Limitations Of The Navigation System - Toyota TNS350 Owner's Manual

APPENDIX
Limitations of the navigation
system
This navigation
the current vehicle position using
satellite signals,
signals, map data, etc. However, the
accurate position may not be shown
depending on the satellite condition,
road configuration, vehicle condition or
other circumstances.
The Global Positioning System (GPS)
developed and operated by the U.S.
Department of Defense provides an
accurate current vehicle position, normally
using 4 or more satellites, and in some
cases 3 satellites. The GPS system has
a certain level of inaccuracy. While the
navigation system will compensate for this
most of the time, occasional positioning
errors of up to 100 m (300 feet) can and
should be expected. Generally, position
errors will be corrected within a few
seconds.
248 TNS 350
system calculates
various vehicle
When your vehicle is receiving signals from
the satellites, the "GPS" mark appears at
the top left of the screen.
The GPS signal may be physically
obstructed, leading to inaccurate vehicle
position on the map display. 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.
NOTICE
The installation of window tinting
may obstruct the GPS signals. Most
window tinting contains some metallic
content that will interfere with GPS
signal reception. We advise against
the use of window tinting on vehicles
equipped with navigation systems.