Lexus 2013 IS250 Owner's Manual page 249

CAUTION

Before using the LDA system
Do not rely solely on the LDA system. The LDA 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 surroundings, 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 LDA by mistake
Switch the LDA system off using the LDA switch when not in use.

Situations unsuitable for LDA system
Do not use the LDA system in any of the following situations.
Otherwise, the system may not function correctly and could result in an acci-
dent.

When driving with tire chains, a spare tire, or similar equipment

When there are objects or structures along the roadside that might be misin-
terpreted as lane markers (such as guardrails, a curb, reflector posts, etc.)

When driving on snowy roads

When pavement lane markers are difficult to see due to rain, snow, fog, sand
dust etc.

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

When driving on a road with lane closures due to maintenance, or when driv-
ing in a temporary lane
IS250_EE(OM53B11E)
4-5. Using the driving support systems
247
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