Table of Contents
Advertisement
(P.306)
• Vehicle does not accelerate or
decelerate by a fixed amount or more.
• Steering wheel is not operated with a
steering force level suitable for changing
lanes.
• ABS, VSC, TRC and PCS are not oper-
ating.
• TRC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. (P.305)
• The driver has one or both hands on the
steering wheel. (vehicles with Lexus
Safety System + A)
• The vehicle is being driven in the center
of a lane.
• Steering assist function is not operating.
Temporary cancelation of functions
■
When operation conditions are no longer
●
met, a function may be temporarily
canceled. However, when the operation
conditions are met again, operation of the
function is automatically restored.
(P.304)
If the operation conditions (P.304) are
●
no longer met while the lane centering
function is operating, the steering wheel
may vibrate and the buzzer may sound to
indicate that the function has been tem-
porarily canceled. However, if the "Alert"
customization setting is set to
the system will notify the driver by vibrat-
ing the steering wheel instead of sound-
ing the buzzer.
If a message urging operation of the steer-
ing wheel is displayed, operate the steering
wheel.
Steering assist function/lane centering
■
function
Depending on the vehicle speed, lane
●
departure situation, road conditions, etc.,
the driver may not feel the function is
operating or the function may not oper-
ate at all.
Even if the curve speed reduction func-
●
tion (P.321) operates, the lane center-
ing function may not be able to drive the
vehicle around a curve successfully.
(vehicles with Lexus Safety System + A)
LS500h_OM_General_OM50J66E
4-5. Using the driving support systems
The steering control of the function is
●
overridden by the driver's steering wheel
operation.
When the vehicle speed is approximately
●
50 km/h (31 mph) or less, the warning
display of the lane centering function will
not operate.
Do not attempt to test the operation of
●
the steering assist function.
The steering assist function may operate
●
when attempting to cut closely in front of
another vehicle while changing lanes.
Lane departure alert function
■
The warning buzzer may be difficult to
●
hear due to external noise, audio play-
back, etc. Also, it may be difficult to feel
steering wheel vibrations due to the road
conditions, etc.
If the edge of the course
●
straight, the lane departure alert function
may not operate.
Vehicle with BSM: It may not be possible
●
for the system to determine if there is a
danger of a collision with a vehicle in an
adjacent lane.
Do not attempt to test the operation of
●
the lane departure alert function.
This function may operate if, when chang-
●
,
ing lanes, your vehicle cuts closely in front
of another vehicle.
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
Hands off steering wheel warning
■
In the following situations, a warning mes-
sage urging the driver to hold the steering
wheel and the symbol shown in the illustra-
tion are displayed on the multi-information
display to warn the driver. The warning
stops when the system determines that the
driver holds the steering wheel. Always
keep your hands on the steering wheel
when using this system, regardless of warn-
ings.
Depending on the vehicle condition and
road conditions, the warning may not oper-
ate. Also, if the system determines that the
305
4
*
is not clear or
Advertisement
Table of Contents
