CITROEN DS4 Owner's Handbook Manual page 46

Warning lamp is on
Electric parking flashing.
brake
Electric fixed.
parking brake
malfunction
+
fixed if the speed is
below 6 mph (10 km/h).
fixed and accompanied
Door(s) open
by 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 application or release of the
electric parking brake was interrupted.
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 level ground, switch off the ignition and contact
a CITROËN dealer or a qualified workshop.
Automatic application/release is no longer possible.
Contact a CITROËN dealer or a qualified workshop
without delay.
The parking brake can be released manually using the
emergency release procedure.
For more information on the electric parking brake,
refer to the "Driving" 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.
* According to country.