Under-inflation detection
System which automatically checks the pressures of the tyres while driving.
T he under-inflation detection system
d
oes not replace the need for vigilance
o
n the part of the driver.
This
system does not avoid the need to
c
heck the tyre pressures (including the
s
pare wheel) every month as well as
b
efore a long journey.
Driving
with under-inflated tyres
i
mpairs road holding, extends braking
d
istances and causes premature
t
yre wear, particularly under arduous
condition
(high loading, high speed,
lon
g
jo
urney).The inflation pressures defined for
your vehicle can be found on the tyre
pressure
label.
See
the "Identification markings"
s
ection.
Tyre
pressures should be checked
w
hen the tyres are "cold" (vehicle
s
topped for 1 hour or after a journey of
l
ess than 6 miles (10 km) at moderate
s
peeds).
Other wise
(when hot), add 0.3 bar to
t
he pressures shown on the label.
Driving
with under-inflated tyres
i
ncreases fuel consumption.
The
system monitors the pressures in the four
t
yres, once the vehicle is moving.
It
compares the information given by the four
w
heel speed sensors with reference values,
which must be reinitialised ever y time the
tyre pressures are adjusted or a wheel
changed .
The
system triggers an alert as soon as it
d
etects a drop in the inflation pressure of one
or
more tyres.
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DS3_en_Chap06_securite_ed01-2015
The alert is maintained until the system is r einitialised.
The loss of pressure detected does not
always
cause
visible
bulging
of
the
tyre.
D
o
not
satisfy
yourself
with
just
a
visual
c
heck. Before
reinitialising the system, ensure
t
hat the pressures of the four tyres are
correct for the use of the vehicle, as
given
on the tyre pressure label.
The
under-inflation detection system
d
oes not give a warning if a pressure is
i
ncorrect at the time of reinitialisation.
Under-inflation alert
This is given by fixed illumination of this warning lamp, accompanied by
a
n audible signal and the display of a
m
essage.
F
R
educe speed immediately, avoid
e
xcessive steering movements and sudden
b
raking
F
S
top
the vehicle as soon as it is safe to do so.F
I f you have a compressor (such as the one
i
n the temporary puncture repair kit), check
t
he pressures of the four tyres when cold.
I
f it is not possible to carry out this check
s
traight away, drive carefully at reduced
s
peed.
or
F
I
n the event of a puncture, use the
temporary
puncture repair kit or the spare
w
heel (depending on equipment).
Reinitialisation
It is necessary to reinitialise the system every time one or more tyre pressure is adjusted, and
a
fter changing one or more wheels.
A
label on the middle pillar, left hand side, gives
a
reminder of this.
Safety
Braking assistance systems
Group of supplementary systems which help you to obtain optimum braking in complete
s
afety in emergency situations:
-
a
nti-lock braking system (ABS),
-
e
lectronic brake force distribution (EBFD),
-
e
mergency 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,
i
n particular on poor or slippery sur faces.
Activation
The anti-lock braking system comes into operation automatically when there is a risk of
w
heel lock.
Normal
operation of the ABS may make itself
f
elt by slight vibration of the brake pedal.
When
braking in an emergency, press
v
ery firmly without releasing the
p
ressure.
Operating fault
If this warning lamp comes on, together with the STOP and ABS
warning
lamps, accompanied by an
a
udible
signal and a message in the screen, it
i
ndicates
a malfunction of the electronic brake
f
orce 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
r
ims), ensure that they conform to the
ma
nufacturer's
r
ecommendations.
If
this warning lamp comes on,
a
ccompanied by an audible signal
a
nd a message in the screen, it
i
ndicates
a malfunction of the anti-lock braking
s
ystem
which could result in loss of control of
t
he
vehicle when braking.
In either case, contact a CITROËN dealer or a
qualified
w
orkshop.
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DS3_en_Chap06_securite_ed01-2015
Emergency braking assistance
System which, in an emergency, enables you to obtain the optimum braking pressure more
q
uickly, 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
e
fficiency.
When
braking in an emergency, press
f
irmly 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
o
f the wheels, by acting on the brakes of the
d
riving wheels and on the engine.
The electronic stability control acts on the
brake
of one or more wheels and on the engine
t
o keep the vehicle on the trajectory required
b
y the driver, within the limits of the laws of
p
hysics.Activation
These systems are activated automatically each time the vehicle is started.
They
come into operation in the event of a grip
o
r
t
rajectory
pro
blem.
This
is indicated by flashing of this
w
arning lamp in the instrument panel.
Safety
deactivation
In extremely severe conditions (deep snow, mud...), when it is not possible to move off, it
m
ay be useful to temporarily deactivate the
s
ystems, so that the wheels can spin freely and
r
egain grip.
F
P
ress this button, located on the left below
the
steering wheel.
Illumination
of the lamp in the button indicates
t
hat the systems are deactivated.
Reactivation
These systems are reactivated automatically each time the ignition is switched back on
o
r from 30 mph (50 km/h) except 1.6 litre
(
THP 150, THP 155 and THP 160) and
R
ACING petrol engines.
F
P
ress this button again to reactivate them
m
anually.
