fuel SUBARU WRX 2016 Service Manual

Starting and operating/Continuously variable transmission
by inertia with the select lever set
in a forward position or move the
vehicle forward by inertia with
the select lever set in the reverse
position. Doing so may result in
an unexpected accident or mal-
function.
. Do not shift from the “ D ” position
into the “ R ” position or vice
versa until the vehicle has com-
pletely stopped. Such shifting
may cause damage to the trans-
mission.
. When parking the vehicle, first
securely apply the parking brake
and then place the select lever in
the “ P ” position. Do not park for
a long time with the select lever
in any other position as doing so
could result in a dead battery.
NOTE . When the engine coolant tempera-
ture is still low, the transmission will
upshift to higher engine speeds than
when the coolant temperature is suffi-
ciently high in order to shorten the
warm-up time and improve driveability.
The gearshift timing will automatically
shift to the normal timing after the
engine has warmed up. . Immediately after transmission fluid
is replaced, you may feel that the
transmission operation is somewhat
unusual. This results from invalidation
of data which the on-board computer
has collected and stored in memory to
allow the transmission to shift at the
most appropriate times for the current
condition of your vehicle. Optimized
shifting will be restored as the vehicle
continues to be driven for a while.
. When driving a CVT model under
continuous heavy load conditions such
as when climbing a long, steep hill, the
engine speed or the vehicle speed may
automatically be reduced. This is not a
malfunction. This phenomenon results
from the engine control function main-
taining the cooling performance of the
vehicle. The engine and vehicle speed
will return to a normal speed when the
engine is able to maintain the optimum
cooling performance after the heavy
load decreases. Driving under a heavy
load must be performed with extreme
care.
. The continuously variable transmis-
sion is a chain type system that
provides superior transmission effi-
ciency for maximum fuel economy. At
times, depending on varying driving
conditions, a chain operating noise
may be heard that is characteristic of this type of system.
& Select lever
1) Select lever button7-24

“ ” appears, downshifting is possible.
When both indicators appear, upshifting
and downshifting are both possible. When
the vehicle stops (for example, at traffic
signals), the downshift indicator turns off.
Gearshifts can be performed using the
shift paddle behind the steering wheel.
To upshift to the next higher gear position,
pull the shift paddle that has “ + ” indicated
on it. To downshift to the next lower gear
position, pull the shift paddle that has “ – ”
indicated on it.
To deselect the manual mode, return the
select lever to the “ D ” position from the “ M ”
position. CAUTIONDo not place or hang anything on
the shift paddles. Doing so may
result in accidental gear shifting.
NOTE Please read the following points care-
fully and bear them in mind when using
the manual mode.
. If you attempt to shift down when
the engine speed is too high, i.e., when
a downshift would push the tachometer
needle beyond the red zone, beeps will
be emitted to warn you that the down-
shift is not possible.
. If you attempt to shift up when the
vehicle speed is too low, the transmis-
sion will not respond.
. You can perform a skip-shift (for
example, from 4th to 2nd) by operating
the shift paddle twice in rapid succes-
sion.
. The transmission automatically se-
lects 1st gear when the vehicle stops
moving.
. If the temperature of the transmis-
sion fluid becomes too high, the “ AT
OIL TEMP ” warning light on the combi-
nation meter will illuminate. Immedi-
ately stop the vehicle in a safe location and let the engine idle until the warning
light turns off.
. By selecting the Sport Sharp (S#)
mode, upshifting will not occur auto-
matically. According to the road condi-
tions, shift change manually so that the
tachometer needle does not enter the
red zone. Also, if the engine revolu-
tions reach the specified number, the
fuel supply will be cut. In this case,
perform shift up operation.
& Shift lock function The shift lock function helps prevent the
improper operation of the select lever.
. The select lever cannot be operated
unless the ignition switch is turned to the
“ ON ” position and the brake pedal is
depressed.
. The select lever cannot be moved from
the “ P ” position to any other position
before the brake pedal is depressed.
Depress the brake pedal first, and then
operate the select lever.
. Only the “ P ” position allows you to turn
the ignition switch from the “ ACC ” position
to the “ LOCK ” / “ OFF ” position and remove
the key from the ignition switch.
. If the ignition switch is turned to the
“ LOCK ” / “ OFF ” position while the select
lever is in the “ N ” position, the select leverStarting and operating/Continuously variable transmission
– CONTINUED –7-27

