2016 SUBARU OUTBACK brake

20
Pre-Collision Braking System
When there is the risk of a rear-end collision with a obstacle in front, the EyeSight system
helps to minimize or prevent a collision by warning the driver. If the driver still does not take
evasive action to avoid a collision, the brakes can be automatically applied just before the
collision in order to reduce impact damage, or if possible, prevent the collision. If the driver
takes evasive action to avoid a collision, Pre-Collision Brake Assist will operate in order to
help the driver to prevent the collision.
This system can be effective not only with direct rear-end collisions, but also with offset
rear-end collisions. This function can be activated when the select lever is in the , or
positions.
WARNING
xNever use the Pre-Collision Braking System and Pre-Collision Brake Assist to
stop your car or avoid a collision under ordinary conditions. These functions
cannot prevent collisions under all conditions. If the driver relies only on the
Pre-Collision Braking System for Brake operation, collisions may occur.
xWhen a warning is activated, pay attention to the front of the vehicle and its
surroundings, and operate the brake pedal and/or take other actions if nec-
essary.
xThe EyeSight Pre-Collision Braking System is primarily designed to pre-
vent rear-end collisions with other vehicles when possible and to minimize
damage and injuries in the event of a collision. In addition to other vehi-
cles, things such as motorbikes, bicycles and pedestrians can also be
treated as obstacles. However, there may be cases when detection is not
possible depending on a variety of conditions
*2. For example, when a vehi-
cle is viewed from the side, oncoming vehicle, vehicles approaching in
reverse, small animals or children, or walls or doors are not likely to be
detected.
xThe Pre-Collision Braking System will operate at the point when it deter-
mines that a collision cannot be avoided and is designed to apply strong
braking force just before a collision. The result of this varies depending on
a variety of conditions
*2. Because of this, performance of this function will
not always be the same.
xWhen the Pre-Collision Braking System is activated, it will continue to
operate even if the accelerator pedal is partially depressed. However, it will
be canceled if the accelerator pedal is deeply depressed.
xIf the driver depresses the brake pedal or turns the steering wheel, the system
may determine that this constitutes evasive action by the driver, and the auto-
matic braking control may not activate in order to allow the driver full control.
xWhen the difference in speed with the obstacle in front is the following fig-
ure
*1 or more, it may not be possible to avoid a collision. Even if the speed
difference is the following figure*1 or less, in cases such as when another
vehicle cuts in front of you, or in other cases depending on visibility, the
condition of road surface and other factors
*2, the function may be unable to
stop the vehicle or may not activate. Pre-Collision Brake Assist also may
not activate depending on the conditions
*2 listed below.
*1:For vehicles: approximately 30 MPH (50 km/h),
For pedestrians: approximately 21 MPH (35 km/h)
*2:Conditions
- Distance to obstacle in front of you, speed difference, proximity condi-
tions, lateral displacement (the amount of offset)
DM
N

Pre-Collision Braking System
21
Continued on next pageŸ
- Vehicle conditions (amount of load, number of occupants, etc.)
- Road conditions (grade, slipperiness, shape, bumps, etc.)
- When visibility ahead is poor (rain, snow, fog or smoke, etc.)
- When the detected object is something other than a vehicle, motorcycle,
bicycle or pedestrian
xA domestic animal or other animal (a dog or deer, etc.)
xA guardrail, telephone pole, tree, fence or wall, etc.
- Even if the obstacle is a motorcycle, bicycle or pedestrian, depending on
the brightness of the surroundings as well as the relative movement, and
aspect or angle of the object, there may be cases when the system can-
not detect it.
- When the system determines that operation by the driver (based on
accelerator pedal operation, braking, steering wheel angle, etc.) is
intended as evasive action
- Vehicle maintenance status (brake systems, tire wear, tire pressure,
whether a temporary spare tire is being used, etc.)
- When towing a trailer or another vehicle, etc.
- When the brakes are cold due to outside temperature being low or just
after starting the engine.
- When the brakes are overheated on downhill grades (braking effective-
ness is reduced)
- When driving in rain or after washing the vehicle (the brakes are wet and
braking effectiveness is reduced)
- Recognition conditions of the stereo cameras
In particular, the function may be unable to stop the vehicle or may not
activate in the following cases.
xBad weather (for example heavy rain, a blizzard or thick fog)
xWhen visibility is poor due to sand, smoke or water vapor in the air or
when the vehicle in front or oncoming traffic causes water, snow, dirt,
dust or other substances to obscure the view through the windshield
xWhen driving at night or in a tunnel without the headlights on
xWhen driving at night or in a tunnel when there is a vehicle in front that
does not have its taillights on
xWhen approaching a motorcycle, bicycle or pedestrian at night
xWhen ambient light is poor in the evening or early morning
xWhen a vehicle, motorcycle, bicycle or pedestrian is outside the area
illuminated by the headlights
xWhen affected by strong light from the front (for example, sunlight at
dawn, sunset or headlight beams, etc.)
xWhen there is snow, frost, dirt or dust on the windshield or it is clouded
xWhen fluid has not been fully wiped off the windshield during or after
washer use
xWhen the target cannot be correctly recognized because the stereo
cameras’ view is obstructed by water droplets from rain or the window
washer, or by the wiper blades.

