Radio
The external environment (hill, building, tunnel, car park, underground...) may disrupt reception, including in RDS tracking mode.
This phenomenon is normal in the propagation of radio waves and in no way indicates a fault with the car radio.
SELECTING A STATION
1.
Press the RADIO button to display the list of locally received stations, sorted alphabetically.
Select the desired station by turning the wheel and press to confirm.

In radio mode, press one of the RDS keys to select the previous or next station in the list.

Press and hold one of the keys to start automatic station search toward lower or higher frequencies.

Press and hold any key on the numeric keypad for more than 2 seconds to store the station you are listening to.
Press the numeric keypad key to recall the stored radio station.
RDS - REGIONAL MODE
1.
When the radio station you are listening to is displayed on the screen, press the wheel.

2. The shortcut menu for the radio source appears and provides access to the following shortcuts:

3.
Select the desired function and press the wheel to confirm and access the corresponding settings.

If displayed, RDS allows you to keep listening to the same station using frequency tracking. However, under certain conditions, tracking of this RDS station is not guaranteed across the entire country, as radio stations do not cover 100% of the territory. This explains the loss of station reception during a journey.
Test yourself
A quick Citroen C5 Aircross quiz: every answer comes with an explanation and a link to the manual page.