Subaru WRX 2020 Quick Manual page 29

Driver Control Center Differential (DCCD) (WRX STI only)
This electronically controlled system adjusts
the power-distribution ratio between the front
and rear wheels. The system is designed to
provide optimum differential control for
improved vehicle cornering, stability, and
handling control to suit driving and road
surface conditions. The DCCD can be
operated automatically or manually.
When the system is in the automatic mode, the "AUTO" indicator
light in the combination meter comes on. The DCCD can be taken
out of "AUTO" mode and used manually by pressing the "AUTO
MANU" switch located on the center console. Pressing the "AUTO
MANU" switch again will return the system to "AUTO" mode.
When in "AUTO" mode you can use the "C.DIFF" switch to change
between AUTO [+], AUTO, and, AUTO [–]. To change to AUTO [+]
push the C.DIFF switch forward. To change to AUTO[–] push the C.DIFF switch rearward.
• AUTO [+]: This mode emphasizes traction control and strengthens the limitation of
differential action that is suitable for driving on slippery roads for vehicle stability.
• AUTO: This mode is suitable for most driving situations.
• AUTO [–]: This mode is suitable when you seek quick response from the steering wheel
and smooth driving.
To use manual mode press the "AUTO MANU" switch then push the
"C.DIFF" switch forward to increase the Limited Slip Differential
(LSD) torque or rearward to reduce the LSD torque
When using the system manually, if the control switch is set closer
to or at the "Lock" position, the powertrain may make a vibration or
noise when the vehicle is in tight turns at slow speeds (system
binding). In addition, if the rear differential oil exceeds a certain
temperature, the DCCD will automatically cancel the current torque-distribution ratio
setting and adopt its minimum ratio.
OPERATING THE VEHICLE
27