Subaru WRX & WRX STI Manuals 2010 Impreza WRX & WRX STI Owner’s Manual | Page 245

Starting and operating

& 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.

7-19

Driver’s Control Center Differential (DCCD) (WRX 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.

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– CONTINUED –