2017 SUBARU LEGACY steering

About EyeSight
6
NOTE
xEyeSight records and stores the following data when the Pre-Collision
Braking System is operated. It does not record conversations or other
audio data.
- Stereo camera image data
- Distance from the vehicle in front
- Vehicle speed
- Steering wheel turning angle
- Lateral movement with regards to the direction of travel
- Accelerator pedal operation status
- Brake pedal operation status
- Select lever position
- Odometer reading
- Data related to ABS, Vehicle Dynamics Control and Traction Control Function
SUBARU and third parties contracted by SUBARU may acquire and use
the recorded data for the purpose of vehicle research and development.
SUBARU and third parties contracted by SUBARU will not disclose or
provide the acquired data to any other third party except under the fol-
lowing conditions.
xThe vehicle owner has given his/her consent.
x The disclosure/provision is based on a court order or other legally
enforceable request.
x Data that has been modified so that the user and vehicle cannot be
identified is provided to a research institution for statistical processing
or similar purposes.

About EyeSight
11
EyeSight includes the following functions.
■Pre-Collision Braking System
This function uses a following distance warning feature to warn the driver to take evasive
action when there is the possibility of a collision with a vehicle or obstacle in front of the
driver’s vehicle. If the driver still does not take evasive action, the brakes are quickly applied
automatically just before the collision in order to reduce the collision damage or, if possible,
prevent the collision.
Ÿ Refer to page 20.
■ Adaptive Cruise Control
This function maintains the set vehicle speed and when there is a vehicle in front in the
same traffic lane, it tracks the speed of the vehicle in front up to the maximum of the set
vehicle speed.
Ÿ Refer to page 32.
■Lane Keep Assist
This function helps suppress lane drifting by detecting lane markings (e.g., white lines) on
highways, etc. and by a ssisting steering operation.
Ÿ Refer to page 54.
■Pre-Collision Throttle Management
This function reduces accidental forward movement caused by the select lever being placed
in the wrong position or the accelerator pedal being accidently depressed, or depressed too
strongly.
Ÿ Refer to page 62.
■Lane Departure Warning
This function warns the driver when the vehicle is about to depart the traffic lane during driv-
ing.
Ÿ Refer to page 68.
■Lane Sway Warning
This system detects vehicle drifting caused by driver fatigue, failure to concentrate on the
road, inattention, strong crosswinds or other factors, and warns the driver.
Ÿ Refer to page 71.
EyeSight Functions

20
Pre-Collision Braking System
When there is the risk of a rear-end collision with an 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.
x When 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.
x The 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.
x The 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.
x When 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.
x If 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.
x When 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)
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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.)
x A 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)
x When 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
x When driving at night or in a tunnel without the headlights on
x When driving at night or in a tunnel when there is a vehicle in front that
does not have its taillights on
x When approaching a motorcycle, bicycle or pedestrian at night
x When ambient light is poor in the evening or early morning
x When a vehicle, motorcycle, bicycle or pedestrian is outside the area
illuminated by the headlights
x When affected by strong light from the front (for example, sunlight at
dawn, sunset or headlight beams, etc.)
x When there is snow, frost, dirt or dust on the windshield or it is clouded
x When fluid has not been fully wiped off the windshield during or after
washer use
x When 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
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 warning 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

Adaptive Cruise Control
38
Adaptive Cruise Control is available when the engine is turned on.
■Setting Adaptive Cruise Control
(1) Setting Adaptive Cruise Control to standby status
Press the (CRUISE) switch. At this time, “ ” (Adaptive Cruise Control), your vehi-
cle indicator and the “following distance setting” are displayed on the EyeSight display area
in the multi information display.
The set vehicle speed display will read “- - MPH”.
If the switch is pressed once more, the EyeSight display will turn off. It will also automatically
turn off when the engine is stopped.
To set ready status: Adaptive Cruise Control can be set when all
of the following conditions are met and
is displayed on the EyeSight display area.
- All doors (except the rear gate/trunk) are closed.
- The driver’s seatbelt is fastened.
- The electronic parking brake is not engaged (The brake system warning light
is turned off.).
- The select lever is in the position and the paddle shift is not operated.
- The brake pedal is not depressed.
- EyeSight operation is not temporarily stopped.
Ÿ Refer to page 87.
- The road is not a steep slope.
- The steering wheel has not been turned significantly in either direction.
- X-mode is not turned on.
- The vehicle speed is between approximately 0 MPH (0 km/h) and 90 MPH (145 km/h).
How to use Adaptive Cruise Control
S01985S01110
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Adaptive Cruise Control
49
●Automatic cancellation by the system
In the following cases, a buzzer will sound a
single long beep and Adaptive Cruise
Control is automatically canceled. ( is
displayed on the EyeSight display area.) If
the stay-stopped function is engaged, the
electronic parking brake will be automati-
cally engaged.
x Conditions for automatic cancellation
- The grade of the road is very steep.
- ABS, Vehicle Dynamics Control or Traction Control Function is activated.
- The vehicle speed has exceeded approximately 100 MPH (160 km/h) while cruise con- trol is set.
- The steering wheel was turned significantly in either direction.
- The transmission select lever is moved to a position other than . xCruise control can be resumed after the transmission select lever is returned to the
position.
- A paddle shift switch is operated while driving when the transmission select lever is in the position.
xCruise control can be resumed again after the shift indicator returns to .
- Any door (except the rear gate/trunk) is opened.
- The driver’s seatbelt is unfastened.
- The electronic parking brake is engaged manually. (When the brake system warning light is illuminated or flashing.)
- The X-mode is turned on (the X-mode indicator light illuminates). xCruise control can be resumed after the X-mode is turned off.
- EyeSight operation has temporarily stopped.
Ÿ Refer to page 87.
- EyeSight is malfunctioning.
Ÿ Refer to page 86.
- The Pre-Collision secondary braking has activated.
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54
Lane Keep Assist
The stereo cameras detect lane markings
(including Botts’ dots) of the lane and the sys-
tem assists the steering operation by working
with the electric power steering to help keep
your vehicle in its lane when driving on
expressways, freeways and interstate high-
ways.
WARNING
Lane Keep Assist is not an automatic driving system.
Do not overestimate the capabilities of Lane Keep Assist. It is not a sys-
tem to assist inattentive driving or meant to permit driving without hold-
ing the steering wheel. Make sure to grip the steering wheel while
driving. To drive safely, check the distance from the vehicle in front or
from a vehicle driving in parallel with your vehicle, the surrounding con-
ditions and the surrounding environment while driving.
If you feel that the level of control and timing by the system are different from
your own driving style, the system may not support safe driving. Do not use
Lane Keep Assist.
Lane Keep Assist does not always operate under all situations. If you rely
only on the Lane Keep Assist to stay in a lane, it may cause an accident such
as a collision with an obstacle beside your lane or with a vehicle driving in an
adjacent lane.x Check that there are no problems with the tires and brakes during a daily
inspection before using the system.
Ÿ Refer to “Warranty and Maintenance Booklet”.
x The system may not operate properly under the following conditions. Do
not use Lane Keep Assist.
- The air pressure of tires is not to specification.
*1
- Tires that are unevenly worn or tires with uneven wear patterns are installed.*1
- Tires that are the wrong size are installed.*1
- The wheel balance is abnormal (e.g., the balance weight is removed ormisaligned.)*1
- The wheel alignment is out of the specified value.*1
- Flat tires have been fixed temporarily with a tire repair kit.
- The suspension has been modified (including genuine SUBARU parts).
S02069
Lane
markings