Lexus is300 2021, Service Manual

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4-5. Using the driving support systems
● The PCS warning light will turn on and
“VSC Turned OFF Pre-Collision Brake
System Unavailable” will be displayed on
the multi-information display.
LTA (Lane Tracing Assist)
While driving on a road with clear
white (yellow) lane lines, the LTA
system warns the driver if the vehi-
cle may deviate from the current
lane or course
*
, and also can
slightly operate the steering wheel
to help avoid deviation from the
lane or course
*
. Also, while the
dynamic radar cruise control with
full-speed range (

P.192) is oper-
ating, this system will operate the
steering wheel to maintain the vehi-
cle’s lane position.
The LTA system recognizes white
(yellow) lane lines or a course
*
using the front camera. Addition-
ally, it detects preceding vehicles
using the front camera and radar.
*
: Boundary between asphalt and the
side of the road, such as grass, soil, or
a curb