Lexus IS250 2015 Navigation Manual

290
1. LEXUS PARKING ASSIST MONITOR
IS250/350_Navi_U
1Shift the shift lever to the “R” position.
2Back up until the parking assist guide
line meets the edge of the left-hand di-
viding line of the parking space.
XParking assist guide line
Parking space dividing line
3Turn the steering wheel all the way to
the right, and back up slowly.
4Once the vehicle is parallel with the
parking space, straighten the steering
wheel and back up slowly until the vehi-
cle has completely entered the parking
space.
5Stop the vehicle in an appropriate place,
and finish parking.
PARKING
When parking in a space which is in the
reverse direction to the space described
in the procedure below, the steering di-
rections will be reversed.

291
1. LEXUS PARKING ASSIST MONITOR
IS250/350_Navi_U
PERIPHERAL MONITORING SYSTEM
7
4. LEXUS PARKING ASSIST MONITOR PRECAUTIONS
zThe image adjustment procedure for the
parking assist monitor screen is the same as
the procedure for adjusting the navigation
screen. ( →P. 44)
AREA DISPLAYED ON
SCREEN
The parking assist monitor displays an
image of the view from the bumper of
the rear area of the vehicle.
Screen Displayed area
Corners of bumper
INFORMATION
●The area displayed on the screen may
vary according to vehicle orientation
conditions.
● Objects which are close to either corner
of the bumper or under the bumper can-
not be displayed.
● The camera uses a special lens. The dis-
tance of the image that appears on the
screen differs from the actual distance.
● Items which are located higher than the
camera may not be displayed on the
monitor.

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1. LEXUS PARKING ASSIST MONITOR
IS250/350_Navi_U
THE CAMERA
The camera for the parking assist moni-
tor is located as shown in the illustration.
USING THE CAMERA
If the camera lens becomes dirty, it can-
not transmit a clear image. If water drop-
lets, snow or mud adhere to the lens,
rinse with water and wipe with a soft
cloth. If the lens is extremely dirty, wash
it with a mild cleanser and rinse.
NOTICE
● The parking assist monitor may not oper-
ate properly in the following cases.
• If the back of the vehicle is hit, the posi- tion and mounting angle of the camera
may change.
• As the camera has a water proof con- struction, do not detach, disassemble or
modify it. This may cause incorrect
operation.
• Do not strongly rub the camera lens. If the camera lens is scratched, it cannot
transmit a clear image.
• Do not allow organic solvent, car wax, window cleaner or a glass coating to
adhere to the camera. If this happens,
wipe it off as soon as possible.
• If the temperature changes rapidly, such as when hot water is poured on the
vehicle in cold weather, the system may
not operate normally.
• When washing the vehicle, do not apply intensive bursts of water to the camera
or camera area. Doing so may result in
the camera malfunctioning.
● Do not expose the camera to strong
impact as this could cause a malfunction.
If this happens, have the vehicle
inspected by your Lexus dealer as soon
as possible.

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1. LEXUS PARKING ASSIST MONITOR
PERIPHERAL MONITORING SYSTEM
IS250/350_Navi_U
7
zThe distance guide lines and the vehicle
width guide lines may not actually be paral-
lel with the dividing lines of the parking
space, even when they appear to be so. Be
sure to check visually.
z The distances between the vehicle width
guide lines and the left and right dividing
lines of the parking space may not be equal,
even when they appear to be so. Be sure to
check visually.
z The distance guide lines give a distance
guide for flat road surfaces. In any of the
following situations, there is a margin of
error between the guide lines on the screen
and the actual distance/course on the road.
DIFFERENCES BETWEEN THE
SCREEN AND THE ACTUAL
ROADWHEN THE GROUND BEHIND
THE VEHICLE SLOPES UP
SHARPLY
The distance guide lines will appear to
be closer to the vehicle than the actual
distance. Because of this, objects will ap-
pear to be farther away than they actual-
ly are. In the same way, there will be a
margin of error between the guide lines
and the actual distance/course on the
road.

294
1. LEXUS PARKING ASSIST MONITOR
IS250/350_Navi_U
WHEN THE GROUND BEHIND
THE VEHICLE SLOPES DOWN
SHARPLY
The distance guide lines will appear to
be farther from the vehicle than the ac-
tual distance. Because of this, objects
will appear to be closer than they actual-
ly are. In the same way, there will be a
margin of error between the guide lines
and the actual distance/course on the
road.WHEN ANY PART OF THE
VEHICLE SAGS
When any part of the vehicle sags due to
the number of passengers or the distri-
bution of the load, there is a margin of er-
ror between the guide lines on the
screen and the actual distance/course
on the road.
WHEN APPROACHING
THREE-DIMENSIONAL
OBJECTS
The estimated course lines target flat
surfaced objects (such as the road). It is
not possible to determine the position of
three-dimensional objects (such as vehi-
cles) using the estimated course lines
and distance guide lines. When ap-
proaching a three-dimensional object
that extends outward (such as the flat-
bed of a truck), be careful of the follow-
ing.
A margin of error

