CITROËN C4 PICASSO Handbook page 204

Driving
Reinitialisation of the system is done in the
touch screen tablet, with the ignition on and the
vehicle stationary.
F In the Driving menu, select the "Driving
assistance" tab then "Under-inflation
initialisation".
F Confirm the instruction by pressing "Yes",
an audible signal and a message confirm
the reinitialisation.
The new pressure settings registered are
considered to be reference values by the
system.
The under-inflation alert can only be
relied on if reinitialisation of the system
is done with the four tyre pressures
correctly set.
202
Operating fault
The flashing and then fixed illumination of the
under-inflation warning lamp accompanied
by illumination of the Service warning lamp
indicates a fault with the system.
A message appears, accompanied by an
audible signal.
In this case, under-inflation monitoring of the
tyres is no longer assured.
Have the system checked by a CITROËN
dealer or a qualified workshop.
Before doing anything to the system,
the pressures of the four tyres must be
checked and the system reinitialised.