Volvo XC90 VNS, User Manual

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06 Questions & answers
Frequently asked questions
06
72
The vehicle’s position on the map is
incorrect
The Global Positioning System (GPS) indi-
cates the car’s position with an accuracy of
about 65 feet (20 meter). Accuracy may be
even less when driving on roads lying parallel
to another road, winding roads, roads on sev-
eral levels and also after driving a long dis-
tance without making any distinct turns. Tall
buildings and mountains, tunnels, viaducts,
over/underpasses etc also have a negative
affect on the reception of GPS signals, which
means that the estimation of the car’s posi-
tion may not be precise.
VNS does not always calculate the
fastest/shortest route.
When calculating a route, distance, width of
road, type of road, number of right or left
turns, traffic circles etc., are all taken into
account when calculating the best theoretical
route. Experience and local knowledge may,
however, lead to a better choice of route.
The VNS system chooses toll roads,
freeways, and ferries even though I
have opted to avoid them.
When calculating routes over longer dis-
tances, for technical reasons the system can
only use major roads. If you select
NO
for toll
roads, freeways, and ferries, they will be avoi-
ded as much as possible, but will be used if
no other reasonable alternative is available.
After being transported, the car’s
position on the map is incorrect.
If the car is transported, for example by ferry
or train, or in such a way as to impede the
reception of GPS signals, it can take up to
5 minutes to calculate the car’s new position
correctly.
The car’s position on the map is
incorrect after the car battery has been
disconnected.
If power has been cut from the GPS antenna,
it can take more than 5 minutes for the GPS
signals to be received correctly and the car’s
position to be calculated.
It may be necessary to drive ten to fifteen
miles, and make a number of turns before for
the system will function optimally.
The car symbol on the map moves
erratically after a tire change
In addition to the GPS receiver, the vehicle’s
speedometer and an onboard gyro are also
used to calculate the vehicle’s current loca-
tion and direction of travel. If the spare tire is
put on the vehicle, or is a change is made
from summer to winter tires (or vice versa),
the navigation system must "learn" the new
dimensions of the tire(s). Therefore, it may be
necessary to drive for several miles, including
a number of turns, for the system to make
this adjustment.
The map image does not correspond
with actual conditions.
Factors such as the constant expansion and
rebuilding of the road network, new traffic
regulations constantly being introduced etc.,
mean that the digital map database is not
always complete. Maps information is period-
ically developed and updated. Additional
information is available from your Volvo
retailer.
The map scale sometimes changes
There is no detailed map information for cer-
tain areas. If this is the case, the system auto-
matically changes the map scale.
Certain menu options are not available
Check the settings that you have made.
Select
Reset to default
for the particular
option to return to the default settings.
The system indicates the route on
which I am already driving when I have
selected Start guidance or Detour
The system cannot find a better alternative to
the current route.