Lexus GS250 2012 Owner's Manual

3144-5. Using the driving support
GS350/250_EE (OM30C36E)
Operating narrow mode
Select while in parallel parking assist mode.
Confirm the warning on the caution screen. If you agree, select
“I Agree”. To cancel narrow mode, select .
When the system is switched to narrow mode, the indicator on
will be turned on.
Select again to
switch the system to the
normal mode.
1
2
3

3154-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
Area displayed on screen
The parking assist monitor
displays an image of the view
from the bumper of the rear
area of the vehicle.
To adjust the image on the
parking assist monitor screen.
(P. 372)
• 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 cannot be seen on
the screen.
• The camera uses a special lens.
The distance of the image that
appears on the screen differs
from the actual distance.
• Items which are located higher
than the camera may not be dis-
played by the monitor.
Lexus parking assist monitor precautions
Corners of bumper

3164-5. Using the driving support
GS350/250_EE (OM30C36E)
Lexus parking assist monitor camera
The camera for the parking
assist monitor is located above
the license plate.
Using the camera
If the camera lens becomes dirty, it cannot transmit a clear
image. If water droplets, 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.
Differences between the screen and the actual road
The distance guide lines and the vehicle width extension guide
lines may not actually be parallel with the dividing lines of the
parking space, even when they appear to be so. Be sure to check
visually.
The distances between the vehicle width extension 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 visu-
ally.
The distance guide lines give a distance guide for flat road sur-
faces. In any of the following situations, there is a margin of

3174-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)error between the guide lines on the screen and the actual dis-
tance/course on the road.

3184-5. Using the driving support
GS350/250_EE (OM30C36E)
When the ground behind the vehicle slopes up sharply
The distance guide lines will
appear to be closer to the vehi-
cle than the actual distance.
Because of this, objects will
appear to be farther away than
they actually are. In the same
way, there will be a margin of
error between the guidelines
and the actual distance/course
on the road.
When the ground behind the vehicle slopes down sharply
The distance guide lines will
appear to be further from the
vehicle than the actual dis-
tance. Because of this, objects
will appear to be closer than
they actually are. In the same
way, there will be a margin of
error between the guidelines
and the actual distance/course
on the road.

3194-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
When any part of the vehicle sags
When any part of the vehicle
sags due to the number of pas-
sengers or the distribution of
the load, there is a margin of
error 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 a flat surfaced objects (such as
the road). It is not possible to determine the position of three-
dimensional objects (such as vehicles) using the estimated course
lines and distance guide lines. When approaching a three-dimen-
sional object that extends outward (such as the flatbed of a
truck), be careful of the following.
Estimated course lines
Visually check the surround-
ings and the area behind the
vehicle. In the case shown in
the illustration, 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.
Estimated course lines
A margin of error

3204-5. Using the driving support
GS350/250_EE (OM30C36E)
Distance guidelines
Visually check the surround-
ings and the area behind the
vehicle. On the screen, it
appears that a truck is parking
at point . However, in real-
ity if you back up to point ,
you will hit the truck. On the
screen, it appears that is
closest and is furthest
away. However, in reality, the
distance to and is the
same and is farther than
and .
2
1
1
3
13
21
3

3214-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
If you think something is wrong
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 any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Things you should know
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 tempera-
ture is low
• There are water drop-
lets on the camera
• It is raining or humid
• Foreign matter (mud
etc.) is adhering to
the camera
• There are scratches
on the camera
• Sunlight or head-
lights are shining
directly into the cam-
era
• The vehicle is under
fluorescent lights,
sodium lights, mer-
cury lights etc.
If this happens due to
these causes, it does
not indicate a malfunc-
tion.
Back up while visually
checking the vehicle’s
surroundings. (Use the
monitor again once
conditions have been
improved.)
To adjust the image on
the parking assist mon-
itor screen. (P. 3 7 2 )

3224-5. Using the driving support
GS350/250_EE (OM30C36E)
The image is blurry
Dirt or foreign matter
(such as water droplets,
snow, mud etc.) is
adhering to the camera.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
alignment
The camera or sur-
rounding area has
received a strong
impact.
Have the vehicle
inspected by any
authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
The guide lines are
very far out of align-
mentThe camera position is
out of alignment.
Have the vehicle
inspected by any
authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
The estimated course
lines move even
though the steering
wheel is straightThere is a malfunction
in the signals being
output by the steering
sensor.
Have the vehicle
inspected by any
authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
SymptomLikely causeSolution

3234-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
Guide lines are not dis-
playedThe trunk lid is open.
Close the trunk lid.
If this does not resolve
the symptom, have the
vehicle inspected by
any authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
“System is initializ-
ing.” is displayed
• The battery has been
reinstalled.
• The steering wheel
has been moved
while the battery was
being reinstalled.
• Battery power is low.
• The steering sensor
has been reinstalled.
• There is a malfunc-
tion 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 inspected by
any authorized Lexus
dealer or repairer, or
another duly qualified
and equipped profes-
sional.
• On the system initial-
ization screen, select
the “?” button to dis-
play the operating
procedure.
SymptomLikely causeSolution