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:
Adjusting the sensitivity of the air intake control in automatic mode (vehicles
with a rear automatic air conditioning system)
Press for 2 or more seconds.
Press “� (increase) or “�
(decrease) on the temperature control button on the driver’s side.
From - 3 (low) to 3 (high) can be set.
...
Replacement parts
To ensure optimum performance and
maintain the quality built into your
vehicle’s emission control systems,
Lexus recommends the use of
Genuine Lexus Parts when servicing
or repairing the system ...
Operation and Maintenance
GENERAL INFORMATION
You are responsible for ensuring that your Lexus is operated and maintained according
to the instructions in the Owner’s Manual and the “Maintenance Information� section
...