Pre-Collision Braking System
23
xWhen you suddenly change lanes and your vehicle is immediately
behind an obstacle
xWhen there is a vehicle, motorcycle, bicycle or pedestrian in a location
close to your vehicle’s bumper
xWhen the speed difference between your vehicle and an obstacle is 4
MPH (5 km/h) or less (As braking is performed once the obstacle is in
close proximity to your vehicle, depending on the shape and size of the
obstacle, there may be some cases when the obstacle is outside the
range of the cameras’ field of vision.)
xWhen driving on sharp curves, steep uphill grades or steep downhill
grades
xWhen driving on a bumpy or unpaved road
xWhen there are changes in brightness, such as at a tunnel entrance or
exit
xDo not test Pre-Collision Braking System on its own. It may operate
improperly and cause an accident.
xThe system may not operate correctly under the conditions listed below.
When these conditions occur, turn off the Pre-Collision Braking System.
- The tire pressure is not correct.
*1
- The temporary spare tire is installed on any wheel.*1
- Tires that are worn or have large variations in wear conditions are
installed.*1
- Tires other than those of the designated size are installed.*1
- Flat tires have been fixed temporarily with a tire repair kit.
- The suspension has been modified (including a genuine SUBARU sus-
pension that has been modified).
- Any object that disturbs the stereo cameras’ view is installed on the vehi-
cle.
- The headlights are dirty or they have snow and ice or dirt on them.
(Objects are not correctly illuminated and are difficult to detect.)
- The optical axes are not aligned correctly. (Objects are not correctly illu-
minated and are difficult to detect.)
- The lights including headlights and fog lamps have been modified.
- Vehicle operation has become compromised due to an accident or mal-
function.
- The brake system warning light is illuminated in red.
- A heavy cargo is loaded onto or inside the vehicle.
- The maximum number of occupants is exceeded.
- There is something wrong with the combination meter; such as when the
lights do not illuminate, the beeps do not sound, the display is different
from when it is normal, etc.
*2
*1: The wheels and tires have functions that are critically important. Be
sure to use the correct ones. For details, refer to the Owner’s Manual
for your vehicle.
*2: For details about the combination meter, refer to the Owner’s Manual
for your vehicle.

Pre-Collision Braking System
25
- When the exhaust gas emitted by the vehicle in front is clearly visible in cold
weather, etc.
- When there is an obstacle on
a curve or intersection
- When narrowly passing a
vehicle or an object
- When stopping very close to
a wall or a vehicle in front
xIf there is cargo or installed
accessories, etc. that are pro-
truding over the edge of the
front bumper, the vehicle’s
length will increase and the
system may not be able to pre-
vent a collision.
xIf the driver operates the brake pedal during automatic braking, the pedal may
feel stiff; however, this is normal. By depressing the brake pedal further you
can apply more braking force.
NOTE
Some unusual noises may be audible during automatic braking. This is
caused by the braking control and is normal.
S00652
S01973

