Alfa Romeo 2015 4C Owner's Manual page 101

• 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.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 99
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.
CAUTION!
• The Parking Sensor system is only a parking aid
and it is unable to recognize every obstacle, includ-
ing small obstacles. Parking curbs might be tem-
porarily detected or not detected at all. Obstacles
located above or below the sensors will not be
detected when they are in close proximity
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