2017 SUBARU FORESTER engine control unit

Instruments and controls/Warning and indicator lights
If the engine coolant temperature in-
creases over the specified range, the
indicator light/warning light blinks in
RED. At this time, the engine is close to
overheating.
If the engine coolant temperature in-
creases further, the indicator light/warning
light illuminates in REDcontinuously. At
this time, the engine may be overheating.
When the indicator light/warning light
blinks in REDor illuminates in RED, safely
stop the vehicle as soon as possible, and
refer to the emergency steps to take in the
case of engine overheating. Refer to
“ Engine overheating ”F 9-12. After that,
have the system checked by your nearest
SUBARU dealer.
Also, if the indicator light/warning light
often blinks in RED, the electrical system
may be malfunctioning. Contact your
SUBARU dealer for an inspection.
NOTE
If the engine is restarted after a certain
driving condition, this indicator light/
warning light may illuminate in RED.
However, this is not a malfunction if the
indicator light/warning light turns off
after a short time.
&Charge warning light
If this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt. If the belt is
loose, broken or if the belt is in good
condition but the light remains illuminated,
contact your nearest SUBARU dealer
immediately.
&Oil pressure warning
light
If this light illuminates when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the engine oil level. If the oil level is
low, add oil immediately. If the engine oil is
at the proper level but the light remains
illuminated, contact your nearest
SUBARU dealer immediately.
For details about checking the engine oil
level or adding the engine oil, refer to
“Engine oil ”F 11-10.
CAUTION
Do not operate the engine with the
oil pressure warning light illumi-
nated. This may cause serious en-
gine damage.
&Engine low oil level
warning light
This light illuminates when the engine oil
level decreases to the lower limit.
If the engine low oil level warning light
illuminates while driving, park the vehicle
in a safe and level location, and then
check the engine oil level. When the
engine oil level is not within the normal
range, refill with engine oil. Refer to
“Engine oil ”F 11-10.
If the warning light does not turn off after
refilling the engine oil, or the warning light
illuminates even though the engine oil
level is within the normal range, have the
vehicle checked by a SUBARU dealer.
NOTE
. After replacing or adding the engine
oil, if the engine oil level is within the
normal range when restarting the en-
gine on a level surface, the warning
light will turn off.
3-18

&ABS warning light
CAUTION
.If any of the following conditions
occur, we recommend that you
have the ABS repaired at the first
available opportunity by your
SUBARU dealer.
– The warning light does not
illuminate when the ignition
switch is turned to the “ON ”
position.
– The warning light illuminates
when the ignition switch is
turned to the “ON ”position,
but it does not turn off even
when the vehicle speed ex-
ceeds approximately 25 mph
(40 km/h).
– The warning light illuminates
during driving.
. When the warning light is on (and
the brake system warning light is
off), the ABS function shuts
down. However, the conventional
brake system continues to oper-
ate normally.
The ABS warning light illuminates to-
gether with the brake system warning light if the EBD system malfunctions. For
further details of the EBD system mal-
function warning, refer to
“Electronic
Brake Force Distribution (EBD) system
warning ”F 3-22.
NOTE
If the warning light behavior is as
described in the following conditions,
the ABS may be considered normal.
. The warning light illuminates when
the ignition switch is turned to the
“ ON ”position and turns off approxi-
mately 2 seconds after the engine has
started.
. The warning light illuminates right
after the engine is started but turns off
immediately, remaining off.
. The warning light remains illumi-
nated after the engine has been started,
but it turns off when the vehicle speed
reaches approximately 25 mph (40
km/h).
. The warning light illuminates during
driving, but it turns off immediately and
remains off.
When driving with an insufficient battery
voltage such as when the engine is jump
started, the ABS warning light may illumi-
nate. This is due to the low battery voltage
and does not indicate a malfunction.
When the battery becomes fully charged, the light will turn off.
&Brake system
warning light
The light illuminates with the parking
brake applied while the ignition switch is
in the
“ON”position. It turns off when the
parking brake is fully released.
WARNING
. Driving with the brake system
warning light on is dangerous.
This indicates your brake system
may not be working properly. If
the light remains illuminated,
have the brakes inspected by a
SUBARU dealer immediately.
. If at all in doubt about whether
the brakes are operating prop-
erly, do not drive the vehicle.
Have your vehicle towed to the
nearest SUBARU dealer for re-
pair.
The brake system warning light has the
following functions.
! Brake fluid level warning
This light illuminates when the brake fluid
level has dropped to near the “MIN”level
of the brake fluid reservoir with the ignition
Instruments and controls/Warning and indicator lights
–CONTINUED –3-21

