Subaru 2009 Impreza User Manual download pdf (Page 239)

Driver’s Control Center Dif-

ferential (DCCD) (WRX STI)

WARNING

Always use the utmost care when

driving. Being overconfident be-

cause you are driving a vehicle with

a driver’s control center differential

could easily lead to a serious acci-

dent.

CAUTION

All the indicator lights will flash in

the event that the driver’s control

center differential has a malfunc-

tion. 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) LSD torque

2) Traction torque

3) Initial LSD torque (maximum)

4) Initial LSD torque (minimum)

A) Initial LSD torque (adjustable)

B) 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-

tial and rear differential. This sound

occurs because of the structure of the

center differential. It does not indicate a

problem.

& To change mode of driver’s

control center differential

Press the “AUTO-MANU” switch on the

center console to switch from auto mode

to manual mode or vice versa. When you

select the auto mode, the “AUTO” indica-

tor light illuminates. When you select the

manual mode, the “AUTO” indicator light

turns off.

Starting and operating 7-19

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