2006 Subaru Forester Owner's Manual - Page 209

7-14 Starting and operating parking your vehicle. Do not hold the vehicle with only the transmission. Do not keep the vehicle in a stationary position on an uphill grade by using the "D", "3", "2", or "1" position. Use the brake instead. Rear viscous limited slip differential (LSD) (if equipped) 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. 700060 Shift lock release If the selector lever does not move from the "P" position with the brake pedal depressed and the ignition switch in the "ON" position, perform the following steps: To override the shift lock: 1. Set the parking brake and stop the engine. 2. Take out the screwdriver. 3. Remove the cover by prying on the edge with the screwdriver. 4. Insert the screwdriver into the hole. 5. Push down on the screwdriver and move the selector lever from the "P" to the "N" position. 6. Remove the screwdriver from the hole. Depress the brake pedal and start the engine. Take your vehicle to the nearest SUBARU dealer immediately to have the system repaired. 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. 700059