2016 SUBARU WRX check engine

Brake booster If the brake booster does not operate as
described in the following, have it checked
by your SUBARU dealer.
1. With the engine off, depress the brake
pedal several times, applying the same
pedal force each time. The distance the
pedal travels should not vary.
2. With the brake pedal depressed, start
the engine. The pedal should move
slightly down to the floor.
3. With the brake pedal depressed, stop
the engine and keep the pedal depressed
for 30 seconds. The pedal height should
not change.
4. Start the engine again and run for
approximately one minute then turn it off.
Depress the brake pedal several times to
check the brake booster. The brake
booster operates properly if the pedal
stroke decreases with each depression.
NOTE When you depress the brake pedal
strongly or suddenly, you might feel
that lighter depression of the brake
pedal generates a greater braking
force. However, even though these
occur, they do not indicate any mal-
functions, and the brake assist system is operating properly.
Brake assist is not a system that brings
more braking ability to the vehicle
beyond its breaking capability.
Brake pedal Check the brake pedal free play and
reserve distance according to the main-
tenance schedule in the “ Warranty and
Maintenance Booklet ” .
& Checking the brake pedal
free play
1) 0.02 – 0.11 in (0.5 – 2.7 mm)
Stop the engine and firmly depress the
brake pedal several times. Lightly pull the
brake pedal up with one finger to check
the free play with a force of less than 2 lbf
(10 N, 1 kgf).
If the free play is not within proper
specification, contact your SUBARU deal-
er. Maintenance and service/Brake booster
– CONTINUED –11-27

Maintenance and service/Clutch pedal (MT models)
& Checking the brake pedal
reserve distance
1) More than 2.56 in (65 mm)
Depress the pedal with a force of approxi-
mately 66 lbf (294 N, 30 kgf) and measure
the distance between the upper surface of
the pedal pad and the floor.
When the measurement is smaller than
the specification, or when the pedal does
not operate smoothly, contact with your
SUBARU dealer. Clutch pedal (MT models) Check the clutch pedal free play and
reserve distance according to the main-
tenance schedule in the “ Warranty and
Maintenance Booklet ” .
& Checking the clutch function Check the clutch engagement and disen-
gagement.
1. With the engine idling, check that there
are no abnormal noises when the clutch
pedal is depressed, and that shifting into
1st or reverse feels smooth.
2. Start the vehicle by releasing the pedal
slowly to check that the engine and
transmission smoothly couple without
any sign of slippage. & Checking the clutch pedal
free play
1) 0.16 – 0.43 in (4.0 – 11.0 mm)
Lightly depress the clutch pedal down with
your finger until you feel resistance, and
check the free play.
If the free play is not within proper
specification, contact your SUBARU deal-
er.11-28

Maintenance and service/Aluminum wheels
Aluminum wheels Aluminum wheels can be scratched and
damaged easily. Handle them carefully to
maintain their appearance, performance,
and safety.
. When any of the wheels are removed
and replaced for tire rotation or to change
a flat tire, always check the tightness of
the wheel nuts after driving approximately
600 miles (1,000 km). If any nut is loose,
tighten it to the specified torque.
. Never apply oil to the threaded parts,
wheel nuts, or tapered surface of the
wheel.
. Never let the wheel rub against sharp
protrusions or curbs.
. When wheel nuts, balance weights, or
the center cap is replaced, be sure to
replace them with genuine SUBARU parts
designed for aluminum wheels. Windshield washer fluid CAUTIONNever use engine coolant as washer
fluid because it could cause paint
damage.
When there is only a small amount of
washer fluid remaining, the windshield
washer fluid warning indicator will illumi-
nate. When this occurs, refill the washer
fluid as follows. Remove the washer tank filler cap, then
add windshield washer fluid until it
reaches the “ FULL ” mark on the tank. If
windshield washer fluid is unavailable use
clean water.
In areas where water freezes in winter,
use an anti-freeze type windshield washer
fluid. SUBARU Windshield Washer Fluid
contains 58.5% methyl alcohol and 41.5%
surfactant, by volume. Its freezing tem-
perature varies according to how much it
is diluted, as indicated in the following
table.11-38

