ECU SUBARU IMPREZA 2016 5.G Repair Manual

&Roof molding and crossbar
(5-door models —if
equipped)
CAUTION
. For cargo carrying purposes, the
roof molding must be used to-
gether with a roof crossbar kit
and the appropriate carrying at-
tachment. Otherwise, damage to
the roof or paint or a dangerous
road hazard due to loss of cargo
could result.
. When using the roof crossbar kit,
make sure that the total weight of
the crossbars, carrying attach-
ment and cargo does not exceed
the maximum load limit. Over- loading may cause damage to
the vehicle and create a safety
hazard.
Cargo can be carried after securing the
roof crossbar kit to the roof molding and
installing the appropriate carrying attach-
ment. When installing the roof crossbar
kit, follow the manufacturer ’s instructions.
When you carry cargo on the roof using
the roof crossbar kit and a carrying
attachment, never exceed the maximum
load limit as explained below. You should
also be careful that your vehicle does not
exceed the Gross Vehicle Weight Rating
(GVWR) and front and rear Gross Axle
Weight Rating (GAWR). For information
about loading cargo into or onto your
vehicle, refer to “Loading your vehicle”
F 8-12. The maximum load limit of the
cargo, crossbars and carrying attachment
must not exceed 176 lbs (80 kg). Place
the heaviest load at the bottom, nearest
the roof, and evenly distribute the cargo.
Always properly secure all cargo. !
Installing carrying attachments on
the crossbars
When installing any carrying attachment
such as a bike carrier, ski carrier, kayak
carrier, cargo basket, etc. on the cross-
bars, follow the manufacturer ’s instruc-
tions and make sure that the attachment is
securely fixed to the crossbars. Use only
attachments designed specifically for the
crossbars. A set of the crossbars is
designed to carry loads (cargo and attach-
ment) of not more than 165 lbs (75 kg).
Before operating the vehicle, make sure
that the cargo is properly secured on the
attachment.
NOTE
Remember that the vehicle ’s center of
gravity is altered with the weight of the
load on the roof, thus affecting the
driving characteristics.
Drive carefully. Avoid rapid starts, hard
cornering and abrupt stops. Crosswind
effects will be increased.
Driving tips/Loading your vehicle
–CONTINUED –8-15

dealer for purchase of a standard
bumper beam if you do not have
the original.
. Safety performance is decreased
and there is increased risk of
injury to passengers in the case
of an accident if the trailer hitch
or a standard bumper beam is
not installed. One of them must
always be installed on the vehi-
cle.
. If a trailer hitch is installed, it is
not possible to install the rear
towing hook.
The maximum gross trailer weight and
maximum gross tongue weight are indi-
cated in the following table.
Maximum
gross trailer
weight Maximum
gross ton-
gue weight
Crosstrek models 1,500 lbs
(680 kg) 200 lbs
(90 kg)
When towing a trailer, refer to “Trailer
towing (Crosstrek models) ”F 8-18.
& Connecting a trailer
1) Ball mount
2) Hitch pin
3) Safety pin
A) Hitch receiver tube
1. Insert the ball mount into the hitch receiver tube.
2. Insert the hitch pin into the hole
located on the hitch receiver tube so that
the pin passes through the ball mount.
3. Insert the safety pin through the hole
located on the hitch pin securely.
4. Check the ball mount assembly by
pulling on it to make sure it does not come
off the hitch receiver.
1) Hitch ball installation point
2) Hooks for safety chains
5. Attach a hitch ball. Use only a hitch
ball that is appropriate for the ball mount
and your trailer. The hitch ball must be
securely installed on the ball mount.
6. Connect your trailer to the hitch ball.
7. Connect the trailer and the hitch with
safety chains that will hold the trailer
’s
Driving tips/Trailer hitch (Crosstrek models —dealer option)
–CONTINUED –8-17

