2017 SUBARU LEGACY engine

About EyeSight
5
- When passing through the entrance or exit of a tunnel
- When the rear aspect of the vehicle in front is low, small or irregular (forexample a low bed trailer, etc.)
- When there is a fence, a wall or a shutter, etc. with a uniform pattern (a striped pattern, brick, etc.) or with no pattern in front
- When there is a wall or door made of glass or a mirror in front
- When driving at night or in a tunnel when there is a vehicle in front that does not have its taillights on
- When passing a banner or flag, low branches on a tree or thick/tall vege- tation
- On steep uphill or downhill grades
- When the stereo cameras are obstructed by a hand, etc. (If even one of the cameras is obstructed, the system does not operate properly.)
- When it is completely dark and no objects are detected
- When the area around the vehicle has a uniform color (such as when completely covered in snow, etc.)
- When the stereo camera lenses are dirty due to fingerprints, etc.
- When accurate detection is not possible due to reflections in the front windshield
- When the stereo cameras have become misaligned due to a strong impact
x Under the conditions listed below, EyeSight may temporarily stop operat-
ing. If this occurs, EyeSight will resume operating when the conditions
improve.
- The temperature inside the vehicle is high, such as after the vehicle was left in bright sunshine, or the temperature inside the vehicle is low, such
as after the vehicle was left in an extremely cold environment.
- Immediately after the engine starts
x When there is a malfunction in the EyeSight system, turn off the Pre-Colli-
sion Braking System (
Ÿ refer to page 30) and the Lane Departure Warning
(
Ÿ refer to page 70), and stop using the Adaptive Cruise Control and Con-
ventional Cruise Control. Contact a SUBARU dealer and have the system
inspected.
x When the Vehicle Dynamics Control warning light is illuminated, the Pre-
Collision Braking System may not operate properly. If the indicator light is
illuminated, turn off the Pre-Collision Braking System. Also, do not use the
Adaptive Cruise Control or Conventional Cruise Control.

About EyeSight
12
■Lead Vehicle Start Alert
This function notifies the driver when the vehicle stopped in front starts moving but the
driver’s vehicle remains stationary.
Ÿ Refer to page 74.
■Conventional Cruise Control
In this mode, the system maintains a constant vehicle speed. It does not track the vehicle in
front. This function can be used even when the stereo cameras have temporarily stopped
operating. (
Ÿ Refer to page 87.) (This function is used by switching from Adaptive Cruise
Control to Conventional Cruise Control.)
Ÿ Refer to page 75.
NOTE
EyeSight does not operate when the engine is not running.

About EyeSight
16
■EyeSight temporary stop indicator (white)
xThis indicator illuminates when the EyeSight system is temporarily stopped.
x When the ignition switch is placed in the ON position, it will illuminate if the
(CRUISE) switch or (Lane Keep Assist) switch are set to ON within approximately 7
seconds of the engine starting. It turns off when approximately 7 seconds have elapsed
since the engine started.
x When it is illuminated, none of the EyeSight functions can be used except for Conven-
tional Cruise Control.
Ÿ Refer to page 87.
■ Lane Departure Warning OFF indicator light
xThis indicator illuminates when the Lane Departure Warning and Lane Sway Warning are
off.
x It also illuminates when the ignition switch is turned to the ON position, and then approxi-
mately 7 seconds after the engine starts, the Lane Departure Warning will be turned off or
remain illuminated depending on the current status (ON or OFF).
Ÿ Refer to page 70.
■ Pre-Collision Braking System OFF indicator light
xIlluminates when the Pre-Collision Braking System and Pre-Collision Throttle
Management are off.
x It also illuminates when the ignition switch is turned to the ON position, and then turns off
approximately 7 seconds after the engine starts.
Ÿ Refer to page 31.
■ Vehicle Dynamics Control OFF indicator light
xIt illuminates when the engine starts and turns off within approximately 2 seconds.
x It illuminates when the Vehicle Dynamics Control OFF switch is pressed and Vehicle
Dynamics Control is off. Refer to the Owner’s Manual for your vehicle.
■ Brake system warning light (red)
If the brake system warning light should illuminate while driving with the parking brake fully
released, turn off the Pre-Collision Braking System. Also, do not use Adaptive Cruise Con-
trol or Conventional Cruise Control.
■Electronic parking brake indicator light
This indicator light illuminates when the electronic parking brake is applied.
Ÿ Refer to the Owner’s Manual for details.
■Vehicle Dynamics Control warning light
This indicator illuminates when the engine switch is turned to the “ON” position, and turns
off approximately 2 seconds after the engine is started. It will illuminate if there is a malfunc-
tion in the VDC electrical control system.
* Refer to the Owner’s Manual for details.

Pre-Collision Braking System
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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
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CAUTION
xIn the following situations, turn off the Pre-Collision Braking System. Other-
wise the Pre-Collision Braking System may activate unexpectedly.
- When the vehicle is being towed
- When loading the vehicle onto a carrier
- When a chassis dynamometer, free-rollers or similar equipment is used
- When a mechanic lifts up the vehicle, starts the engine and spins the wheels freely
- When passing hanging banners, flags or branches, or when thick/tall vege- tation is contacting the vehicle
- When using a drive-through car wash
x The Pre-Collision Braking System may activate in the following situations.
Therefore concentrate on safe driving.
- When passing through an automatic gate (opening and shutting)
- When driving close to the vehicle in front
- When driving in a location where the grade of the road changes rapidly
- 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 or other sub-
stances to obscure the view
- When passing through clouds of steam or smoke, etc.
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Pre-Collision Braking System
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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
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Apply Brake To Hold
Position

Pre-Collision Braking System
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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.
x Even 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”.
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Pre-Collision Braking System
31
■Pre-Collision Braking System OFF indicator light
This indicator light illuminates when the igni-
tion switch is turned to the ON position, and
remains illuminated for approximately 7 sec-
onds after the engine starts. It turns on when
the Pre-Collision Braking System is turned off.
It also illuminates under the following condi-
tions.
x When the EyeSight system has a malfunc-
tion
Ÿ Refer to page 86.
x When the EyeSight system has stopped
temporarily
Ÿ Refer to page 87.
NOTE
When the Pre-Collision Braking System OFF indicator light is turned on, the
Pre-Collision Braking System (including the Pre-Collision Braking Assist func-
tion) does not operate.
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