2010 Toyota FJ Cruiser Owners Manual - Page 196
2010 Toyota FJ Cruiser Manual
Page 196 highlights
2-4. Using other driving systems To disable TRAC and/or VSC (H2 and H4 mode [automatic transmission] or H and HL mode [manual transmission] on 4WD models) If the vehicle gets stuck in fresh snow or mud, TRAC and VSC may reduce power from the engine to the wheels. You may need to turn the system off to enable you to rock the vehicle in order to free it.