2016 Citroen DS4 ECU

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Automatic operation of
hazard warning lamps
When braking in an emergency, depending on
the deceleration, the hazard warning lamps
come on automatically.
They switch off automatically the first time you
accelerate.
F
Y
ou can also switch them off by pressing
the button.
Horn
Audible warning system to alert other road
users to an imminent danger.
F

P
ress the central part of the multifunction
steering wheel.
Use the horn moderately and only in
the circumstances allowed by the traffic
regulations in the country in which you
are driving.
Emergency or
assistance call
This system allows you to make an emergency
or assistance call to the emergency services
or to the dedicated service (operated by
CITROËN Assistance).
For more information on the use of this
function, refer to the "Audio and telematics"
section.
Safety

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Emergency braking assistance
System which, in an emergency, enables you
to obtain the optimum braking pressure more
quickly, thus reducing the stopping distance.
Activation
It is triggered by the speed at which the brake
pedal is pressed.
The effect of this is a reduction in the
resistance of the pedal and an increase in
braking efficiency.When braking in an emergency, press
firmly without releasing the pressure.
Trajectory control systems
Anti-slip regulation (ASR)
and dynamic stability
control (
d
SC)
The anti-slip regulation (also known as traction
control) optimises traction to prevent skidding
of the wheels, by acting on the brakes of the
driving wheels and on the engine.
The electronic stability control acts on the brake
of one or more wheels and on the engine to
keep the vehicle on the trajectory required by
the driver, within the limits of the laws of physics.
Activation
These systems are activated automatically
each time the vehicle is started.
They come into operation in the event of a grip
or trajectory problem.
This is indicated by flashing of this
warning lamp in the instrument panel.
Intelligent traction control
system ("Snow motion")
Depending on version, your vehicle has a
system to help driving on snow: intelligent
traction control .
This system detects situations of difficult
sur face adhesion that could make it difficult to
move off or make progress on deep fresh snow
or compacted snow.
In these situations, the intelligent traction
control limits the amount of wheel slip to
provide the best traction and trajectory control
for your vehicle.
The use of snow tyres is strongly
recommended on sur faces offering low
levels of adhesion.
Safety

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Seat belts
Front seat belts
The front seat belts are fitted with a
pretensioning and force limiting system.
This system improves safety in the front
seats in the event of a front or side impact.
Depending on the severity of the impact, the
pretensioning system instantly tightens the seat
belts against the body of the occupants.
The pretensioning seat belts are active when
the ignition is on.
The force limiter reduces the pressure of the
seat belt on the chest of the occupant,
so improving their protection.
Fastening
F Pull the strap, then insert the tongue in the buckle.
F

C
heck that the seat belt is fastened
correctly by pulling the strap.
Unfastening
F Press the red button on the buckle.
F G uide the seat belt as it reels in.
Seat belt not fastened /
unfastened warning lamp in
the


instrument panel
When the ignition is switched on, this
warning lamp comes on in the instrument
panel if the driver and/or the front
passenger has not fastened their seat belt.
Height adjustment
F To lower the attachment point, squeeze the control A and slide it downwards.
F

T
o raise the attachment point, slide the
control A upwards.
From approximately 12 mph (20 km/h)
this warning lamp flashes for two minutes
accompanied by an audible signal of increasing
volume. Once these two minutes have elapsed,
this warning lamp remains on until the driver
and/or the front passenger fastens their seat
belt.
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Seat belt unfastened warning
lamp in the instrument panel
This warning lamp comes on in the
instrument panel when one or more rear
passengers unfasten their seat belt.
Seat belt unfastened warning
lamps display
3. Right hand rear seat belt warning lamp.
4. Centre rear seat belt warning lamp.
5.
L

eft hand rear seat belt warning lamp.
When the ignition is switched on, with the
engine running or when the vehicle is moving at
less than 12 mph (20 km/h), the corresponding
warning lamps 3, 4 and 5 come on in red for
approximately 30 seconds, if the seat belt is not
fastened.
When the vehicle is moving at more than 12 mph
(20 km/h), the corresponding warning lamps
3,
4 and 5 come on in red, accompanied by an
audible signal and a message in the screen, if a
rear passenger has unfastened their seat belt.
From approximately 12 mph (20 km/h),
this warning lamp flashes for two minutes
accompanied by an audible signal of increasing
volume. Once these two minutes have elapsed,
this warning lamp remains on until the one or
more rear passengers fasten their seat belt.
Safety

