Parking Brake Operation Sound; Parking Brake Indicator Light And Parking Brake Lamp; Changing The Mode (Parking Brake); Parking Brake Engaged Warning Buzzer - Lexus RX 450H Owner's Manual

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4-2. Driving procedures

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.

Parking brake indicator light and parking brake lamp

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Depending on the power switch mode, the parking brake indicator light and parking
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brake lamp will turn 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 parking brake indi-
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cator light and parking brake lamp will stay on for about 15 seconds. This does not indi-
cate a malfunction.
Changing the mode
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When changing the automatic mode on/off, the message will be shown on the multi-
information display and the buzzer sounds.

Parking brake engaged warning buzzer

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A buzzer will sound if the vehicle is driven with the parking brake engaged. "Release
Parking Brake" is displayed on the multi-information display.
Warning messages and buzzers
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Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. If a warning message is shown on the multi-information
display, read the message and follow the instructions.
If the brake system warning light comes on
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→P. 537
Usage in winter time
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→P. 392
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