CITROËN DS5 Owner's Handbook Manual page 36

When the engine is running or the vehicle is being driven, illumination of one of the following warning lamps indicates a fault which requires action on
the part of the driver.
Any fault resulting in the illumination of a warning lamp must be investigated further by reading the associated message in the instrument panel screen.
If you encounter any problems, contact a CITROËN dealer or a qualified workshop.
Warning/indicator lamp State
STOP fixed, associated with
another warning lamp,
accompanied by an
audible signal and a
message in the screen.
Service on temporarily.
fixed.
(PEF: particle fixed, associated
temporarily with a
emissions filter,
message on the risk of
Diesel)
blockage of the PEF.
fixed.
Cause
It is associated with a punctured
wheel, the braking system, the power
steering, the engine oil pressure,
the engine coolant temperature or a
major electrical fault.
A minor fault has occurred for which
there is no specific warning lamp.
A major fault has occurred for which
there is no specific warning lamp.
This indicates the start of saturation
of the particle emissions filter.
This indicates the low level in the
Diesel additive reservoir.
Action/Observations
Stop as soon as it is safe to do so as the engine may
cut out.
Park, switch off the ignition and call a CITROËN
dealer or a qualified workshop.
Identify the fault by reading the message shown in the
screen, such as, for example:
- the closing of the doors, boot or bonnet,
- the engine oil level,
- the screenwash level,
- the remote control battery,
- the tyre pressures,
- saturation of the particle emission filter (Diesel).
- ...
For any other faults, contact a CITROËN dealer or a
qualified workshop.
Identify the fault by reading the message shown
on the screen and contact a CITROËN dealer or a
qualified workshop.
As soon as traffic conditions allow, regenerate the
filter by driving at a speed of at least 35 mph (60 km/h)
until the service warning lamp goes off.
Have the level topped up by a CITROËN dealer or a
qualified workshop as soon as possible.