2015 Citroen C4 sensor

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blind spot sensors
This driving assistance system warns the driver of the presence of another vehicle in the blind
spot
  angle   of   their   vehicle   (areas   masked   from  
t

he   driver's   field   of   vision),   as   soon   as   this  
p

resents   a   potential   danger.
Operation
F On  switching   on   the   ignition,   or   engine  r
unning,   press   this   button   to   activate   the  
f

unction;   the   warning   lamp   comes   on.
Sensors
  fitted   in   the   front   and   rear   bumpers  
m

onitor   the   blind   spots.
A
 
warning
 
lamp
 
appears
 
in
 
the
 
door
 
mirror
 
on
 t
he
 
side
 
in
 
question:
-
 i
mmediately,
 
when
 
being
 
overtaken,
-

a

fter a delay of about one second, when
overtaking
 
a
 
vehicle
 
slowly.
This
 
system
 
is
 
designed
 
to
 
improve
 
s

afety
 
when
 
driving
 
and
 
is
 
in
 
no
 
c

ircumstances
 
a
 
substitute
 
for
 
the
 
use
 
o

f
 
the
 
interior
 
rear
 
view
 
mirror
 
and
 
door
 
m

irrors.
 
It
 
is
 
the
 
driver's
 
responsibility
 
to
 
c

onstantly
 
check
 
the
 
traffic,
 
to
 
assess
 
t

he distances and relative speeds
of other vehicles and to predict their
movements
 
before
 
deciding
 
whether
 
to
 
c

hange
 lan

e.
The
 
blind
 
spot
 
sensor
 
system
 
can
 
never
 
r

eplace
 
the
 
need
 
for
 
vigilance
 
on
 
the
 
p

art
 
of
 
the
 
driver.
driving

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F To  deactivate   the   system,   press   this   button  a
gain;   the   warning   lamp   goes   off.
The
  state   of   the   system   remains   in   memory   on  
s

witching   off   the   ignition.
Operating fault
The system is automatically deactivated when   towing   with   a   towbar   approved   by  
CIT

ROËN. The
  system   may   suffer   temporary  
i

nterference in certain weather
conditions(rain,
 h
ail...).
In   particular,   driving   on   a   wet   sur face  
o

r   moving   from   a   dry   area   to   a   wet   area  
c

an   cause   false   alerts   (for   example,   the  
p

resence   of   a   fog   of   water   droplets   in  
t

he   blind   spot   angle   is   interpreted   as   a  
v

ehicle).
In bad or wintry weather, ensure that
the   sensors   are   not   covered   by   mud,   ice  
o

r   snow.
Take   care   not   to   cover   the   warning   zone  
i

n   the   door   mirrors   or   the   detection  
z

ones   on   the   front   and   rear   bumpers  
w

ith   adhesive   labels   or   other   objects;  
t

hey   may   hamper   the   correct   operation  o
f   the   system.
In   the   event   of   a   fault,   the   warning   lamp   in   the  
b

utton   flashes   then   goes   off.
Have   it   checked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Driving

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Parking sensors
The system is switched on by engaging reverse gear.   This   is   accompanied   by   an   audible   signal.
The
  system   is   switched   off   when   you   come   out  
o

f   reverse   gear.
Rear parking sensors
Audible assistance
The proximity information is given by an intermittent   audible   signal,   the   frequency   of   which i

ncreases   as   the   vehicle   approaches   the   obstacle.
The
  sound   emitted   by   the   speaker   (right   or   left)
 i

ndicates   the   side   on   which   the   obstacle   is   located.
When the distance between the vehicle and
the
  obstacle   becomes   less   than   approximately
 t

hirty   centimetres,   the   audible   signal   becomes
 c

ontinuous.
Visual assistance
This supplements the audible signal by d isplaying   bars   in   the   multifunction   screen  
w

hich   move   progressively   nearer   to   the   vehicle.  
W

hen   the   obstacle   is   near,   the   "Danger"  
s

ymbol   is   displayed   in   the   screen.
This function cannot, in an y c ircumstances, t
ake   the   place   of   the   vigilance   of   the   driver.
This system indicates the proximity of an obstacle   (person,   vehicle,   tree,   gate, etc.)   which c

omes   within   the   field   of   detection   of   sensors
 l

ocated   in   the   bumper.
Certain
  types   of   obstacle   (stake,   roadworks  
c

one,   etc.)   detected   initially   will   no   longer   be  
d

etected   at   the   end   of   the   manoeuvre   due   to  
t

he   presence   of   blind   spots.
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Driving

