Owners/service Manual problems of the 2005 Nissan Frontier

At the approximate speed of 5 to 8 mph, and accelerating, the "service engine soon" signal light up. Immediately I had to turn 5000 rpms to reach a speed of 20 mph. I drove the vehicle approximately 5 miles to home and parked it their. Contacted my mechanic and took the vehicle to his garage the next morning for a total of 8 miles in addition to the 5 for a total of 13 miles driven while in warning. Upon completion of a diagnostics check, it was discovered that there had been a transmission radiator valve failure. This valve fails to operate, and does not allow coolant and lubrication of the transmission to continue. The valve is connected to the transmission radiator, located within the confines of the cooling radiator. The radiator was replaced, and upon test drive it was discovered that the transmission was deficient or had burned up 3rd and 4th gears. The totality of the repairs to include replacement of a transmission, radiator, fluids and labor was in excess of $4,000. 00. A vehicle with less than 130,000 miles of highway use, with all maintenance performed as prescribed within the owners manual, service recommendations should not have failed. A single valve is/ was the responsible culprit. I have previously owned a Ford ranger, took care of it as I have the Frontier, and had in excess of 200,000 miles on the ranger upon trading it in. I never replaced a transmission in my life on any vehicle. Nissan needs to acknowledge the issue at hand and take the appropriate corrective action, respect the customers that have respected you over the years.