brakes SUBARU LEGACY 2016 6.G Driving Assist Manual

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 supports control of drifting out of a lane by detecting lane markings (e.g., white
lines) on highways, etc. and assisting steering operation.
Ÿ Refer to page 54.
■Pre-Collision Throttle Management
This function reduces accidental forward movement caused by the selector 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 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.

32
Adaptive Cruise Control
Adaptive Cruise Control is a driving support system intended to allow more comfortable driving on
expressways, freeways and interstate highways. The vehicle in front in the same traffic lane is
detected by means of the stereo cameras, and your vehicle tracks the vehicle in front (up to the
maximum speed of the set vehicle speed) while automatically maintaining a following distance that
corresponds to the speed of the vehicle in front. Through operation of the electronic parking brake,
the system uses the vehicle’s conventional braking system to stop your vehicle when the vehicle
in front is stopped. The vehicle is capable of being controlled at a speed between approximately 0
and 90 MPH (145 km/h). Please remember that you should not exceed posted speed limits.
WARNING
xThis system does not provide the driver with an automatic driving function
that handles all traffic conditions.
xDo not rely excessively on Adaptive Cruise Control. This system is not intended
to assist in driving when the driver is not paying full attention to what is ahead of
him/her due to distractions or a lack of concentration while driving, or under
conditions of poor visibility. It is not intended to prevent rear-end collisions.
Strive for safe driving at all times. Always maintain a safe following distance
behind the vehicle in front of you, pay attention to your surroundings and the
driving conditions, and operate the brake pedal and take other action as neces-
sary.
xSet the set vehicle speed within a range that is appropriate to the road con-
ditions and surrounding environment.
xBefore using the system, perform a daily inspection and verify that there
are no malfunctions of the tires or brakes.
Ÿ Refer to the separate “Warranty and Maintenance Booklet”.
xThe system may not operate correctly under the conditions listed below.
When these conditions occur, do not use Adaptive Cruise Control.
- 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 vehicle.
- 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 malfunction.
- 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.

Adaptive Cruise Control
33
Continued on next pageŸ
xAdaptive Cruise Control is designed for use on expressways, freeways, toll
roads, interstate highways and similar limited access roads. It is not intended
to be used in city traffic. In the following conditions, do not use Adaptive
Cruise Control. Doing so may result in an accident.
- Ordinary roads (roads other than those mentioned above)
Depending on the driving environment (complexity of roads and other fac-
tors), the system may not be able to perform as the traffic conditions
require, and that may result in an accident.
- Roads with sharp curves or winding roads
- Frozen roads, snow-covered roads or other slippery road surfaces
- The tires may spin, causing loss of control of the vehicle.
- Traffic conditions when frequent acceleration and deceleration make it diffi-
cult to maintain the following distance
It may not be possible for the system to perform as the traffic conditions
require.
- Steep downhill grades
The set vehicle speed may be exceeded.
- On a steep continuous downhill grade
The brakes may overheat.
- Roads and overpasses with repeated steep uphill and downhill grades
Detection of the vehicle in front may be lost, or the road surface may be
detected instead of the vehicle in front, making correct control impossible.
- When entering a sharp curve into an interchange or junction, or a service
area, parking area, toll booth or other facilities
Detection of the vehicle in front may not be possible.
- When there are changes in brightness, such as at a tunnel entrance or exit
- When visibility is poor due to sand, smoke or water vapor blowing in the
wind, or when the vehicle in front or oncoming traffic causes water, snow,
dirt or dust to obscure the view
Detection of the vehicle in front may be lost, or water or other substances
may be incorrectly detected instead, making correct control impossible.
- When there is snow, frost, dirt or dust on the windshield or it is clouded
S00652

Adaptive Cruise Control
37
CAUTION
xAfter Adaptive Cruise Control has started, it maintains control continuously
according to the behavior of the vehicle in front. When your vehicle comes
to a stop if the vehicle in front has stopped, the stay-stopped function is
engaged. However, if the EyeSight stereo cameras lost detection of the
vehicle in front, the system may not stop your vehicle. Operate the brake
pedal and maintain the correct following distance as necessary. Be aware
that the EyeSight system has difficulty detecting objects or vehicles that
have a relative speed in comparison to your vehicle. Therefore, if the
EyeSight system loses detection just as you are approaching a line of
stopped cars, for example - you will have to brake manually.
xThere is no possibility that the vehicle will automatically begin moving from
a stay-stopped condition without operation from the driver.
xIf the conditions for automatically canceling cruise control (
Ÿ refer to page
49) are met while the vehicle is stay-stopped, Adaptive Cruise Control is
canceled and for safety reasons, the electronic parking brake is automati-
cally applied.
xBraking may not be sufficient depending on the following conditions. Oper-
ate the brake pedal and decelerate as necessary.
- Vehicle conditions (amount of load, number of occupants, etc.)
- Road conditions (grade, slipperiness, shape, bumps, etc.)
- Vehicle maintenance status (brake systems, tire wear, air pressure, tem-
porary spare tire is being used, etc.)
- When the brakes are cold. (For example, just after the engine is started
or when the outside temperature is low.)
- For a short period of time when driving after the engine is started until the
engine has warmed-up
- When the brakes are overheated on downhill grades (braking effective-
ness may be reduced)
- When driving in rain or after washing the vehicle (the brakes may
become wet and braking effectiveness may be reduced)
- When towing a trailer or another vehicle, etc.

