2016 SUBARU WRX spark plugs

Maintenance schedule ....................................... 11-3
Maintenance precautions ................................... 11-3Before checking or servicing in the engine
compartment .................................................... 11-4
When checking or servicing in the engine
compartment .................................................... 11-5
When checking or servicing in the engine
compartment while the engine is running .......... 11-5
Maintenance tips ................................................ 11-6Removing and reinstalling clips .......................... 11-6
Engine hood ....................................................... 11-9
Engine compartment overview ........................ 11-11STI................................................................... 11-11
Except STI ....................................................... 11-12
Engine oil .......................................................... 11-13Engine oil consumption .................................... 11-13
Checking the oil level ....................................... 11-13
Changing the oil and oil filter ............................ 11-15
Recommended grade and viscosity .................. 11-16
Synthetic oil ..................................................... 11-16
Cooling system ................................................ 11-17Cooling fan, hose and connections ................... 11-17
Engine coolant ................................................. 11-18
Air cleaner element .......................................... 11-19
Replacing the air cleaner element ..................... 11-19
Spark plugs ...................................................... 11-21
Recommended spark plugs .............................. 11-21
Drive belts ........................................................ 11-22
Manual transmission oil .................................. 11-23
Recommended grade and viscosity .................. 11-23 Continuously variable transmission fluid ...... 11-23
Front differential gear oil (CVT models) and
rear differential gear oil ................................ 11-23Recommended grade and viscosity .................. 11-23
Power steering fluid (STI) ............................... 11-24Checking the fluid level .................................... 11-24
Recommended fluid ......................................... 11-24
Brake fluid ........................................................ 11-25Checking the fluid level .................................... 11-25
Recommended brake fluid ............................... 11-25
Clutch fluid (MT models) ................................. 11-26Checking the fluid level .................................... 11-26
Recommended clutch fluid ............................... 11-26
Brake booster .................................................. 11-27
Brake pedal ...................................................... 11-27Checking the brake pedal free play .................. 11-27
Checking the brake pedal reserve distance ....... 1 1-28
Clutch pedal (MT models) ............................... 11-28Checking the clutch function ............................ 11-28
Checking the clutch pedal free play .................. 11-28
Hill start assist system .................................... 11-29
Replacement of brake pad and lining ............ 11-29Breaking-in of new brake pads (models with
electronic parking brake system) .................... 11-29
Breaking-in of new brake pads and linings
(models without electronic parking brake
system) ......................................................... 11-30
Parking brake stroke (models without
electronic parking brake system) ................ 11-30Maintenance and service
11

1) Air cleaner case
2) Air cleaner case cover
2. Open the air cleaner case and pull the
cover rearward while lifting it up.
3. Remove the air cleaner element. 4. Clean the inside of the air cleaner case
and case cover with a damp cloth and
install a new air cleaner element.
5. To install the air cleaner case cover,
insert the projections on the air cleaner
case cover into the slits on the air cleaner
case. The illustration above shows an
example in which the projections are not
fitted into the slits correctly.
6. Install in the reverse order of removal. Spark plugs It may be difficult to replace the spark
plugs. It is recommended that you have
the spark plugs replaced by your
SUBARU dealer.
The spark plugs should be replaced
according to the maintenance schedule
in the “ Warranty and Maintenance Book-
let ” .
& Recommended spark plugs For the recommended spark plugs, refer
to “ Electrical system ” F 12-8.Maintenance and service/Spark plugs
11-21

Specifications/Specifications
& Electrical system Battery type and capacity (5HR) 55D23L
Alternator STI 12V-110A
Except STI 12V-130A
Spark plugs STI SILFR6A (NGK)
Except STI ILKAR8H6 (NGK)
& Tires Tire size 235/45R17 94W 245/40R18 97W
Wheel size
17 6 8J 18 6 8 1/2J
Pressure Front
33 psi (230 kPa, 2.3 kgf/cm 2
) 33 psi (230 kPa, 2.3 kgf/cm 2
)
Rear
32 psi (220 kPa, 2.2 kgf/cm 2
) 32 psi (220 kPa, 2.2 kgf/cm 2
)
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 ” F 9-4.
& Temporary spare tires Temporary spare tire size T145/70D17 205/50R17
Temporary spare tire inflation pressure
(recommended cold tire inflation pressure) 60 psi (420 kPa, 4.2 kgf/cm 2
) 33 psi (230 kPa, 2.3 kgf/cm 2
)
Wheel nut tightening torque
89 lbf·ft (120 N·m, 12 kgf·m)* 1
* 2
*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.
*2: For the wheel nut tightening procedure, refer to “ Changing a flat tire ” F 9-4.12-8