. Do not keep the vehicle in a stationary
position on an uphill grade by using the
“ D ” position. Use the brake instead.
. The engine may, on rare occasions,
knock when the vehicle rapidly acceler-
ates or rapidly pulls away from a standstill.
This phenomenon does not indicate a
malfunction.
SI-DRIVE (STI) SI-DRIVE (SUBARU Intelligent Drive)
works to maximize engine performance,
control and efficiency.
This system consists of three modes:
Intelligent (I), Sport (S), and Sport Sharp
(S#). By adjusting the SI-DRIVE selector,
the character of the power unit changes.
& Intelligent (I) mode ! For smooth, efficient performance
driving
The Intelligent (I) mode provides well-
balanced performance with greater fuel
efficiency and smooth driveability without
stress. Power delivery is moderate during
acceleration for maximum fuel efficiency. This is ideal for around-town driving and
situations that do not require full power
output. It provides better control in difficult
driving conditions, such as slippery roads
or loose surfaces, due to gentler throttle
response.
When the Intelligent (I) mode is selected,
a shift-up indicator “
” on the combina-
tion meter will blink to signal the best time
to shift gears for maximum fuel efficiency. Starting and operating/SI – DRIVE (STI)
– CONTINUED –7-29

mode, the SI-DRIVE mode will stay in
the same mode as when the engine
was turned off.
. While the engine is running, if the
CHECK ENGINE warning light/malfunc-
tion indicator light illuminates, the SI-
DRIVE mode changes to the Sport (S)
mode. In this case, it is not possible to
change to the Sport Sharp (S#) mode or
Intelligent (I) mode.
. If there is a possibility that the
engine could overheat because of a
temperature increase of the engine
coolant, it is not possible to change to
the Sport Sharp (S#) mode. While the
vehicle is in the Sport Sharp (S#) mode,
it changes to the Sport (S) mode when
the engine coolant temperature in-
creases.
. If any of the SI-DRIVE indicators
blink, the SI-DRIVE system may be
malfunctioning. Contact your SUBARU
dealer.
. While the engine is cool, you cannot
change to Sport Sharp (S#) mode. SI-DRIVE (except STI: CVT
models) SI-DRIVE (SUBARU Intelligent Drive)
works to maximize engine performance,
control and efficiency.
This system consists of three modes:
Intelligent (I), Sport (S), and Sport Sharp
(S#). By operating the SI-DRIVE switches,
the character of the power unit changes.
& Intelligent (I) mode ! For smooth, efficient performance
driving
The linear acceleration characteristic of
the Intelligent (I) mode is ideal for normal
driving usage. The Intelligent (I) mode provides well-
balanced performance with greater fuel
efficiency and smooth driveability without
stress. Power delivery is moderate during
acceleration for maximum fuel efficiency.
This is ideal for around-town driving and
situations that do not require full power
output. It provides better control in difficult
driving conditions, such as slippery roads
or loose surfaces, due to gentler throttle
response.
& Sport (S) mode ! For all-around performance driving
The Sport (S) mode provides the engine
power desired by those who want to make
the driving experience their own personal
adventure.Starting and operating/SI – DRIVE (except STI: CVT models)
– CONTINUED –7-31

New vehicle break-in driving – the first
1,000 miles (1,600 km) ..................................... 8-2
Fuel economy hints ............................................ 8-2
Engine exhaust gas (carbon monoxide) ............ 8-2
Catalytic converter .............................................. 8-3
Periodic inspections ........................................... 8-4
Driving in foreign countries ............................... 8-4
Driving tips for AWD models .............................. 8-5
Driving precaution ............................................... 8-6
Winter driving ...................................................... 8-6Operation during cold weather ............................. 8-6 Driving on snowy and icy roads ........................... 8-8
Corrosion protection ............................................ 8-9
Snow tires ........................................................... 8-9
Tire chains ........................................................ 8-10
Rocking the vehicle ........................................... 8-10
Loading your vehicle ......................................... 8-10Vehicle capacity weight ...................................... 8-11
GVWR and GAWR (Gross Vehicle Weight Rating
and Gross Axle Weight Rating) ........................ 8-12
Trailer towing ..................................................... 8-12
Driving tips
8

