2012 Citroen DS4 Owner's Manual

175
Safety
Automatic operation of
hazard warnin
g 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.)You can also switch them off by pressingthe button.






Horn
Audible warning system to alert other roadusers to an imminent danger. )
Press the central part of the mutlifunction steering wheel.
Use the horn moderately and only in the following circumstances: - immediate danger,- approaching a location lacking
visibility.









Emergency or
assistance call
This system allows you to make an emergency or assistance call to the emergency ser vices or
to the dedicated CITROËN ser vice.
F
or more information on the use of this
function, refer to the "Audio and telematics" section.

Ty r e u n d e r - i nfl ation detection
System which automatically and continuously checks the pressure of the tyres while driving.Sensors fitted in each valve trigger a warning
in the event of problem (speed above 12 mph(20 km/h)).

Puncture

The tyre under-inflation detectionsystem is an aid to driving which doesnot replace the need for the driver to bevigilant or to drive responsibly.


Under-infl ated tyre
This warning lamp is displayed on the
instrument panel and/or a message appears
in the screen, accompanied by an audible
si
gnal, to identify the wheel concerned.
The STOPwarning lamp comes on and/or this warning lamp is displayed on
the instrument panel, accompanied by
an audible signal and a message in the
screen identifying the wheel concerned.
)Stop as soon as it is safe to do so, avoiding any sudden movement of the steering
wheel and the brakes.)Repair or change the damaged wheel(punctured or very deflated tyre), and have
the tyre pressure checked as soon as possible.
) Check the tyre pressures as soon as possible.
This check must be carried out when the tyres
are cold.

177Safety

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 s
ystem.
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 aqualified 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 needto have the tyre pressures checkedregularly (refer to the "Identificationmarkings" section) to ensure that
the optimum dynamic performanceof the vehicle is maintained andprevent premature wear of the tyres, particularly 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 thatused by the system.

This message is also displayed when one of the wheels is away from the vehicle (being repaired) or when oneor 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 helpyou 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 surfaces.
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, pressvery firmly without releasing thepressure.


Operating fault
If this warning lamp comes on,
together with the STOPand ABSwarning 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 andrims), ensure that they conform to themanufacturer's recommendations.
If this warnin
g lamp comes on,
accompanied by an audible signaland a message in the screen, it
indicates a malfunction of the anti-lock brakingsystem which could result in loss of control of
the vehicle when braking.
In either case, contact a CITROËN dealer or a
qualified workshop.

179Safety
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 theresistance 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 automaticallyeach time the vehicle is started.
They come into operation in the event of a gripor trajectory problem.
This is indicated b
y flashing of this
warning lamp in the instrument panel.

Intelligent traction control
s
ystem ("Snow motion")
Your vehicle has a system to help driving on snow: intelligent traction control.
This system detects situations of difficult surface adhesion that could make it difficult to
move off or make progress on deep fresh snowor compacted snow.
In these situations, the intelligent tractioncontrol 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 surfaces offering low levels of adhesion.

Deactivation
In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow, on softground...), if you are unable to make progress,it may be advisable to temporarily deactivate
these systems, so that the wheels can spinfreely 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, butthis should not encourage the driver to take extra risks or drive at high speed.
The correct functioning of these systems is assured provided thatmanufacturer's recommendations areobserved 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.
I
f 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 aqualified workshop.
It is recommended that the systems bereactivated as soon as possible.
If this warnin
g lamp comes on in the instrumentpanel and the indicator lamp in the buttoncomes on, this indicates that these systems aredeactivated.

Safety
Seat belts


Front seat belts


The front seat belts are fitted with apretensioning and force limiting system.
This system improves safety in the frontseats in the event of a front or side impact.
Dependin
g on the severity of the impact, thepretensioning 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 fastenedcorrectly 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 increasingvolume. 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 thecontrol Aand slide it downwards. )
To raise the attachment point, slide the control Aupwards.

Rear seat belts

Fastening
)Pull the strap, then inser t the tongue in thebuckle.)Check that the seat belt is fastenedcorrectly 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 lampsdisplay
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.