CITROËN DS 4 Handbook page 48

F Press the "7" or "8" buttons to set the
value required (15, 30 or 60 seconds), then
press the "OK" button to confirm.
F Press the "5" or "6" buttons, then the
"OK" button to select the "OK" box and
confirm or press the "Back" button to
cancel.
Choice of language
Once this menu has been selected, you can
choose the language used by the display from
a pre-defined list.
Display configuration
This menu gives access to the following
settings:
- "Choice of units",
- "Date and time adjustment",
- "Display parameters",
- "Brightness".
Adjusting the date and time
F Press the "7" or "8" button to display
the "Display configuration" menu, then
press "OK".
F Press the "5" or "6" button to select the
"Date and time adjustment" button, then
press "OK".
F Press the "7" or "8" button to select
the setting to modify. Confirm by
pressing "OK", then modify the setting and
confirm again to save the modification.
F Adjust the settings one by one, confirming
with the "OK" button.
F Press the "5" or "6" button, then the "OK"
button to select the "OK" box and confirm
or the "Back" button to cancel.
For safety reasons, configuration of the
multifunction screen by the driver must
only be done when stationary.