A Warning Buzzer Sounds During Driving; An Alarm Is Activated And The Horn Sounds; A Warning Buzzer Sounds When Leaving The Vehicle; A Warning Light Turns On Or A Warning Message Is Displayed - Lexus RX 450H Owner's Manual

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What to do if... (Troubleshooting)

A warning buzzer sounds during driving

The seat belt reminder light is flashing
●
Are the driver and the passengers wearing the seat belts?
(→P. 539, 539)
The parking brake indicator is on
●
Is the parking brake released? (→P. 248)
Depending on the situation, other types of warning buzzer may also sound.
(→P. 537, 544)

An alarm is activated and the horn sounds

Did anyone inside the vehicle open a door during setting the alarm?
●
The sensor detects it and the alarm sounds. (→P. 87)
Do one of the following to stop the alarms:
• Unlock the doors.
• Turn the power switch to ACCESSORY or ON mode, or start the hybrid system.

A warning buzzer sounds when leaving the vehicle

Is the message displayed on the multi-information display?
●
Check the message on the multi-information display. (→P. 544)

A warning light turns on or a warning message is displayed

When a warning light turns on or a warning message is displayed, refer to
●
P. 537, 544.
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