2016 SUBARU IMPREZA check engine

Maintenance and service/Brake booster
Brake booster
If the brake booster does not operate as
described in the following, have it checked
by your SUBARU dealer.
1. With the ignition switch in the“LOCK” /
“ OFF ”position, 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.
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)
Turn the ignition switch to the “LOCK”/
“OFF ”position 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.
&
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.
11-18

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.
Hill start assist system
Ensure that the Hill start assist system
operates properly under the following
circumstances.
1. Stop the vehicle on an uphill grade by
depressing the brake pedal (all models)
and clutch pedal (MT models only), with
the engine running.
2. Make sure that the vehicle does not
move backward for several seconds after
the brake pedal is released.
3. Then make sure the vehicle starts
climbing the grade by following the normal
starting procedures.
If the Hill start assist system does not
operate as described above, contact your
SUBARU dealer.
Maintenance and service/Clutch pedal (MT models)11-19

When there is only a small amount of
washer fluid remaining, the windshield
washer fluid warning light will illuminate.
When this occurs, refill the washer fluid.
&Adding the windshield
washer fluid
CAUTION
Never use engine coolant as washer
fluid because it could cause paint
damage.
Remove the washer tank filler cap, then
add windshield washer fluid until it
reaches the “FULL”mark on the tank.
& Windshield washer fluid
Use windshield washer fluid. 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.
Washer Fluid
Concentration Freezing
Temperature
30% 10.48F( −12 8C)
50% −48F( −20 8C)
100% −498F( −45 8C)
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 a 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. Otherwise, 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 concen-
tration appropriately for the out-
side temperature. If the concen-
tration is inappropriate, sprayed
washer fluid may freeze on the
windshield and obstruct your
view, and the fluid may freeze in
the reservoir tank.
. State or local regulations on
volatile organic compounds may
restrict the use of methanol, a
common windshield washer anti-
freeze additive. Washer fluids
containing non-methanol anti-
freeze agents should be used
only if they provide cold weather
protection without damaging
your vehicle ’s paint, wiper blades
or washer system.
Maintenance and service/Windshield washer fluid11-29

Specifications/Specifications
&Engine oil
For the checking, adding and replacing procedure or other details, refer to “Engine oil ”F 11-8.
NOTEThe 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.
! 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

Bottle holder................................................................ 6-7
Brake Assist ................................................................... 7-31
Booster ........................................................ 7-31, 11-18
Disc ..................................................................... 12-9
Fluid ............................................................ 11-16, 12-7
Pad and lining ...................................................... 11-20
Parking ........................................................ 7-40, 11-21
Pedal .................................................................. 11-18
System ................................................................. 7-31
Brake system ............................................................ 7-31
Warning light ......................................................... 3-21
Braking ..................................................................... 7-31
Tips...................................................................... 7-31
Breaking-in of new brake pads and linings ................... 11-20
BSD/RCTA ................................................................ 7-50
Approach indicator light/warning buzzer .................... 7-54
OFF indicator ................................................ 3-32, 7-56
OFF switch ........................................................... 7-56
Warning indicator ........................................... 3-32, 7-55
Warning volume ..................................................... 3-42
Bulb
Chart .................................................................. 12-14
Replacement ........................................................ 11-36
C
Cargo area Cover ................................................................... 6-12
Light ............................................................. 6-2, 11-42
Tie-down hooks ..................................................... 6-14
Catalytic converter ....................................................... 8-3 Center console
............................................................ 6-6
Changing Coolant ............................................................... 11-12
Flat tire .................................................................. 9-6
Oil and oil filter ....................................................... 11-9
Charge warning light ................................................... 3-18
CHECK ENGINE warning light/Malfunction indicator light ....................................................................... 3-16
Checking
Brake pedal free play ............................................ 11-18
Brake pedal reserve distance ................................. 11-18
Clutch function ..................................................... 11-19
Clutch pedal free play ........................................... 11-19
Coolant level ........................................................ 11-11
Fluid level (brake fluid) .......................................... 11-16
Fluid level (clutch fluid) .......................................... 11-17
Fluid level (washer fluid) ........................................ 11-28
Oil level (engine oil) ................................................ 11-8
Child restraint systems ................................................ 1-25
Installation of a booster seat .................................... 1-32
Installation with ALR/ELR seatbelt ............................ 1-28
Lower and tether anchorages ................................... 1-33
Top tether anchorages ............................................ 1-36
Child safety ................................................................... 4
Locks .................................................................... 2-35
Chime Ke

y........................................................................\
3-5
Light ..................................................................... 3-89
Seatbelt. ................................................................ 3-14
Cigarette lighter ........................................................... 6-9
Index14-3

