2010 Lexus GS 450h Owners Manual - Page 155

157

2-1. Driving procedures

2

GS_HV_U (OM30C81U)

June 30, 2011 9:20 am

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Downshifting restrictions warning buzzer (in the °S± mode)

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 is operated. (The warning buzzer will sound twice.)

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When driving with the cruise control system (or dynamic radar cruise control sys-

tem)

The engine brake will not operate in the “S” mode, even when downshifting to “5” or

“4”. (

→

P. 181

,

P. 184)

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Snow mode automatic deactivation

Snow mode is automatically deactivated if the “POWER” switch is turned to

ACCESSORY or ON mode after driving in snow mode.

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If the shift lever cannot be shifted from °P±

→

P. 573

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If the

indicator does not come on even after shifting the shift lever to °S±

This may indicate a malfunction in the transmission. Have the vehicle inspected by

your Lexus dealer immediately.

(In this situation, the vehicle will operate as if the shift lever is in “D”.)

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When in heavy traffic

To avoid running the hybrid battery (traction battery) down, leave the shift lever in

“D” or “S”.