Lexus GX 460 2020 Owner's Manual page 618

An alarm is activated and the horn sounds
Did anyone inside the vehicle open a door during setting the alarm?
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The sensor detects it and the alarm sounds. (P. 73)
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. 558)
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. 551, 558.
When a problem has occurred
If you have a flat tire
Stop the vehicle in a safe place and replace the flat tire with the spare tire.
●
(P. 562)
The vehicle becomes stuck
Try the procedure for when the vehicle becomes stuck in mud, dirt, or snow.
●
(P. 587)
GX460_OM_OM60R28E_(GE)
What to do if... (Troubleshooting)
617