2016 SUBARU IMPREZA engine

Engine overheating
WARNING
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has fully cooled down.
When the engine is hot, the coolant
is under pressure. Removing the
cap while the engine is still hot
could release a spray of boiling hot
coolant, which could burn you very
seriously.
If the engine overheats, safely pull off the
road and stop the vehicle in a safe
location.
& If steam is coming from the
engine compartment
. Turn the ignition switch to the “LOCK”/
“OFF ”position and get everyone away
from the vehicle until it cools down.
. Contact an authorized SUBARU deal-
er.
& If no steam is coming from
the engine compartment
1. Keep the engine running at idling
speed. 2. Open the engine hood to ventilate the
engine compartment. Refer to
“Engine
hood ”F 11-5.
Confirm that the cooling fan is turning. If
the fan is not turning, immediately turn off
the engine and contact an authorized
SUBARU dealer for repair.
3. After the coolant temperature high
warning light that has blinked or illumi-
nated in REDturns off, turn off the engine.
For details about the warning light, refer to
“Coolant temperature low indicator light/
Coolant temperature high warning light ”
F 3-17.
4. After the engine has fully cooled down,
check the coolant level in the reserve
tank. If the coolant level is below the
“LOW ”mark, add coolant up to the “FULL ”
mark.
NOTE
For details about how to check the
coolant level or how to add coolant,
refer to “Engine coolant ”F 11-11.
5. If there is no coolant in the reserve
tank, add coolant to the reserve tank.
Then remove the radiator cap and fill the
radiator with coolant.
If you remove the radiator cap from a hot
radiator, first wrap a thick cloth around the
radiator cap, then turn the cap counter- clockwise slowly without pressing down
until it stops. Release the pressure from
the radiator. After the pressure has been
fully released, remove the cap by pressing
down and turning it.
In case of emergency/Engine overheating9-13

properly with safety chains. Each safety
chain should be equally tightened and
care must be taken not to pull the chains
so tightly that the suspension bottoms out.
CAUTION
If your vehicle has a front under-
spoiler and rear underspoiler (both
optional), be careful not to scrape
them when placing the vehicle on
the carrier and when removing the
vehicle from the carrier.
&Towing with all wheels on the
ground
1. Release the parking brake and put the
transmission in the “N”position.
2. The ignition switch should be in the
“ON ”position while the vehicle is being
towed.
3. Take up slack in the towline slowly to
prevent damage to the vehicle.
WARNING
. Never turn the ignition switch to
the “LOCK ”/“OFF ”position while
the vehicle is being towed be-
cause the steering wheel and the
direction of the wheels will be
locked. .
Remember that the brake booster
and power steering do not func-
tion when the engine is not
running. Because the engine is
turned off, it will take greater
effort to operate the brake pedal
and steering wheel.
CAUTION
. If transmission failure occurs,
transport your vehicle on a flat-
bed truck.
. For CVT models, the traveling
speed must be limited to less
than 20 mph (30 km/h) and the
traveling distance to less than 31
miles (50 km). For greater speeds
and distances, transport your
vehicle on a flat-bed truck.
In case of emergency/Towing9-17

In case of emergency/Access key–if access key does not operate properly
Access key –if access key
does not operate properly
CAUTION
Keep metallic objects, magnetic
sources and signal transmitters
away from the area between the
access key and the push-button
ignition switch. They may interfere
with the communication between
the access key and the push-button
ignition switch.
If the locking/unlocking procedures, power
switch procedures or engine start proce-
dures cannot be operated because of
strong radio signals in the surrounding
area or a low battery condition of the
access key, perform the following proce-
dure. When the battery of the access key
is discharged, replace it with a new one.
Refer to “Replacing battery of access key ”
F 11-44.
& Locking and unlocking
1) Release button
2) Mechanical key
While pressing the release button of the
access key, take out the mechanical key.
Lock or unlock the driver ’s door with the
mechanical key in the procedure de-
scribed in “Locking and unlocking from
the outside ”F 2-5.
NOTE
After locking or unlocking, be sure to
attach the mechanical key back to the
access key.
& Switching power
1. Apply the parking brake.
2. Shift the select lever into the “P ”
position.
3. Depress the brake pedal.
4. Hold the access key with the buttons
facing you, and touch the push-button
ignition switch with it.
When the communication between the
access key and the vehicle is completed,
a chime (ding) will sound. At the same
time, the status of the push-button ignition
switch changes to either of the following.
.When the keyless access with push-
button start system is deactivated:
“ACC ”
. Under other conditions: “ON ”
5. When the keyless access with push-
9-18