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1. LEXUS PARKING ASSIST MONITOR
PERIPHERAL MONITORING SYSTEM
IS250/350_Navi_U
7
XEstimated course lines
ESTIMATED COURSE LINES
Visually check the surroundings and the
area behind the vehicle. In the case
shown below, the truck appears to be
outside of the estimated course lines and
the vehicle does not look as if it hits the
truck. However, the rear body of the
truck may actually cross over the esti-
mated course lines. In reality if you back
up as guided by the estimated course
lines, the vehicle may hit the truck.DISTANCE GUIDE LINES
Visually check the surroundings and the
area behind the vehicle. On the screen,
it appears that a truck is parking at point
B. However, in reality if you back up to
point A, you will hit the truck. On the
screen, it appears that A is closest and C
is farthest away. However, in reality, the
distance to A and C is the same, and B is
farther than A and C.
Positions of A, B and C
C
A B
C
AB

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1. LEXUS PARKING ASSIST MONITOR
IS250/350_Navi_U
5. THINGS YOU SHOULD KNOW
If you notice any of the following symptoms, refer to the likely cause and the solution,
and re-check.
If the symptom is not resolved by the solution, have the vehicle inspected by your Lexus
dealer.
IF YOU NOTICE ANY SYMPTOMS
SymptomLikely causeSolution
The image is difficult to see• The vehicle is in a dark area
• The temperature around
the lens is either high or low
• The outside temperature is
low
• There are water droplets on
the camera
• It is raining or humid
• Foreign matter (mud etc.) is
adhering to the camera
• Sunlight or headlights are
shining directly into the
camera
• The vehicle is under fluo-
rescent lights, sodium lights,
mercury lights etc.Back up while visually check-
ing the vehicle’s surroundings.
(Use the monitor again once
conditions have been im-
proved.)
The procedure for adjusting
the picture quality of the park-
ing assist monitor is the same
as the procedure for adjusting
the navigation screen.
(→ P. 44)
The image is blurryDirt or foreign matter (such as
water droplets, snow, mud
etc.) is adhering to the cam-
era.Rinse the camera lens with
water and wipe it clean with a
soft cloth.
Wash with a mild soap if the
dirt is stubborn.
The image is out of alignmentThe camera or surrounding
area has received a strong im-
pact.Have the vehicle inspected by
your Lexus dealer.
The guide lines are very far
out of alignmentThe camera position is out of
alignment.Have the vehicle inspected by
your Lexus dealer.
•The vehicle is tilted. (There
is a heavy load on the vehi-
cle, tire pressure is low due
to a tire puncture, etc.)
• The vehicle is used on an
incline.If this happens due to these
causes, it does not indicate a
malfunction.
Back up while visually check-
ing the vehicle’s surroundings.
The estimated course lines
move even though the steer-
ing wheel is straightThere is a malfunction in the
signals being output by the
steering sensor.Have the vehicle inspected by
your Lexus dealer.

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1. LEXUS PARKING ASSIST MONITOR
PERIPHERAL MONITORING SYSTEM
IS250/350_Navi_U
7
Guide lines are not displayedThe trunk is open.Close the trunk.
If this does not resolve the
symptom, have the vehicle in-
spected by your Lexus dealer.
The estimated course lines
are not displayed•The steering wheel has
been moved while the bat-
tery was being reinstalled.
• Battery power is low.
• The steering sensor has
been reinstalled.
• There is a malfunction in the
signals being output by the
steering sensor.Stop the vehicle, and turn the
steering wheel as far as it will
go to the left and right.
If this does not resolve the
symptom, have the vehicle in-
spected by your Lexus dealer.
SymptomLikely causeSolution

298
IS250/350_Navi_U
2. INTUITIVE PARKING ASSIST
1. INTUITIVE PARKING ASSIST*
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
1Turn the intuitive parking assist on/off.
zWhen on, the indicator light comes on to
inform the driver that the system is opera-
tional.
The distance to obstacles measured by
the sensors is communicated via the dis-
play and a buzzer when parallel parking
or maneuvering into a garage. Always
check the surrounding area when using
this system.
TYPES OF SENSORS
*: If equipped
INTUITIVE PARKING ASSIST
SWITCH

299
2. INTUITIVE PARKING ASSIST
IS250/350_Navi_U
PERIPHERAL MONITORING SYSTEM
7
■MULTI-INFORMATION DISPLAY
Front corner sensors operation
Front center sensors operation
Rear corner sensors operation
Rear center sensors operation
■NAVIGATION DISPLAY
X When the vehicle is moving forward
: Select to mute the buzzer sounds.
zThe graphic is automatically displayed
when an obstacle is detected. The screen
can be set so that the graphic is not dis-
played. ( →P. 3 0 6 )
XWhen the vehicle is moving backward
zA simplified image is displayed on the
right upper corner of the screen when
an obstacle is detected.
DISPLAY
When the sensors detect an obstacle,
the graphic is shown on the multi-infor-
mation display and navigation display
according to position and distance to
the obstacle.