computer controlling transmission and radiator. Average cost for fix is ~$7,500 warranty extension offered by Nissan doesn't cover many drivers as the issue seems to often extend beyond the extended warranty of 8yrs / 130,000km. Some vehicles are not covered despite being within these two parameters. Nissan refuses to say why some vehicles of that year/type are excluded.