manufacturer.
SUBARU assumes no responsibility for
injuries or vehicle damage that result from
trailer towing equipment, or from any
errors or omissions in the instructions
accompanying such equipment or for your
failure to follow the proper instructions.
Regularly check that the hitch mounting
bolts and nuts are tightened securely.
&Warranties and maintenance
SUBARU warranties do not apply to
vehicle damage or malfunction caused
by trailer towing. If you use your vehicle to
tow a trailer, more frequent maintenance
will be required due to the additional load.
(Refer to “Maintenance schedule under
severe driving conditions ”in the “Warranty
and Maintenance Booklet ”.)
Under no circumstances should a trailer
be towed with a new vehicle or a vehicle
with any new powertrain component (en-
gine, transmission, differential, wheel
bearings, etc.) for the first 1,000 miles
(1,600 km) of driving.
& Maximum load limits
WARNING
Never exceed the maximum load
limits explained in the following.
Exceeding the maximum load limits
could cause personal injury and/or
vehicle damage.
CAUTION
. Adequate size trailer brakes are
required when the trailer and its
cargo exceed 1,000 lbs (453 kg)
total weight.
. Before towing a trailer, check the
trailer total weight, GVW, GAWs
and tongue load. Make sure the
load and its distribution in your
vehicle and trailer are accepta-
ble. !
Total trailer weight
Total trailer weight
The total trailer weight (trailer weight plus
its cargo load) must never exceed the
maximum total trailer weight in the follow-
ing table.
Driving tips/Trailer towing (Crosstrek models)
–CONTINUED –8-19

Certification label
GVWR of your vehicle that is given by
SUBARU is shown on the certification
label located at the bottom of driver’s side
door pillar of your vehicle. !
Gross Axle Weight (GAW) and
Gross Axle Weight Rating (GAWR)Gross Axle Weight
The total weight applied to each axle
(GAW) must never exceed the Gross Axle
Weight Rating (GAWR). The front and rear
GAWs can be adjusted by relocating
passengers and luggage inside the vehi-
cle. The front and rear GAWR of your
vehicle that is given by SUBARU are also
shown on the certification label located at
the bottom of driver ’s side door pillar.
To check both GVWR and GAWR and to
confirm that the total weight and weight
distribution are within safe driving limits,
you should have your vehicle and trailer
weighed at a commercial weighing station.
Be sure that all cargo is firmly secured to prevent a change in weight distribution
while driving.
!
Tongue loadTongue load
Ensure that the trailer tongue load is from
8 to 11 percent of the total trailer weight
and does not exceed the maximum value
of 200 lbs (90 kg).
NOTE
For vehicles with trailer brakes, the
trailer tongue load exceeds 200 lbs (90
kg) when calculated at 8% of the
maximum total trailer weight.
Even in this case, the maximum value
is 200 lbs (90 kg).
Driving tips/Trailer towing (Crosstrek models)
–CONTINUED –8-21

Driving tips/Trailer towing (Crosstrek models)
1) Jack
2) Bathroom scale
The tongue load can be weighed with a
bathroom scale as shown in the illustration
above. When weighing the tongue load,
be sure to position the towing coupler at
the height at which it would be during
actual towing, using a jack as shown.
F: Front
The tongue load can be adjusted by
proper distribution of the load in the trailer.
Never load the trailer with more weight in
the back than in the front; approximately
60 percent of the trailer load should be in
the front and approximately 40 percent in
the rear. Also, distribute the load as evenly
as possible on both the left and right
sides.
Be sure that all cargo is firmly secured to
prevent a change in weight distribution
while driving.
WARNING
If the trailer is loaded with more
weight in the back of trailer’s axle
than in the front, the load is taken off the rear axle of the towing vehicle.
This may cause the rear wheels to
skid, especially during braking or
when vehicle speed is reduced dur-
ing cornering, resulting in over-
steer, spin out and/or jackknifing.
&
Trailer Hitches
WARNING
Never drill the frame or under-body
of your vehicle to install a commer-
cial trailer hitch. If you do, danger-
ous exhaust gas, water or mud may
enter the passenger compartment
through the drilled hole. Exhaust
gas contains carbon monoxide, a
colorless and odorless gas which is
dangerous, or even lethal, if inhaled.
Also, drilling the frame or under-
body of your vehicle could cause
deterioration of strength of your
vehicle and cause corrosion around
the drilled hole.
CAUTION
. Do not modify the vehicle ex-
haust system, brake system, or
other systems when installing a
8-22

