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98Navigation System
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 Gl obal Positioning System (GPS) signals 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 se veral 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.
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 requir e an unobstructed view of the 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 under the dashboard)
• Cell phones, PDAs, or other electronic devices docked in a cradle or lying loose on the dashboard
• Radar detectors mounted 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 rout e. Try changing the method of routing. See Changing the Routing Method on page 46. You may also have Unverified Area Routing set to OFF. See Unverified Area Routing on page 83.
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 addition al caution when driving in these unverified areas.
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Operation in Alaska and
Hawaii
Certain functions that rely on a satellite signal will not work in Alaska and Hawaii. These functions include but are not limited to XM radio, automatic clock updates, and time zone adjustments.
Alaska
If the vehicle was purchased in the lower 48 states and driven to Alaska, the system cannot display maps. The message “Vehicle is out of the database...” will be displayed.
Hawaii
This section describes the differences in navigation system operation for vehicles delivered in Hawaii.
Map Coverage
All roads displayed on the Hawaii map screens are detailed coverage roads. Text related to “unverified” roads or areas are not applicable. The following topics do not apply in Hawaii:
• Unverified road descriptions (see page 6 and 83).
• Cautions and pop-up windows related to unverified roads (see page 62).
• Setup entries that re late to turning on or off unverified routing (see page 84).
• When zooming in and out, there is no 350-mile scale for Hawaii.
Other Map Issues
• See the coverage section for a list of islands with coverage (see page 107).
• Freeway Exit information does not exist in Hawaii, so the “Freeway Exit Info” icon is not shown on the icon bar.
Address and POI Entry Screens
When in Hawaii, the following differences occur for map, address, and POI selection:
• It is not possible to enter U.S. mainland addresses or scroll the map east to the U.S. mainland.
• Selection of the “State” is confined to the state of Hawaii only.
• Entry of a destination address or POI on an island other than your current island may result in a screen caution message. This is normal because there are no “ferry” routes between islands available in the database.
• If the “Guidance Prompts” setting on the Setup screen is set to normal or maximum, street names will not be spoken in voice guidance commands.
Coverage Areas
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136Navigation System
Glossary
Map Matching - The received GPS information allows the navigation system to position the vehicle on the map. Map matching has occurred if the map screen is displaying the current street name in the bottom-shaded area.
Mic - Abbreviation for the microphone used for receiving voice commands. It is located near the map light in the ceiling.
MP3 - A music file format that can be played from a CD-R or PC card.
MW - Maneuver Window. While en route to a destination, this window displays informatio n about the next maneuver.
Navi - Abbreviation for the navigation system.
North Pointer - The map symbol showing the map orientation. See page 55.
Off Route - This occurs when the user leaves mapped roads. Off-road tracking dots (“breadcrumbs”) are displayed if the option is enabled in the Setup screen. The user can use them to return to a mapped road. The bottom of the navigation screen will say, “Not on a digitized road.”
Outlying Areas - These are rural areas that typically have only their main roads mapped. All other roads are shown in light brown for reference only, since they have not been verified.
PC Card - An adaptor card (sometimes called a PCMCIA card) that can contain a compact flash, or SD media clip with MP3 or WMA music files.
PIN - Personal Identification Number. A 4-digit number created by the customer to protect personal information.
POI - Point of Interest. These are the businesses, schools, etc. found under the Places option on the Enter destination by screen. See page 31.
Polygon - Colored areas on the map screen denoting parks, schools, etc. See Map Screen Legend “Map Features” for a list of the assigned colors. See page 50.
QWERTY - Keyboard layout resembling the typewriter keys. The keyboard layout can be changed to an alphabetical layout in the Setup, Basic Settings screen.
Reminder - Automatic “pop-up” Calendar message. See Calendar on page 70.
Secure Digital (SD) Media - These can be installed into a PCMCIA adaptor to play MP3 or WMA music files.
Security Code - Code needed to activate the navigation system or audio unit. See Entering the Security Code on page 96.
Touch Sensor - The touch sensor on the front of the LCD consists of a touch sensitive resistive membrane with an infinite number of possible touch locations. The sensing locations are confined to a grid of 20 vertical and 10 horizontal touch locations.
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Glossary
Unverified Streets - These streets have not been verified for turn restrictions, one-way, etc. They are shown in light brown on the map. Unverified streets may be missing from the map, shown in the wrong location, or have an incorrect name or address range.
Vehicle Speed Sensor - Provides speed signal to the navigation system for moving the VP icon on the map.
Verified Streets - These streets consist of the detailed metropolitan coverage areas and all other inter-town connection roads. These roads are shown in black on the map.
Voice Control - See VR.
VP - Vehicle Position. When in map mode, this circular icon shows the vehicle position on the map. Touch this icon to show the latitude, longitude, and elevation of your current position.
VR - Voice Recognition. This allows voice control of many of the navigation functions. The hardware consists of the microphone, voice control switch ( NAVI TALK/NAVI BACK buttons), and the front speakers.
Waypoint - A temporary destination you may enter while en route (e.g., a gas station, ATM, etc.). See page 63.
WMA - A windows media audio file that can be played from a CD-R or PC card.
Yaw Rate Sensor - Senses when the vehicle makes a turn, which makes the VP change direction on the map as you turn.