CITROËN DS 4 Handbook page 53

Setting the date and time
F Select the "Settings" menu.
F In the secondary page, press on "Time/
date".
F Select "Adjust time" or "Adjust date".
When setting the time, you can select
"Satellite synchronisation", so that
the minutes are adjusted automatically
by satellite reception.
F Modify the settings using the number
keypad, then confirm.
F Press "Confirm" to save and quit.
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Monitoring