Driving tips/New vehicle break – in driving – the first 1,000 miles (1,600 km)
New vehicle break-in driving
– the first 1,000 miles (1,600
km) The performance and long life of your
vehicle are dependent on how you handle
and care for your vehicle while it is new.
Follow these instructions during the first
1,000 miles (1,600 km):
. Do not race the engine. And do not
allow engine speed to exceed 4,000 rpm
except in an emergency.
. Do not drive at one constant engine or
vehicle speed for a long time, either fast or
slow.
. Avoid starting suddenly and rapid
acceleration, except in an emergency.
. Avoid hard braking, except in an
emergency.
The same break-in procedures should be
applied to an overhauled engine, newly
mounted engine or when brake pads or
brake linings are replaced with new ones. Fuel economy hints The following suggestions will help to save
fuel.
. Select the proper gear position for the
speed and road conditions.
. Avoid sudden acceleration or decelera-
tion. Always accelerate gently until you
reach the desired speed. Then try to
maintain that speed for as long as
possible.
. Do not pump the accelerator and avoid
racing the engine.
. Avoid unnecessary engine idling.
. Keep the engine properly tuned.
. Keep the tires inflated to the correct
pressure shown on the tire placard, which
is located under the door latch on the
driver ’ s side. Low pressure will increase
tire wear and fuel consumption.
. Use the air conditioner only when
necessary.
. Keep the front and rear wheels in
proper alignment.
. Avoid carrying unnecessary luggage or
cargo.
. The indication of the ECO gauge
shows a reference for saving fuel. For
details, refer to “ ECO gauge ” F 3-12.Engine exhaust gas (carbon
monoxide) WARNING. Never inhale engine exhaust gas.
Engine exhaust gas contains
carbon monoxide, a colorless
and odorless gas which is dan-
gerous, or even lethal, if inhaled.
. Always properly maintain the en-
gine exhaust system to prevent
engine exhaust gas from enter-
ing the vehicle.
. Never run the engine in a closed
space, such as a garage, except
for the brief time needed to drive
the vehicle in or out of it.
. Avoid remaining in a parked
vehicle for a lengthy time while
the engine is running. If that is
unavoidable, then use the venti-
lation fan to force fresh air into
the vehicle.
. Always keep the front ventilator
inlet grille free from snow, leaves
or other obstructions to ensure
that the ventilation system al-
ways works properly.
. If at any time you suspect that8-2

exhaust fumes are entering the
vehicle, have the problem
checked and corrected as soon
as possible. If you must drive
under these conditions, drive
only with all windows fully open.
. Keep the trunk lid closed while
driving to prevent exhaust gas
from entering the vehicle.
NOTE Due to the expansion and contraction
of the metals used in the manufacture
of the exhaust system, you may hear a
crackling sound coming from the ex-
haust system for a short time after the
engine has been shut off. This sound is
normal. Catalytic converter
STI
Except STI
The catalytic converter is installed in the
exhaust system. It serves as a catalyst to reduce HC, CO and NOx in exhaust
gases, thus providing cleaner exhaust.
To avoid damage to the catalytic conver-
ter:
. Use only unleaded fuel. Even a small
amount of leaded fuel will damage the
catalytic converter.
. Never start the engine by pushing or
pulling the vehicle.
. Avoid racing the engine.
. Never turn off the ignition switch while
the vehicle is moving.
. Keep your engine tuned-up. If you feel
the engine running rough (misfiring, back-
firing or incomplete combustion), have
your vehicle checked and repaired by an
authorized SUBARU dealer.
. Do not apply undercoating or rust
prevention treatment to the heat shield of
catalytic converter and the exhaust sys-
tem.
. Do not drive with an extremely low fuel
level.
WARNING
. Avoid fire hazards. Do not drive
or park the vehicle anywhere
near flammable materials (e.g.,
grass, paper, rags or leaves),
because the catalytic converter Driving tips/Catalytic converter
– CONTINUED –8-3

Driving tips/Periodic inspections
operates at very high tempera-
tures.
. Keep everyone and flammable
materials away from the exhaust
pipe while the engine is running.
The exhaust gas is very hot.
Periodic inspections To keep your vehicle in the best condition
at all times, always have the recom-
mended maintenance services listed in
the maintenance schedule in the “ War-
ranty and Maintenance Booklet ” per-
formed at the specified time or mileage
intervals.
Driving in foreign countries When planning to use your vehicle in
another country:
. Confirm the availability of the correct
fuel. Refer to “ Fuel requirements ” F 7-3.
. Comply with all regulations and re-
quirements of each country.
8-4

