Radar sensor
Lexus GX / Lexus GX Owners Manual / When driving / Using other driving systems / PCS (Pre-Collision System) / Radar sensor
The radar sensor detects vehicles or other obstacles on or near the road ahead and determines whether a collision is imminent based on the position, speed, and heading of the obstacles.

See also:
Horn
To sound the horn, press on or close to the
mark.
...
Locking or unlocking the phone book
Select “Phonebook Lock (Phbk Lock)”
or “Phonebook Unlock (Phbk Unlock)” using a voice command or the “TUNE/SEL” knob.
Input the PIN by either of the following
methods and select “ ...
Armrest
Fold down the armrest for use.
NOTICE
- To prevent damage to the armrest
Do not apply too much load on the armrest. ...