button start system is deactivated, press
the push-button ignition switch with the
brake pedal released. The status of the
push-button ignition switch then changes
to“ON ”.
NOTE
If the power does not switch even
though the above procedure was fol-
lowed precisely, contact your SUBARU
dealer.
&Starting engine
1. Apply the parking brake.
2. Shift the select lever into the “P ”
position.
3. Depress the brake pedal.
4. Hold the access key with the buttons facing you, and touch the push-button
ignition switch with it.
When the communication between the
access key and the vehicle is completed,
a chime (ding) will sound. At the same
time, the push-button ignition switch turns
to the
“ACC”or “ON ”position.
5. After the push-button ignition switch
turns to the “ACC ”or “ON ”position, while
depressing the brake pedal, press the
push-button ignition switch.
NOTE
If the engine does not start even
though the above procedure was fol-
lowed precisely, contact your SUBARU
dealer.
Rear gate –if the rear gate
cannot be opened
In the event that you cannot open the rear
gate by operating the rear gate opener
button, you can open it from inside the
cargo area.
1. Remove the access cover at the
bottom-center of the rear gate trim using
a flat-head screwdriver wrapped with vinyl
tape or a cloth.
2. Locate the rear gate open lever behind
the rear gate trim panel.
In case of emergency/Rear gate –if the rear gate cannot be opened
–CONTINUED –9-19

In case of emergency/If your vehicle is involved in an accident
CAUTION
Never operate the rear gate open
lever with fingers because doing so
may cause an injury. Always use a
flat-head screwdriver or a similar
tool.
3. To open the rear gate, turn the lever to
the right position using a flat-head screw-
driver or a similar tool.
If your vehicle is involved in
an accident
CAUTION
If your vehicle is involved in an
accident, be sure to inspect the
ground under the vehicle before
restarting the engine. If you find that
fuel has leaked on the ground, do
not try to restart the engine. The fuel
system has been damaged and is in
need of repair. Immediately contact
the nearest automotive service facil-
ity. We recommend that you consult
your SUBARU dealer.
Your vehicle has a fuel pump shut off
system. When the vehicle sustains an
impact in an accident, etc., the fuel pump
shut off system stops supplying the fuel in
order to minimize fuel leakage.
Perform the following procedures to re-
start the engine after the system is
activated.
Models without “keyless access with
push-button start system ”:
1. Turn the ignition switch to the “LOCK”
or “ACC ”position.
2. Restart the engine. Models with
“keyless access with
push-button start system ”:
1. Turn the push-button ignition switch to
the “ACC ”or “OFF ”position.
2. Restart the engine.
9-20

Appearance care/Exterior care
Exterior care
&Washing
CAUTION
. When washing the vehicle, the
brakes may get wet. As a result,
the brake stopping distance will
be longer. To dry the brakes,
drive the vehicle at a safe speed
while lightly depressing the
brake pedal to heat up the
brakes.
. Do not wash the engine compart-
ment and area adjacent to it. If
water enters the engine air intake
or electrical parts, it will cause
engine trouble or a malfunction
of electrical equipment.
. Do not use any organic solvents
when washing the surface of the
bulb assembly cover. However, if
a detergent with organic solvents
is used to wash the cover sur-
face, completely rinse off the
detergent with water. Otherwise,
the cover surface may be da-
maged.
. For 5-door models, since your
vehicle is equipped with a rear
wiper, automatic car-wash brushes could become tangled
around it, damaging the wiper
arm and other components. Ask
the automatic car-wash operator
not to let the brushes touch the
wiper arm or to fix the wiper arm
on the rear window glass with
adhesive tape before operating
the machine.
NOTE
When having your vehicle washed in
an automatic car wash, make sure
beforehand that the car wash is of
suitable type.
The best way to preserve your vehicle’
s
beauty is frequent washing. Wash the
vehicle at least once a month to avoid
contamination by road grime.
Wash dirt off with a wet sponge and plenty
of lukewarm or cold water. Do not wash
the vehicle with hot water and in direct
sunlight.
Salt, chemicals, insects, tar, soot, tree
sap, and bird droppings should be washed
off by using a light detergent, as required.
If you use a light detergent, make certain
that it is a neutral detergent. Do not use
strong soap or chemical detergents. All
cleaning agents should be promptly flushed from the surface and not allowed
to dry there. Rinse the vehicle thoroughly
with plenty of lukewarm water. Wipe the
remaining water off with a chamois or soft
cloth.
!
Washing the underbody
Chemicals, salts and gravel used for
deicing road surfaces are extremely cor-
rosive, accelerating the corrosion of un-
derbody components, such as the exhaust
system, fuel and brake lines, brake
cables, floor pan and fenders, and sus-
pension.
Thoroughly flush the underbody and in-
side of the fenders with lukewarm or cold
water at frequent intervals to reduce the
harmful effects of such agents.
Mud and sand adhering to the underbody
components may accelerate their corro-
sion.
After driving off-road or on muddy or
sandy roads, wash the mud and sand off
the underbody. Carefully flush the suspen-
sion and axle parts, as they are particu-
larly prone to mud and sand buildup. Do
not use a sharp-edged tool to remove
caked mud.
10-2

