Subaru WRX & WRX STI Manuals 2016 WRX & WRX STI Owner’s Manual | Page 422

Starting and operating/Limited slip differential (LSD) (STI) other than Sport Sharp (S#) mode is selected. Limited slip differential (LSD) (STI) Power steering The LSD provides optimum distribution of power according to the difference in revolutions between the right and left wheels that may be caused by certain driving conditions, thereby improving driving stability on snow-covered, muddy or other slippery roads or when high speed driving. The vehicle is equipped with a hydraulic power steering system. The power steering system operates only when the engine is running. If you lose power steering assist because the engine stops or the system fails to function, you can steer but it will take much more effort. NOTE . The next time you turn on the engine, after you turned off the engine in the Sport Sharp (S#) mode, the SIDRIVE mode changes to the Sport (S) 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 light illuminates, the SIDRIVE mode changes to the Sport (S) mode. In this case, it is not possible to change to another 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. . While the engine is cool, y