CITROËN DS 4 Handbook page 28

Warning/indicator lamp is on
flashing.
Engine
autodiagnosis
system
fixed.
fixed, accompanied by
Low fuel level
and audible signal and
a message.
fixed.
Anti-lock Braking
System (ABS)
flashing.
dynamic stability
control
(dSC/ASR)
fixed, associated with
illumination of the
indicator lamp in the
deactivation button,
accompanied by an
audible signal and a
message.
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.
At this point, you begin to use the fuel
reserve.
The anti-lock braking system has
a fault.
Regulation by the system is active.
The DSC/ASR or hill start assist
system has a fault.
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.
Refuel as soon as possible to avoid running out of fuel.
Until sufficient fuel is added, this warning lamp will
come on every time the ignition is switched on,
accompanied by an audible signal and a message.
This audible signal and message are repeated
with increasing frequency as the fuel level drops
towards "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.
The vehicle retains conventional braking.
Drive carefully at reduced speed and contact a
CITROËN dealer or a qualified workshop without delay.
The system optimises traction and improves the
directional stability of the vehicle.
Have it checked by a CITROËN dealer or a qualified
workshop.