SUBARU LEGACY 2017 6.G Driving Assist Manual

Lane Keep Assist
58
The system detects lane markings in order to help prevent departure from the lane. If you
drive on expressways, freeways or interstate highways at speeds above approximately 40
MPH (65 km/h) and the vehicle is about to depart from the lane, the system assists the
steering operation by turning it to the direction that will help prevent the lane departure.
■How to use Lane Departure Prevention Function
Press the (Lane Keep Assist) switch.
Lane Keep Assist is turned on, and “ ” (Lane Keep Assist indicator) (white) is displayed
on the EyeSight display area of the multi information display.
Lane Departure Prevention Function
S02043
There is a strong
possibility of lane
departure. There is a
possibility of lane
departure.
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MPG
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Lane Keep
Assist indicator
(white)

Lane Keep Assist
59
Press the (Lane Keep Assist) switch once again to turn it off, and “ ” (Lane Keep
Assist indicator) is turned off on the EyeSight display area.
The Lane Departure Prevention Function goes into the standby status, and the lane indica-
tor illuminates when all of the following conditions are met.x The vehicle speed is between approximately 40 MPH (65 km/h) and 90 MPH (145 km/h).
x The system is detecting the lane markings.
x The driver is holding the steering wheel.
x When driving on a road that has a lane width that is between approximately 10 ft (3 m)
and 15 ft (4.5 m).
x When driving on a straight road or gentle curve.
x When driving near the center of a lane.
When the vehicle is about to depart from the lane, Lane Departure Prevention Function
starts to operate and “ ” (Lane Keep Assist indicator) illuminates in green while it is
operating.
NOTE
x If you just lightly put your hands on the steering wheel for a certain period
of time or if you do not operate the steering wheel, the function will auto-
matically be canceled. (“ ” Lane Keep Assist indicator) illuminates in
white again.)
x Lane Departure Prevention Function operates when the system deter-
mines that the vehicle will depart from the lane if you continue to drive in
the same manner. Therefore, it operates at an earlier timing than Lane
Departure Warning (
Ÿ Refer to page 68.) (it may depend on the surround-
ing environment and road condition).
x The lane indicator in the standby status and in operation may illuminate
only on the left side or right side.
milesA
MPG
milesA
MPG
milesA
MPG
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Lane Keep
Assist
indicator
(white)
Turned on Standby status In operation
(white) (green)

Lane Keep Assist
60
■Canceling Lane Departure Prevention Function
●
Cancellation by the operation of a driver (In case no beep sounds)
The following operation cancels Lane Departure Prevention Function.
If the function is canceled, “ ” (Lane Keep Assist indicator) and the lane indicator are
turned off on the EyeSight display area. x Press the (Lane Keep Assist) switch.
Either of the following operations temporarily cancels the Lane Departure Prevention Function.
While temporarily canceling the function, “ ” (Lane Keep Assist indicator) on the
EyeSight display area illuminates in white and the lane indicator is turned off. x Depressing the brake pedal
x Operating the turn signal lever
x When the system determines that the driver operates the steering wheel to make a lane
change.
x Turning on the hazard warning flasher switch
●Automatic cancellation by the system (An audible beep will sound.)
Under the following conditions, a beep sounds and the Lane Departure Prevention Function
is temporarily canceled.
While the function is temporarily canceled, “ ” (Lane Keep Assist indicator) on the
EyeSight display area illuminates in white and the lane indicator is turned off.
x When the system cannot detect the lane.
x The windshield wiper operates at a high speed.
x The vehicle speed is less than approximately 37 MPH (60 km/h) or is more than approxi-
mately 93 MPH (150 km/h).
x The ABS, the Vehicle Dynamics Control or the Traction Control System operates.
x Either the driver’s door, the front passenger’s door or the rear door is open.
x The seatbelt of driver’s seat is unfastened.
x The electronic parking brake is applied (The electric parking brake indicator light illumi-
nates or blinks).
x The select lever is shifted to a position other than or position.
x The system could not detect the steering
operation by the driver for a certain period of
time.
- When the system detected no steering operation, the interruption screen appears
on the multi information display. The inter-
ruption screen continues to appear until
the system detects the steering operation.
If the system still cannot detect the steer-
ing operation, the Lane Departure Preven-
tion Function is automatically canceled.
DM
milesA
MPG
Keep Hands OnSteering Wheel
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Lane Keep Assist
61
xWhen entering a sharp curve.
x When driving on a sharp curve.
x When the system determines that the steering assistance is difficult to continue due to the
road condition.
x When the system determines that the steering assistance is difficult to operate due to
another system.
x When the EyeSight system is temporarily stopped. (“ ” (EyeSight Temporary Stop
indicator: White) is turned on.)
Ÿ Refer to page 86.
x When the EyeSight system has a malfunction. (“ ” (EyeSight Warning indicator:
Yellow) is turned on.)
Ÿ Refer to page 87.
NOTE
If the function is automatically canceled during the standby status (“ ”
(Lane Keep Assist indicator) illuminates in white), no beep sounds.

