2012 Lexus LS 460 Owners Manual - Page 183

185

2-1. Driving procedures

2

■

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 the cruise control system

Engine braking will not occur during shift range selection in the “D” position, even

when downshifting to range “7”, “6”, “5” or “4”. (

→

P. 226, 230)

■

Power mode and snow mode automatic deactivation

Power mode and snow mode are automatically deactivated if the “ENGINE START

STOP” switch is turned OFF after driving in power mode or snow mode.

■

Operation of the air conditioning system in Eco drive mode

Eco drive mode controls the heating/cooling operations and fan speed of the air

conditioning system to enhance fuel efficiency. (

→

P. 352, 362) To improve air con-

ditioning performance, adjust the fan speed or turn off Eco drive mode.

■

If the shift lever cannot be shifted from °P±

→

P. 752

■

If the automatic transmission fluid temperature warning message is displayed

If the automatic transmission fluid temperature warning message is displayed while

driving, make sure you return to normal “D” position driving and reduce speed by

easing off the accelerator pedal. Stop the vehicle 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.

■

AI-SHIFT

The AI-SHIFT automatically selects the suitable gear according to driver perfor-

mance and driving conditions.

The AI-SHIFT automatically operates when the shift lever is in the “D” position.

(Shifting the shift lever to the “M” position cancels the function.)

The engine speed may remain high after releasing the accelerator pedal. This does

not indicate a malfunction.