Adaptive Cruise Control
41
xIf your vehicle no longer detects the vehicle
in front
The vehicle gradually accelerates back to
the set target vehicle speed and will drive at
that constant speed.
If a vehicle in front is detected while accel-
erating to the set target vehicle speed, vehi-
cle tracking will be started again.
CAUTION
If the driver operates the brake pedal during automatic braking, the pedal
may feel stiff; however, this is not a malfunction. By depressing the brake
pedal further you can apply more braking force. When the brake pedal is
released it will return to its original condition.
NOTE
xWhen the brakes are applied by Adaptive Cruise Control, the vehicle’s
brake lights will illuminate.
xEven if there is no lead vehicle present, on a downhill grade, the Adaptive
Cruise Control’s automatic brake may operate in order to maintain the set
target vehicle speed.
xSome noises may be audible during automatic braking. This is caused by
the braking control and does not indicate a malfunction.
xTo temporarily accelerate quickly, use the accelerator pedal. After acceler-
ating, the vehicle will gradually return to the set target vehicle speed shown
in the gauge cluster.
xThere are cases where the vehicle in front has turned off the road while
your vehicle is still controlled by the automatic braking operation that has
activated due to the deceleration of the vehicle in front of yours. In those
cases, the brake will be automatically released gradually. Depress the
accelerator pedal if necessary.
xThe lead-vehicle tracking function has the following characteristics:
- If the lead vehicle’s brake lamp is detected, deceleration is started more
quickly than without detection.
- If the vehicle moves to the fast lane while travelling more than 37 MPH
(60 km/h), the system starts acceleration to the set vehicle speed more
quickly because it is linked with the turn signal.
S01981

Adaptive Cruise Control
47
●Canceling the stay-stopped function
If any of the following operations is performed, the stay-stopped function will be canceled
and the Adaptive Cruise Control will be canceled at the same time.
xThe brake pedal is depressed.
xThe (CRUISE) switch is pressed.
xThe electronic parking brake switch is pressed to apply the Electronic Parking Brake.
●Setting Adaptive Cruise Control while the Electronic Parking Brake is applied
If the Electronic Parking Brake is applied, then before setting cruise control, release the
Electronic Parking Brake by depressing the accelerator pedal or by other specified
means. For details of how to release the electronic parking brake, refer to the Owner’s
Manual for your vehicle.
WARNING
xWhile the stay-stopped function is engaged, do not exit the vehicle.
xThe stay-stopped function is not a replacement for engaging the parking
brake.
When parking, always apply brakes manually to come to a full stop, then
set the electronic parking brake.
CAUTION
The stay-stopped function of cruise control will be canceled under the follow-
ing conditions:
xThe vehicle is in stay-stopped mode for approximately 2 minutes or more.
(A buzzer will sound 5 intermittent beeps and 1 long beep.)
xAny condition in which automatic cancellation is met. (A buzzer sounds 1
long beep.)
Ÿ Refer to page 49.
After the stay-stopped function has been canceled, the Electronic Parking
Brake will be automatically applied and the brake system warning light will
illuminate. However, if any canceling condition for the Electronic Parking
Brake (i.e. the interlock system with the accelerator pedal, switch operation of
the electronic parking brake, etc.) is fulfilled, the Electronic Parking Brake will
not work. (For details, refer to the Owner’s Manual for your vehicle.)
If the accelerator pedal is only slightly depressed while the stay-stopped func-
tion is activated, the stay-stopped function of cruise control may be canceled,
and the Electronic Parking Brake may not work.

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.
xCheck that there are problems with the tires and brakes during a daily
inspection before using the system.
Ÿ Refer to “Warranty and Maintenance Booklet”.
xThe 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 worn or have large variations in wear conditions are
installed.*1
- Tires other than those of the designated size are installed.*1
- The wheel balance is abnormal (e.g., the balance weight is removed or
misaligned.)*1
- The wheel alignment is not adjusted within 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

Conventional Cruise Control
75
Conventional Cruise Control
Conventional Cruise Control is a driving support system intended to allow more comfortable
driving on expressways, freeways and interstate highways. It can be used to travel at a con-
stant speed by maintaining the vehicle speed that was set by the driver. Please remember
that you should not exceed posted speed limits.
About Conventional Cruise Control
WARNING
xWhen Conventional Cruise Control is functioning, the system does not per-
form tracking control to maintain following distance, as when using Adap-
tive Cruise Control.
Strive for safe driving and operate the brake pedal to decelerate the vehi-
cle as necessary in order to ensure a safe following distance from the vehi-
cle in front.
xUnder the following conditions, do not use the Conventional Cruise
Control. Doing so may result in an accident.
- Roads with heavy traffic or roads with sharp curves
You may fail to drive at a speed that is appropriate for the road condi-
tions, possibly resulting in an accident.
- Frozen roads, snow-covered roads or slippery road surfaces
The tires may spin, causing loss of control of the vehicle.
- Steep downhill grades
The set vehicle speed may be exceeded.
- On a steep continuous downhill grade
The brakes may overheat.
CAUTION
When using Cruise Control, be sure to check the EyeSight display area to
confirm which Cruise Control mode is selected: Adaptive Cruise Control or
Conventional Cruise Control.
xIf Adaptive Cruise Control is selected,
“” (Adaptive Cruise Control
indicator) illuminates.
xIf Conventional Cruise Control is selected,
“” (Conventional Cruise
Control indicator) illuminates.
NOTE
xWhen the (CRUISE) switch is first turned on, the Adaptive Cruise
Control is set.
xTo change the Cruise Control mode, press and hold the / (fol-
lowing distance setting) switch for approximately 2 seconds or longer.
(This is effective only when the main Cruise Control is on and neither
Adaptive Cruise Control nor Conventional Cruise Control are set.)
xConventional Cruise Control can be used even when EyeSight is tempo-
rarily turned off.