2005 Subaru Impreza Owner's Manual - Page 283
2005 Subaru Impreza Manual
Page 283 highlights
Starting and operating lights and control dial are linked; when the dial is turned to change the differential-action limiting factor (front/rear torque-distribution ratio), the illumination position of the indicator lights change accordingly. UG7036BA UG7035BA Turn the dial forward to increase the differential-action limiting factor. If the white line on the dial reaches the frontmost position, the center differential will be almost completely locked and the "LOCK" indicator light will come on. Turn the dial rearward to reduce the differential-action limiting factor. If the white line on the dial reaches the rearmost position, the factor will be minimal and the " " indicator light will come on. Do not turn the control dial when a wheel slippage occurs. Wait until the wheelspin has been brought under control or select the auto mode. When the vehicle has been fitted with a temporary spare tire or is to be towed, turn the control dial fully rearward (to minimize the differential-action limiting factor) or select the auto 7-20
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