Pre-Collision Braking System
27
When there is an obstacle in the forward direction during driving, the system activates in the
following sequence in order to warn the driver, activate braking control, and active the brake
lights.
Following Distance Warning:
When the system determines that there is a risk of collision, a buzzer sounds repeated short
beeps and the indicators on the multi information display illuminate to warn the driver.
The Following Distance Warning operates when Adaptive Cruise Control is not set.
When the driver depresses the brake pedal to decelerate and achieves a suitable following
distance, the warning is canceled.
First Braking and Warning:
When the system determines that there is a high risk of collision with an obstacle in front, a
buzzer sounds repeated short beeps and the indicators on the multi information display illu-
minate to warn the driver, and braking control is activated and the engine output, in some
situations, is also controlled. If the system determines that the amount of evasive action
(braking, steering, etc.) taken by the driver has reduced the risk of collision, braking activa-
tion is canceled.
Secondary Braking and Warning:
If the system then determines that the risk of collision is extremely high, the buzzer changes
to a continuous beeping sound and stronger braking control is activated. If, despite any eva-
sive action taken by the driver, the system subsequently determines that a collision is
unavoidable, braking control and the engine output control are continued.
Even after the vehicle has stopped, depress the brake pedal.

Until the brake pedal is depressed, a mes-
sage appears and stays in the pop-up screen
area of the multi information display for
approximately 2 minutes. A single continuous
beep sounds while the message is displayed.
Pre-Collision Braking System operation
S01124
Apply Brake
To Hold
Position

Pre-Collision Braking System
28
NOTE
xAfter the vehicle has come to a stop through secondary braking, release
brake control in the following manner.
- Depress the brake pedal.
- Depress the accelerator pedal (except when the select lever is in the
position).
- When the selector lever is in the position
xAfter stopping with secondary braking, in the following cases, operate elec-
tronic parking brake and release brake control.
(For details about how to release the electronic parking brake, refer to the
Owner’s Manual for your vehicle.)
- When approximately 2 minutes have elapsed since stopping and not
depressing the brake pedal
- When any door (except the rear gate/trunk) was opened
- When EyeSight is temporarily stopped
- When there is a malfunction in the EyeSight system
& warningSecondary braking
& warning First braking
Possible collision area Highly possible
collision areaExtremely highly possible
collision areaObstacle
First
braking
No brake controlRepeated
short beeps
Repeated
short beeps
Strong Secondary
brakingOperating
systemIndication on the multi
information display
Continuous
beep Moderate Strength of
Automatic Braking
Warning
buzzer type
Following distance
warning
Following
distance
warning
S01141
N
P

Pre-Collision Braking System
29
When the Pre-Collision Braking System is activated (when the system determines that there
is a high risk of collision with an obstacle in front), if the driver depresses the brake pedal,
the system determines that this is emergency braking and activates braking assist automat-
ically.xNeither first braking or secondary braking will operate in the following
cases.
- When your vehicle speed is approximately 1 MPH (1 km/h) or less
(When the selector lever is in the position and your vehicle speed is
approximately 2 MPH (4 km/h) or less) or 100 MPH (160 km/h) or more
- When Vehicle Dynamics Control is active
xIf the system detects the brake lights of the vehicle in front, your vehicle
will start decelerating earlier than if it does not.
xThere are some cases where the first braking is applied for a longer period
of time. One of the reasons for this is due to a large speed difference with
an obstacle in front. In those cases, stronger or weaker braking control
may be activated.
Pre-Collision Braking Assist operation
CAUTION
If the driver depresses the brake pedal manually while following distance
warning is activated, the Pre-Collision Braking Assist will not work. (The vehi-
cle decelerates with the normal braking force operated by the driver.)
NOTE
xPre-Collision Braking Assist function does not operate when the vehicle
speed is approximately 7 MPH (10 km/h) or less or 100 MPH (160 km/h) or
more.
xFor information about the braking assist function, refer to the Owner’s
Manual for your vehicle.
N

Pre-Collision Braking System
30
Pressing and holding the Pre-Collision Braking System OFF switch for approximately 2 sec-
onds (or longer) turns off the Pre-Collision Braking System (including Pre-Collision Brake
Assist). When 1 short beep sound emits, this control is turned off and the Pre-Collision
Braking System OFF indicator light on the instrument panel illuminates.
To turn the control back on, press and hold the Pre-Collision Braking System OFF switch for
approximately 2 seconds or longer again. When this control is turned on, the Pre-Collision
Braking System OFF indicator light turns off.
Turning off the Pre-Collision Braking System
NOTE
xWhen the Pre-Collision Braking System is turned off, the Pre-Collision
Throttle Management Control function is also turned off.
xEven when the Pre-Collision Braking System is turned off, if the ignition
switch is turned off and the engine is then restarted, the Pre-Collision
Braking System will be turned on. The system default setting when the
vehicle is restarted in “ON”.
S01120