The driver must ensure that passengers use
the seat belts correctly and that they are all
restrained securely before setting off.
Wherever you are seated in the vehicle,
always fasten your seat belt, even for short
journeys.
Do not interchange the seat belt buckles as
they will not fulfil their role fully.
The seat belts are fitted with an inertia reel
permitting automatic adjustment of the length
of the strap to your size. The seat belt is
stowed automatically when not in use.
Before and after use, ensure that the seat
belt is reeled in correctly.
The lower part of the strap must be
positioned as low as possible on the pelvis.
The upper part must be positioned in the
hollow of the shoulder.
The inertia reels are fitted with an automatic
locking device which comes into operation in
the event of a collision, emergency braking
or if the vehicle rolls over. You can release
the device by pulling the strap firmly and then
releasing it so that it reels in slightly.Recommendations for
children
Use a suitable child seat if the passenger is
less than 12 years old or shorter than one
and a half metres.
Never use the same seat belt to secure
more than one person.
Never allow a child to travel on your lap.
For more information, refer to the "Child
seats" section.
Advice
In order to be effective, a seat belt must:
- b e tightened as close to the body as
possible,
-

b
e pulled in front of you with a smooth
movement, checking that it does not
twist,
-

b
e used to restrain only one person,
-

n
ot bear any trace of cuts or fraying,
-

n
ot be converted or modified to avoid
affecting its performance.
In accordance with current safety regulations,
for all repairs on your vehicle's seat belts, go
to a qualified workshop with the skills and
equipment needed, which a CITROËN dealer
is able to provide.
Have your seat belts checked regularly by
a CITROËN dealer or a qualified workshop,
particularly if the straps show signs of
damage.
Clean the seat belt straps with soapy water or
a textile cleaning product, sold by CITROËN
dealers.
After folding or moving a seat or rear bench
seat, ensure that the seat belt is positioned
and reeled in correctly.
In the event of an impact
depending on the nature and
seriousness of the impact , the
pretensioning device may be deployed
before and independently of the airbags.
Deployment of the pretensioners is
accompanied by a slight discharge of
harmless smoke and a noise, due to the
activation of the pyrotechnic cartridge
incorporated in the system.
In all cases, the airbag warning lamp
comes on.
Following an impact, have the seat belts
system checked, and if necessary replaced,
by a CITROËN dealer or a qualified
workshop.

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Airbags
General information
System designed to contribute towards
improving the safety of the occupants (with
the exception of the rear centre passenger)
in the event of violent collisions. The airbags
supplement the action of the seat belts fitted
with force limiters (all except the centre rear
passenger belt).
If a collision occurs, the electronic detectors
record and analyse the front and side impacts
sustained in the impact detection zones:
-
i
n the case of a serious impact, the airbags
are deployed instantly and contribute
towards better protection of the occupants
of the vehicle (with the exception of the
rear centre passenger); immediately after
the impact, the airbags deflate rapidly so
that they do not hinder visibility or the exit
of the occupants,
-

i
n the case of a minor or rear impact or in
certain roll-over conditions, the airbags
may not be deployed; the seat belt
alone contributes towards ensuring your
protection in these situations. The airbags do not operate when the
ignition is switched off.
This equipment will only deploy once.
If a second impact occurs (during the
same or a subsequent accident), the
airbag will not be deployed again.
Impact detection zones
A. Front impact zone.
B. S
ide impact zone.
Deployment of one or more of the
airbags is accompanied by a slight
emission of smoke and a noise, due
to the activation of the pyrotechnic
cartridge incorporated in the system.
This smoke is not harmful, but sensitive
individuals may experience slight
irritation.
The noise of detonation related to the
deployment of one or more airbags
may result in a slight loss of hearing for
a short time.
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deactivation
Only the passenger's front airbag can be
deactivated:
F
i
nsert the key in the passenger airbag
deactivation switch,
F

t
urn it to the "OFF" position,
F

t
hen, remove the key keeping the switch in
the new position.
According to version, this warning
lamp comes on in the instrument
panel and/or in the seat belt and
passenger's front airbag warning
lamps display when the ignition is on
and until the airbag is reactivated. To assure the safety of your child,
the passenger's front airbag must be
deactivated when you install a rear ward
facing child seat on the front passenger
seat.
Other wise, the child would risk being
seriously injured or killed if the airbag
were deployed.
Reactivation
When you remove the child seat, turn the
switch to the "ON"
position to reactivate the
airbag and so assure the safety of your front
passenger in the event of an impact.
With the ignition on, this warning
lamp comes on in the seat belt and
passenger's front airbag warning
lamps display for approximately
one minute, if the passenger's front
airbag is activated.
Operating fault
If this warning lamp comes on in
the instrument panel, contact a
CITROËN dealer or a qualified
workshop to have the system
checked. The airbags may no longer
be deployed in the event of a serious
impact.
Safety

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Curtain airbags
System which contributes towards improving the
protection of the driver and passengers (with the
exception of the rear centre passenger) in the
event of a serious side impact in order to limit
the risk of injury to the side of the head.
Each curtain airbag is built into the pillars and
the upper passenger compartment area.
deployment
The curtain airbag is deployed at the same
time as the corresponding lateral airbag in the
event of a serious side impact applied to all or
part of the side impact zone B, perpendicular
to the longitudinal centreline of the vehicle on a
horizontal plane and directed from the outside
towards the inside of the vehicle.
The curtain airbag inflates between the front or
rear occupant of the vehicle and the windows.
Safety