2013 Toyota FJ Cruiser Owners Manual - Page 163

2 -4 . U sing ot he r driving syst e m s AU TO LSD syst e m (2 WD m ode ls) 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 wheel spinning occurs in a ditch or rough surface.