Specifications/Specifications
& Engine oilFor the checking, adding and replacing procedure or other details, refer to “ Engine oil ” F 11-13.
NOTE The procedure for changing the engine oil and oil filter should be performed by a properly-trained expert. It is recommended
that you have this service performed by your SUBARU dealer.
! Oil filterModel STI Except STI
Oil filter color Black Black
Part number 15208AA100 15208AA170
Amount of rotation 1 rotation 3/4 rotation
! Approved engine oil
Always use the SUBARU approved engine oil. For further details, please contact your SUBARU dealer.
If the approved engine oil is unavailable, use the alternative engine oil described on the next page.12-4

crease in temperature could cause
tread separation, and failure of the
tire(s). Possible resulting loss of
vehicle control could lead to an
accident. ! Measuring and adjusting air
pressure to achieve proper in-
flation
Check and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month and
before any long journey. Check the
tire pressures when the tires are
cold. Use a pressure gauge to
adjust the tire pressures to the
specific values. Driving even a
short distance warms up the tires
and increases the tire pressures.
Also, the tire pressures are affected
by the outside temperature. It is
best to check tire pressure out-
doors before driving the vehicle.
When a tire becomes warm, the air
inside it expands, causing the tire
pressure to increase. Be careful not
to mistakenly release air from a
warm tire to reduce its pressure. & Glossary of tire terminology .
Accessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not). .
Bead
The part of the tire that is made of
steel wires, wrapped or reinforced
by ply cords and that is shaped to fit
the rim. .
Bead separation
A breakdown of the bond between
components in the bead. .
Bias ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate angles substantially
less than 90 degrees to the center-
line of the tread.
.
Carcass
The tire structure, except tread and sidewall rubber which, when in-
flated, bears the load. .
Chunking
The breaking away of pieces of the
tread or sidewall. .
Cold tire pressure
The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more. .
Cord
The strands forming the plies in the
tire. .
Cord separation
The parting of cords from adjacent
rubber compounds. .
Cracking
Any parting within the tread, side-
wall, or inner liner of the tire
extending to cord material. .
Curb weight
The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil and
coolant, and if so equipped, air
conditioning and additional weight
optional engine.Consumer information and Reporting safety defects/Tire information
– CONTINUED –13-5

Booster ........................................................ 7-35, 11-27
Disc ..................................................................... 12-9
Fluid ............................................................ 11-25, 12-7
Pad and lining ...................................................... 11-30
Parking ........................................................ 7-44, 11-30
Pedal .................................................................. 11-27
System ................................................................. 7-35
Brake pedal
Free play ............................................................. 11-27
Reserve distance .................................................. 11-28
Brake system ............................................................ 7-35
Warning light ......................................................... 3-21
Braking ..................................................................... 7-35
Tips...................................................................... 7-35
Breaking-in of new brake pads and linings ................... 11-30
BSD/RCTA ................................................................ 7-56
BSD/RCTA approach indicator light/warning buzzer .... 7-59
BSD/RCTA OFF switch ........................................... 7-61
BSD/RCTA warning indicator ................................... 7-60
Bulb
Chart .................................................................. 12-16
Replacing ............................................................. 11-44
C
Catalytic converter ....................................................... 8-3
Center
Console .................................................................. 6-5
Changing
Coolant ................................................................ 11-19
Flat tire ................................................................... 9-4
Oil and oil filter ..................................................... 11-15 Charge warning light ................................................... 3-17
CHECK ENGINE warning light/Malfunction indicator
light ....................................................................... 3-16
Checking
Brake pedal free play ............................................ 11-27
Brake pedal reserve distance ................................. 11-28
Clutch function ..................................................... 11-28
Clutch pedal free play ........................................... 11-28
Coolant level ........................................................ 11-18
Fluid level (brake fluid) .......................................... 11-25
Fluid level (clutch fluid) .......................................... 11-26
Fluid level (power steering fluid) ............................. 11-24
Fluid level (washer fluid) ........................................ 11-38
Oil level (engine oil) .............................................. 11-13
Child restraint systems ................................................ 1-21
Installation of a booster seat .................................... 1-28
Installation with ALR/ELR seatbelt ............................ 1-24
Lower and tether anchorages ................................... 1-29
Top tether anchorages ............................................ 1-32
Child safety ................................................................... 4
Locks .................................................................... 2-32
Chime
Key........................................................................ 3-5
Light ..................................................................... 3-94
Seatbelt. ................................................................ 3-14
Cigarette lighter ........................................................... 6-9
Cleaning
Aluminum
wheels ................................................... 10-3
Interior .................................................................. 10-5
Ventilation grille ....................................................... 4-9
Climate control system ................................................. 4-3 Index
14-3

