Lane Keep Assist
56
Ÿ Continued from previous page
- Frozen roads, snow-covered roads or other slippery road surfaces
The tires may spin, causing loss of control of the vehicle.
- When entering a sharp curve into an interchange or junction, or a service
area, parking area, toll booth or other facilities.
- When there are changes in brightness, such as at a tunnel entrance or
exit.
- When visibility is poor due to sand, smoke or water vapor blowing in the
wind, or when the vehicle in front or oncoming traffic causes water,
snow, dirt or dust to obscure the view.
- When there is snow, frost, dirt or dust on the windshield or it is clouded.
- When water droplets from rain or dirt have not been fully wiped off on the
windshield.
It may not be possible to detect the lane, making correct control impossi-
ble.
- When the stereo cameras’ field of view is obstructed (for example by a
canoe on the roof of the vehicle).
- The stereo cameras may have difficulty detecting the objects under the
following conditions and the system may not operate properly.
- When driving at night or in a tunnel without the headlights on.
- When light is poor in the evening or early morning.
- In bad weather (for example, rain or snow)
- The distance between your vehicle and the vehicle in front is short, mak-
ing it difficult to detect lane markings.
- When a vehicle intruded from an adjacent lane or the vehicle in front
changed lanes.
- The shape of a curve in the road suddenly changes.
- Shadows of guardrails or similar objects are overlapped on the lane
markings.
- When your vehicle is exposed to a strong light from the front (backlight
from the sun, headlights, etc.).
- The width of a lane is narrow.
- The stereo cameras may have difficulty detecting the lane due to the per-
formance of the cameras.
xThere are no lane markings or they are very worn.
xThe lane markings are painted in yellow.
xIt is difficult to detect lane markings because they are similar in color to
the road surface.
xThe lane markings are drawn in double.
xThe width of lane markings is narrow.
xThe indicated lines for the area are touched to walls and poles.
- The shape of lane markings suddenly changes (entrance/exit of a curve,
crank and S-shaped road, etc.).
- There is curb or side wall in the road shoulder.
- The brightness changes such as when you drive under an overpass.
Lane Keep Assist
59
Press the (Lane Keep Assist) switch once again to turn it off, and “ ” (Lane Keep
Assist indicator) is turned off on the EyeSight display area.
The Lane Departure Prevention Function goes into the standby status, and the lane indica-
tor illuminates when all of the following conditions are met.
xThe vehicle speed is between approximately 40 MPH (65 km/h) and 90 MPH (145 km/h).
xThe system is detecting the lane markings.
xThe driver is holding the steering wheel.
xWhen driving on a road that has a lane width that is between approximately 10 ft (3 m)
and 15 ft (4.5 m).
xWhen driving on a straight road or gentle curve.
xWhen driving near the center of a lane.
When the vehicle is about to depart from the lane, Lane Departure Prevention Function
starts to operate and “ ” (Lane Keep Assist indicator) illuminates in green while it is
operating.
NOTE
xIf you just lightly put your hands on the steering wheel for a certain period
of time or if you do not operate the steering wheel, the function will auto-
matically be canceled. (“ ” Lane Keep Assist indicator) illuminates in
white again.)
xLane Departure Prevention Function operates when the system deter-
mines that the vehicle will depart from the lane if you continue to drive in
the same manner. Therefore, it operates at an earlier timing than Lane
Departure Warning (
Ÿ Refer to page 68.) (it may depend on the surround-
ing environment and road condition).
xThe lane indicator in the standby status and in operation may illuminate
only on the left side or right side.
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S02045
Lane Keep
Assist
indicator
(white) Turned on Standby status In operation
(white) (green)
