Lexus LS460 2008 Owner's Manual page 154

2-1. Driving procedures
"S" mode
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When the shift range is "6" or lower, holding the shift lever toward "+" sets the
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shift range to "8. "
When the shift range is "6" or higher, moving the shift lever toward "-" may
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change down by 2 shift ranges or more depending on driving conditions.
To prevent the engine from over-revving, upshifting may automatically occur.
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Downshifting restrictions warning buzzer (in the "S" mode)
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To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even
when the shift lever is operated. (The warning buzzer will sound twice.)
When driving with the cruise control system
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Engine brake will not operate in the "S" mode, even when downshifting to "7", "6",
"5" or "4". (P. 182, 185)
Snow mode automatic deactivation
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Snow mode is automatically deactivated if the "ENGINE START STOP" switch is
turned OFF after driving in snow mode.
If the shift lever cannot be shifted from "P"
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P. 652
AI-SHIFT
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The AI-SHIFT automatically shifts the gear to the optimal position according to the
driver performance and driving conditions.
The AI-SHIFT automatically operates when the shift lever is in the "D" position.
(Shifting the shift lever to the "S" position cancels the function.)
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