Lexus IS300H 2017 Manual page 230

230
4-2. Driving procedures
When the "-" paddle shift switch is operated with the shift lever in the D position
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The shift range is downshifted to a range that enables engine braking force that is suit-
able to driving conditions.
Automatic deactivation of shift range selection in the D position
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Shift range selection in the D position will be deactivated in the following situations:
When the vehicle comes to a stop
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If the accelerator pedal is depressed for more than a certain period of time
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When the shift lever is shifted to a position other than D
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Downshifting restriction warning buzzer
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To help ensure safety and driving performance, downshifting operation may sometimes
be restricted. In some circumstances, downshifting may not be possible even when the
shift lever or paddle shift switch is operated. (A buzzer will sound twice.)
Snow mode automatic deactivation
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Snow mode is automatically deactivated if the power switch is turned off after driving in
snow mode.
When driving with cruise control or dynamic radar cruise control activated
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Even when performing the following actions with the intent of enabling engine braking,
engine braking will not activate because cruise control or dynamic radar cruise control
will not be canceled.
While driving in D or S mode, downshifting to 5 or 4. (P. 293, 305)
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When switching the driving mode to sport mode while driving in D position. (P. 348)
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Restraining sudden start (Drive-Start Control)
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When the following unusual operation is performed, the hybrid system output may be
restrained.
When the shift lever is shifted from R to D, D to R, N to R, P to D, or P to R (D includes S)
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with the accelerator pedal depressed, a warning message appears on the multi-infor-
mation display. If a warning message is shown on the multi-information display, read the
message and follow the instructions.
When the accelerator pedal is depressed too while the vehicle is in reverse.
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Shift lock system
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The shift lock system is a system to prevent accidental operation of the shift lever in start-
ing.
The shift lever can be shifted from P only when the power switch is in ON mode and the
brake pedal is being depressed.