Toyota Prius 2011 Manual page 263

CAUTION
Handling the radar sensor
■
Observe the following to ensure the pre-collision system can function effec-
tively.
●
Keep the sensor and grille cover clean at all time.
Clean the sensor and grille cover with a soft cloth so you do not mark or
damage them.
Do not subject the sensor or surrounding area to a strong impact. 
●
If the sensor moves even slightly off position, the system may malfunction.
If the sensor or surrounding area is subject to a strong impact, always
have the area inspected and adjusted by your Toyota dealer.
●
Do not disassemble the sensor.
●
Do not attach accessories or stickers to the sensor, grille cover or sur-
rounding area.
●
Do not modify or paint the sensor and grille cover.
Limitations of the pre-collision system
■
Do not rely on the pre-collision system. Always drive safely, taking care to
observe your surroundings and checking for any obstacles or other road
hazards.
2-4. Using other driving systems
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