Subaru WRX & WRX STI Manuals 2013 Impreza WRX & WRX STI Owner's Manual | Page 279

Starting and operating

Hill start assist system
CAUTION
The Hill start assist system is a
device only for helping the driver
to START the vehicle on an uphill
grade. To prevent accidents when
the vehicle is parked on a slope, be
sure to firmly set the parking brake.
When setting the parking brake,
make sure that the vehicle remains
stationary when the clutch pedal is
released.

is depressed while the brake pedal is also
depressed, braking power is maintained
temporarily by the Hill start assist system
when the brake pedal is released. The
driver is therefore able to start the vehicle
the same way as on a level grade, just
using the clutch and accelerator pedal.

begins to move forward after being reversed.
If the braking power of the Hill start assist
system is insufficient after the brake pedal
is released, apply more braking power by
depressing the brake pedal again.

& To activate/deactivate the Hill
start assist system (STI)
CAUTION
While the Hill start assist system is
deactivated, when starting on an
uphill grade, braking power is not
maintained if the brake pedal is
released. Start on an uphill grade
by using the parking brake.

The Hill start assist system is a device to
make starting on an uphill grade easier.

The Hill start assist system does not
operate when the vehicle is facing downhill. And the Hill start assist system may
not operate on slight grades.
When starting in reverse and using the Hill
start assist system, a braking effect may
be felt even after the brake pedal has
been released. However, this braking
effect should disappear once the clutch
pedal is released.
On an uphill grade, when the clutch pedal

7-35

You can activate/deactivate the Hill start
assist system according to the following
procedure.
! To deactivate
1. Stop your vehicle in a flat and safe
place and apply the parking brake.
2. Turn off the engine.
3. Restart the engine.

A slight jolt may be felt when the vehicle
– CONTINUED –