Lexus LS 600h L 2012 Owner's Manual page 302

Notes for the pre-support function
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• If the detected parking space is too small, guidance will not start.
• To allow the pre-support system to activate accurately, move the vehicle as
slowly as possible (at a speed that will allow the vehicle to stopped suddenly).
• The function cannot be used if the shift position is in "P" or "R" position, or if the
vehicle speed is greater than 9 mph (15 km/h).
• In order to identify parking spaces and detect parked vehicle using the sensors
on both sides of the front bumper, guidance cannot be given if a space is not
detected.
• Parking space guidance and searching continues until the vehicle speed is
greater than 9 mph (15 km/h) or until the function is turned off by pushing the
pre-support switch.
• Perpendicular parking: The pre-support function can be only used for perpen-
dicular parking when a vehicle is parked beside the target parking space on the
side closest to your vehicle as it approaches.
Parallel parking: The pre-support function can be only used for parallel parking
when vehicles are parked both in front of and behind the target parking space.
Detecting white lines in parking assist mode (perpendicular parking)
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If there are no vehicles parked on either side of the target parking space when your
vehicle stops, the approximate parking space location is identified, and the white
lines in that location are detected. For this reason, stopping in front of the parking
space will make the detection of target parking space's white lines easier.
Successful detection of the parking space's white lines may not be possible,
depending on the shape of the line.
In the following circumstances, detection of the parking space lines on the road sur-
face may not be possible:
The lines are faded or dirty, making them unclear.
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The road surface is of a light color which does not contrast well with the white
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lines.
The parking space lines are a color other than white (yellow etc.).
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The area is dark, for example at night or in a covered parking lot.
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During or after rain, when the road surface is wet and reflects light, or puddles
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have formed.
The sun is shining directly on the camera, for example early morning or late
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afternoon.
The parking space is covered with snow or de-icing agent.
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There are markings or maintenance marks on the road surface.
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2-4. Using other driving systems
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