Lexus LS500h, Manual, Page: 234 / 524

234
4-5. Using the driving support systems
LS500h_OM_(U)_1810
WARNING
■ Before using LTA system
Do not rely solely upon the LTA system.
The LTA system does not automatically
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 driv-
ing safely by paying careful attention to
the surrounding conditions and operat-
ing 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.
■ 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.
● When the tires have been excessively
worn, or when the tire inflation pres-
sure is low.
● When tires of a size other than speci-
fied are installed.
● Vehicle is driven in traffic lanes other
than that highways and freeways.
● During emergency towing.
■ Situations in which the lane change
assist function should not be used
● When driving on a one lane road or
road without lane markers
● When there is no broken white line
between your vehicle and the lane
toward which the turn signal is oper-
ated
■ Preventing LTA system malfunctions
and operations performed by mistake
● Do not modify the headlights or place
stickers, etc. on the surface of the
lights.
● Do not modify the suspension etc. If
the suspension etc. needs to be
replaced, contact your Lexus dealer.
● Do not install or place anything on the
hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar,
etc.).
● If your windshield needs repairs, con-
tact your Lexus dealer.
■ Conditions in which functions may
not operate properly
In the following situations, the functions
may not operate properly and the vehicle
may depart from its lane. Drive safely by
always paying careful attention to your
surroundings and operate the steering
wheel to correct the path of the vehicle
without relying solely on the functions.