CITROËN DS 4 Handbook page 26

Warning/indicator lamp is on
flashing.
Electric parking
brake
fixed.
Electric parking
brake fault
fixed, associated with
door(s) open
a message identifying
the door, if the speed is
below 6 mph (10 km/h).
fixed, associated with a
message identifying the
door, together with an
audible signal if the speed
is above 6 mph (10 km/h).
fixed, then flashing,
Seat belt not
accompanied by an
fastened /
increasing audible
unfastened*
signal.
Cause
The electric parking brake is not
applied automatically.
The application/release is faulty.
The electric parking brake has a fault.
A door or the boot is still open.
The driver or front passenger has not
buckled or has unbuckled their seat
belt.
At least one rear passenger has
unbuckled their seat belt.
Action/Observations
You must stop as soon as it is safe to do so.
Park on flat level ground, engage a gear (or place the
lever in position P for an automatic gearbox), switch
off the ignition and contact a CITROËN dealer or a
qualified workshop.
Contact a CITROËN dealer or a qualified workshop
without delay.
For more information on the electric parking brake,
refer to the corresponding section.
Close the door or boot.
Pull on the belt in question and insert the tongue in the
buckle.
This warning repeats the seat belt information given by
the roof console warning lamps.
* Depending on country of sale.