Replacement Of Wiper Blades - Subaru WRX-STI Owner's Manual

11-42
Maintenance and service/Replacement of wiper blades
Washer Fluid
Concentration Temperature
−128C (10.48F)
30%
−208C (−48F)
50%
−458C (−498F)
100%
In order to prevent freezing of washer
fluid, check the freezing temperatures in
the table above when adjusting the fluid
concentration to the outside temperature.
If you fill the reservoir tank with fluid with a
different concentration from the one used
previously, purge the old fluid from the
piping between the reservoir tank and
washer nozzles by operating the washer
for a certain period of time. If the
concentration of the fluid remaining in
the piping is too low for the outside
temperature, it may freeze and block the
nozzles.
CAUTION
Adjust the washer fluid concentra-
tion appropriately for the outside
temperature. If the concentration is
inappropriate, sprayed washer fluid
may freeze on the windshield and
obstruct your view, and the fluid
may freeze in the reservoir tank.

Replacement of wiper blades

Freezing
Grease, wax, insects, or other material on
the windshield or the wiper blade results in
jerky wiper operation and streaking on the
glass. If you cannot remove the streaks
after operating the windshield washer or if
the wiper operation is jerky, clean the
outer surface of the windshield (or rear
window) and the wiper blades using a
sponge or soft cloth with a neutral
detergent or mild-abrasive cleaner. After
cleaning, rinse the windshield and wiper
blades with clean water. The windshield is
clean if beads do not form when you rinse
the windshield with water.
. Do not clean the wiper blades
with fuel or a solvent, such as
paint thinner or benzine. This will
cause deterioration of the wiper
blades.
. When you wish to raise the
passenger-side wiper arm, first
raise the driver-side wiper arm.
Otherwise, the passenger-side
wiper assembly and driver-side
wiper assembly will touch each
other, possibly resulting in
scratches.
CAUTION
. Return the passenger-side wiper
arm to its original position before
returning the driver-side wiper
arm to its original position.
Otherwise, the passenger-side
wiper assembly and driver-side
wiper assembly will touch each
other, possibly resulting in
scratches.
. While removing the wiper blades
from the wiper arms, do not
return the wiper arms to the
original positions. Otherwise,
the windshield surface may be
scratched.
. When returning the raised wiper
arms to the original positions,
carefully return the wiper arms
on the windshield by hand. You
should not return the wiper arms
to the windshield only by the
return spring. Otherwise, the wi-
per arms may be deformed and/
or the windshield surface may be
scratched.
If you cannot eliminate the streaking even
after following this method, replace the
wiper blades using the following proce-
dures.