Lexus GS 350, Owner'S Manual, Page: 237 / 831

GS350_U (OM30C34U)
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4-5. Using the driving support systems
4
Dr
ivi
ng
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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. 700, 708)
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.
■
To avoid operating the LKA by mistake
Switch the LKA off using the “LKA” switch when not in use.
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Situations unsuitable for LKA
Do not use LKA in any of the following situations.
Otherwise, the system may not function correctly and could result in an accident.
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When driving with snow tires, tire chains, a spare tire, or similar equipment
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When the tires have been excessively worn, or when the tire inflation pressure is
low.
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When there are objects or structures along the roadside that might be misinter-
preted as lane markers (such as guardrails, curb, reflector posts, etc.)
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When driving on snowy roads
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When pavement lane markers are difficult to see due to rain, snow, fog, etc.
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When there are visible lines on the pavement from road repairs, or if the remains
of old lane markers are still visible on the road
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When driving on slippery roads, such as those covered with rain, ice or snow
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When driving in a lane other than the driving or passing lanes on a freeway or
highway
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When driving on a road with lane closures due to maintenance, or when driving
in a temporary lane
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When emergency towing