Operating fault
The DSC/ASR systems offer exceptional s afety i n n ormal d riving, b ut
t
his should not encourage the driver to
t
ake extra risks or drive at high speed.
The
correct functioning of these
s
ystems depends on observation of the
ma
nufacturer's
r
ecommendations
o
n:
-
w
heels (tyres and rims),
-
b
raking components,
-
el
ectronic
c
omponents,
-
a
ssembly and repair procedures.
After
an impact, have these systems
c
hecked by a CITROËN dealer or a
q
ualified
w
orkshop.
Illumination
of this warning lamp in the
i
nstrument panel and the lamp in the
b
utton, accompanied by an audible
s
ignal and a message, this indicates a
m
alfunction of these systems.
Have
it checked by a CITROËN dealer or a
q
ualified
w
orkshop.
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DS3_en_Chap06_securite_ed01-2015
Operating limits
The system only detects vehicles that are stationary or moving in the same direction as
y
our vehicle.
It
does not detect small vehicles
(
bicycles, motorcycles), pedestrians or
a
nimals, nor non-reflective stationary
ob
jects.
The
system is not triggered or is interrupted if
t
he
d
river:
-
a
ccelerates strongly
-
o
r turns the steering wheel suddenly
(
avoiding
m
anoeuvre).With the monochrome screen C
F Press the MEn U button for access to the
main menu.
F
Sel
ect "Personalisation-Configuration ".
F
Sel
ect "
def
ine vehicle parameters ".
F
Sel
ect "
dr
iving assistance ".
F
Sel
ect "Automatic emergency braking:
OFF " or " Automatic emergency braking :
O
n".
F
P
ress the " 7" or " 8"
button to check or
u
ncheck the box and activate or deactivate
t
he system respectively.
F
P
ress the " 5" or " 6" button, then the OK
button to select the "OK"
box and confirm
o
r the Back
button to cancel.
With the touch screen tablet
F Press the "MEnU" button.
F Sel ect the "dr iving"
menu.
F
I
n the secondary page, select "Vehicle
settings ".
F
Sel
ect "
dr
iving assistance "
tab.
F
C
heck or uncheck the "Automatic
emergency braking "
box to activate or
d
eactivate the system.
F
C
onfirm.
Safety
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Front airbags
System which protects the driver and front passenger in the event of a serious front impact
i
n order to limit the risk of injury to the head and
c
hest.
The
driver's airbag is fitted in the centre of the
s
teering wheel; the front passenger's airbag is
f
itted in the dashboard above the glove box.deployment
The airbags are deployed, except the passenger's front airbag if it is deactivated,
i
n the event of a serious front impact applied
t
o all or part of the front impact zone A, in
the
longitudinal centreline of the vehicle on a
h
orizontal plane and directed from the front to
t
he rear of the vehicle.
The
front airbag inflates between the head-
thorax
of the front occupant of the vehicle
an
d the dashboard to cushion their forward
movement.
Safety
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DS3_en_Chap06_securite_ed01-2015
For the airbags to be fully effective, observe the following safety rules:Front airbags
Do not drive holding the steering wheel by its spokes or resting your hands on the centre
p
art of the wheel.
Passengers
must not place their feet on the
das
hboard.
Do
not smoke as deployment of the airbags
c
an cause burns or the risk of injury from a
c
igarette or pipe.
Never
remove or pierce the steering wheel or
h
it it violently.
Do
not fit or attach anything to the steering
w
heel or dashboard, this could cause injuries
w
ith deployment of the airbags.
Lateral airbags
Use only approved covers on the seats,
compatible with the deployment the lateral
a
irbags. For information on the range of seat
c
overs suitable for your vehicle, you can
contact
a CITROËN dealer.
Refer
to the "Accessories" section.
Do
not fix or attach anything to the seat
b
acks (clothing...). This could cause injury
t
o the chest or arms if the lateral airbag is
d
eployed.
Do not sit with the upper part of the body any
nearer
to the door than necessary.
Curtain airbags
Do not fix or attach anything to the roof. This could cause injury to the head if the
c
urtain airbag is deployed.
If
fitted on your vehicle, do not remove the
g
rab handles installed on the roof, they play
a
part in securing the curtain airbags.
Sit
in
a
normal
upright
position.
Wear
a
correctly
adjusted
seat
belt.
Do
n
ot
l
eave
a
nything
b
etween
t
he
o
ccupants
a
nd
the
airbags
(a
child,
pet,
object...).
This
c
ould
hamper
the
operation
of
the
airbags
or
i
njure
the
occupants.
After an accident or if the vehicle has been
stolen
or
broken
into,
have
the
airbag
s
ystems
checked.
All
work
on
the
airbag
system
must
be
c
arried out by a CITROËN dealer or a
qualified
w
orkshop.
Even
if
all
of
the
precautions
mentioned
a
re
observed,
a
risk
of
injury
or
of
minor
b
urns
to
the
head,
chest
or
arms
when
an
a
irbag
is
deployed
cannot
be
ruled
out.
The
b
ag
inflates
almost
instantly
(within
a
few
m
illiseconds)
then
deflates
within
the
same
t
ime
discharging
the
hot
gas
via
openings
p
rovided
for
this
purpose.
Safety