Lexus 2002 ES 300 Navigation system, Owner'S Manual

Page: 61 / 131

Limitations of the Navigation System
ES300_Navi_U (L/O 0208)
51
2003 ES300 Navigation from Aug. ’02 Prod. (OM33592U)
Even when the navigation system is receiv-
ing good GPS signals, the vehicle position
may not be shown accurately or inappropri-
ate route guidance may occur in some
cases. (a) Accurate current vehicle
position may not be shown in
the following cases:
When driving on a small angled Y–
shaped road.
When driving on a spiral road.
When driving on a slippery road such as
in sand, gravel, snow, etc.
When driving on a long straight road.
When freeway and surface streets run in
parallel.
After moving by ferry or vehicle carrier.
When a long route is searched during high
speed driving.
When driving without setting the current
position calibration correctly.
After repeating a change of directions by
going forward and backward, or turning
on a turntable in the parking lot.
When leaving a covered parking lot or
parking garage.
When a roof carrier is installed.
When driving with the tire chains installed.
When the tires are worn.
After replacing a tire or tires.
When using tires that are smaller or larger
than the factory specifications.
When the tire pressure in any of the four
tires is not correct.
INFORMATION
If your vehicle cannot receive GPS sig-
nals, you can correct the current posi-
tion manually. For the information on
setting the current position calibration,
see page 75.