14 Navigation
Before Use
■Points to note before use
Starting the engine before using the system
The navigation system can be used with the ignition key in either the
ON position or the ACC position. To preserve the battery, however, it
should be used with the engine running whenever possible. Using
the system for a long time with the engine off can cause the battery
to run down.
Delay before display of current position
The system will not immediately display a correct indication of your
vehicle's current positio n after being switched on for the first time or
after the battery has been disconnected for a long time. It will display
a correct current position indication as soon as it receives Global Posi-
tioning System (GPS) signals.
Program reloading after battery disconnection
The navigation program will be erased from the system's memory if
the battery is disconnected. If th is happens, load the provided DVD-
ROM disc in the system's main unit and turn the ignition switch to
the ON or ACC position. The system will automatically reload the pro-
gram and start operating normally again.
Incorrect operation on rough roads
The system may operate incorrectly or be unable to read the data on
the DVD-ROM disc when subjected to severe vibration caused by
driving on rough roads.
Handling the GPS antenna
Do not paint the antenna. Doing so could impair or prevent signal
reception. Disabled switches
Some switches are disabled during operation of the system. These
switches are displayed in fainter colors and no messages are dis-
played for them.
Risk of damage to the main unit
Be mindful of the occupant compartment temperature. Using the
system when the occupant compar tment temperature is extremely
high or low can damage it or cause it to malfunction. Also, note that
the system's main unit can be da maged by strong vibration and by
any metallic object or water that gets inside.
Condensation
Condensation can form on the lens inside the main unit when there
is a rapid change in occupant co mpartment temperature (for exam-
ple, when the heater is switched on in cold weather). Such condensa-
tion can cause the system to operate abnormally. If you wait an hour
or so for the condensation to di sappear, the system should start
working normally again. If normal op eration is still not restored after
several hours, we recommend that you contact the nearest SUBARU
dealer.
Replacing the DVD-ROM disc
If you need to replace the DVD-ROM disc, make sure the replacement
disc is compatible with your system's main unit. Inserting an incom-
patible disc could damage the unit.
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90 Navigation
General Information
■Accuracy of vehicle position
Area in which GPS signals cannot be received
Because the radiowave signals from the GPS satellites travel primarily
by line of sight, the navigation system might not be able to receive
the signals in the areas described below.(If the GPS mark does not
appear on the map screen, it mean s that the GPS radiowave signals
are not being properly received.)
(1) Inside a tunnel
(2) Inside a building
(3) Under a three-dimensional road system such as for high speed roads
(4) On boulevards lined with trees
(5) Between buildings
(6) Under a cliff or in a cave • If the GPS antenna or its surroundings are blocked by an obstacle
(including cargo), it might not be possible for the system to
receive the GPS radiowave signals.
• If multiple paths are created due to the reflection from buildings,
a large measurement error could occur, causing the vehicle's
mark to deviate from its actual position.
Deviation of the vehicle's position mark
The vehicle's position mark could deviate from its actual position
when the vehicle is being driven under the conditions listed below or
due to conditions of the GPS satellites.
If the vehicle travels on a road whose actual shape differs from that in
the map data, the vehicle's mark co uld deviate from the actual posi- tion. The correct position will even
tually appear on the screen
through the correction function. If the screen does not show the cor-
rect position for an excessively long time, correct the current position
or make an automatic correction.
(1) The vehicle's mark could appear on a parallel road.
(2) When the road splits into a narrow Y, the vehicle's mark could appear on the other fork of the Y.
(3) When the vehicle makes a right or left turn, the vehicle's mark could appear on one street ahead or behind.
(4) If the vehicle is transported by means other than the vehicle's own power, such as on a ferryboat, the vehicle's mark will
remain in the position it was before the transport until the sys-
tem can calculate the position through the GPS.
(5) When the vehicle is driven on a steep incline, the vehicle's mark could deviate from its actual position.
(6) If there are continuous gradual curves in the same direction, the vehicle's mark could deviate from its actual position.
(7) If the vehicle is driven in a zigzag pattern, such as through fre- quent lane changes, the vehicle' s mark could deviate from its
actual position.
(8) If the vehicle is placed on a tu rntable, such as in a parking area,
and turned with the ignition OFF, the vehicle's mark could devi-
ate from its actual orientation. The vehicle's mark could also
deviate even after the vehicle has exited the parking area.
(9) The vehicle's mark could deviate from its actual position if the
vehicle is driven using tire chains or snow tires on a snow-cov-
ered road or on a mountainous road.
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