Lexus ES 250 Owner's Manual page 237

236
4-5. Using the driving support systems
Inside of displayed lines is black

Indicates that the system is not able to
recognize white (yellow) lines or a
*
course or is temporarily canceled.
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
Operation conditions of each function
■
Lane departure alert function
●
This function operates when all of the fol-
lowing conditions are met.
• LDA is turned on.
• Vehicle speed is approximately 50 km/h
(32 mph) or more.
• System recognizes white (yellow) lines or
*
a course . (When a white [yellow] line or
*
course is recognized on only one side,
the system will operate only for the rec-
ognized side.)
• Width of traffic lane is approximately 3 m
(9.8 ft.) or more.
• Turn signal lever is not operated. (Vehicle
with BSM: Except when another vehicle
is in the lane on the side where the turn
signal was operated)
• Vehicle is not being driven around a
sharp curve.
• No system malfunctions are detected.
(P.237)
*
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
Steering assist function
●
This function operates when all of the fol-
lowing conditions are met in addition to the
operation conditions for the lane departure
alert function.
• Setting for "Steering Assist" in
multi-information display is set to "On".
(P.110)
• Vehicle is not accelerated or decelerated
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.237)
● Vehicle sway warning function
This function operates when all of the fol-
lowing conditions are met.
• Setting for "Sway Warning" in
multi-information display is set to "On".
(P.110)
• Vehicle speed is approximately 50 km/h
(32 mph) or more.
• Width of traffic lane is approximately 3 m
(9.8 ft.) or more.
• No system malfunctions are detected.
(P.237)
Temporary cancelation of functions
■
When operation conditions are no longer
met, a function may be temporarily can-
celed. However, when the operation condi-
tions are met again, operation of the
function is automatically restored.
(P.236)
Steering assist 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.
The steering control of the function is
●
overridden by the driver's steering wheel
operation.
Do not attempt to test the operation of
●
the steering assist function.
of the
of the