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:
Safety Connect
Safety Connect is a subscription-based telematics service that uses Global
Positioning
System (GPS) data and embedded cellular technology to provide safety and
security
features to subscribers. ...
Multi-terrain Monitor
The Multi-terrain Monitor displays the vehicle surroundings when driving at
low speeds, thus assisting off-road driving and helping the driver to check the
vehicle surroundings.
The Multi-terrain ...
