Volvo VOLVO NAVIGATION SYSTEM (VNS), Quick Manual

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06 Questions & Answers
Frequently asked questions
06
76
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 meters).
Accuracy may be even less when driving on
roads lying parallel to another road, winding
roads, roads on several levels, and also after
driving a long distance without making any
distinct turns.
Tall buildings and mountains, tunnels, via-
ducts, over/underpasses etc., also have a
negative affect on the reception of GPS sig-
nals, which means that the estimation of the
car’s position may not be precise.
VNS does not always calculate the
fastest/shortest route.
Parameters such as 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, how-
ever, 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 and freeways, they will be avoided 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 vehicle’s position on the map is
incorrect after its 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.
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 to
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.
The maps and data on the DVDs are static.
They will not automatically update to reflect
real-life changes to road and traffic patterns.
Updated DVDs are produced periodically.
Please contact your Volvo retailer for more
information about availability.
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 car symbol on screen jumps
forward or spins.
The system may need a few seconds to
sense the position and movement of the car
before you drive off.