One problem related to radiator hose has been reported for the 2007 Nissan Xterra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Nissan Xterra based on all problems reported for the 2007 Xterra.
Transmission failure due to leak from radiator cooling system fluid intermixing with transmission fluid. Check engine light came on while driving, went to repair shop the code p0717 came up. Upon inspection by the repair shop it was determined that the transmission, radiator, and all hoses,etc. That interconnected the transmission and radiator had to be replaced. I live in California and the problem occured in arizona.