2013 Toyota Tundra CrewMax Owners Manual - Page 210
2013 Toyota Tundra CrewMax Manual
Page 210 highlights
2 -4 . U sing ot he r driving syst e m s AU TO LSD syst e m The AUTO LSD system aids traction by using the traction control system to control engine performance and braking when one of the rear wheels begins to spin. The system should be used only when one of the rear wheels spinning occurs in a ditch or rough surface.