CITROEN C4 Handbook page 184

In the event of a breakdown
repair of the tyre so that you can drive to the
nearest garage.
It is designed to repair most punctures located
on the tyre tread.
The vehicle's electric system allows the
connection of the compressor to the 12 V
power supply for long enough to repair a tyre
after a puncture.
For more information on the Tool kit,
refer to the corresponding section.
Tyre inflation pressures are indicated on
this label.
For more information on Identification
markings, particularly this label, refer to the
corresponding section.
Should the pressure of one or more tyres
be adjusted, it is necessary to reinitialise
the under-inflation detection system.
For more information on Tyre under-inflation
detection, refer to the corresponding section.
182
Repair procedure
Do not remove any foreign body
(e.g. nail, screw) which has penetrated
the tyre.
► Park the vehicle without obstructing traffic
and apply the parking brake.
► Follow the safety instructions (hazard
warning lamps, warning triangle, high visibility
jacket, etc.) according to the legislation in force
in the country in which you are driving.
► Switch the ignition off.
► Remove the transparent cap from the bottle
of sealant.
► Lift the protective cover before installing the
bottle of sealant on the compressor.
► Turn the bottle of sealant over and screw it a
quarter turn into the compressor.
► Remove the valve cap from the tyre to be
repaired, and place it in a clean place.
► Uncoil the pipe stowed under the compressor.
► Connect the pipe from the compressor to the
valve of the tyre to be repaired and tighten firmly.
► Check that the compressor switch is in
position "O".
► Fully uncoil the electric cable stowed under
the compressor.
► Connect the compressor's electric plug to the
vehicle's 12 V socket.
► Affix the speed limit sticker.
The speed limit sticker must be affixed
inside the vehicle in the area close to the
driver, to remind them that a wheel is in
temporary use.
► Switch the ignition on.