2011 Toyota Sienna Navigation Manual - Page 202

09 10.16 SIENNA_Entry_Navi_U OM45459U Please be aware that all current vehicle navigation systems have certain limitations that may affect their ability to perform properly. The accuracy of the vehicle's position depends on the satellite condition, road configuration, vehicle condition or other circumstances. For more information on the limitations of the system, refer to pages 182 through 183. 2