Lexus LS460 2011 Owner's Manual page 390

2-4. Using other driving systems
CAUTION

Precautions for the radar sensor and rear bumper
The rear bumper of vehicles with a rear pre-crash safety system is a func-
tional part that has radio wave permeability. Observe the following to ensure
the system can function effectively:

Keep the rear bumper clean at all times.
Raindrops, ice or snow may deteriorate radar sensor performance.

Do not subject the radar sensor or surrounding area to a strong impact.
If the sensor moves even slightly out of position, the system may malfunc-
tion. If the sensor or surrounding area is subjected to a strong impact,
always have the area inspected and repaired by authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.

Do not disassemble the radar sensor.

Do not attach a towing hitch, bike holder, protective film or stickers to the
center portion of the rear bumper.

Do not replace the rear bumper with non-genuine parts or modify it.

For painting or repair of the rear bumper, consult with any authorized
Lexus dealer or repairer, or another duly qualified professional.

Precaution for the pre-crash intelligent head restraints
Do not put head restraint covers.
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