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Explanation of Displays
Check
Receiver
Wiring
WorkZone
Caution
X
|
, or K
|
,
or
KA
|
etc.
Receiver
Error
GPS N/A
There is a problem with the front receiver (it could be an unplugged
connection, damaged wiring, or a problem within the front receiver
itself). The 8500ci Plus will continue to display this message and will not
operate until the problem has been repaired.
One of the many safety radar messages (page 25)
The 8500ci Plus has detected a safety radar signal, but the signal isn’t yet
strong enough to decode the specific safety message (pages 24-25)
The 8500ci Plus is in ExpertMeter mode (pages 10-11)
The 8500ci Plus has failed to calibrate. Contact your dealer for repair.
Not able to receive GPS signal. Check GPS antenna connection.
26 27
Problem
Detector beeps briefly at the same
location every day, but no radar
source is in sight.
Detector did not alert when a
police car was in view.
Detector did not provide a safety
signal while within range of an
emergency vehicle.
Detector’s audible alerts become
softer after the first few alerts.
Detector only provides a double-
beep during an alert.
The 8500ci Plus’s power-on
sequence reoccurs while you are
driving.
You wish to restore the factory
default settings for Preferences.
The 8500ci Plus will not turn on.
The 8500ci Plus’s display feels
warm.
Solution
• An X-band motion sensor or intrusion alarm is located
within range of your route. See “TrueLock” in the Controls and
Features section for details on how to lock out this alert.
• VASCAR (Visual Average Speed Computer and Recorder), a
stopwatch method of speed detection, may be in use.
• Officer may not have radar or laser unit turned on.
• Safety transmitters may not be commonly used in your area.
• Detector is in AutoMute mode. See “AutoMute” in the
Preferences section for details.Safety transmitters may not be
commonly used in your area.
• Cruise Alert is enabled. If you prefer full alerts regardless of
your speed, see “Cruise Alert” in the Controls and Features
section for details on how to turn this feature off.
• A loose power connection can cause the 8500ci Plus to be
briefly disconnected and will retrigger the power-on
sequence.
• You can return all of the Preferences to the factory default
settings by holding down the CRU and SEN buttons while
you turn the 8500ci Plus on.
• Check that vehicle ignition is on.
• Check all connections.
• It is normal for the device to feel warm.
Troubleshooting