CITROEN BERLINGO MULTISPACE Handbook page 207

Radio
QUESTION
There is a difference in sound quality between
the different audio sources (radio, CD, etc.).
The preset stations do not function (no sound,
87.5 MHz is displayed, etc.).
The traffic announcement (TA) is displayed. I do
not receive any traffic information.
The reception quality of the tuned radio station
gradually deteriorates or the preset stations are
not working (no sound, 87.5 MHz is displayed,
etc.).
Sound cut-outs of 1 to 2 seconds in radio mode.
RESPONSE
To allow for optimal listening quality, the audio
settings (Volume, Bass, Treble, Ambience,
Loudness) can be tailored to different
sound sources, which can generate audible
differences when changing source (radio, CD,
etc.).
An incorrect waveband is selected.
The radio station is not part of the regional
traffic information network.
The vehicle is too far from the transmitter of
the station or no transmitter is present in the
geographical area.
The environment (hills, buildings, tunnels,
basement car parks, etc.) is blocking reception,
including in RDS mode.
The aerial is missing or has been damaged (for
example when going through an automatic car
wash or in an underground car park).
During this brief sound cut-out, the RDS
searches for another frequency giving better
reception of the station.
https://www.automotive-manuals.net/
SOLUTION
Check that the audio settings (volume, bass,
treble, ambience, loudness) are adapted to
the sources listened to. It is advisable to set
the audio functions (Bass, Treble, Front-Rear
Balance, Left-Right Balance) to the middle
position, select the musical ambience "None"
and set the loudness correction to the "Active"
position in CD mode or to the "Inactive" position
in radio mode.
Press the BAND AST button to return to the
waveband (AM, FM1, FM2, FMAST) on which
the stations are stored.
Tune to a radio station which broadcasts traffic
information.
Activate the RDS function to allow the system to
see if a more powerful transmitter is within the
geographic area.
This phenomenon is normal and does not
indicate a failure of the audio equipment.
Have the aerial checked by a CITROËN dealer.
Switch off the RDS function if the phenomenon
is too frequent and always on the same route.
Audio system
.
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