Lexus GS 450h, Owner'S Manual

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GS450h_OM_OM30E26U_(U)
4-5. Using the driving support systems
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When driving on winding roads or roads that are uneven
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When driving on rough or unpaved roads
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When changing the tires
Depending on the tires used, sufficient performance may not be maintainable.
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Warning messages for LKA
Warning messages are used to indicate a system malfunction or to inform the driver
of the need for caution while driving. (

P. 516, 526)
CAUTION
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Before using the LKA system
Do not rely solely on the LKA system. The LKA system does not drive the vehicle
automatically, nor does it reduce the amount of care you need to take. As such, the
driver must always assume full responsibility for understanding his/her surround-
ings, for operating the steering wheel to correct the driving line, and for driving
safely.
Inappropriate or negligent driving could lead to an accident.
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To avoid operating the LKA by mistake
Switch the LKA off using the “LKA” switch when not in use.