Rear view camera ...................................................... 6-12
Rear window
Defogger .............................................................. 3-112
Recommended
Brake fluid. ............................................................ 12-7
Clutch fluid ................................................... 11-26, 12-7
Engine oil .............................................................. 12-4
Front differential gear oil ......................................... 12-6
Manual transmission oil .......................................... 12-6
Power steering fluid ................................................ 12-7
Rear differential gear oil .......................................... 12-6
Spark plugs ........................................................... 12-8
Refueling .................................................................... 7-5
Remote engine start system ........................................ 7-14
Remote keyless entry system ...................................... 2-21
Replacement
Brake pad and lining ............................................. 11-29
Wiper blades ........................................................ 11-39
Replacing
Access key battery ................................................ 11-50
Air cleaner element ............................................... 11-19
Battery (keyless access with push-button start
system) ...................................................... 2-18, 11-50
Battery (remote keyless entry system) ............. 2-24, 11-51
Lost transmitters (remote keyless entry system) ......... 2-24
Remote keyless entry transmitter battery .................. 11-51
Replacing bulbs .............................................. 11-44, 12-16
Front fog light ....................................................... 11-47
Headlight ............................................................. 11-44
License plate light ................................................. 11-49
Rear combination light ........................................... 11-48 Rear side marker light ........................................... 11-48
Rear turn signal light ............................................. 11-48
Stop light ............................................................. 11-48
Tail light. .............................................................. 11-48
REV indicator light and buzzer ..................................... 3-12
Rocking the vehicle .................................................... 8-10
S
Safety
Precautions when driving ............................................. 3
Symbol ...................................................................... 2
Warnings ................................................................... 2
Seat
Fabric ................................................................... 10-5
Front ...................................................................... 1-2
Heater .................................................................... 1-6
Height adjustment .................................................... 1-4
Power .................................................................... 1-5
Rear ...................................................................... 1-7
Seatbelt. ................................................................ 3, 1-11
Fastening .............................................................. 1-13
Maintenance .......................................................... 1-16
Pretensioners ......................................................... 1-17
Safety tips ............................................................. 1-11
Warning light and chime .......................................... 3-14
Security
Alarm
system ......................................................... 2-25
Immobilizer ............................................................. 2-3
Indicator light ......................................................... 3-33
Shock sensors ....................................................... 2-31 Index
14-9

14-10 Index
Select lever
Position indicator ................................................... 3-34
Shift lock function ................................................... 7-27
Setup (phone settings) .............................................. 5-101
Phone settings ..................................................... 5-101
Shift-up indicator light ................................................. 3-34
Shock sensors ........................................................... 2-31
Shoulder pretensioners ............................................... 1-17
SI-DRIVE
Indicator light ......................................................... 3-34
SI-DRIVE mode ......................................................... 7-29
Snow tires ......................................................... 8-9, 11-31
Snowy and icy roads .................................................... 8-8
Sounding a panic alarm .............................................. 2-23
Spark plugs ...................................................... 11-21, 12-8
Specifications ............................................................ 12-2
Speedometer ............................................................... 3-9
SRS
Curtain airbag ........................................................ 1-50
Frontal airbag ........................................................ 1-38
Side airbag ........................................................... 1-50
SRS airbag (Supplemental Restraint System airbag) ... 3, 1-33
SRS airbag system
Monitors. ............................................................... 1-57
Servicing ............................................................... 1-58
Warning light ......................................................... 3-15
Starting & stopping engine .................................... 7-9, 7-12
State emission testing (U.S. only) .................................. 7-7
Steering responsive fog lights system ........................... 3-99
OFF indicator ........................................................ 3-37 Steering wheel
Power ................................................................... 7-33
Tilt/telescopic ....................................................... 3-113
Stop light ................................................................. 11-48
Storage compartment ................................................... 6-5
Sun shade ................................................................. 2-40
Sun visors .................................................................. 6-3
Supplemental Restraint System airbag (SRS) ................ 1-33
Synthetic leather upholstery ......................................... 10-5
T
Tachometer ................................................................ 3-10
Temperature gauge ..................................................... 3-11
Temperature warning light
AT OIL TEMP ......................................................... 3-18
Rear differential oil .................................................. 3-18
Temporary spare tire ............................................ 9-2, 12-8
Tether (child restraint system) .............................. 1-29, 1-32
Tie-down hooks .......................................................... 9-12
Tips for operating the audio/visual system ..................... 5-21
Operating information .............................................. 5-21
Tire................................................................. 11-31, 12-8
Chains .................................................................. 8-10
Inspection ............................................................ 11-32
Pressures and wear .............................................. 11-33
Replacement. ....................................................... 11-36
Rotation ..............................................................
11-36
Size and pressure .................................................. 12-8
Types .................................................................. 11-31
Tire pressure monitoring system (TPMS) ....... 7-42, 9-8, 11-31
Warning light .......................................................... 3-19