window Lexus GS300 2003 Basic Functions

Displaying POI
47 A window with a limited choice of points of in-
terest will be displayed. When you touch
your desired type of point of interest, icons
will appear on the Map screen indicating
where the POI addresses are located.
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More: If you cannot find your desired point of
interest on the limited choice screen, touch
this switch. The screen then displays the
complete POI listing screen. You can display
up to 5 categories of icons on the screen.
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When you select a point of interest type from
either the limited list or the complete list, the
screen will display icons at those locations
on the Map screen.
Touching the
ªDeleteº switch will delete
the last selected icon.
Local POI list: If you want to search the
nearest point of interest, touch this switch.
Then choose one of the categories. The sys-
tem will list the points within 20 miles (32 km).
You can sort the local POI list by three differ-
ent ways as follows.
Icon: In the order of the POI icons
Dist.: In the order of distance from your cur-
rent location.
Name: In alphabetical orderBy turning the
ªRouteº switch on, you can
search the POI on the route when in the route
guidance mode.
Touch the
of your desired point of inter-
est. Points of interest which you chose are
displayed on the Map screen.
To turn off the icons of the points of inter-
est on the Map screen, touch the
ªPOI
offº
switch.

Limitations of the Navigation System
53 This navigation system calculates the
current vehicle position using satellite
signals, various vehicle signals, map
data, etc. However, the accurate position
may not be shown depending on the sat-
ellite condition, road configuration, ve-
hicle condition or other circumstances.
The Global Positioning System (GPS) devel-
oped and operated by the U.S. Department
of Defense provides an accurate current ve-
hicle position using 3 to 4 satellites. The GPS
system has a certain level of inaccuracy built
in for security reasons. While the navigation
system will compensate for this most of the
time, occasional positioning errors up to 300
feet can and should be expected. Generally,
position errors will be corrected within a few
seconds.
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When your vehicle is receiving signals from
the satellites, the ªGPSº mark appears at the
top left of the screen.
The GPS signal may be physically ob-
structed, leading to inaccurate vehicle posi-
tion on the map display. Tunnels, tall build-
ings, trucks, or even the placement of
objects on the instrument panel may obstruct
the GPS signals.
The installation of window tinting may also
obstruct the GPS signals. Most window tint-
ing contains some metallic content that will
interfere with the GPS signal reception. We
recommend not to use the window tinting on
vehicles equipped with navigation systems.The GPS satellites may not send signals due
to repairs or improvements being made to
them.
Even when the navigation system is receiv-
ing good GPS signals, the vehicle position
may not be shown accurately or inappropri-
ate route guidance may occur in some
cases.