Subaru 2016 WRX Quick Reference Manual page 25

SI-Drive (WRX STI only)
Turn the selector toward S for Sport mode or toward S# for Sport Sharp mode.
Press down on the selector for Intelligent mode.
Driver Control Center Differential (DCCD)
(WRX STI only)
This system adjusts the torque-
distribution ratio between the front
and rear wheels of the center
differential 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. Use the
DCCD control switch located beside
the parking brake lever for manual
operation. Pressing the "AUTO MANU"
switch again will return the system to
"AUTO" mode. 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 (torque 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.
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