2018 CITROEN C4 ECU

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Airbags
General information
System designed to contribute towards improving   the   safety   of   the   occupants   (with  
t

he   exception   of   the   rear   centre   passenger)  
i

n   the   event   of   violent   collisions.   The   airbags  
s

upplement   the   action   of   the   seat   belts   fitted  
w

ith   force   limiters   (all   except   the   centre   rear  
p

assenger
 b
elt).
If a collision occurs, the electronic detectors
record
  and   analyse   the   front   and   side   impacts  
s

ustained   in   the   impact   detection   zones:
-
 
i
n   the   case   of   a   serious   impact,   the   airbags  
a

re deployed instantly and contribute
towards better protection of the occupants
of
  the   vehicle   (with   the   exception   of   the  
r

ear   centre   passenger);   immediately   after  
t

he   impact,   the   airbags   deflate   rapidly   so  
t

hat   they   do   not   hinder   visibility   or   the   exit  
o

f the occupants,
-
 
i
n   the   case   of   a   minor   or   rear   impact   or   in  
c

ertain   roll-over   conditions,   the   airbags  
m

ay   not   be   deployed;   the   seat   belt  
a

lone   contributes   towards   ensuring   your  
p

rotection   in   these   situations. The airbags do not operate when the
ignition is switched off.
This
  equipment   will   only   deploy   once.  
I

f   a   second   impact   occurs   (during   the  
s

ame   or   a   subsequent   accident),   the  
a

irbag   will   not   be   deployed   again.Deployment
  of   one   or   more   of   the  
a

irbags   is   accompanied   by   a   slight  
e

mission   of   smoke   and   a   noise,   due  
t

o the activation of the pyrotechnic
cartridge
  incorporated   in   the   system.
This
  smoke   is   not   harmful,   but   sensitive  
i

ndividuals   may   experience   slight  
ir

ritation.
The noise of detonation related to the
deployment
  of   one   or   more   airbags   may  
r

esult   in   a   slight   loss   of   hearing   for   a  
s

hort   time.
Impact detection zones
A. Front  impact   zone.
B. S ide   impact   zone.
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Deactivating the passenger's
front airbag
Only the passenger's front airbag can be deactivated.
F

W
ith the ignition off ,
  insert   the   key   in   the  
p

assenger   airbag   deactivation   switch.
F

T
urn it to the "OFF"
 p
osition.
F
 
R
emove   the   key   keeping   the   switch   in   the  
n

ew   position.When
  the   ignition   is   on,   this   warning  
l

amp   comes   in   the   seat   belt   warning  
l

amps   display   screen.   It   stays   on  
w

hile   the   airbag   is   deactivated. To assure the safety of your child,
the
  passenger's   front   airbag   must   be  
d

eactivated when you install a rear ward
facing   child   seat   on   the   front   passenger  
sea

t.
Other wise,   the   child   would   risk   being  
s

eriously   injured   or   killed   if   the   airbag  
w

ere   deployed.
Reactivating the passenger's
front airbag
When you remove a rearward facing
c hild
seat, with the ignition off , turn the switch to
the "ON"
 

position   to   reactivate   the   airbag   and  
s

o   assure   the   safety   of   your   front   passenger   in  
t

he   event   of   an   impact.
Front airbags
Deployment
The airbags are deployed, except the passenger's   front   airbag   if   it   is   deactivated,   in   the e

vent   of   a   serious   front   impact   to   all   or   part   of   the
 f

ront   impact   zone   A,
  in   the   longitudinal   centreline
 o

f the vehicle on a horizontal plane and directed
from
  the   front   to   the   rear   of   the   vehicle.
The
  front   airbag   inflates   between   the   thorax   and
 h

ead of the front occupant of the vehicle and the
steering
  wheel,   driver's   side,   and   the   dashboard,
 p

