Lexus LS 600h L 2012 Owner's Manual page 200

Parking brake operation
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When the "POWER" switch is not in ON mode, the parking brake cannot be
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released using the parking brake switch.
When the "POWER" switch is not in ON mode, automatic mode (automatic
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brake setting and releasing) is not available.
If the parking brake is operated repeatedly over a short period of time, the sys-
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tem may restrict operation to prevent overheating. If this happens, refrain from
operating the parking brake. Normal operation will return after about 1 minute.
Parking brake indicator light
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Depending on the "POWER" switch mode, the parking brake indicator light will
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come on and stay on as described below:
ON mode: Comes on until the parking brake is released.
Not in ON mode: Stays on for approximately 15 seconds.
When the "POWER" switch is turned OFF with the parking brake set, the park-
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ing brake indicator light will stay on for about 15 seconds. This does not indicate
a malfunction.
Parking brake operation sound
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When the parking brake operates, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
When there is a malfunction in the system
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Warning lights and/or warning messages will turn on or flash. (→P. 504, 514)
Depending on the condition, the parking brake indicator light may flash.
Usage in winter time
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See "Winter driving tips" for parking brake usage in winter time. (→P. 331)
2-1. Driving procedures
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