Lexus LS 500h 2019, Owner'S Manual

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297
4
4-5. Using the driving support systems
Dr
ivin
g
*
: If equipped
When driving on highways and free-
ways with white (yellow) lane lines, this
function alerts the driver when the
vehicle might depart from its lane or
course
*
and provides assistance by
operating the steering wheel to keep
the vehicle in its lane or course
*
. Fur-
thermore, the system provides steering
assistance when dynamic radar cruise
control with full-speed range is operat-
ing to keep the vehicle in its lane.
The LTA system recognizes white (yel-
low) lane lines or a course
*
using the
front camera. Additionally, 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
LTA (Lane Tracing Assist)
*
Summary of function
WARNING
■
Before using LTA system
●
Do not rely solely upon the LTA sys-
tem. The LTA system does not auto-
matically drive the vehicle or reduce
the amount of attention that must be
paid to the area in front of the vehicle.
The driver must always assume full
responsibility for driving safely by pay-
ing careful attention to the surround-
ing conditions and operating the
steering wheel to correct the path of
the vehicle. Also, the driver must take
adequate breaks when fatigued, such
as from driving for a long period of
time.
●
Failure to perform appropriate driving
operations and pay careful attention
may lead to an accident, resulting in
death or serious injury.
●
When not using the LTA system, use
the LTA switch to turn the system off.
■
Situations unsuitable for LTA system
In the following situations, use the LTA
switch to turn the system off. Failure to do
so may lead to an accident, resulting in
death or serious injury.
●
Vehicle is driven on a road surface
which is slippery due to rainy weather,
fallen snow, freezing, etc.
●
Vehicle is driven on a snow-covered
road.
●
White (yellow) lines are difficult to see
due to rain, snow, fog, dust, etc.
●
Vehicle is driven in a temporary lane or
restricted lane due to construction
work.
●
Vehicle is driven in a construction
zone.
●
A spare tire, tire chains, etc. are
equipped.
LS500h_OM_General_OM50J66E