assenger's   side   to   cushion   their   for ward
 m

ovement.
System
  which   protects   the   driver   and   front  
p

assenger   in   the   event   of   a   serious   front   impact  
i

n   order   to   limit   the   risk   of   injury   to   the   head   and  
t

horax.
The   driver's   airbag   is   fitted   in   the   centre   of   the  
s

teering   wheel;   the   front   passenger's   airbag  
i

s   fitted   in   the   roof   to   allow   more   space   in   the  
g

love   box.
When   the   ignition   is   switched   on,   this  
w

arning   lamp   comes   on   in   the   seat  
b

elt   warning   lamps   display   screen   for  
a

pproximately   one   minute   to   signal  
t

hat   the   front   airbag   is   activated.
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Lateral airbags
Deployment
A lateral airbag is deployed unilaterally in the event   of   a   serious   side   impact   applied   to   all   or  
p

art   of   the   side   impact   zone   B, perpendicular
to
  the   longitudinal   centreline   of   the   vehicle   on   a  
h

orizontal   plane   and   directed   from   the   outside  
t

owards   the   inside   of   the   vehicle.
The
  lateral   airbag   inflates   between   the   hip   and  
s

houlder of the front occupant of the vehicle
and
  the   corresponding   door   trim   panel.
System
  which   protects   the   driver   and   front  
p

assenger   in   the   event   of   a   serious   side   impact  
i

n   order   to   limit   the   risk   of   injury   to   the   chest,  
b

etween   the   hip   and   the   shoulder.
Each   lateral   airbag   is   fitted   in   the   seat   backrest  
f

rame,   door   side.
Impact detection zones
A. Front
  impact   zone.
B. S ide   impact   zone.
Operating fault
If this warning lamp comes on in the instrument   panel,   you   must   contact  
a

  CITROËN   dealer   or   a   qualified  
w

orkshop   without   delay   to   have   the  
s

ystem   checked.   The   airbags   may   no  
l

onger   be   deployed   in   the   event   of   a  
s

erious
 im
pact.
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In the event of a minor impact or bump on the side of the vehicle or if the
vehicle
  rolls   over,   the   airbags   may   not  
b

e   deployed.
In the event of a rear or front collision,
none
  of   the   lateral   airbags   is   deployed.
System
 
contributing
 
towards
 
greater
 
protection
 
f

or
 
the
 
the
 
driver
 
and
 
passengers
 
(with
 
the
 
e

xception
 
of
 
the
 
rear
 
centre
 
passenger)
 
in
 
the
 
e

vent
 
of
 
a
 
serious
 
side
 
impact
 
in
 
order
 
to
 
limit
 
t

he
 
risk
 
of
 
injury
 
to
 
the
 
side
 
of
 
the
 
head.
Each
 
curtain
 
airbag
 
is
 
built
 
into
 
the
 
pillars
 
and
 
t

he
 
upper
 
passenger
 
compartment
 
area.
Curtain airbags
Deployment
The curtain airbag is deployed at the same t
ime   as   the   corresponding   lateral   airbag   in   the  
e

vent   of   a   serious   side   impact   applied   to   all   or  
p

art   of   the   side   impact   zone   B, perpendicular
to
  the   longitudinal   centreline   of   the   vehicle   on   a  
h

orizontal   plane   and   directed   from   the   outside  
t

owards   the   inside   of   the   vehicle.
The
  curtain   airbag   inflates   between   the   front   or  
r

ear   occupant   of   the   vehicle   and   the   windows.If
  this   warning   lamp   comes   on   in   the
 i

nstrument   panel,   you   must   contact
 a

  CITROËN   dealer   or   a   qualified
 w

orkshop   to   have   the   system   checked.
Operating fault
The airbags may no longer be deployed in the e
vent   of   a   serious   impact.
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Sit in a normal upright position.
W ear   a   correctly   adjusted   seat   belt.
Do
  not   leave   anything   between   the  
o

ccupants   and   the   airbags   (a   child,   pet,  
o

bject...),   nor   fix   or   attach   anything   close   to  
t

he   inflation   trajectory   of   the   airbags;   this  
c

ould   cause   injuries   during   their   deployment.
Never
  modify   the   original   definition   of   your  
v

ehicle, particularly in the area directly
around
  the   airbags.
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.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,   the   dashboard   or   the   passenger's  
s

