One problem related to differential unit has been reported for the 2007 Nissan Frontier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Nissan Frontier based on all problems reported for the 2007 Frontier.
Vehicle is well maintained with 115,000 miles odometer reading. This is the 2nd time the rear axle seas have failed, resulting in gear oil soaking rear brakes, resulting in oil contamination of brake pads and rendering the parking brake ineffective. The reason was explained by Nissan as a rusted $14 breather tube in the differential housing causing pressure build up to ruin the $7 dollar seals. The result is a repair any where fro $1500 for a difficult axle pull to get to the seals or up to$6500 to replace the entire rear assembly. The problem with seal replacement is it is difficult and time consuming and must be performed perfectly or the seals will leak again. The root cause is a poor breather system,. Nissan is aware of this problem and refuses to acknowledge the defective design and application. Continued use will cause premature rear brake failure and too much stress on the front brakes to stop the vehicle.