Cadillac 2005 STS, Manual

Page: 72 / 142

Global Positioning System (GPS)
The Navigation System determines the position of your
vehicle by using satellite signals, various vehicle
signals and map data.
At times, other interferences such as the satellite
condition, road configuration, the condition of the vehicle
and/or other circumstances can interfere with the
Navigation’s ability to determine the accurate position of
the vehicle.
The GPS shows the accurate current position of your
vehicle using signals sent by the GPS Satellites of
the United States Department of Defense. When your
vehicle is not receiving signals from the satellites,
a symbol will appear on the map screen. Refer to
Symbols on page 2-8.
This system may not be available/or interference may
occur if the following happens:
•
Signal obstructions caused by tall buildings, large
trucks, tunnels,
•
objects located on top of the instrument panel,
•
satellites will not send signals if they are being
repaired or improved,
•
after-market glass tinting has been applied to the
vehicle’s windows.
Notice: Do not apply after-market glass tinting to
the vehicle’s windows. Glass tinting will interfere
with the system’s ability to receive GPS signals and
cause the system to malfunction. You might have
to replace the window to correct the problem.
This would not be covered by your warranty.
For more information if you are experiencing a problem,
see If the System Needs Service on page 2-66 and
Problems with Route Guidance on page 2-65.
Vehicle Positioning
At times, the position of the vehicle on the map may be
inaccurate due to one or more of the following
reasons:
•
The road system has changed.
•
The vehicle is driving on slippery road surfaces
such as in sand, gravel and/or snow.
•
The vehicle is traveling on winding roads.
•
The vehicle is on a long straight road.
•
The vehicle is approaching a tall building or a large
vehicle.
•
The surface streets run parallel to a freeway.
•
The vehicle has just been transferred by a vehicle
carrier or a ferry.
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