Subaru 2013 Impreza Owner's Manual page 22

11-22
Maintenance and service
temperature outside. By way of example,
the following table shows the required tire
pressures that correspond to various out-
side temperatures when the temperature
in the garage is 608F (15.68C).
Example:
Ti r e s i z e : P 2 0 5 / 5 5 R 1 6 8 9 V a n d
P205/50R17 88V
Standard tire pressures:
Front: 33 psi (230 kPa, 2.3 kgf/cm
Rear: 32 psi (220 kPa, 2.2 kgf/cm
Garage temperature: 608F (15.68C)
Outside
Adjusted pressure
temperature
[psi (kPa, kgf/cm
Front
308F (−18C) 36 (250, 2.5)
38
108F (−128C)
(265, 2.65)
−108F (−238C) 40 (280, 2.8)
If the low tire pressure warning light
illuminates when you drive the vehicle in
cold outside air after adjusting the tire
pressures in a warm garage, re-adjust the
tire pressures using the method described
above. Then, increase the vehicle speed
to at least 20 mph (32 km/h) and check to
see that the low tire pressure warning light
turns off a few minutes later. If the low tire
pressure warning light does not turn off,
the tire pressure monitoring system may
not be functioning normally. In this event,
go to a SUBARU dealer to have the
system inspected as soon as possible.
While the vehicle is driven, friction be-
tween tires and the road surface causes
the tires to warm up. After illumination of
the low tire pressure warning light, any
increase in the tire pressures caused by
2
) an increase in the outside air temperature
2
or by an increase in the temperature in the
)
tires can cause the low tire pressure
warning light to turn off.
System resetting is necessary when the
2
)]
wheels are changed (for example, a
Rear
switch to snow tires) and new TPMS
35 (240, 2.4) valves are installed on the newly fitted
wheels. Have this work performed by a
37
SUBARU dealer following wheel replace-
(255, 2.55)
ment.
39 (270, 2.7)
It may not be possible to install TPMS
valves on certain wheels that are on the
market. Therefore, if you change the
wheels (for example, a switch to snow
tires), use wheels that have the same part
number as the standard-equipment
wheels. Without four operational TPMS
valve/sensors on the wheels, the TPMS
will not fully function and the warning light
on the combination meter will illuminate
steadily after blinking for approximately
one minute.
When a tire is replaced, adjustments are
necessary to ensure continued normal
operation of the tire pressure monitoring
system. As with wheel replacement, there-
fore, you should have the work performed
by a SUBARU dealer.
WARNING
If the low tire pressure warning light
does not illuminate briefly after the
ignition switch is turned ON or the
light illuminates steadily after blink-
ing for approximately one minute,
you should have your Tire Pressure
Monitoring System checked at a
SUBARU dealer as soon as possi-
ble.
If this light illuminates while driving,
never brake suddenly and keep
driving straight ahead while gradu-
ally reducing speed. Then slowly
pull off the road to a safe place.
Otherwise an accident involving
serious vehicle damage and serious
personal injury could occur.
If this light still illuminates while
driving after adjusting the tire pres-
sure, a tire may have significant
damage and a fast leak that causes
the tire to lose air rapidly. If you have