Lexus IS250 2009 Service Manual page 52

Operating the seat position memory after turning the "ENGINE START STOP"
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switch OFF
Memorized position can be activated up to 180 seconds after the front passenger
door is opened, even after turning the "ENGINE START STOP" switch OFF.
To cancel seat position recall
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Perform any of the following operations.
Push the "SET" button.
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Push button "1", "2" or "3".
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Adjust the seat position using the switches.
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If the battery is disconnected
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The memorized positions are erased when the battery is disconnected.
CAUTION
Seat adjustment caution
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Take care during seat adjustment that the seat does not strike the rear passenger.
1-3. Adjustable components (seats, mirrors, steering wheel)
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