2011 Subaru Impreza Owner's Manual - Page 281

7-18 NOTE Starting and operating Never exceed the posted speed limit. Driver's Control Center Differential (DCCD) (STI) WARNING Always use the utmost care when driving. Being overconfident because you are driving a vehicle with a driver's control center differential could easily lead to a serious accident. & Driving tips Do not drive with your foot resting on the clutch pedal and do not use the clutch to hold your vehicle at a standstill on an upgrade. Either of those actions may cause clutch damage. Do not drive with your hand resting on the shift lever. This may cause wear on the transmission components. When it is necessary to reduce vehicle speed due to slow traffic, turning corners, or driving up steep hills, downshift to a lower gear before the engine starts to labor. On steep downgrades, downshift the transmission to 4th, 3rd or 2nd gear as necessary; this helps to maintain a safe speed and to extend brake pad life. In this way, the engine provides a braking effect. Remember, if you "ride" (over use) the brakes while descending a hill, they may overheat and not work properly. The engine may, on rare occasions, knock when the vehicle rapidly accelerates or rapidly pulls away from a standstill. This phenomenon is not an indication of a problem in your vehicle. CAUTION All the indicator lights will flash in the event that the driver's control center differential has a malfunction. Have the vehicle inspected by your SUBARU dealer. The driver's control center differential allows you to freely change the degree of limitation of the differential action (limited slip differential (LSD) torque) of your vehicle's center differential. By using the center differential control switch, you can set an initial LSD torque to match the road surface conditions, driving conditions and your driving style. 1) 2) 3) 4) A) B) LSD torque Traction torque Initial LSD torque (maximum) Initial LSD torque (minimum) Initial LSD torque (adjustable) Mechanical LSD torque The driver's control center differential has an auto mode and a manual mode. In the auto mode, the system automatically adjusts the initial LSD torque. In the manual mode, you can change to the desired mode manually by using the center differential control switch. NOTE If you rapidly depress and release the accelerator pedal while driving at low speed, you may hear a knocking sound from the vicinity of the center differen-