2005 Toyota Corolla Navigation Manual - Page 52

Corolla_MATRIX_Navi_U (L/O 0405) Limitations of the navigation system This navigation system calculates the current vehicle position using satellite signals, various vehicle signals, map data, etc. However, an 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 using 3 to 4 satellites. The GPS system has a certain level of inaccuracy built in for security reasons. While the navigation system will compensate for this most of the time, occasional positioning errors up to 300 feet can and should be expected. Generally, position errors will be corrected within a few seconds. 1NAN094 1NAN095 4. Select the "Map orient." switch of the "Edit right screen", and then the "North- up"/"Heading- up" of the right screen is switched. When 2 map screens are displayed, you can set one as the "North- up" and the other one as the "Heading- up." When your vehicle is not receiving signals from the satellites, the "GPS" mark does not appear at 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 installation of window tinting may also obstruct the GPS signals. Most window tinting contains some metallic content that will interfere with the GPS signal reception. We recommend not to use the window tinting on vehicles equipped with navigation systems. 45 2005 MATRIX Navigation from May. '04 Prod. (OM12820U)