Instruments and controls/Warning and indicator lights
At this time, there will be more resis-
tance when steering. However this is
not a malfunction. Normal steering
force will be restored after the steering
wheel is not operated for a while and
the power steering control system has
an opportunity to cool down. However,
if the power steering is operated in a
non-standard way which causes power
assist limitation to occur too fre-
quently, that may result in a malfunc-
tion of the power steering control
system.
&Vehicle Dynamics
Control warning light/
Vehicle Dynamics Con-
trol operation indicator
light
!Vehicle Dynamics Control warning
light
CAUTION
The Vehicle Dynamics Control sys-
tem provides its ABS control
through the electrical circuit of the
ABS. Accordingly, if the ABS is
inoperative, the Vehicle Dynamics
Control system becomes unable to provide ABS control. As a result, the
Vehicle Dynamics Control system
also becomes inoperative, causing
the warning light to illuminate.
Although both the Vehicle Dynamics
Control system and ABS are inop-
erative in this case, the ordinary
functions of the brake system are
still available. You will be safe while
driving with this condition, but drive
carefully and have your vehicle
checked at a SUBARU dealer as
soon as possible.
NOTE
.
If the electrical circuit of the Vehicle
Dynamics Control system itself mal-
functions, the warning light only illumi-
nates. At this time, the ABS (Anti-lock
Brake System) remains fully opera-
tional.
. The warning light illuminates when
the electronic control system of the
ABS/Vehicle Dynamics Control system
malfunctions.
The Vehicle Dynamics Control system is
probably inoperative under any of the
following conditions. Have your vehicle
checked at a SUBARU dealer immedi-
ately.
. The warning light does not illuminate when the ignition switch is turned to the
“ON
”position.
. The warning light illuminates while the
vehicle is running.
NOTE
If the warning light behavior is as
described in the following examples,
the Vehicle Dynamics Control system
may be considered normal.
. The warning light illuminates when
the ignition switch is turned to the
“ ON ”position and turns off approxi-
mately 2 seconds after the engine has
started.
. The warning light illuminates right
after the engine is started but turns off
immediately, remaining off.
. The warning light illuminates after
the engine has started and turns off
while the vehicle is subsequently being
driven.
. The warning light illuminates during
driving, but it turns off immediately and
remains off.
. The warning light illuminates when
the engine has stalled and continues to
illuminate after the engine has been
restarted. However, it will turn off once
the vehicle starts moving.
3-24

Climate control/Operating tips for heater and air conditioner
Operating tips for heater and
air conditioner
&Cleaning ventilation grille
1) Front ventilation inlet grille
Always keep the front ventilation inlet grille
free of snow, leaves, or other obstructions
to ensure efficient heating and defrosting.
Since the condenser is located in front of
the radiator, this area should be kept clean
because cooling performance is impaired
by any accumulation of insects and leaves
on the condenser.
&Efficient cooling after parking
in direct sunlight
After parking in direct sunlight, drive with
the windows open for a few minutes to allow outside air to circulate into the
heated interior. This results in quicker
cooling by the air conditioner. Keep the
windows closed during the operation of
the air conditioner for maximum cooling
efficiency.
&
Lubrication oil circulation in
the refrigerant circuit
Operate the air conditioner compressor at
a low engine speed (at idle or low driving
speeds) a few minutes each month during
the off-season to circulate its oil.
&Checking air conditioning
system before summer sea-
son
Check the air conditioner unit for refriger-
ant leaks, hose conditions, and proper
operation each spring. Have the air con-
ditioning system checked by your
SUBARU dealer.
&Cooling and dehumidifying in
high humidity and low tem-
perature weather conditions
Under certain weather conditions (high
relative humidity, low temperatures, etc.) a
small amount of water vapor emission
from the air outlets may be noticed. This
condition is normal and does not indicate any problem with the air conditioning
system.
&
Air conditioner compressor
shut-off when engine is
heavily loaded
To improve acceleration and gas mileage,
the air conditioner compressor is designed
to temporarily shut off during air condi-
tioner operation whenever the accelerator
is fully depressed such as during rapid
acceleration or when driving up a steep
incline.
&Refrigerant for your climate
control system
1) Air conditioner label
Your air conditioner uses ozone friendly
4-12

