Lexus 2013 IS250C Owner's Manual page 154

2-1. Driving procedures
■
Shift ranges and their functions
Shift range
6
5
4
3
2
1
A lower shift range will provide greater engine braking forces than a higher shift
range.
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Automatically selecting gears between 1 and 6
according to vehicle speed and driving conditions.
Automatically selecting gears between 1 and 5
according to vehicle speed and driving conditions.
Automatically selecting gears between 1 and 4
according to vehicle speed and driving conditions.
Automatically selecting gears between 1 and 3
according to vehicle speed and driving conditions.
Automatically selecting gears between 1 and 2
according to vehicle speed and driving conditions.
Setting the gear at 1.
Function