Driving tips/Trailer towing (Crosstrek models)
!Trailer lights
CAUTION
Direct splicing or other improper
connection of trailer lights may
damage your vehicle ’s electrical
system and cause a malfunction of
your vehicle ’s lighting system.
Connection of trailer lights to your vehi-
cle ’s electrical system requires modifica-
tions to the vehicle’ s lighting circuit to
increase its capacity and accommodate
wiring changes. To ensure the trailer lights
are connected properly, please consult
your SUBARU dealer. Check for proper
operation of the turn signals and the brake
lights each time you connect a trailer to
your vehicle.
! Tires
WARNING
Never tow a trailer when the tem-
porary spare tire is used. The tem-
porary spare tire is not designed to
sustain the towing load. Use of the
temporary spare tire when towing
can result in failure of the spare tire
and/or less stability of the vehicle.
Make sure that all the tires on your vehicle are properly inflated. Refer to
“Tires”F 12-
8.
Trailer tire condition, size, load rating and
proper inflation pressure should be in
accordance with the trailer manufacturer ’s
specifications. Also check federal, state,
province and/or other applicable regula-
tions.
In the event your vehicle gets a flat tire
when towing a trailer, ask a commercial
road service representative or profes-
sional to repair the flat tire.
If you carry a regular size spare tire in your
vehicle or trailer as a precaution against
getting a flat tire, be sure that the spare
tire is firmly secured.
& Trailer towing tips
CAUTION
. For models equipped with the
BSD (Blind Spot Detection) and
RCTA (Rear Cross Traffic Alert)
driving support systems, when
towing a trailer, press the BSD/
RCTA OFF switch to deactivate
the system. The system may not
operate properly due to the
blocked radar waves. For details
about the BSD/RCTA OFF switch, refer to
“BSD/RCTA OFF switch ”
F 7-56.
. Never exceed 45 mph (72 km/h)
when towing a trailer in hilly
country on hot days.
. When towing a trailer, steering,
stability, stopping distance and
braking performance will be dif-
ferent when compared to normal
operation. For safety’ s sake, you
should employ extra caution
when towing a trailer and you
should never drive at excessive
speeds. You should also keep the
following tips in mind:
! Before starting out on a trip
. Check the towing regulations for trailer
or caravan vehicles that vary by state/
region. Failure to comply with the proce-
dures set forth will not only compromise
your safety, but will also negate your
insurance coverage and/or may violate
the state road and traffic acts and regula-
tions.
. Check that the vehicle and vehicle-to-
hitch mounting are in good condition. If
any problems are apparent, do not tow the
trailer.
. Check that the vehicle rests horizon-
tally with the trailer attached. If the vehicle
8-24

is tipped sharply up at the front and down
at the rear, check the total trailer weight,
GVW, GAWs and tongue load again, then
confirm that the load and its distribution
are acceptable.
.Check that the tire rating and pressures
are correct.
. Check that the vehicle and trailer are
connected properly. Confirm that:
–the trailer tongue is connected
properly to the hitch ball.
– the trailer lights connector is con-
nected properly and trailer ’s brake
lights illuminate when the vehicle ’s
brake pedal is pressed, and that the
trailer ’s turn signal lights flash when
the vehicle’ s turn signal lever is oper-
ated.
– the safety chains are connected
properly.
– all cargo in the trailer is secured
safely in position.
– the side mirrors provide a good
rearward field of view without a sig-
nificant blind spot.
. Sufficient time should be taken to learn
the “feel ”of the vehicle/trailer combination
before starting out on a trip. In an area free
of traffic, practice turning, stopping and
backing up. !
Driving with a trailer
. You should allow for considerably more
stopping distance when towing a trailer.
Avoid sudden braking because it may
result in skidding or jackknifing and loss of
control.
. Avoid abrupt starts and sudden accel-
erations. If your vehicle has a manual
transmission, always start out in first gear
and release the clutch at moderate engine
revolution.
. Avoid uneven steering, sharp turns and
rapid lane changes.
. Slow down before turning. Make a
longer than normal turning radius because
the trailer wheels will be closer than the
vehicle wheels to the inside of the turn. In
a tight turn, the trailer could hit your
vehicle.
. Crosswinds will adversely affect the
handling of your vehicle and trailer, caus-
ing sway. Crosswinds can be due to
weather conditions or the passing of large
trucks or buses. If swaying occurs, firmly
grip the steering wheel and promptly begin
decelerating your vehicle at a gradual
pace.
. When passing other vehicles, consid-
erable distance is required because of the
added weight and length caused by
attaching the trailer to your vehicle.
1) Left turn
2) Right turn
. Backing up with a trailer is difficult and
takes practice. When backing up with a
trailer, never accelerate or steer rapidly.
When turning back, grip the bottom of the
steering wheel with one hand and turn it to
the left for a left turn, and turn it to the right
for a right turn.
. If the ABS warning light illuminates
while the vehicle is in motion, stop towing
the trailer and have repairs performed
immediately by your nearest SUBARU
dealer.
Driving tips/Trailer towing (Crosstrek models)
–CONTINUED –8-25

