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Nissan Leaf. Manual - part 123

NORMAL OPERATING CONDITION

AV-483

< SYMPTOM DIAGNOSIS >

[NAVIGATION WITH BOSE]

Vehicle's travel amount is calculated by reading its travel distance and turning angle. Therefore, if the vehicle

is driven in the following manner, an error will occur in the vehicle's current location display. If correct location

has not been restored after driving the vehicle for a while, perform location correction.

SEL698V

AV-484

< SYMPTOM DIAGNOSIS >

[NAVIGATION WITH BOSE]

NORMAL OPERATING CONDITION

Cause (condition) –: While driving ooo: Display

Driving condition

Remarks (correction, etc.)

Road config-
uration

Y–intersections

At a Y intersection or similar gradual divi-
sion of roads, an error in the direction of
travel deduced by the sensor may result in
the current-location mark appearing on the
wrong road.

If after travelling about 10 km (6
miles) the correct location has
not been restored, perform lo-
cation correction and, if neces-
sary, direction correction.

Spiral roads

When driving on a large, continuous spiral
road (such as loop bridge), turning angle
error is accumulated and the vehicle mark
may deviate from the correct location.

Straight roads

When driving on a long, straight road and
slow curve without stopping, map-matching
does not work effectively enough and dis-
tance errors may accumulate. As a result,
the vehicle mark may deviate from the cor-
rect location when the vehicle is turned at a
corner.

Zigzag roads

When driving on a zigzag road, the map
may be matched to other roads in the simi-
lar direction nearby at every turn, and the
vehicle mark may deviate from the correct
location.

Roads laid out in a grid pattern

When driving where roads are laid out in a
grid pattern, or where many roads are run-
ning in the similar direction nearby, the map
may be matched to them by mistake and
the vehicle mark may deviate from the cor-
rect location.

Parallel roads

When two roads are running in parallel
(such as highway and sideway), the map
may be matched to the other road by mis-
take and the vehicle mark may deviate from
the correct location.

ELK0192D

ELK0193D

ELK0194D

ELK0195D

ELK0196D

ELK0197D

NORMAL OPERATING CONDITION

AV-485

< SYMPTOM DIAGNOSIS >

[NAVIGATION WITH BOSE]

Place

In a parking lot

When driving in a parking lot, or other loca-
tion where there are no roads on the map,
matching may place the vehicle mark on a
nearby road. When the vehicle returns to
the road, the vehicle mark may have devi-
ated from the correct location.
When driving in circle or turning the steer-
ing wheel repeatedly, direction errors accu-
mulate, and the vehicle mark may deviate
from the correct location.

If after travelling about 10 km (6
miles) the correct location has
not been restored, perform lo-
cation correction and, if neces-
sary, direction correction.

Turntable

When the power switch is OFF, the naviga-
tion system cannot get the signal from the
gyroscope (angular speed sensor). There-
fore, the displayed direction may be wrong
and the correct road may not be easily re-
turned to after rotating the vehicle on a turn-
table with the power OFF.

Slippery roads

On snow, wet roads, gravel, or other roads
where tires may slip easily, accumulated
mileage errors may cause the vehicle mark
to deviate from the correct road.

Slopes

When parking in sloped garages, when
travelling on banked roads, or in other cas-
es where the vehicle turns when tilted, an
error in the turning angle will occur, and the
vehicle mark may deviate from the road.

Map data

Road not displayed on the map screen

When driving on new roads or other roads
not displayed on the map screen, map
matching does not function correctly and
matches the location to a nearby road.
When the vehicle returns to a road which is
on the map, the vehicle mark may deviate
from the correct road.

Different road pattern
(Changed due to repair)

If the road pattern stored in the map data
and the actual road pattern are different,
map matching does not function correctly
and matches the location to a nearby road.
The vehicle mark may deviate from the cor-
rect road.

Vehicle

Use of tire chains

When tire chains are used, the mileage is
not correctly detected, and the vehicle mark
may deviate from the correct road.

Drive the vehicle for a while. If
the distance still deviates, ad-
just it by using the distance ad-
justment function. (If the tire
chain is removed, recover the
original value.)

Cause (condition) –: While driving ooo: Display

Driving condition

Remarks (correction, etc.)

SEL709V

SEL710V

SEL699V

ELK0201D

AV-486

< SYMPTOM DIAGNOSIS >

[NAVIGATION WITH BOSE]

NORMAL OPERATING CONDITION

Location Correction by Map-Matching is Slow

• The map-matching function needs to refer to the data of the surrounding area. It is necessary to drive some

distance for the function to work.

• Because map-matching operates on this principle, when there are many roads running in similar directions

in the surrounding area, no matching determination may be made. The location may not be corrected until

some special feature is found.

Name of Road is Not Displayed

The current road name may not be displayed if there are no road names displayed on the map screen.

Contents of Display Differ for Birdview™ and the (Flat) Map Screen

Difference of the BIRDVIEW™ screen from the flat map screen are as follows.

• The current place name displays names which are primarily in the direction of vehicle travel.

• The amount of time before the vehicle travel or turn angle is updated on the screen is longer than for the

(flat) map display.

• The conditions for display of place names, roads, and other data are different for nearby areas and for more

distant areas.

• Some thinning of the character data is done to prevent the display becoming too complex. In some cases

and in some locations, the display contents may differ.

• The same place name, street name, etc. may be displayed multiple times.

Vehicle Mark Shows a Position Which is Completely Wrong

In the following cases, the vehicle mark may appear on completely different position in the map depending on

the GPS satellite signal receiving conditions. In this case, perform location correction and direction correction.

• When location correction has not been done

- If the receiving conditions of the GPS satellite signal is poor, if the vehicle mark becomes out of place, it may

move to a completely different location and not come back if location correction is not done. The position will

be corrected if the GPS signal can be received.

• When the vehicle has traveled by ferry, or when the vehicle has been being towed

Precautions
for driving

Just after the engine is started

If the vehicle is driven just after the engine
is started when the gyroscope (angular
speed sensor) correction is not completed,
the vehicle can lose its direction and may
have deviated from the correct location.

Wait for a short while before
driving after starting the engine.

Continuous driving without stopping

When driving long distances without stop-
ping, direction errors may accumulate, and
the current-location mark may deviate from
the correct road.

Stop and adjust the orientation.

Abusive driving

Spinning the wheels or engaging in other
kinds of abusive driving may result in the
system being unable perform correct detec-
tion, and may cause the vehicle mark to de-
viate from the correct road.

If after travelling about 10 km (6
miles) the correct location has
not been restored, perform lo-
cation correction and, if neces-
sary, direction correction.

How to cor-
rect location

Position correction accuracy

If the accuracy of location settings is poor,
accuracy may be reduced when the correct
road cannot be found, particularly in places
where there are many roads.

Enter in the road displayed on
the screen with an accuracy of
approx. 1mm.
Caution: Whenever possible,
use detailed map for the correc-
tion.

Direction when location is corrected

If the accuracy of location settings during
correction is poor, accuracy may be re-
duced afterwards.

Perform direction correction.

Cause (condition) –: While driving ooo: Display

Driving condition

Remarks (correction, etc.)

SEL701V

SEL702V

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