Automatic Deactivation Of Shift Range Selection In The D Position (Vehicles With Paddle Shift Switches); S Mode; Downshifting Restriction Warning Buzzer; Shift Lock System - Lexus RX 450H Owner's Manual

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4-2. Driving procedures
When the "-" paddle shift switch is operated with the shift lever in the D position (vehi-
■
cles with paddle shift switches)
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 (vehicles with paddle
■
shift switches)
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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S mode

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When the shift range is S4 or lower, holding the shift lever toward "+" sets the shift
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range to S6.
Automatically selects a higher shift range before the engine speed becomes too high.
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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 (if equipped) is operated. (A buzzer will sound twice.)
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.
Vehicles without paddle shift switches: While driving in S mode, downshifting to 5 or 4.
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(→P. 303, 316)
Vehicles with paddle shift switches: While driving in D or S mode, downshifting to 5 or
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4. (→P. 303, 316)
When switching the driving mode to sport mode while driving in D position.
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(→P. 378)
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)
●
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.
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