2018 SUBARU WRX alternator

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
NOTEThis light also illuminates when the fuel
filler cap is not tightened until it clicks.
If you have recently refueled your vehicle,
the cause of the CHECK ENGINE warning
light/malfunction indicator light illuminating
could be a loose or missing fuel filler cap.
Remove the cap and retighten it until it
clicks. Make sure nothing is interfering with
the sealing of the cap. Tightening the cap
will not make the CHECK ENGINE warn-
ing light/malfunction indicator light turn off
immediately. It may take several driving
trips. If the light does not turn off, take your
vehicle to your authorized SUBARU dealer
immediately.
!If the light is blinking
If the light is blinking while driving, an
engine misfire condition has been de-
tected which may damage the emission
control system.
To prevent serious damage to the emis-
sion control system, you should do the
following.
.Reduce vehicle speed.
.Avoid hard acceleration.
.Avoid steep uphill grades.
.Reduce the amount of cargo, if possi-
ble.The CHECK ENGINE warning light may
stop blinking and illuminate steadily after
several driving trips. You should have your
vehicle checked by an authorized
SUBARU dealer immediately.
&Charge warning lightIf this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt. If the belt is
loose, broken or if the belt is in good
condition but the light remains illuminated,
contact your nearest SUBARU dealer
immediately.&Oil pressure warning
lightIf this light illuminates when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the engine oil level. If the oil level is
low, add oil immediately. If the engine oil is
at the proper level but the light remainsilluminated, contact your nearest
SUBARU dealer immediately.
For details about checking the engine oil
level or adding the engine oil, refer to
“Engine oil”F11-13.
CAUTION
Do not operate the engine with the
oil pressure warning light on. This
may cause serious engine damage.&Engine low oil level
warning indicator
(except STI)This indicator appears when the engine oil
level decreases to the lower limit.
If the engine low oil level warning indicator
appears while driving, park the vehicle in a
safe and level location, and then check the
engine oil level. When the engine oil level
is not within the normal range, refill with
engine oil. Refer to“Engine oil”F11-13.
If the warning indicator does not disappear
after refilling the engine oil, or the warning
indicator appears even though the engine
oil level is within the normal range, have
the vehicle checked by a SUBARU dealer.
–CONTINUED–
Instruments and controls/Warning and indicator lights
3-17
3

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Spark plugsIt may be difficult to replace the spark
plugs. It is recommended that you have the
spark plugs replaced by your SUBARU
dealer.
Have the spark plugs replaced according
to the maintenance schedule in the“War-
ranty and Maintenance Booklet”.&Recommended spark plugsFor the recommended spark plugs, refer to
“Electrical system”F12-8.
Drive beltsNOTEFor models except STI, it is unneces-
sary to check the deflection of the drive
belt periodically because this engine is
equipped with an automatic belt ten-
sion adjuster. However, have the belt
replaced according to the maintenance
schedule in the“Warranty and Main-
tenance Booklet”. Consult your
SUBARU dealer for replacement.
If the drive belt is loose, cracked or
worn, contact your SUBARU dealer.
STI
1) Power steering oil pump pulley
2) Front side belt
3) Alternator pulley
4) Air conditioner compressor pulley
5) Rear side belt
6) Crank pulley
A) 22 lbf (98 N, 10 kgf)
CAUTION
The front side belt, which runs in
conjunction with the following com-
ponents, must be used within the
specified deflection.
.Power steering oil pump pulley
.Alternator pulley
.Crank pulley
Check the deflection of the front side
–CONTINUED–
Maintenance and service/Spark plugs
11-21
11

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
belt and if there is any looseness,
cracks, wear or unusual noise on the
front side belt, contact your
SUBARU dealer.
Continuing to use the vehicle with
the belt outside of the specification
may cause the engine to malfunc-
tion and the above components to
malfunction.
To check the deflection of the front side
belt, place a straightedge (ruler) across
two adjacent pulleys (alternator pulley and
crank pulley) and apply a force of 22 lbf (98
N, 10 kgf) midway between the pulleys by
using a spring scale. The belt deflection
should be the amount specified. If the front
side belt is loose, cracked or worn, contact
your SUBARU dealer.
in (mm)
Deflection
New belt
Used belt
A0.28–0.35
(7.0–9.0)0.35–0.43
(9.0–11.0)
The rear side belt is a stretch-type belt,
therefore the deflection does not need to
be checked. If there are cracks or wear
confirmed on the belts and a squeaking
noise is heard from them, contact your
SUBARU dealer.
Manual transmission oilIt is not necessary to check the transmis-
sion oil level. Check that there are no
cracks, damage or leakage. However,
have the oil inspected by your SUBARU
dealer according to the maintenance
schedule in the“Warranty and Mainte-
nance Booklet”. Consult your SUBARU
dealer for details.&Recommended grade and
viscosityEach oil manufacturer has its own base
oils and additives. Never use different
brands together. For details, refer to
“Manual transmission, front differential
and rear differential gear oil”F12-6.
Continuously variable trans-
mission fluidIt is not necessary to check the transmis-
sion fluid level. Check that there are no
cracks, damage or leakage. However,
have the fluid inspected by your SUBARU
dealer according to the maintenance
schedule in the“Warranty and Mainte-
nance Booklet”. Consult your SUBARU
dealer for details.
Maintenance and service/Manual transmission oil
11-22

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
&Electrical systemAlternatorSTI 12V-110A
Except STI 12V-130A
Spark plugsTYPE RA ILFR7H (NGK)
STI except TYPE RA SILFR6A (NGK)
Except STIILKAR8H6 (NGK)&TiresTire sizeSTI—245/40R18 97W 245/35R19 89W
Except STI 235/45R17 94W 245/40R18 97W—
Wheel size
1768J 1868 1/2J 1968 1/2J
Pressure Front
33 psi (230 kPa, 2.3 kgf/cm
2)
Rear
32 psi (220 kPa, 2.2 kgf/cm2)
Wheel nut tightening torque
89 lbf·ft (120 N·m, 12 kgf·m)*1
*1: This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the end of the wheel nut wrench. If you have tightened the wheel nuts
by yourself, have the tightening torque checked at the nearest automotive service facility as soon as possible. For the wheel nut tightening procedure,
refer to“
Changing a flat tire”F9-5.Specifications/Specifications
12-8