BMW 745 2002, Owner'S Manual

Page: 125 / 208

Navigation
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Navigation
Safety
By allowing you to find your destination
without having to consult conventional
road maps as you drive, the navigation
system makes an important contribution to
traffic safety.
Enter data only when the vehicle is
stationary, and always obey all traffic
regulations and road signs in the event of
any contradiction between traffic or road
conditions and the instructions issued by
the navigation system. If you do not
observe this precaution, you may be in
violation of the law, and can endanger
vehicle occupants and other highway
users.
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GPS
GPS stands for Global Positioning System.
This integral component within your
vehicle's navigation system relies on refer-
ence satellites to determine the precise
location of your vehicle. The system oper-
ates by measuring the distance between
your vehicle and a minimum of three refer-
ence satellites.
The data monitored by the vehicle's
antenna and the GPS receiver are fed into
the navigation system's computer. The
computer then correlates the satellite posi-
tioning data with information furnished by
various other in-car systems such as the
ABS sensors, the inertial sensors and the
CD containing the system's digital road
map to obtain a basis for its subsequent
calculations.
The result: the navigation system provides
you with dependable guidance to your
destination.
Map CD
Map CDs are inserted in the navigation
computer located behind the cover on the
left side of the luggage compartment.
To ensure that your vehicle's navigation
system has access to the latest highway
network information, always load the most
recent CD version of the digital road map.
As is the case with conventional road
maps, the map CDs are subject to periodic
updates to ensure that they reflect the
latest information and surveys.
Map CDs are available at your BMW
center; refer to the listing for the BMW
center closest to you.
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Changing the map CD
As you drive, the computer will alert you
when you are leaving the area stored on
your current map CD; you should respond
by changing the map CD in the navigation
computer.
Map CDs contain road maps covering one
or more countries or regions.
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