2003 Toyota Prius Navigation Manual - Page 58

(b) Inappropriate route guidance may occur in the following cases: D When using tires that are smaller or larger than the factory specifications. D When the tire pressure in any of the four tires is not correct. D When turning at a wrong intersection off the designated route guidance D If you set more than one destination, auto reroute will display a route returning to the destination on the previous route when you try to skip any of the destinations. D When turning at an intersection, there is no route guidance. D When passing through the intersection, there is no route guidance. D During automatic rerouting, the route guidance may not be available for the next turn to the right or left. D It may take a long time to operate auto reroute during high speed driving. In auto reroute, a detour route may be shown. D After auto reroute, the route may not be changed. D An unnecessary U-turn may be shown or announced. D A location may have multiple names and the system will announce one or more. D Some routes may not be searched. D If the route to your destination includes gravel, unpaved roads or alleys, the route guidance may not be shown. D Your destination point might be shown on the opposite side of the street. D When a portion of the route has regulations prohibiting the entry of the vehicle that vary by time or season or other reason. D The road and map data stored in your navigation system may not be complete or may not be the latest release. When replacing the tire(s), do the calibration. See page 77 for detailed information. INFORMATION If your vehicle cannot receive GPS signals, you can correct the current position manually. For the information on setting the current position calibration, see page 77. 51