| TUCSON(LM) >2010 > G 2.4 DOHC > Body Electrical System > AVN System>Description and Operation |

Limitations Of The Navigation system
GPS Signal Reception State As the GPS satellite frequency is received/transmitted in straight lines, reception may not work if hiding devices are placed on or near the GPS antenna or when traveling through the following locations.
• | Tunnels
• | Basement parking structures
• | Underneath an overpass
• | Roads within forested areas
• | Areas near high rise buildings
• | Roads within canyons
Vehicle Position Display
1. | If multipass errors occur due to reflections from buildings or related causes, the current position mark on the navigation may differ from the actual position of the vehicle.
2. | The position of the vehicle on the navigation may be different from the actual position if the vehicle is under the occur, driving for a short period of time will vehicle through map matching or GPS information (several minutes may be necessary in certain cases).
A. | When driving on a Y-shaped road with a narrow angle, the current position may be displayed in the opposite direction.
B. | If the vehicle is loaded onto a car transport vehicle, the current position mark may be stalled on the last position prior to loading.
C. | When driving on a spiral-shaped road.
D. | When driving in mountain regions with sharp turns or sudden brakes.
E. | When entering a road after having been in an underground parking structure, building parking structure, or turnable with many rotations.
F. | When the tires have recently been replaced (Especially upon use of spare or studless tires)
G. | If the battery terminal is removed.
H. | When driving in city streets, the current position may be displayed on the opposite side or on an off-road position.
I. | When changing the zoom level from the maximum zoom in level to a different zoom level, the current position mark may be displayed on a different road.
J. | When driving in heavy traffic with frequent go · stops in traffic or intersections.
K. | When driving under slippery conditions, such as heavy sand, snow, etc.
L. | When driving with the tire chain in place.
M. | When using a tire with an incorrect size specification.
N. | When the tire pressure for the 4 tires are different.
O. | When the replacement tire is a worn or used tire (Especially studless tires having passed a 2nd seasons, etc.)
P. | When driving near high-rise buildings
Q. | If a roof carrier has been installed
R. | When driving under high speeds or having calculated a long-distance route.
Route Guidance Suitable route guidance may not occur caused by search conditions or the driving position.
• | Guidance to go straight may be given while driving on a straight road.
• | Guidance may not be given even when having turned at an intersection.
• | There are certain intersections in which guidance may not occur.
• | A route guidance signaling entrance into a no enter zone may occur (No enter zone, road under construction, etc.)
• | Guidance may be given to a position removed from the actual destination if roads to reach the actual destination do not exist or are too narrow.
• | Faulty voice guidance may be given if the vehicle breaks from the designated route (ex : if a turn is made at an intersection while the navigation provided guidance to go straight).
• | Map Data may be missing or incorrect causing route guidance to not be given.
Route Re-calculation The following phenomena may occur after conducting route recalculation.
• | Guidance may be given to a position differing from the current position when turning at an intersection.
• | Route recalculation may take a longer period of time when driving under high speeds.
• | A route guidance signaling for a U-Turn in a No U-Turn location may occur.
• | A route guidance signaling entrance into a no enter zone may occur (No enter zone, road under construction, etc).
• | Guidance may be given to a position removed from the actual destination do not exist or are too narrow.
• | Faulty voice guidance may be given if the vehicle breaks from the designated route (ex : if a turn is made at an intersection while the navigation provided guidance to go straight)