2011 Citroen DS4 Owner's Manual

175
Safety

Sensor(s) not detected or faulty

A message appears in the screen,
accompanied by an audible signal, to identify
the wheel or wheels which are not detected or
to indicate a malfunction in the system.
Contact a CITROËN dealer or a qualified
workshop to replace the faulty sensor(s). All repairs and changing of tyres on a
wheel fitted with this system must be
carried out by a CITROËN dealer or a
qualified workshop.
If, when changing a tyre, you install a
wheel which is not detected by your
vehicle (example: fitting of snow tyres),
you must have the system reinitialised
by a CITROËN dealer or a qualified
workshop. This system does not avoid the need
to have the tyre pressures checked
regularly (refer to the "Identification
markings" section) to ensure that
the optimum dynamic per formance
of the vehicle is maintained and
prevent premature wear of the
tyres, par ticularly in arduous driving
conditions (heavy load, high speed).
The tyre pressures must be checked
cold, at least once a month. Remember
to check the pressure of the spare
wheel.
The tyre under-inflation detection
system may experience temporary
inter ference due to electro-magnetic
emissions on a frequency close to that
used by the system.
This message is also displayed when
one of the wheels is away from the
vehicle (being repaired) or when one
or more wheels without a sensor are
fitted.
If your vehicle is equipped with a spare
wheel, this is not fitted with a sensor.

Braking assistance systems

Group of supplementary systems which help
you to obtain optimum braking in complete
safety in emergency situations:


- anti-lock braking system (ABS),

- electronic brake force distribution (EBFD),

- emergency braking assistance (EBA).

Anti-lock braking system
and electronic brake force
distribution
Linked systems which improve the stability and
manoeuvrability of your vehicle when braking,
in par ticular on poor or slippery sur faces.

Activation

The anti-lock braking system comes into
operation automatically when there is a risk of
wheel lock.
Normal operation of the ABS may make itself
felt by slight vibration of the brake pedal.

When braking in an emergency, press
very firmly without releasing the
pressure.


Operating fault

If this warning lamp comes on,
together with the STOP
and ABS

warning lamps, accompanied by an
audible signal and a message in the screen, it
indicates a malfunction of the electronic brake
force distribution which could result in loss of
control of the vehicle when braking.

You must stop as soon as it is safe to do so.


When replacing wheels (tyres and
rims), ensure that they conform to the
manufacturer's recommendations.
If this warning lamp comes on,
accompanied by an audible signal
and a message in the screen, it
indicates a malfunction of the anti-lock braking
system which could result in loss of control of
the vehicle when braking.
In either case, contact a CITROËN dealer or a
qualified workshop.

177
Safety









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 (ESP)


Anti-slip regulation (ASR)
and electronic stability
control (ESC)

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 star ted.
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")
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.

Deactivation

In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow, on soft
ground...), if you are unable to make progress,
it may be advisable to temporarily deactivate
these systems, so that the wheels can spin
freely and allow the vehicle to move.


)
Press the "ESP OFF"
button,
located near the steering wheel.


Reactivation

These systems are reactivated automatically
each time the ignition is switched back on or
from 30 mph (50 km/h).


)
Press the "ESP OFF"
button again to
reactivate them manually.



Operating fault

The trajectory control systems offer
increased safety in normal driving, but
this should not encourage the driver to
take extra risks or drive at high speed.
The correct functioning of these
systems is assured provided that
manufacturer's recommendations are
observed on:


- wheels (tyres and rims),

- braking components,

- electronic components,

- assembly and repair procedures.
After an impact, have these systems
checked by a CITROËN dealer or a
qualified workshop.
If this warning lamp comes on,
accompanied by an audible signal
and a message in the screen, this
indicates a fault with these systems.
Have it checked by a CITROËN dealer or a
qualified workshop. It is recommended that the systems be
reactivated as soon as possible.
If this warning lamp comes on in the instrument
panel and the indicator lamp in the button
comes on, this indicates that these systems are
deactivated.

179
Safety
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



)
Pull the strap, then inser t the tongue in the
buckle.

)
Check that the seat belt is fastened
correctly by pulling the strap.



Unfastening



)
Press the red button on the buckle.

)
Guide 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.
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.


Height adjustment



)
To lower the attachment point, squeeze the
control A
and slide it downwards.

)
To raise the attachment point, slide the
control A
upwards.

Rear seat belts


Fastening



)
Pull the strap, then inser t the tongue in the
buckle.

)
Check that the seat belt is fastened
correctly by pulling the strap.



Unfastening



)
Press the red button on the buckle.

)
Guide the seat belt as it reels in.

)
On the outer seat belts, raise the bar to the
top of the backrest to prevent the tongue
from knocking against the side trim.
The rear seats are each fitted with a three-point
seat belt, with force limiter and, for the outer
seats, an effort limiter.

Seat belt not fastened/
unfastened warning lamps
display


1.
Driver's seat belt not fastened/unfastened
warning lamp.

2.
Front passenger's seat belt not fastened/
unfastened warning lamp.
The corresponding warning lamp 1
or 2
comes
on in red on the seat belt and passenger's front
airbag warning lamps display, accompanied by
an audible signal and a message in the screen,
if the seat belt is not fastened or is unfastened.

181
Safety

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.
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.


Seat belt unfastened warning
lamps display

3.
Rear right seat belt warning lamp.

4.
Rear centre seat belt warning lamp.

5.
Rear left 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.

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 iner tia 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 par t must be positioned in the
hollow of the shoulder.
The iner tia 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 firmly on the strap and
releasing it so that it reels in slightly. In order to be effective, a seat belt must:


- be tightened as close to the body as
possible,

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

- be used to restrain only one person,

- not bear any trace of cuts or fraying,

- not be conver ted or modified to avoid
affecting its per formance.
In accordance with current safety regulations,
for all repairs on your vehicle, 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,
par ticularly 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.

Recommendations for children

Use a suitable child seat if the passenger is
less than 12 years old or shor ter 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.


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 car tridge
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.