User Manual - Page 101

For 2015 ALFA ROMEO 4C.

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Some conditions may influence the performance of the
parking sensors:
The presence of ice, snow, mud or multiple layers of
paint on the sensor surface may cause reduced sensi-
tivity of the sensor itself and therefore reduce the
system performance.
Mechanical interference (e.g washing the car, rain,
strong wind, hail) may cause the sensor to detect a
non-existent obstacle (“echo interference”).
The presence of ultrasonic systems (e.g. pneumatic
brake systems of trucks or pneumatic drills) near the
car could alter the signals sent by the sensor.
The variation in sensor position, caused by variation in
ride (due to suspension component wear), changing
tires, overloaded car, or tuning that lowers the car, for
example, may affect parking sensor system perfor-
mance.
NOTE: The sensor must be free from mud, dirt snow or
ice in order for the system to operate correctly. Be careful
not to scratch or damage the sensors while cleaning them.
Avoid using dry, rough or hard cloths. The sensors must
be washed using clean water, with the addition of car
shampoo if necessary. When using special washing
equipment such as high pressure jets or steam cleaning,
clean the sensors very quickly keeping the jet more than
4 in (10 cm) away. Also, do not apply stickers to the
sensors.
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 99
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