CITROËN DS 5 Handbook page 30

Warning / indicator lamp State
flashing.
Engine
autodiagnosis
system
fixed.
fixed with the two last
Low fuel level
bars flashing,
accompanied by a
message and an
audible signal.
fixed.
Under-inflation
flashing then fixed,
+
accompanied by the
Service warning lamp.
cause
The engine management system has
a fault.
The emission control system has
a fault.
When it first comes on there remains
approximately 6 litres of fuel in the
tank.
The pressure in one or more wheels
is too low.
The tyre pressure monitoring system
has a fault or no sensor is detected
on one of the wheels.
Action / Observations
Risk of destruction of the catalytic converter.
Have it checked by a CITROËN dealer or a qualified
workshop.
The warning lamp should go off when the engine is started.
If it does not go off, contact a CITROËN dealer or
qualified workshop without delay.
You must refuel as soon as possible to avoid running
out of fuel.
This warning lamp will come on every time the ignition
is switched on, accompanied by a message and an
audible signal, until a sufficient addition of fuel is
made.
This audible signal and message are repeated with
increasing frequency as the fuel level drops and
approaches "0".
Fuel tank capacity: approximately 60 litres.
Never continue to drive until you run out of fuel as
this could damage the emission control and injection
systems.
Check the pressure of the tyres as soon as possible.
This check should preferably be carried out when the
tyres are cold.
Under-inflation detection is not assured.
Have the system checked by a CITROËN dealer or a
qualified workshop.