&Using the jack
1. Park on a hard, level surface, when-
ever possible, then stop the engine.
2. Apply the parking brake securely and
shift the shift lever in reverse (MT models)
or the select lever to the “P ” (Park)
position (CVT models).
3. Turn on the hazard warning flasher
and have everyone get out of the vehicle.
4. Put wheel blocks at the front and rear
of the tire diagonally opposite the tire that
you are going to replace.
5. Take out the jack and jack handle.
Jack-up points
6. Place the jack under the side sill at the
front or rear jack-up point closest to the
tire that you are going to replace.
Turn the jackscrew by hand until the jack
head engages firmly into the jack-up point.
7. Insert the jack handle into the jack-
screw, and turn the handle until the tire
clears the ground. Do not raise the vehicle
higher than necessary.
In case of emergency/Maintenance tools9-5

In case of emergency/Flat tires
Flat tires
If you have a flat tire while driving, never
brake suddenly; keep driving straight
ahead while gradually reducing speed.
Then slowly pull off the road to a safe
place.
&Changing a flat tire
WARNING
. Do not jack up the vehicle on an
incline or a loose road surface.
The jack can come out of the
jacking point or sink into the
ground and this can result in a
severe accident.
. Use only the jack provided with
your vehicle. The jack supplied
with the vehicle is designed only
for changing a tire. Never get
under the vehicle while support-
ing the vehicle with this jack.
. Always turn off the engine before
raising the flat tire off the ground
using the jack. Never swing or
push the vehicle supported with
the jack. The jack can come out
of the jacking point due to a jolt
and this can result in a severe accident.
1. Park on a hard, level surface, when-
ever possible, then stop the engine.
2. Apply the parking brake securely and
shift the shift lever in reverse (MT models)
or the select lever to the “P ” (Park)
position (CVT models).
3. Turn on the hazard warning flasher
and have everyone get out of the vehicle.
4. Put wheel blocks at the front and rear
of the tire diagonally opposite the flat tire.
5. Take out the jack, jack handle and
wheel nut wrench.
The tools and the spare tire are stored
under the floor of the trunk (4-door) or the
cargo area (5-door). Refer to “Mainte-
nance tools ”F 9-3.
NOTE
Make sure that the jack is well lubri-
cated before using it.
6. Take out the tool bucket and turn the
attaching bolt counterclockwise, then take
the spare tire out.
NOTE
If the spare tire provided in your vehicle
is a temporary spare tire, carefully read
“Temporary spare tire ”F9-2 and
strictly follow the instructions.
9-6

In case of emergency/Flat tires
12. Before putting the spare tire on, clean
the mounting surface of the wheel and hub
with a cloth.
13. Put on the spare tire. Replace the
wheel nuts. Tighten them by hand.
WARNING
Do not use oil or grease on the
wheel studs or nuts when the spare
tire is installed. This could cause the
nuts to become loose and lead to an
accident.
14. Turn the jack handle counterclockwise
to lower the vehicle.
15. Use the wheel nut wrench to securely
tighten the wheel nuts to the specified
torque, following the tightening order in the
illustration.
For the wheel nut tightening torque, refer
to “Tires ”F 12-8. Never use your foot on
the wheel nut wrench or a pipe extension
on the wrench because you may exceed
the specified torque. Have the wheel nut torque checked at the nearest automotive
service facility.
1) Support holder
16. Store the flat tire in the spare tire
compartment. Install with the support
holder facing upward and secure the flat
tire by firmly tightening the attaching bolt.
NOTE
If you cannot fix the flat tire firmly, try
turning the support holder upside
down.
17. Store the jack, jack handle and wheel
nut wrench in their storage locations.
9-8