62
Pre-Collision Throttle Management
When an obstacle is detected in front of the
vehicle, and the vehicle is stopped or traveling
very slowly, if the system determines that the
accelerator pedal has been depressed by
more than the necessary amount (due to
driver error), it greatly restricts engine output
and ensures that vehicle forward movement is
slower than normal in order to give the driver
additional time to brake or react.
During system operation, a buzzer will sound
several short beeps, and “Obstacle Detected”
will be shown on the warning screen area of
the multi information display. The lead vehicle
indicator will also flash.
This function only activates when the trans-
mission select lever is in the or posi-
tion.
WARNING
Do not rely excessively on Pre-Collision Throttle Management. Pre-
Collision Throttle Management is not designed to help you avoid colli-
sions in many situations. Always check the select lever and pedal posi-
tions as well as the surrounding environment before starting and
operating the vehicle. Relying only on Pre-Collision Throttle
Management could result in an accident.x Pre-Collision Throttle Management is not designed to maintain the vehicle
in a stopped condition.
x Pre-Collision Throttle Management will not reduce acceleration under all
conditions. It is also not designed to prevent collisions.
x Pre-Collision Throttle Management will operate when an obstacle is
detected in front. However, this function will not reduce acceleration in
cases where no obstacle is recognized (for example when approaching a
cliff, etc.)
x Do not intentionally depress the accelerator pedal excessively when there
are obstacles nearby. If the driver relies only on Pre-Collision Throttle
Management to control acceleration, collisions may occur.
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“
R e
p e
ate
d s
h o r
t
b e
e p
s”
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Obstacle
Detected
DM

Pre-Collision Throttle Management
63
Continued on next pageŸ
xIf your vehicle is trapped on a railroad crossing and you are trying to
escape by driving through the crossing gate, the stereo cameras may rec-
ognize the crossing gate as an obstacle and Pre-Collision Throttle
Management system may activate. In this case, remain calm and either
continue to depress the accelerator pedal or turn off the Pre-Collision
Throttle Management system.
Ÿ Refer to page 67.
x Pre-Collision Throttle Management may not activate depending on the fol-
lowing conditions:
- The distance between your vehicle and the obstacle, speed difference, and lateral displacement (amount of offset)
- Recognition status of the stereo cameras In particular, the function 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 or smoke in the air
x When light is poor in the evening, early morning, or at night
x In a dark area (indoor parking area, etc.)
x When there is an obstacle outside the area illuminated by the head-
lights
x When affected by strong light from the front (for example sunlight at
sunrise or sunset 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
use of the window washer
x When obstacles cannot be correctly recognized due to water droplets
from rain or the washer, or the wiper blades obstructing the stereo
cameras’ field of view
x When the stereo cameras’ field of view is obstructed (for example by a
canoe on the roof of the vehicle)
x With low obstacles (low wall, crash barrier, low vehicle, etc.)
x When the size and height of an obstacle is smaller than the limitations
of the stereo cameras’ recognition capability
x With small animals or children.
x With pedestrians who are sitting or lying down
x When the rear portion
nearest your vehicle is
too small or too close
(such as a trailer or
oncoming vehicle) the
system may not recog-
nize the part of that
vehicle which is closest
to you.
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Pre-Collision Throttle Management
64
ŸContinued from previous page
xWhen there is a fence or
wall, etc., with a uniform
pattern (striped pattern,
brick, etc.) or with no pat-
tern in front
x When there is a wall or
door made of glass or a
mirror in front
x When an obstacle (another
vehicle, motorcycle, bicy-
cle, pedestrian, animal or
child, etc.) cuts in from the
side or jumps out suddenly
x When starting, if you change lanes and your vehicle is immediately
behind the obstacle
x On sharp curves, steep uphill grades or steep downhill grades
- When the system determines that steering operation by the driver is intended as evasive action
x For your safety, do not test Pre-Collision Throttle Management on its own. It
may operate improperly and cause an accident.
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Pre-Collision Throttle Management
65
Continued on next pageŸ
CAUTION
xIn the following situations, turn off Pre-Collision Throttle Management. Other-
wise Pre-Collision Throttle Management 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 allows the wheels to spin freely
- When passing hanging banners, flags or branches, or when thick/tall vege- tation is contacting the vehicle
x The Pre-Collision Throttle Management may activate in the following situa-
tions. Therefore concentrate on safe driving.
- When your vehicle is close to the vehicle in front
- When passing through an automatic gate
- When your vehicle is in a location where the grade of the road changes rapidly
- When passing through clouds of steam or smoke
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Pre-Collision Throttle Management
66
ŸContinued from previous page
- When there is an obstacle on
a curve or intersection
- When narrowly passing a vehicle or object
- When stopping very close to a wall or a vehicle in front
NOTE
xWhen the accelerator pedal is depressed for approximately three seconds,
Pre-Collision Throttle Management will be released gradually.
x When the Pre-Collision Braking System is turned off, Pre-Collision Throttle
Management is also turned off.
Ÿ Refer to page 30.
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Pre-Collision Throttle Management
67
Pressing and holding the Pre-Collision Braking System OFF switch for approximately 2 sec-
onds or longer will turn off the Pre-Collision Throttle Management System. When 1 short
beep sound emits, this function is turned off and the Pre-Collision Braking System OFF indi-
cator light on the instrument panel illuminates.
To turn the system back on, press and hold the Pre-Collision Braking System OFF switch
again for approximately 2 seconds or longer. When this function is turned on, the Pre-
Collision Braking System OFF indicator light turns off.
Ÿ Refer to page 31.
Turning off Pre-Collision Throttle Management
NOTE
xWhen Pre-Collision Throttle Management is turned off, the Pre-Collision
Braking System also turns off.
x Even when Pre-Collision Throttle Management is turned off, if the ignition
switch is turned off and the engine is restarted, Pre-Collision Throttle
Management will be turned on. The default setting for Pre-Collision
Throttle Management when the vehicle is restarted is “ON”.
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