System Limitations - Honda 2006 Civic Sedan Owner's Manual

System Limitations

Although your navigation system is one
of the most highly sophisticated pieces
of equipment you will find in a modern
automobile, you may find during its use
that it has certain limitations.
The system uses signals from the
Global Positioning System (GPS) to aid
in determining its current location. The
GPS is operated by the U.S.
Department of Defense. For security
reasons, there are certain inaccuracies
built into the GPS that the navigation
system must constantly compensate for.
This can cause occasional positioning
errors of up to several hundred feet.
For example, in urban areas where
streets are close together, this could
cause the system to show that you are
traveling on a street that parallels the
street you are actually on. The system
will, under most circumstances, correct
itself while you drive.
92 Navigation System
Also, depending on your current view
of the sky and the position of the
satellites, the elevation may be shown
incorrectly. You may also notice some
delay of the vehicle position icon at
intersections; this is normal.
Although the system will direct you to
your desired destination, it may not
always generate what you consider to
be the most direct route. Try changing
the method of routing (see Changing
the Routing Method on page 44). You
may also have Unverified Area Routing
set to "OFF" (see Unverified Area
Routing on page 77).
Additionally, the mapping database
contains verified and unverified maps.
See Map Overview on page 6.
A disclaimer screen will warn you if
your route includes unverified streets.
Unverified streets may be missing from
the map, in the wrong location, or have
an incorrect name or address range.
Exercise additional caution when
driving in these unverified areas.
The destination icon shows the
approximate location of the destination.
This happens because a city block can
have as many as 100 possible addresses
(for example, the 1400 block is
followed by the 1500 block.) Since
most cities use only a portion of the
100 possible addresses (for example, in
the 1400 block, the addresses may only
go up to 1425 before the 1500 block
starts), an address of 1425 will be
shown a quarter of the way down the
block by the system instead of at the
end of the block where the destination
actually is.
You may find that the system
occasionally "reboots." This is
indicated by the display returning to the
globe screen. A reboot can be caused
by a number of things, such as extreme
temperatures or shock from bumpy
roads. It does not necessarily indicate a
problem that requires service. If this
happens frequently, please see your
dealer.