Four problems related to transmission fluid leaking have been reported for the 2007 Nissan Titan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Nissan Titan based on all problems reported for the 2007 Titan.
Had transmission serviced and about 5000 miles or less later truck started hesitating and finally stopped. Investigated and found transmission fluid and antifreeze under truck. Had towed to nearest ammco station and they diagnosed problem as antifreeze in transmission smelled burned and said a complete re-manufactured transmission was recommended since all of the transmission components had been exposed to the anti-freeze and were burned or overheated. Talked with Nissan of gastonia nc. And they stated they could install a new re-manufactured transmission and radiator and external after market transmission fluid cooler for 5,100 dollars with a 12 month 12,000 mile warranty. They said they had a large number of frontier, xterra, and pathfinder problems with the internal transmission cooler inside the radiator failing allowing anti-freeze to leak into the transmission and destroying it. They said they had not seen the same problem with the Titans ans armadas. They had a campaign to help owners of the other models but not the Titans or armadas. The service manager for Nissan of gastonia said they could look at my truck but there would be a diagnose fee if I didn't let them do the work. The service manager at ammco said he would match Nissan's offer and give me a 36 month unlimited mileage warranty covering parts and labor, so I went with ammco. The service manager at ammco stated he had numerous Titan and armada vehicles come into his shop as well as the other models with the same problem. The internal trans/cooler lets anti-freeze leak into the transmission and it fries them. I just had my transmission serviced and the radiator flushed and filled. My 2007 Titan only has 65000 miles on it, and if Nissan knew they were having problems they could have warned me and I would have had the radiator changed out. This is really bad business in my opinion.
Rear axle seal leaking, again. Same seal was replaced 2yrs ago. Could be safety hazard if rear axle fluid gets on brake rotor.
Yet another Titan with leaking rear seals. If it leaks enough the brakes get covered in diff fluid and the rear end blow up.
Right rear axel seal leaking, fluid level really low, if went unnoticed could have caused rear to lock up and cause crash.