Starting and operating/SI–DRIVE
SI-DRIVE (if equipped)
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
Type A combination meter
Type B combination meter
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
Type A combination meter
Type B combination meter
The Sport (S) mode provides the engine
7-32

switch is turned to the“ON”position, the
power steering warning light on the
combination meter illuminates to inform
the driver that the warning system is
functioning properly. Then, if the engine
started, the warning light turns off to inform
the driver that the steering power assist is
operational.
CAUTION
When the power steering warning
light is illuminated, there may be
more resistance when the steering
wheel is operated. Drive carefully to
the nearest SUBARU dealer and
have the vehicle inspected immedi-
ately.
NOTE
If the steering wheel is operated in the
following ways, the power steering
control system may temporarily limit
the power assist in order to prevent the
system components, such as the con-
trol computer and drive motor, from
overheating.
. The steering wheel is operated fre-
quently and turned sharply while the
vehicle is maneuvered at extremely low
speeds, such as while frequently turn-
ing the steering wheel during parallel parking.
.
The steering wheel remains in the
fully turned position for a long period
of time.
At this time, there will be more resis-
tance when steering. However this is
not a malfunction. Normal steering
force will be restored after the steering
wheel is not operated for a while and
the power steering control system has
an opportunity to cool down. However,
if the power steering is operated in a
non-standard way which causes power
assist limitation to occur too fre-
quently, this may result in a malfunc-
tion of the power steering control
system.
Braking
& Braking tips
WARNING
Never rest your foot on the brake
pedal while driving. This can cause
dangerous overheating of the
brakes and needless wear on the
brake pads and linings.
! When the brakes get wet
When driving in rain or after washing the
vehicle, the brakes may get wet. As a
result, 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.
! Use of engine braking
Remember to make use of engine braking
in addition to foot braking. When descend-
ing a grade, if only the foot brake is used,
the brakes may start working improperly
because of brake fluid overheating,
caused by overheated brake pads. To
help prevent this, shift into a lower gear to
get stronger engine braking.
! Braking when a tire is punctured
Do not depress the brake pedal suddenly
when a tire is punctured. This could cause
Starting and operating/Braking
–CONTINUED –7-35

Specifications/Fuses and circuits
Fuses and circuits
&Fuse panel located in the passenger compartment
Fuse
panel Fuse
rating Circuit
1 20A .Trailer hitch connector
2 15A .Rear seat heater
3 15A .Door locking
4 10A .Front wiper deicer relay
5 10A .Combination meter
6 7.5A .Remote control rear
view mirrors
. Seat heater relay
7 15A .Combination meter
. Integrated unit
8 10A .Stop light
9 15A .Front wiper deicer
10 7.5A .D-OP +B
11 7.5A .Turn signal unit
12 15A .Transmission control
unit
. Engine control unit
. Integrated unit
13 20A .Accessory power outlet
(center console)
14 15A .Parking light
. Tail light
. Rear combination light
12-12

Specifications/Fuses and circuits
&Fuse panel located in the engine compartment
A) Main fuse Fuse
panel Fuse
rating Circuit
1 30A .ABS unit
. Vehicle Dynamics Con-
trol unit
2 25A .Main fan (cooling fan)
3 25A .Sub fan (cooling fan)
4 Empty
5 25A .Audio
6 30A .Headlight (low beam)
7 15A .Headlight (high beam)
8 20A .Back-up
9 15A .Horn
10 25A .Rear window defogger
. Mirror heater
11 20A .Fuel pump
12 20A .Continuously variable
transmission control unit
13 7.5A .Engine control unit
14 15A .Turn and hazard warn-
ing flasher
15 15A .Tail and illumination re-
lay
16 7.5A .Alternator
12-14