2006 Subaru Impreza Owner's Manual - Page 212

Starting and operating 7-15 Turn the dial rearward to reduce the initial LSD torque; when the white line reaches the rearmost position, the initial LSD torque will be minimum and the “ ” indicator light will come on. Under this condition, only the Mechanical LSD torque will limit the differential action. Do not turn the control dial when a wheel slippage occurs. Wait until the wheelspin has been brought under control. 700358 NOTE Under any of the following conditions, turn the center differential control dial to the rearmost position to minimize the initial LSD torque: When a temporary spare tire is installed When your vehicle is towed When the vehicle is stopped with the manual mode selected A higher initial LSD torque setting gives the vehicle greater traction when driving straight ahead but makes cornering more difficult. Remember this when adjusting the initial LSD torque. In general, higher initial LSD torque settings assist driving on slippery roads and lower settings for non-slippery roads. If you become stuck in snow or mud, turning the center differential control dial to the frontmost position will help move the vehicle out. (The “LOCK” indicator will come on at the frontmost position.) During cornering or when making turns (especially when getting into the garage), the rotational difference between the front and rear wheels may cause a braking effect accompanied by vibration and noise. This does not indicate a problem. The phenomenon will disappear when you turn the center differential control dial to the rearmost position (minimum initial LSD torque position). Use the center-differential indicator light only as a rough indication of the initial LSD torque. If you operate the center differential control dial while quickly accelerating or turning a tight corner, you may feel slight shocks. This is due to differential action by the center differential and does not indicate a problem. When the driver stops the vehicle and pulls the parking-brake lever after manually setting the initial LSD torque, the LSD torque is temporarily minimized. However the indicator in the combination meter continues to show the driver’s selected initial LSD torque. When the driver releases the parking-brake lever, the initial LSD torque set by the driver is restored. Temporary release