un   visor   as   this   could   cause   injuries   with  
d

eployment   of   the   airbags.
Advice
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.
For
  more   information   on   accessories,   refer  
t

o   the   corresponding   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   curtain  
a

irbag   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.
For the airbags to be fully effective, observe the safety recommendations below:
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General points relating to child seats
CITROËN recommends that children
should travel on the rear seats of your
vehicle:
-

r
earward facing
 

up   to   the   age   of   3,
-

fo
rward facing
 

over   the   age   of   3.
Although
 
one
 
of
 
CITROËN
 
main
 
criteria
 
when
 
designing
 
your   vehicle,   the   safety   of   your   children   also   depends   on   you.
For
 
maximum
 
safety,
 
please
 
observe
 
the
 f
ollowing r
ecommendations:
-
 
i

n
 
accordance
 
with
 
European
 
regulations,
 
a

ll children under the age of 12 or less
than one and a half metres tall must
travel in approved child seats suited to
their weight , on seats fitted with a seat
belt
 
or
 
ISOFIX
 
mountings*,
-

s

tatistically, the safest seats in your
vehicle for carr ying children are the
rear seats,
-

a c

hild weighing less than 9 kg must
travel in the rear ward facing position
both in the front and in the rear.
*
  
T
he   regulations   on   carrying   children   are  
s

pecific   to   each   country.   Refer   to   the  
l

egislation   in   force   in   your   country.
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Child seat at the rear
Rearward facing
When a rear ward facing child seat is installed on a rear passenger seat ,
  move   the   vehicle's  
f

ront   seat   for ward   and   straighten   the   backrest  
s

o   that   the   rear ward   facing   child   seat   does   not  
t

ouch   the   vehicle's   front   seat.
Forward facing
When a for ward facing child seat is installed on a rear passenger seat ,
  move   the   vehicle's  
f

ront   seat   for ward   and   straighten   the   backrest  
s

o   that   the   legs   of   the   child   in   the   for ward  
f

acing   child   seat   do   not   touch   the   vehicle's   front  
sea

t.Ensure that the seat belt is correctly
tensioned.
For
  child   seats   with   a   support   leg,  
e

nsure   that   this   is   in   firm   contact   with  
t

he   floor.   If   necessary,   adjust   the   front  
s

eat   of   the   vehicle.
Centre rear seat
A child seat with a support leg must never be installed on the centre rear passenger seat .
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Child seat in the front*
Rearward facingForward facing
Passenger seat adjusted to the intermediate
longitudinal position.
Ensure that the seat belt is correctly
tensioned.
For
 
child
 
seats
 
with
 
a
 
support
 
leg,
 
e

nsure
 
that
 
the
 
support
 
leg
 
is
 
in
 
stable
 
c

ontact
 
with
 
the
 
floor.
 
If
 
necessary,
 
a

djust
 t

he
 p

assenger
 sea

t.
When
 
a
 
rear ward
 
facing
 
child
 
seat
 
is
 
installed
 o
n the front passenger seat ,
 a
djust
 t
he
 s
eat
 t
o
 
t

he
 
intermediate
 
longitudinal
 
position,
 
with
 
the
 
b

ackrest
 st

raightened.
The
 
passenger's
 
front
 
airbag
 
must
 
be
 
d

eactivated.
 O

therwise,
 t

he child would
risk being seriously injured or killed if the
airbag were to inflate . When
 
a
 
for ward
 
facing
 
child
 
seat
 
is
 
installed
 
on
 t
he front passenger seat ,
 
adjust
 
the
 
vehicle's
 
s

eat
 
to
 
the
 
intermediate
 
longitudinal
 
position
 
w

ith
 
seat
 
backrest
 
straightened
 
and
 
leave
 
the
 
p

assenger's
 
front
 
airbag
 
activated.
*
  
R

efer
 
to
 
the
 
current
 
legislation
 
in
 
your
 
country
 
b

efore
 
installing
 
your
 
child
 
on
 
the
 
front
 
seat.
Safety