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Troubleshooting
The front sensors shut down too early
The front sensors shut down before the speed reaches 10 km/h. The LEDs in the
control unit and on the external button switch off.
➤ Set parameter 14 ("number of speed signal pulses") to function "59", "61", "62"
or "63" (see chapter "Programming the system" on page 16).
Device indicates obstacles incorrectly
False alarms may have the following causes:
• Dirt or frost on the sensors
➤ Clean the sensors.
• Rain
➤ Check whether the front sensors are deactivated at a speed exceeding 10 km/h.
➤ Check whether a compatible speed signal is available.
If there is no speed signal available, set parameter 1 ("Speed signal/Time-out
front sensors") to function "14", "15" or "16" (see chapter "Programming the
system" on page 16).
• The sensors were incorrectly installed.
➤ Adjust the position or height of the sensors (fig. 2).
➤ Make sure that the appropriate sensor bracket was used (0°/12°/20°/bracket
for metal bumpers).
• The sensors are in contact with the chassis.
➤ Separate the sensors from the chassis.
No acoustic signal.
➤ Check whether the yellow LED in the control unit and the LED on the external but-
ton light up.
When the LEDs are flashing, the system is in emergency mode.
Start the vehicle again.
Objects on the vehicle (e.g. spare wheel) result in false alarms.
➤ Set parameter 12 ("Suppress display of fixed objects") to function "52", "53" or
"54" (see chapter "Programming the system" on page 16).
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WPS900F/WPS910
EN
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