2018 Lexus LC500 roof

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3-6. Tips for the navigation system
Navigation system
3-6.Tips for the navigation s ystem
The Global Positioning System (GPS)
developed and operated by the U.S.
Department of Defense provides an
accurate current vehicle position, nor-
mally using 4 or more satellites, and in
some case 3 satellites. The GPS sys-
tem has a certain level of inaccuracy.
While the navigation system will com-
pensate for this most of the time, occa-
sional positioning errors of up to 100 m
(100 yards) can and should be
expected. Generally, position errors
will be corrected within a few seconds.
The GPS signal may be physically
obstructed, leading to inaccurate vehi-
cle position on the map display. Tun-
nels, tall buildings, trucks, or even the
placement of objects on the instrument
panel may obstruct the GPS signals.
The GPS satellites may not send sig-
nals due to repairs or improvements
being made to them.
Even when the navigation system is
receiving clear GPS signals, the vehi-
cle position may not be shown accu-
rately or inappropriate route guidance
may occur in some cases.
 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 winding road.
• When driving on a slippery road such as
in sand, gravel, snow, etc.
• When driving on a long straight road.
• When motorway and surface streets run
in parallel.
• After moving by ferry or vehicle carrier.
• When a long route is searched during
high speed driving.
• After repeating a change of direction 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 tire chains installed.
• When the tires are worn.
• After replacing a tire or tires.
GPS (Global Positioning
System)
This navigation system calculates
the current vehicle position using
satellite signals, various vehicle sig-
nals, map data, etc. However, an
accurate position may not be shown
depending on satellite condition,
road configuration, vehicle condi-
tion or other circumstances.
Limitations of the navigation sys-
tem
NOTICE
●The installation of window tinting may
obstruct the GPS signals. Most win- dow tinting contains some metallic content that will interfere with GPS
signal reception of the antenna. We advise against the use of window tint-ing on vehicles equipped with naviga-
tion systems.

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5-2. Mobile Assistant operation
can be adjusted using the
“PWR·VOL” knob or steering wheel
volume control switches. The
Mobile Assistant and phone call vol-
umes are synchronized.
●If the user uses Siri play song feature and
the iPhone is not connected as an audio source, the song will start playing only on the iPhone.
●While a phone call is active, the Mobile Assistant cannot be used.
●If using the navigation feature of the cellu-lar phone, ensure the active audio source
is Bluetooth® audio or iPod in order to hear turn by turn direction prompts.
●Wait for the listening beeps before using the Mobile Assistant.
●The Mobile Assistant may not recognize commands in the following situations:
• Spoken too quickly. • Spoken at a low or high volume.• The roof or windows are open.
• Passengers are talking while the Mobile Assistant is being used.• The air conditioning speed is set high.
• The air conditioning vents are turned toward the microphone.

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6-1. Lexus parking assist monitor
The distance guide lines and the
vehicle width guide lines may not
actually be parallel with the dividing
lines of the parking space, even
when they appear to be so. Be sure
to check visually.
 The distances between the vehicle
width guide lines and the left and
right dividing lines of the parking
space may not be equal, even when
they appear to be so. Be sure to
check visually.
 The distance guide lines give a dis-
tance guide for flat road surfaces. In
any of the following situations, there
is a margin of error between the
guide lines on the screen and the
actual distance/course on the road.
■When the ground behind the vehi-
cle slopes up sharply
The distance guide lines will appear to
be closer to the vehicle than the actual
distance. Because of this, objects will
appear to be farther away than they
actually are. In the same way, there will
be a margin of error between the
guidelines and the actual dis-
tance/course on the road.
NOTICE
●The parking assist monitor may not operate properly in the following cases.
• If the back of the vehicle is hit, the posi- tion and mounting angle of the camera
may change.
• As the camera has a water proof con-
struction, do not detach, disassemble or modify it. This may cause incorrect operation.
• When cleaning the camera lens, flush the camera with a large quantity of
water and wipe it with a soft and wet cloth. Strongly rubbing the camera lens may cause the camera lens to be
scratched and unable to transmit a clear image.
• Do not allow organic solvent, car wax, window cleaner or glass coat to adhere to the camera. If this happens,
wipe it off as soon as possible.
• If the temperature changes rapidly,
such as when hot water is poured on the vehicle in cold weather, the system may not operate normally.
• When washing the vehicle, do not apply intensive bursts of water to the
camera or camera area. Doing so may result in the camera malfunctioning.
●Do not expose the camera to strong impact as this could cause a malfunc-
tion. If this happens, have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer as soon as pos- sible.
Differences between the screen
and the actual road

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7-1. Phone operation (Hands-free system for cellular phones)
Phone
ated. (P.168)
●The other party’s voice will be heard from
the front speakers. The audio/visual sys- tem will be muted during phone calls or when hands-free speech commands are
used.
●Talk alternately with the other party on
the phone. If both parties speak at the same time, the other party may not hear what has been said. (This is not a malfunc-
tion.)
●Keep call volume down. Otherwise, the
other party’s voice may be audible out- side the vehicle and voice echo may increase. When talking on the phone,
speak clearly towards the microphone.
●The other party may not hear you clearly when:• Driving on an unpaved road. (Making
excessive traffic noise.) • Driving at high speeds.• The roof or windows are open.
• The air conditioning vents are pointed towards the microphone.• The sound of the air conditioning fan is
loud. • There is a negative effect on sound qual-ity due to the phone and/or network
being used.
 The following data is stored for
every registered phone. When
another phone is connected, the fol-
lowing registered data cannot be
read:
•Contact data
• Call history data
• Favourites data
•Image data
• All phone settings
• Message settings
●When a phone’s registration is deleted, the above-mentioned data is also
deleted.
A lot of personal data is registered
when the hands-free system is used.
When selling or disposing of the vehi-
cle, initialize the data. ( P.59)
 The following data in the system can
be initialized:
•Contact data
•Call history data
• Favourites data
• Image data
• All phone settings
• Message settings
●Once initialized, the da ta and settings will
be erased. Pay much attention when ini- tializing the data.
About the contacts in the con-
tact list
When selling or disposing of the
vehicle