One problem related to differential unit has been reported for the 2012 Toyota Tacoma. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Tacoma based on all problems reported for the 2012 Tacoma.
I have 27,000 miles on my truck and the rear differential is defective. I am afraid it will lock up at high speeds, 55 mph + and cause an accident!! Toyota won't fix it.