Keyless access with push-button start system .. ............... 2-9
Disabling keyless access functions ........................... 2-16
Locking and unlocking doors ................................... 2-13
Opening trunk lid ................................................... 2-15
Warning chimes and warning light .................... 2-16, 3-28
When access key does not operate
properly ....................................... 2-18, 3-8, 7-14, 9-16
L
Lap belt pretensioner .................................................. 1-18
Leather seat materials ................................................ 10-5
License plate light ..................................................... 11-49
Light
Control switch ........................................................ 3-94
Daytime running. .................................................... 3-97
Dome ..................................................................... 6-2
Front fog ...................................................... 3-99, 11-47
Front position ................................................ 3-95, 3-99
Front side marker ................................................. 12-16
Ignition switch .......................................................... 3-6
License plate ........................................................ 11-49
Map ....................................................................... 6-2
Rear combination .................................................. 11-48
Rear side marker light ........................................... 11-48
Stop light ............................................................. 11-48
Tail light ............................................................... 11-48
Turn signal ................................................... 3-97, 11-48
Limited slip differential (LSD) ....................................... 7-33
Loading your vehicle .................................................. 8-10
Low fuel warning light ................................................. 3-24
Low tire pressure warning light .................................... 3-19 Lower and tether anchorage ........................................ 1-29
LSD (Limited slip differential) ........................................ 7-33
M
Maintenance
Precautions ........................................................... 11-3
Schedule ............................................................... 11-3
Seatbelt. ................................................................ 1-16
Tips ...................................................................... 11-6
Tools ...................................................................... 9-3
Malfunction indicator light (check engine warning light) .... 3-16
Manual
Climate control .................................................. 4-5, 4-6
Mode (continuously variable transmission) ................. 7-26
Seat ....................................................................... 1-4
Transmission ......................................................... 7-17
Transmission oil ........................................... 11-23, 12-6
Map light .................................................................... 6-2
Media operation ......................................................... 5-50
AUX. ..................................................................... 5-73
Bluetooth audio ...................................................... 5-60
CD ....................................................................... 5-50
iPod ...................................................................... 5-56
USB memory ......................................................... 5-53
Meters and gauges ...................................................... 3-8
Mirror defogger ........................................................ 3-112
Mirrors .................................................................... 3-103
Moonroof ...........................................................
2-38, 9-18
Multi function display ................................................... 3-48 Index
14-7

Tires and wheels. ...................................................... 11-31
Tools .......................................................................... 9-3
Top tether anchorages ........................................ 1-29, 1-32
Towing ...................................................................... 9-12
All wheels on the ground ........................................ 9-15
Flat-bed truck ........................................................ 9-14
Hooks ................................................................... 9-12
Trailer
Towing .................................................................. 8-12
Trip meter ................................................................... 3-9
Trunk lid ................................................................... 2-36
Release handle ..................................................... 2-37
Turn signal
Indicator lights ....................................................... 3-35
Lever .................................................................... 3-97
U
Under-floor storage compartment ................................. 6-12
Useful information ...................................................... 5-28
STARLINK ............................................................ 5-30
V
Valet mode ................................................................ 2-30
Vanity mirror ................................................................ 6-4
Vehicle
Capacity weight ..................................................... 8-11
Identification ........................................................ 12-18
Symbols .................................................................... 3
Vehicle Dynamics Control
OFF indicator light .................................................. 3-27
OFF switch ........................................................... 7-40 Operation indicator light ........................................... 3-26
System .................................................................. 7-38
Warning light .......................................................... 3-26
Ventilator .................................................................... 4-2
Voice command system operation ... ........................... 5-107
Voice command system ........................................ 5-107
W
Warning and indicator lights ......................................... 3-13
Warning chimes
Keyless access with push-button start system .... ........ 3-28
Warning light
ABS...................................................................... 3-20
Access key .................................................... 3-28, 3-29
All-Wheel Drive ...................................................... 3-25
AT OIL TEMP ......................................................... 3-18
Automatic headlight beam leveler ............................. 3-35
Brake system ......................................................... 3-21
Charge .................................................................. 3-17
CHECK ENGINE .................................................... 3-16
Door open ............................................................. 3-25
Driver ’ s Control Center Differential ............................ 3-36
Engine low oil level ................................................. 3-17
Hill start assist ....................................................... 3-24
Keyless access with push-button start system .... ........ 3-28
Low fuel ................................................................ 3-24
Low tire pressure .................................................... 3-19
Oil pressure ...........................................................
3-17
Power steering ....................................................... 3-25
Rear differential oil temperature ................................ 3-18
Seatbelt. ................................................................ 3-14 Index
14-11