Lexus is300 2021, Service Manual

Page: 191 / 436

191
4-5. Using the driving support systems
4
Driving
2
Press or of the meter control
switches and select , then press
.
3 Press or of the meter control
switches and select “RSA”, then press
.
■ Automatic turn-off of RSA sign display
In the following situations, a displayed
speed limit sign and/or do not enter sign will
stop being displayed automatically:
● No sign has been recognized for a cer-
tain distance.
● The road changes due to a left or right
turn, etc.
In the following situations, stop and yield
signs will stop being displayed automati-
cally:
● The system determines that your vehicle
has passed the sign.
● The road changes due to a left or right
turn, etc.
■
Conditions in which the function may
not operate or detect correctly
In the following situations, RSA does not
operate normally and may not recognize
signs, display the incorrect sign, etc. How-
ever, this does not indicate a malfunction.
●
The front camera is misaligned due to a
strong impact being applied to the sen-
sor, etc.
●
Dirt, snow, stickers, etc. are on the wind-
shield near the front camera.
●
In inclement weather such as heavy rain,
fog, snow or sand storms.
●
Light from an oncoming vehicle, the sun,
etc. enters the front camera.
●
The sign is dirty, faded, tilted or bent.
●
The contrast of electronic sign is low.
●
All or part of the sign is hidden by the
leaves of a tree, a pole, etc.
●
The sign is only visible to the front camera
for a short amount of time.
●
The driving scene (turning, lane change,
etc.) is judged incorrectly.
● If a sign not appropriate for the currently
traveled lane, but the sign exists directly
after a freeway branches, or in an adja-
cent lane just before merging.
● Stickers are attached to the rear of the
preceding vehicle.
● A sign resembling a system compatible
sign is recognized.
● Side road speed signs may be detected
and displayed (if positioned in sight of the
front camera) while the vehicle is travel-
ing on the main road.
● Roundabout exit road speed signs may
be detected and displayed (if positioned
in sight of the front camera) while travel-
ing on a roundabout.
● The front of the vehicle is raised or low-
ered due to the carried load.
● The surrounding brightness is not suffi-
cient or changes suddenly.
● When a sign intended for trucks, etc. is
recognized.
● The navigation system map data is out-
dated.
● The navigation system is not operating.
● The speed information displayed on the
meter and on the navigation system may
be different due to the navigation system
using map data.
■
Speed limit sign display
If the engine switch was last turned off while
a speed limit sign was displayed on the
multi-information display, the same sign dis-
plays again when the engine switch is
turned to IGNITION ON mode.
■ Customization
Some functions can be customized. (Cus-
tomizable features:

P.394)