Lexus GS450h Owner's Manual page 228

228
4-2. Driving procedures
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
●
If the accelerator pedal is depressed for more than a certain period of time
●
When the shift lever is shifted to other than D
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Downshifting restrictions 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 with full-speed range
■
activated
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
with full-speed range will not be canceled.
GS450h: While driving in the D position or S mode, downshifting to 7, 6, 5 or 4.
●
(P. 296, 308)
GS300h: While driving in the D position, downshifting to 5 or 4. (P. 296, 308)
●
When switching the driving mode to sport mode while driving in D position. (P. 311)
●
Restraining sudden start (Drive-Start Control)
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When the following unusual operation is performed, the engine 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) with the accelerator pedal depressed, a warning message appears on
the multi-information display. (P. 466)
• When the accelerator pedal is depressed too much while the vehicle is in reverse.
Shift lock system
■
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.
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