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TIPS FOR THE NAVIGATION SYSTEM
GPS (GLOBAL POSITIONING SYSTEM)
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 from only two satellites or
less, errors may occur in the position. Modifying or adjusting the
system will not prevent these errors.
LIMITATIONS OF THE NAVIGATION SYSTEM
This navigation system calculates the current position using
satellite signals, various vehicle signals, map data, etc. However,
an accurate position may not be shown depending on satellite
conditions, road conguration, vehicle condition or other
circumstances.
The Global Positioning System (GPS) developed and operated
by the U.S. Department of Defense provides an accurate current
position, normally using 4 or more satellites, and in some case 3
satellites. The GPS system has a certain level of inaccuracy. While
the navigation system compensates for this most of the time,
occasional positioning errors of up to 300 feet (100 m) can and
should be expected. Generally, position errors will be corrected
within a few seconds.
The GPS signal may be physically obstructed, leading to
inaccurate vehicle position on the map screen. Tunnels, tall
buildings, trucks, or even the placement of objects on the
instrument panel may obstruct the GPS signals.
The GPS satellites may not send signals due to repairs or
improvements being made to them.
Even when the navigation system is receiving clear GPS
signals, the vehicle position may not be shown accurately or
inappropriate route guidance may occur in some cases.
CAUTION
l The installation of window tinting may obstruct the GPS signals.
Most window tinting contains some metallic content that
will interfere with GPS signal reception of the antenna in the
instrument panel. We advise against the use of window tinting on
vehicles equipped with navigation systems.
TIPS FOR THE NAVIGATION SYSTEM
217
Navigation System
7
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