CITROEN C4 Aircross 2013 Owner's Handbook Manual page 57

To select the mode:
Press the " PWR/VOL " button to switch on
the audio system.
Press the MENU button.
Press the SEL knob to scroll through the
menus and select " RDS setting - CT ON -
CT OFF " (clock time).
Turn the SEL knob to the left or to the right
to select "CT OFF" (manual mode)
or "CT ON" (automatic mode).
Press the SEL knob to confirm.
If no action is carried out within
10 seconds, the selection menu closes
automatically.
Manual adjustment
Press the PWR/VOL button to switch on
the audio system.
Press the MENU button.
Press the SEL knob to run scroll through
the menus and select " Time Setting
Adjust ".
Turn the SEL knob to select " ON " for
access to time setting.
Press the SEL knob to confirm.
Turn the SEL knob to adjust the time.
Press the SEL knob to confirm.
The digital clock does not display
seconds.
The time setting is lost if the battery is
disconnected.
Monitoring
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