Lexus 2012 RX450h Owner's Manual page 234

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2-1. Driving procedures
Downshift restrictions warning buzzer
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 or paddle shift switch is operated. (A buzzer will sound twice.)
When driving with cruise control activated
Even when performing the following actions with the intent of enabling engine
braking, engine braking will not activate while driving in M mode and downshifting
to 7, 6, 5 or 4 because cruise control will not be canceled. (P. 291)
Automatic deactivation of snow mode
If the "ENGINE START STOP" switch is turned off after driving in snow mode, the
mode is automatically deactivated.
If the shift lever cannot be shifted from P
P. 916
Automatic gear selection when the vehicle is stopped
When the vehicle comes to a stop, the transmission will automatically downshift to
allow you to start off in 1
If the automatic transmission fluid temperature warning message is displayed
234
st
gear.
If the automatic transmission fluid tempera-
ture warning message is displayed while
driving, make sure you return to normal D
position driving and reduce speed by eas-
ing off the accelerator pedal. Stop the vehi-
cle in a safe place, shift the shift lever to the
P position and let the engine idle until the
warning message goes out.
When the warning message goes out, the
vehicle can be driven again.
If the warning message does not go out
after waiting a while, have your vehicle
inspected by your Lexus dealer.

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