Subaru WRX & WRX STI Manuals 2015 WRX & WRX STI Owner's Manual | Page 347

7-20

Starting and operating/Driver’s Control Center Differential (C.DIFF/DCCD) (STI)

tial and rear differential. This sound
occurs because of the structure of the
center differential. It does not indicate a
problem.

& Auto mode

The auto mode has 3 modes as follows.
Mode

Operation

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 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” indicator appears. When you select the manual
mode, the “AUTO” indicator disappears.

In the auto mode, the system estimates
the driving and road conditions using
signals from the wheel speed sensor,
throttle position sensor, steering angle
sensor and brake switch, etc. According
to the result, it electronically and automatically controls the degree of limitation
of the differential action (LSD torque) to
optimize the differential action of the
center differential. When the ignition
switch is turned ON, the “AUTO” indicator
on the combination meter appears.

! Mode setting method
In most situations, it is recommended that
the “AUTO” mode is selected.

Push the control switch forward to select