Lexus 2007 GS430 Quick Manual page 179

Downshifting restrictions in "S" mode
n
The shift lever cannot be downshifted if the following speeds are exceeded. (The
warning buzzer will sound twice in this situation.)
Downshifting
5 4
4 3
3 2
2 1
The maximum speeds can get lower when the engine is not warm such as in cold
climates or before warm-up.
When driving with the cruise control system (or dynamic radar cruise control sys-
n
tem)
The engine brake will not operate in the "S" mode, even when downshifting to "5" or
"4". ( P. 124, 127)
Snow mode automatic deactivation
n
Snow mode is automatically deactivated if the engine switch is turned to "ACC" or
"IG-ON" mode after driving in snow mode.
If the shift lever cannot be shifted from "P"
n
P. 484
If the indicator does not come on even after shifting the shift lever to "S"
n
This may indicate a malfunction in the automatic transmission system. Have the
vehicle inspected by your Lexus dealer immediately.
(In this situation, the vehicle will operate as if the shift lever is in "D".)
AI-SHIFT
n
The AI-SHIFT automatically shifts the gear to the optimal position according to the
driver's input and driving conditions.
The AI-SHIFT automatically operates when the shift lever is in the D position. (Shift-
ing the shift lever to the S position cancels the function.)
Maximum speed
mph (km/h)
GS430
120 (194)
88 (142)
59 (95)
24 (38)
I n f o r ma t i o n P r o v i d e d b y :
2-1. Driving procedures
GS350
124 (200)
87 (141)
56 (91)
28 (45)
103
2