Lexus RX 450h Owner's Manual page 313

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Steering assist function

When the system determines that the

vehicle might depart from its lane or

, the system provides assis-

tance as necessary by operating the

steering wheel in small amounts for a

short period of time to keep the vehicle

in its lane.

If the system detects that the steering

wheel has not been operated for a fixed

amount of time or the steering wheel is not

being firmly gripped, a warning is displayed

on the multi-information display and the

function is temporarily canceled.

Vehicle with BSM: When the system deter-

mines that the vehicle might depart from its

lane and that the possibility of a collision

with an overtaking vehicle in the adjacent

lane is high, the steering assist function will

operate even if the turn signals are operat-

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

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4-5. Using the driving support systems

Vehicle sway warning function

When the vehicle is swaying within a

lane, the warning buzzer will sound and

a message will be displayed on the

multi-information display to alert the