One problem related to differential unit has been reported for the 2005 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Toyota Tundra based on all problems reported for the 2005 Tundra.
The differential housing rusted through so that the lubricating fluid leaked out onto the road. This happened both when the truck was moving and at rest. Toyota had already replaced the vehicle frame as rapid corrosion and rusting caused a recall. The differential transfers power to the rear wheels so the lack of lubrication could have caused the rear wheels to lock while driving with the potential for a rear end collision or complete loss of control at high speed. Used replacement differential housings are unavailable because of high demand due to failure of originals due to rust.