Acura 2011 ZDX Navigation - Manual (Page 130)

Navigation System 129
System Limitations
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.
GPS Reception Issues
The signals received from the GPS
satellites are extremely weak (less than
a millionth of the strength of a local FM
station) and require an unobstructed
view of sky. The signal can easily be
interrupted or interfered with by the
following:
• Aftermarket metallic window tint
above or to the sides of the GPS
antenna (located on the back of the
navigation display)
• Cell phones, PDAs, or other
electronic devices docked in a cradle
or lying loose on the dashboard
• Remote starters or “hidden” vehicle
tracking systems mounted near the
navigation unit
• Other aftermarket audio electronic
devices mounted near the navigation
unit
• Trees, tall buildings, freeway
overpasses, tunnels, or overhead
electrical power wires
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
Route Preference on page 53. You may
also have Unverified Area Routing set
to OFF. See Unverified Area Routing on
page 106.
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 occurs 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), the
address 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 is actually located.
You may find that the system
occasionally reboots. This is indicated
by the display returning to the
navigation system 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.