In rare instances, your navigation radio may not function the way you expect it to af-
ter installation. Before calling the service department, please read the installation in-
structions thoroughly and go through the following check list; it may be possible to
quickly remedy an apparent malfunction.
Symptoms
Possible cause / remedy
General
Navigation radio not functioning. No display.
• Check the fuse (unit and vehicle) and the connections (see installation
instructions).
System switches off the sound during driving or
display shows the “TEL” symbol.
Speedometer signal connected to the wrong pin of the power supply
connector.
• See pin setting ISO chamber A in the installation instructions.
The telephone is not being detected even
though it has been connected to the radio.
• Call up the setup menu, select “Telephone –> Signal” and select “High” for
Nokia hands-free units.
The volume decreases automatically. The
volume can no longer be increased.
An integrated safety circuit prevents the temperature in the unit from
exceeding a certain value.
• Allow the unit to cool down (set low volume).
Unit not functioning properly/ at all on some
VW/ Audi vehicles.
Some VW and Audi vehicles have different power supply connector pin
assignments (ISO chamber A).
• Please ask your dealer for a suitable adapter.
Radio
Poor or no radio reception.
For antennas with phantom power (active antenna):
• First connect the antenna and then the voltage supply to the unit.
• Check if the antenna is completely extended and correctly connected.
• Check whether the supply voltage’s negative pole (brown cable) is correctly
connected to earth (vehicle chassis).
CD/ MP3 /CD changer
CD player does not work.
In cold weather conditions, condensation may occur on the laser.
• Wait for 5 minutes until the condensation evaporates.
Navigation
The number of satellites is 0 in the setup menu
under “System –> Installation –> Syst. status”.
• Ensure that the GPS antenna is not covered by any objects.
• Move the vehicle outdoors if you are in a garage, a car park or a tunnel.
The directions cannot be heard or are very
quiet.
• Set the navigation information volume in the setup menu under “Navigation
–> Navi volume”.
Guidance is not accurate.
An inaccuracy of approx. 30 m is within the tolerance limits.
• Please contact an authorised dealer if greater inaccuracies occur repeatedly.
The displayed distance to the turning point is calculated to the centre of the
junction (especially for extended junctions and main road exits).
Displayed position does not correspond to
actual vehicle position.
Bad GPS reception for an extended period (e.g. as a result of poor reception
conditions). The position is corrected automatically as soon as satisfactory GPS
reception resumes.
• If necessary, wait a few minutes.
Directions do not correspond to the actual
traffic conditions.
It is possible that the car’s position as calculated by the navigation system is
not currently correct.
The routing may have been changed and does not correspond with the
information stored on the map CD.
Displayed time is incorrect.
• Adjust the time zone using the “Clock/ Date –> Time zone” option in the
setup menu.
Estimated time of arrival displayed on the
guidance screen is incorrect.
• Check the time zone using the “Clock/ Date –> Time zone” option in the
setup menu.
C-IQ
No traffic information is being displayed during
guidance.
You have not activated the C-IQ Traffic info.
• Contact C-IQ service to activate Traffic info products.
Troubleshooting
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