CITROËN DS 5 Handbook page 122

deactivation / Reactivation
In certain circumstances, such as the need
to maintain the temperature in the passenger
compartment, it may be useful to deactivate the
Stop & Start system.
The system can be deactivated at any time,
once the ignition is switched on.
If the engine is in STOP mode, it then restarts.
The Stop & Start system is reactivated
automatically every time the ignition is switched
on.
Opening the bonnet
Before doing anything under the
bonnet, deactivate the Stop & Start
system to avoid the risk of injury related
to an automatic change to START
mode.
driving on flooded roads
Before driving through a flooded road,
it is strongly recommended that you
deactivate the Stop & Start system.
For more advice on driving, particularly
on flooded roads, refer to the
corresponding section.
With the switch on the dashboard
F Press this switch.
Deactivation is confirmed by the illumination of
the indicator lamp in the control switch and the
display of a message.
Pressing the switch again reactivates the
system.
The indicator lamp in the switch goes off,
accompanied by the display of a message.
With the touch screen button
F Select the "driving" menu.
F In the page, press this button.
Deactivation is confirmed by the illumination of
the indicator lamp for the button and the display
of a message.
Pressing the button again reactivates the
system.
The indicator lamp for the button goes off,
accompanied by the display of a message.