Lexus GS 350 Owner's Manual page 810

808
What to do if... (Troubleshooting)
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. 70)
To stop the alarm, turn the engine switch to IGNITION ON mode
or start the engine.
A warning buzzer sounds when leaving the vehicle
Is the electronic key left inside the vehicle or the moon roof
●
opened?
Check the message on the multi-information display.
(→P. 704)
A warning light turns on or a warning message is displayed
When a warning light turns on or a warning message is dis-
●
played, refer to P. 686, 697.