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GPS signal reception conditions are good. However, the position mark does not return to its proper
position.
I he system senses the vehicle location with an error of approximately 100 m (328 ft). Due to the limitation
of precision, the position marker may be inaccurate even if the GPS signal reception condition is good.
I The navigation system uses GPS data to determine vehicle location. GPS data is compared with other
locational sensing data during the map matching process. The system decides which data is more pre-
cise and uses that data.
I When the vehicle is stationary, GPS data cannot be used to make system corrections.
Area designations on the map display and the BIRDVIEWT display differ.
To prevent the display from becoming congested, alphanumeric information is abridged.
[No problem]
Correct position of your vehicle is not displayed.
Vehicle position changed after ignition key was turned to the OFF position (Vehicle is transported on car ferry,
car train, or by some other means).
[Operate vehicle for short time under GPS receiving conditions.]
The display does not change to night-time mode even though the light switch has been turned ON.
Lights have been turned on. In “DISPLAY CHANGE” mode, night-time mode on display has been switched to
day-time mode and still is.
[Turn lights on again. Set the display to night-time mode. Refer to EL-432.]
Map does not scroll even though the position of your vehicle is changed.
Present area does not appear on the display.
[Press the “MAP” switch.]
Vehicle position marker does not appear.
Present area does not appear on the display.
[Press the “MAP” switch.]
The map surface precision display (GPS satellite marker) still remains gray.
Vehicle is parked inside a building or in the shadow of a large building. This intercepts the GPS signal.
[Move the vehicle to a more open position.]
GPS signal is not received because objects are placed on the rear parcel shelf.
[Remove objects from the rear parcel shelf.]
GPS satellite position is bad.
[Wait until GPS satellite position improves.]
Vehicle position precision is bad.
The map surface precision display (GPS satellite marker) still remains gray.
[Refer to “The map surface precision display (GPS satellite marker) still remains gray” item (Symptoms)]
Vehicle speed and elapsed distance is calculated from the vehicle speed pulse. This pulse is dependent upon
tire size. If tire chains are used on the vehicle, accuracy will be affected (pulse rate will be too fast or too slow).
The same is true if the system installed to your vehicle is removed and installed on another vehicle.
[Drive the vehicle at a speed higher than 30 km/h (19 MPH) for approximately 30 minutes. Automatic read-
justment should occur. If it does not (remains too fast or too slow), distance calibration is required. Or, drive
the vehicle for a short distance. Perform “SPEED CALIBRATION” (EL-429). After removing the tire chains,
sensing accuracy may recover by itself.]
Bad map data or system defect (same error consistently occurs in the same area)
ROUTE SEARCH/ROUTE GUIDE
NAEL0428S03
I If the present location or the destination location is displayed in the avoid area, it is not possible to search
routes.
I If the avoid area is set to wide range area, it may not be possible to find appropriate routes or search for
alternate routes.
I The automatic re-route calculates a return to the original route. Because of this, it may not be possible to
search appropriate new routes. If you deviate from the original route and wish to select an appropriate new
route, touch “Route Calculation”.
I The automatic re-route function may sometimes require considerable time.
I Displayed route number and directional information at a highway junction may differ from the information
posted on the actual road signs.
I Displayed street name information at a highway exit may differ from the information posted on the actual
road signs.
I Street name information displayed on the enlarged intersection map may differ from the information posted
on the actual road signs.
NAVIGATION SYSTEM
This Condition is Not Abnormal (Cont’d)
EL-450
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