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In addition to the rear parking sensors, the front parking   sensors   are   triggered   when   an   obstacle i

s detected in front and the speed of the vehicle is
still
  below   6   mph   (10   km/h).
The
  front   parking   sensors   are   interrupted   if   the
 v

ehicle   stops   for   more   than   three   seconds   in
 f

or ward   gear,   if   no   further   obstacles   are   detected
 o

r   when   the   speed   of   the   vehicle   exceeds   6   mph
 (

10   km/h).
Front parking sensors
Deactivation/Activation of the
front and rear parking sensors
The function is deactivated by pressing this button.   The   indicator   lamp   in   the   button  
comes
  on.
Pressing
  this   button   again   reactivates   the  
f

unction.   The   indicator   lamp   in   the   button  
goes
  off.
Operating fault
In the event of a malfunction of the   system,   when   reverse   gear  
i

s   engaged   this   warning   lamp   is  
d

isplayed   in   the   instrument   panel  
a

nd/or   a   message   appears   in   the  
s

creen,   accompanied   by   an   audible  
s

ignal   (short   beep).
Contact a CITR
oËn

dealer or a
qualified
 w

orkshop.
The
 
sound
 
emitted
 
by
 
the
 
speaker
 
(front
 
or
 
r

ear)
 
indicates
 
whether
 
the
 
obstacle
 
is
 
in
 
front
 
o

r
 
behind. The function will be deactivated
automatically
 
if
 
a
 
trailer
 
is
 
being
 
towed
 
o

r
 
a
 
bicycle
 
carrier
 
is
 
fitted
 
(vehicle
 
f

itted with a towbar or bicycle carrier
recommended
 
by
 
CITROËN). In bad weather or in winter, ensure
that the sensors are not covered with
mud,
  ice   or   snow.   When   reverse   gear   is  
e

ngaged,   an   audible   signal   (long   beep)  
i

ndicates   that   the   sensors   may   be   dirty.
Certain
  sound   sources   (motorcycle,  
l

orry,
  pneumatic   drill,   etc.)   may   trigger  
t

he
 
audible   signals   of   the   parking  
s

ensor   system.
driving

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Taking out the standard wheel
F Unscrew  the   yellow   central   bolt.
F  R aise   the   spare   wheel   towards   you   from  
t

he   rear.
F
 
T
ake   the   wheel   out   of   the   boot.
Putting the standard wheel back
in place
F Put  the   wheel   back   in   its   housing.
F  U nscrew   the   yellow   central   bolt   by   a   few  
t

urns then put it in place in the centre of the
wheel.
Tyre under-inflation detection
The spare wheel is not fitted with a
sensor.   The   punctured   wheel   must  
b

e repaired by a CITR
oËn
dealer or
aqualified
 w

orkshop.
F
 
T

ighten   fully   until   the   central   bolt   clicks   to  
r

etain   the   wheel   correctly.
F
 
P

ut   the   box   back   in   place   in   the   centre   of  
t

he   wheel   and   clip   it.
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Changing foglamp bulbs
F Introduce a flat screwdriver in the hole in the f inisher.
F
 
P
ull   and   lever   to   unclip   the   bumper   finisher  
(

the   parking   sensor   stays   with   the   finisher).
F
 
R
emove   the   two   module   fixing   screws   and
 r

emove   it   from   its   housing.
F
 
D
isconnect   the   bulb   holder   connector.
F
 
T
urn   the   bulb   holder   a   quarter   of   a   turn   and  
e

xtract   it.
F
 
P
ull   the   bulb   and   change   it.
To refit, carry out these operations in reverse
o r d e r.
To
  replace   these   bulbs   you   may   also   contact   a
 C

ITROËN   dealer   or   a   qualified   workshop.
Changing the side spotlamps
(LEDs)
For the replacement of this type of light emitting diode   lamp,   contact   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Changing integrated direction
indicator side repeaters
F Insert a flat screwdriver towards the centre of the repeater between the repeater and
the
  base   of   the   mirror.
F
 
