One problem related to radiator has been reported for the 2009 Nissan Titan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Nissan Titan based on all problems reported for the 2009 Titan.
Noticed a small fluid leak under my car, it looked like radiator fluid. I took the vehicle to my local Nissan dealer to check it out. When the Nissan technicians investigated the leak they informed me the leak was from the seams of the radiator and the radiator required replacement. I was told that this is common and routine wear and tear for Nissan. The 2009 Titan has just over 41,000 miles and is only driven on paved roads. It has no off-road mileage. I do not believe a properly designed radiator should leak from the seams after 6 years and low mileage.