L
Lap belt pretensioner.................................................. 1-22
Leather seat materials ................................................ 10-5
License plate light ..................................................... 11-41
Light Backup ................................................................ 11-38
Cargo area .................................................... 6-2, 11-42
Control switch ........................................................ 3-89
Daytime running. .................................................... 3-92
Dome ........................................................... 6-2, 11-42
Front fog ...................................................... 3-94, 11-38
Front side marker ......................................... 3-89, 12-14
Ignition switch .......................................................... 3-6
License plate ........................................................ 11-41
Map ............................................................. 6-3, 11-42
Parking ................................................................ 11-38
Rear combination .................................................. 11-38
Rear side marker light ........................................... 11-38
Stop .................................................................... 11-38
Tail...................................................................... 11-38
Trunk ................................................................... 11-43
Turn signal ................................................... 3-92, 11-38
Loading your vehicle .................................................. 8-12
Low fuel warning light ................................................. 3-22
Low tire pressure warning light .................................... 3-19
Lower and tether anchorage ........................................ 1-33
M
Maintenance Precautions ........................................................... 11-3
Schedule .............................................................. 11-3 Seatbelt.
................................................................ 1-20
Tools ...................................................................... 9-3
Malfunction indicator light (check engine warning light) .... 3-16
Manual Mode (continuously variable transmission) ................. 7-26
Transmission ......................................................... 7-22
Transmission oil ................................................... 11-14
Map light ........................................................... 6-3, 11-42
Maximum load limits ................................................... 8-19
Meters and gauges ...................................................... 3-9
Mirror defogger ........................................................ 3-108
Mirrors .................................................................... 3-100
Moonroof ................................................................... 2-42
Multi function display ................................................... 3-42
Multi information display .............................................. 3-38
N
New vehicle break-in driving ......................................... 8-2
O
Odometer .................................................................. 3-10
Off road driving ........................................................... 8-6
Oil filter ..................................................................... 11-9
Oil level Engine .................................................................. 11-8
Warning light .......................................................... 3-18
Oil pressure warning light ............................................ 3-18
Outside Mirror defogger .................................................... 3-108
Mirrors ................................................................
3
-108
Temperature indicator ...................................... 3-33, 3-47
Index14-7

Vehicle Dynamics ControlOFF indicator light .................................................. 3-25
OFF switch ........................................................... 7-36
Operation indicator light .......................................... 3-24
System ................................................................. 7-34
Warning light ......................................................... 3-24
Ventilator .................................................................... 4-2
Voice command operation ........................................... 5-82
W
Warning and indicator lights ........................................ 3-13
Warning chimes Keyless access with push-button start system ........... 3-25
Seatbelt ................................................................ 3-14
Warning light ABS ..................................................................... 3-21
Access key ........................................................... 3-25
All-Wheel Drive ...................................................... 3-23
AT OIL TEMP ........................................................ 3-19
Automatic headlight beam leveler ............................. 3-31
Brake system ........................................................ 3-21
Charge ................................................................. 3-18
CHECK ENGINE ................................................... 3-16
Coolant temperature high ........................................ 3-17
Door open ............................................................. 3-23
Engine low oil level ................................................ 3-18
Hill start assist ....................................................... 3-22
Keyless access with push-button start system ........... 3-25
Low fuel ................................................................ 3-22
Low tire pressure ................................................... 3-19
Oil pressure .......................................................... 3-18 Power steering
....................................................... 3-23
Seatbelt. ................................................................ 3-14
SRS airbag system ................................................. 3-15
Vehicle Dynamics Control ........................................ 3-24
Windshield washer fluid ........................................... 3-19
Warranties ..................................................................... 1
Warranties and maintenance ........................................ 8-19
Washing .................................................................... 10-2
Waxing and polishing .................................................. 10-3
Wear indicators ........................................................ 11-25
Welcome lighting function ............................................ 3-90
Wheel Aluminum ............................................................ 11-28
Balance ............................................................... 11-25
Nut tightening torque ............................................... 12-8
Replacement. ....................................................... 11-28
Windows ................................................................... 2-35
Windshield Washer fluid. ........................................................ 11-28
Wiper and washer switches ..................................... 3-97
Wiper blades ........................................................ 11-30
Wiper deicer ........................................................ 3-108
Winter Driving ................................................................... 8-8
Tires ........................................................... 8-10, 11-21
Wiper and washer ......................................................
3
-96
Wiper deicer ............................................................ 3-108
Index14-11