roof TOYOTA tC 2016 Accessories, Audio & Navigation (in English)

7. NAVIGATION SYSTEM INFORMATION
1. LIMITATIONS OF THE NAVIGATION SYSTEM
7. NAVIGATION SYSTEM INFORMATION



This navigation system calculates the
c u rrent vehicle position using satellite
s ignals, various vehicle signals, map
data, etc. However, an accurate
positi on may not be shown depending
on sa tellite condition, road
configuration, ve hicle condition or
other c irc umstances.
The Globa l Pos iti o n in g System (GPS)
d eve lope d and operated by th e U.S.
Dep art m ent of D efe nse provides an
a ccurate c urre nt vehic le pos it io n, normal ly
using 4 or more sa te llites, a nd in some
case 3 sat ellites. The GPS system h a s a
certa in le ve l o f inaccuracy. W hile the
navi gation system will compe nsa te for this
m ost of th e time, occasio nal positio ning
errors of up to
1 00 m (3 00 feet) can and sh ould be
ex pected. Gene rally, p osit ion errors w ill
b e c orre cted w ith in a few second s.

The GPS signa l may be physic ally
o bstructed, l ead ing to in acc u ra te veh icle
p ositi o n on t he map display. Tunne ls,
ta ll bu ildin gs, trucks, or eve n th e
p laceme nt of obje cts on the in str um ent
pan el may obstruct the GPS signals.
T he GPS satel lites may not send sign als
d ue to r epa irs or im pro ve m en ts being
m ade to the m.
Even when the navigation system is
re ce iving clear GPS s ignal s, the v ehicle
p osition m ay not be shown accurately or
i na pprop riate ro ute g u id an ce m ay occ ur in
so me ca se s.

NOTICE

T he in sta lla tio n of windo w tint in g may
obs truc t th e GP S sig nal s. Mos t w indow
t in tin g co ntain s som e me tallic con tent t hat
w ill in terf ere wi th GP S s ign al re cept io n o f
t h e an tenn a. W e a dvi se aga inst t he us e o f
win dow ti ntin g on veh ic les eq uip ped w ith
n av iga tio n s yst ems.

 Accurate current v e hi cle po sit io n m ay n ot
b e s h ow n in th e fo llo w in g c a ses:
• When d riv in g o n a sm all a ng le d Y -
shap ed r o ad.
• When dr iv in g o n a w indi ng roa d.
• When drivi ng on a s lipper y ro ad su ch as
i n sa nd, grav el, sno w, e tc.
• When dr iv in g o n a lo ng s tra ight r o ad.
• When highw ay a nd s u rfac e s treet s run
i n p ar all el.
• A ft e r moving by ferry o r veh icle carri er.
• When a lon g ro ute is searc hed dur ing
hi gh s peed dr iv ing .

• When drivi ng w ith out s e ttin g th e c u rre nt
pos it io n ca librat io n c o rre ctly .
• A ft e r re peati ng a chan ge o f d irec tio n by
go in g fo rwar d a nd backward , o r turni ng
o n a turnt able in t h e p a rk in g lo t.
• When le avi ng a c o vere d p ark in g lo t or
p ark in g garag e.
• When a roof carrie r is ins ta lle d.
• When dr iv in g w ith tir e ch ain s ins tal led.
• When t h e t ire s ar e wor n.
• A ft e r repl acin g a tir e o r t ires .
• When u sin g tire s th at ar e sma ller or
large r t han t h e f a ct ory s p ec if ica tio ns.
• When t h e t ir e pr essur e i n a ny o f t h e f our
ti re s is not c o rre ct.
1. LIMITATIONS OF THE NAVIGATION SYSTEM

156