Toyota 2015 Prius Owner's Manual page 298

2-4. Using other driving systems
CAUTION
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 under-
standing 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 LKA by mistake
■
Switch the LKA off using the "LKA" switch when not in use.
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 acci-
dent.
●
When driving with snow tires, tire chains, a spare tire, or similar equipment
●
When the tires have been excessively worn, or when the tire inflation pres-
sure is low.
●
When there are objects or structures along the roadside that might be mis-
interpreted as lane markers (such as guardrails, curb, reflector posts, etc.)
●
When driving on snowy roads
●
When pavement lane markers are difficult to see due to rain, snow, fog,
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 slippery roads, such as those covered with rain, ice or
snow
●
When driving in a lane other than the driving or passing lanes on a freeway
or highway
●
When driving on a road with lane closures due to maintenance, or when
driving in a temporary lane
●
During emergency towing
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