CAUTION
.Be careful not to damage brake
hoses, sensor harnesses, and
other parts when washing sus-
pension components.
. Be careful not to flush the engine
bottom for a long time. It may
cause damage of some electrical
parts.
! Using a warm water washer
. Keep a good distance of 12 in (30 cm)
or more between the washer nozzle and
the vehicle.
. Do not wash the same area continu-
ously.
. If a stain will not come out easily, wash
by hand. Some warm water washers are
of the high temperature, high pressure
type, and they can damage or deform the
resin parts such as moldings, or cause
water to leak into the vehicle.
& Waxing and polishing
Always wash and dry the vehicle before
waxing and polishing.
Use a good quality polish and wax and
apply them according to the manufac-
turer ’s instructions. Wax or polish when
the painted surface is cool. Be sure to polish and wax the chrome trim,
as well as the painted surfaces. Loss of
wax on a painted surface leads to loss of
the original luster and also quickens the
deterioration of the surface. It is recom-
mended that a coat of wax be applied at
least once a month, or whenever the
surface no longer repels water.
If the appearance of the paint has dimin-
ished to the point where the luster or tone
cannot be restored, lightly polish the
surface with a fine-grained compound.
Never polish just the affected area, but
include the surrounding area as well.
Always polish in only one direction. A
No. 2000 grain compound is recom-
mended. Never use a coarse-grained
compound. Coarse-grained compounds
have a smaller grain-size number and
could damage the paint. After polishing
with a compound, coat with wax to restore
the original luster. Frequent polishing with
acompoundoranincorrectpolishing
technique will result in removing the paint
layer and exposing the undercoat. When
in doubt, it is always best to contact your
SUBARU dealer or an auto paint specia-
list.
CAUTION
Do not use any agents with organic
solvents on the surface of the bulb
assembly cover. However, if a polish
or wax with organic solvents is
applied to the cover surface, com-
pletely wipe off the polish or wax.
Otherwise, the cover surface may be
damaged.
NOTE
Be careful not to block the windshield
washer nozzles with wax when waxing
the vehicle.
&
Cleaning aluminum wheels
. Promptly wipe the aluminum wheels
clean of any kind of grime or agent. If dirt
is left on too long, it may be difficult to
clean off.
. Do not use soap containing grit to
clean the wheels. Be sure to use a neutral
cleaning agent, and later rinse thoroughly
with water. Do not clean the wheels with a
stiff brush or expose them to a high-speed
washing device.
. Clean the vehicle (including the alumi-
num wheels) with water as soon as
possible when it has been splashed with
sea water, exposed to sea breezes, or
driven on roads treated with salt or other
agents.
Appearance care/Exterior care10-3

Maintenance schedule....................................... 11-3
Maintenance precautions ................................... 11-3
Before checking or servicing in the engine
compartment .................................................... 11-4
When checking or servicing in the engine compartment .................................................... 11-4
When checking or servicing in the engine compartment while the engine is running .......... 11-5
Engine hood....................................................... 11-5
Engine compartment overview .......................... 11-7
Engine oil ............................................................ 11-8
Engine oil consumption ...................................... 11-8
Locations of the oil level gauge, oil filler cap and oil filter ............................................................ 11-8
Checking the oil level ......................................... 11-8
Changing the oil and oil filter .............................. 11-9
Recommended grade and viscosity .................. 11-10
Synthetic oil ..................................................... 11-10
Cooling system ................................................ 11-10Safety precautions ........................................... 11-10
Cooling fan, hose and connections ................... 11-11
Engine coolant ................................................. 11-11
Air cleaner element .......................................... 11-12Replacing the air cleaner element ..................... 11-13
Spark plugs...................................................... 11-14Recommended spark plugs .............................. 11-14
Drive belts........................................................ 11-14
Manual transmission oil .................................. 11-14
Recommended grade and viscosity .................. 11-14
Continuously variable transmission fluid ....... 11-15Front differential gear oil (CVT models)
......... 11-15
Recommended grade and viscosity.................. 11-15
Rear differential gear oil.................................. 11-15Recommended grade and viscosity .................. 11-15
Brake fluid........................................................ 11-16Checking the fluid level .................................... 11-16
Recommended brake fluid ............................... 11-16
Clutch fluid (MT models)................................. 11-17Checking the fluid level.................................... 11-17
Recommended clutch fluid ............................... 11-17
Brake booster.................................................. 11-18
Brake pedal ...................................................... 11-18
Checking the brake pedal free play .................. 11-18
Checking the brake pedal reserve distance ....... 11-18
Clutch pedal (MT models) ............................... 11-19Checking the clutch function ............................ 11-19
Checking the clutch pedal free play .................. 11-19
Hill start assist system.................................... 11-19
Replacement of brake pad and lining ............ 11-20
Breaking-in of new brake pads and linings ....... 11-20
Parking brake stroke ....................................... 11-21
Tires and wheels .............................................. 11-21
Types of tires................................................... 11-21
Tire pressure monitoring system (TPMS) (if equipped) ...................................................... 11-21
Tire inspection ................................................. 11-23
Tire pressures and wear .................................. 11-23
Wheel balance ................................................. 11-25
Wear indicators ............................................... 11-25
Tire rotation direction mark .............................. 11-26
Maintenance and service
11