ECU TOYOTA PRIUS 2003 1.G Navigation Manual

49
1UE085
1UE086
You can change the orientation of the
map from Northup to Headingup by
touching the direction symbol at the top
left of the screen.Northup symbol
Regardless of the direction of vehicle travel,
North is always up.
Headingup symbol
The direction of the vehicle travel is always
up. A red arrow indicates North. This navigation system calculates the
current vehicle position using satellite
signals, various vehicle signals, map
data, etc. However,
the accurate position
may not be shown depending on the sat-
ellite condition, road configuration, ve-
hicle condition or other circumstances.
The Global Positioning System (GPS) devel-
oped and operated by the U.S. Department
of Defense provides an accurate current ve-
hicle position using 3 to 4 satellites. The GPS
system has a certain level of inaccuracy built
in for security reasons. While the navigation
system will compensate for this most of the
time, occasional positioning errors up to 300
feet can and should be expected. Generally,
position errors will be corrected within a few
seconds.
Orientation of the map
Limitations of the navigation
s
ystem

78
Position/Direction calibration
2UE028
1. Touch the scroll arrows to move the
cursor to your desired location.
Touch the
“OK” switch.
2UE029
2. Touch either the left or right arrow to correct the direction of the current ve-
hicle position mark.
Touch the
“OK” switch on the screen and
the Map screen returns.
 Tire change calibration
The tire change calibration function is to
be used when the tires are replaced. This
will adjust for any possible change in tire
circumference from the old tires to the
new ones. If this procedure is not per-
formed when tires are replaced, the cur-
rent vehicle position mark may become
incorrect.
To execute the fast distance tire calibration
procedure, touch the
“Tire change”
switch on the Calibration screen.
2UE030
The above message appears and the fast
distance calibration is automatically started.
A few seconds later, the Map screen returns.