CITROËN DS5 Owner's Handbook Manual page 171

Dynamic stability control (DSC)
Activation
This system is activated automatically each
time the vehicle is started.
It comes into operation in the event of a grip or
trajectory problem.
This is indicated by flashing of this
warning lamp in the instrument panel.
Deactivation
In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow, on soft
ground...), it may be advisable to deactivate
the DSC system, so that the wheels can move
freely and regain grip.
But it is recommended that the system be
reactivated as soon as possible.
Press the button.
This warning lamp and the indicator
lamp in the button come on:
the DSC system no longer acts on
the operation of the engine.
Reactivation
The system is reactivated automatically each
time the ignition is switched back on or from
30 mph (50 km/h).
Press the button again to
reactivate it manually.
Operating fault
If this warning lamp comes on,
accompanied by an audible signal
and a message in the instrument
panel screen, this indicates a fault
with the system.
Contact a CITROËN dealer or a qualified
workshop to have the system checked.
The DSC system offers exceptional
safety in normal driving, but this should
not encourage the driver to take extra
risks or drive at high speed.
The correct operation of the system
depends on observation of the
manufacturer's recommendations
regarding the wheels (tyres and rims),
the braking components, the electronic
components and the CITROËN
assembly and operation procedures.
After an impact, have the system
checked by a CITROËN dealer or a
qualified workshop.
Safety