2009 Subaru Outback Owner's Manual - Page 279

Starting and operating 7-33 mode. . The next time you turn on the engine, after you turned off the engine in the Sport (S) mode or Intelligent (I) mode, the SI-DRIVE mode will stay in the same mode as when the engine was turned off. . While the engine is running, if the CHECK ENGINE warning light/malfunction indicator lamp illuminates, the SIDRIVE mode changes to the Sport (S) mode. In this case, it is not possible to change to the Sport Sharp (S#) mode or Intelligent (I) mode. . If there is a possibility that the engine could overheat because of a temperature increase of the engine coolant, it is not possible to change to the Sport Sharp (S#) mode. While the vehicle is in the Sport Sharp (S#) mode, it changes to the Sport (S) mode when the engine coolant temperature increases. For 3.0 L models, it also changes to the Sport (S) mode when the engine oil temperature increases. & SI-DRIVE Sport Sharp (S#) switch While driving in the Sport (S) mode or Intelligent (I) mode, when you push the steering wheel switch, it changes to the Sport Sharp (S#) mode. Rear viscous limited slip differential (LSD) (if equipped) CAUTION . Never start the engine while a tire on one side is jacked up, as the vehicle may move. . If one rear tire is spinning in mud, avoid continued spinning at high speed as this could adversely affect the LSD. . If a different size rear tire is temporarily used (as in an emergency), it will adversely affect the LSD. Always replace it with a regular size tire as soon as possible. The LSD provides optimum distribution of power according to the difference in revolutions between the right and left rear wheels that may be caused by certain driving conditions, thereby improving driving stability on snow-covered, muddy or other slippery roads. NOTE While driving in Sport Sharp (S#) mode, when you push the switch, it changes to the former mode before Sport Sharp (S#) mode.