Driving tips/Winter driving
or ice buildup on the suspension,
disc brakes and brake hoses
underneath the vehicle. If there
is caked snow or ice, remove it,
being careful not to damage the
disc brakes and brake hoses and
ABS harness.
When parking for long periods in cold
weather, you should observe the following
tips.
1. For MT models, place the shift lever in
the “ 1 ” or “ R ” position. For CVT models,
place the select lever in the “ P ” position.
2. Use tire stops under the tires to
prevent the vehicle from moving.
! Refueling in cold weather
To help prevent moisture from forming in
the fuel system and the risk of its freezing,
use of an antifreeze additive in the fuel
tank is recommended during cold weather.
Use only additives that are specifically
designed for this purpose. When an
antifreeze additive is used, its effect lasts
longer if the tank is refilled whenever the
fuel level reaches half empty.
If your SUBARU is not going to be used
for an extended period, it is best to have
the fuel tank filled to capacity. & Driving on snowy and icy
roads To prevent skidding and slipping, avoid
sudden braking, abrupt acceleration, high-
speed driving, and sharp turning when
driving on snowy or icy roads.
Always maintain ample distance between
your vehicle and the vehicle ahead of you
to avoid the need for sudden braking.
To supplement the foot brake, use the
engine brake effectively to control the
vehicle speed. (Shift into a lower gear
when necessary.)
Avoid shifting down abruptly. Such beha-
vior can cause the wheels to lock, possibly
leading to loss of vehicle control.
An anti-lock brake system (ABS) en-
hances your vehicle ’ s braking perfor-
mance on snowy and icy roads. For
information on braking on slippery sur-
faces, refer to “ ABS (Anti-lock Brake
System) ” F 7-36 and “ Vehicle Dynamics
Control system ” F 7-38.
WARNING
Do not use the cruise control on
slippery roads such as snowy or icy
roads. This may cause loss of
vehicle control. CAUTIONAvoid prolonged continuous driving
in snowstorms. Snow will enter the
engine ’ s intake system and may
hinder the airflow, which could re-
sult in engine shutdown or even
breakdown.
! Wiper operation when snowing
Before driving in cold weather, make sure
the wiper blades are not frozen to the
windshield or rear window.
If the wiper blades are frozen to the
windshield, use the defroster and the
temperature set for maximum warmth until
the wiper blades are completely thawed.
Refer to “ Climate control ” F 4-1.
If your vehicle is equipped with a wiper
deicer, use it. It is helpful to thaw the
windshield wiper blades. Refer to “ Defog-
ger and deicer ” F 3-112.
When driving in snow, if frozen snow starts
to stick on the surface of the windshield
despite wiper operation, use the defroster
and the temperature set for maximum
warmth. After the windshield gets warmed
enough to melt the frozen snow on it,
wash it away using the windshield washer.
Refer to “ Windshield washer ” F 3-103.8-8

possible.
. Stow cargo and luggage in the
trunk whenever possible.
. To prevent cargo and luggage
from sliding forward during brak-
ing, do not stack anything in the
enlarged trunk. Keep cargo and
luggage low, as close to the floor
as possible.
. When you carry something inside
the vehicle, secure it whenever
you can to prevent it from being
thrown around inside the vehicle
during sudden stops, sharp turns
or in an accident.
. Do not pile heavy loads on the
roof. These loads raise the vehi-
cle ’ s center of gravity and make it
more prone to tip over.
. Secure lengthy items properly to
prevent them from shooting for-
ward and causing serious injury
during a sudden stop.
. Never exceed the maximum load
limit. If you do, some parts on
your vehicle can break, or it can
change the way your vehicle
handles. This could result in loss
of control and cause personal
injury. Also, overloading can
shorten the life of your vehicle. . Do not place cargo or luggage in
or on the following locations as
the item may get under the
clutch, brake, or accelerator ped-
al and prevent the pedals from
being depressed properly, block
the driver ’ s vision, or hit the
driver or passengers, causing
an accident:
– At the feet of the driver
– On the front passenger or rear
seats (when stacking items)
– On the rear shelf
– On the instrument panel
– On the dashboard
CAUTION
Do not carry spray cans, containers
with flammable or corrosive liquids
or any other dangerous items inside
the vehicle.
NOTE For better fuel economy, do not carry
unneeded cargo. & Vehicle capacity weight
Vehicle placard
The load capacity of your vehicle is
determined by weight, not by available
cargo space. The maximum load you can
carry in your vehicle is shown on the
vehicle placard attached to the driver ’ s
side door pillar. It includes the total weight
of the driver and all passengers and their
belongings, any optional equipment such
as a roof rack or bike carrier, etc. Driving tips/Loading your vehicle
– CONTINUED –8-11