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86 Navigation
Read First
On-screen Buttons and Other buttons
To use this software, you normally have to touch the buttons on the touch screen.
You only need to confirm selections and changes when the application needs to be restarted, when an important setting is
changed, or when a section of the user's data/settings may be lost. Other than that, when using the button selected content is
saved immediately without requiring confirmation, and the new setting is applied.
Type Example Explanation Use
Button Touch to start a function, open a new screen, and
save settings. To u c h o n c e .
Button with
numbers displayed Current fields or setting
s are displayed on the
button. Touch this button to change the value. After
changing, the value you enter is displayed on the
button. To u c h o n c e .
Icon Displays status information.Some icons can also be used as buttons. Touch
once.
List If there are multiple options available, the selection
items are displayed as a list. To v i e w t h e l i s t , t o u c h a n d
slide your finger up and
down. Because the scrolling speed changes
depending on the speed of the slide, you can reach
the end of the list, with ju st a small, quick flick of
your finger. Also, when using the
/ buttons,
touch the number you want to move through the
pages.
Radio button / When there are only a few selection items, you can
use the radio buttons instea
d of a list. Where only
one value can be selected. Touch this button to select the new value.
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162 Navigation
Reference Data
Real-time traffic information (TMC)
TMC ( Traffic Message Channel) offers real-time traffic conditions. This
can help you to avoid traffic jams th at could not be anticipated due to
road closures or accidents.
TMC uses a dedicated XM satellite ra dio to broadcast real-time traffic
information.
The default settings use traffic information when searching for a route.
If traffic data normally broadcast in your region can be accessed, this
received information is automatically taken into account. This does not
need to be manually set. XM sate llite radio stations broadcasting TMC
data are searched for automatica lly, and decoded information is
immediately used to search for routes . If traffic information that might
affect the current route is received , a warning is displayed indicating
that the route will be searched for again, and navigation continues
using a new, optimal route taking into account the latest traffic
conditions.
By delaying the timing before applying a route that has been searched
again, the user can check the route and fine-tune the details creating
the optimal search results. You can se t this from Traffic settings. (See
Page 170.) When traffic information is being received, a special icon ( ) is
displayed on the map. When there is no traffic information available for
the route, this icon indicates the status of the traffic information
receiver, and when information is rece
ived, the type of upcoming traffic
information is displayed.
Road sections affected by traffic co nditions are displayed in a different
color on the map, and a small icon representing the type of traffic
condition is displayed above the road.
Touch to display the Traffic Summary screen.
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Navigation 185
Further Information
NOTE•Because the GPS satellite is in orbit around the earth, the reception status for
the electromagnetic waves changes depend ing on their position at that point
in time, even if your vehicle is in th e same place. Also, electromagnetic-waves
from satellites near the horizon can be easily influenced by surrounding
obstacles.
• At times, satellites under the control of the US Department of Defence will
intentionally drop positioning accuracy.
Regarding Errors in Current Position Display
The system displays the vehicle current position based on GPS
information and data from various sensors and road maps. However,
when the radiowave signals from GPS satellites are weak or when
signals are received only from two sate llites or less, errors may occur in
the position. Modifying or adjusting the system will not prevent these
errors.
• In underground buil dings and indoor
parking lots • In places with a lot of overgrown
trees and so on
• Under elevated roads • Roads at the base of cliffs and caves