T
ilt   the   flat   screwdriver   to   extract   the  
r

epeater   and   remove   it.
F
 
D
isconnect   the   repeater   connector.
To
  reassemble,   carry   out   these   operations   in  
r

everse
 o
rder.
Contact
  a   CITROËN   dealer   or   a   qualified  
w

orkshop   to   obtain   replacement   repeaters.
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F If  the   warning   lamp   and   the  S
TOP  warning   lamp   come   on,  
s

top the vehicle and switch off
the
  engine   as   soon   as   possible.
Braking
Towing a trailer increases the braking distance.
T o   avoid   overheating   of   the   brakes   on   a   long  
m

ountain   type   of   descent,   the   use   of   engine  
b

raking   is   recommended.
Ty r e s
F Check   the   tyre   pressures   of   the  
towing   vehicle   and   of   the   trailer,   observing  
t

he
 re
commended
 p
ressures.
Lighting
F Check  the   electrical   lighting   and   signalling  o
n   the   trailer.
The
  rear   parking   sensors   will   be  
d

eactivated   automatically   if   a   genuine  
C

ITROËN   towbar   is   used.
Cooling
Towing a trailer on a slope increases the temperature   of   the   coolant.
As
  the   fan   is   electrically   controlled,   its   cooling  
c

apacity   is   not   dependent   on   the   engine   speed.
F
 
T
o   lower   the   engine   speed,   reduce   your  
s

peed.
The
  maximum   towed   load   on   a   long   incline  
d

epends   on   the   gradient   and   the   ambient  
t

emperature.
In
  all   cases,   keep   a   check   on   the   
c
oolant  
t

emperature.
Practical information

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accessories
Conversion kits
You can obtain an "Enterprise" kit to convert a trade   vehicle   to   a   private   car   and   vice-versa.
"Comfort":
door deflectors, side window blinds, rear
screen  blind,   insulated   module,   coat   hanger  
f

ixed   to   head   restraint,   reading   lamp,   mirror   for  
c

aravan, cruise control, scented air freshener
and
  cartridges,   parking   sensors...
"Transport systems":
boot carpet, boot liner, boot net, boot spacers,
transverse  roof   bars,   bicycle   carrier,   ski   carrier,  
r

oof   boxes,   towbars,   towbar   wiring   harnesses...
"Styling":
gear lever knobs, aluminium foot rest, alloy wheels,   wheel   embellishers,   chrome   mirror  
s

hells,   chrome   door   
a
perture   finishers,   door   sill  
f

inishers,   tailgate   lower   chrome   finisher...
*
 
T
o   avoid   any   risk   of   jamming   the   pedals:
-
 
e
nsure   that   mats   are   correctly   positioned  
a

nd secured,
-
 
n
ever   fit   one   mat   on   top   of   
a
nother.
"Security and safety":
anti-intrusion alarm, microwave sensor, anti-tilt sensor,   stolen   vehicle   tracking   system,   child  
sea

ts and booster cushions, breathalyser, first
aid
  kit,   fire   extinguisher,   warning   triangle,   high  
v

isibility   vest,   dog   guard,   pet   seat   belt,   wheel  
s

ecurity bolts, snow chains, non-slip covers,
front
  foglamp   kit...
"Protection":
mats*, seat covers compatible with  l ateral  a
irbags,   door   sill   protectors,   mud   flaps,   door  
p

rotective   rubbing   strips,   bumper   protection  
s

trips, protective covers for pets, vehicle
cover...
If
 
a
 
towbar
 
and
 
wiring
 
harness
 
are
 
fitted
 
o

utside
 
the
 
CITROËN
 
dealer
 
network,
 
t

he
 
installation
 
must
 
be
 
done
 
using
 
t

he
 
vehicle's
 
electrical
 
pre-equipment
 
a

nd
 
in
 
line
 
with
 
the
 
manufacturer's
 
r

ecommendations.
A
 
wide
 
range
 
of
 
accessories
 
and
 
genuine
 
parts
 
is
 
available
 
from
 
the
 
CITROËN
 
dealer
 
network.
These
 
accessories
 
and
 
parts
 
are
 
all
 
suitable
 
for
 
your
 
vehicle
 
and
 
benefit
 
from
 
CITROËN's
 
recommendation   and   warranty.
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Practical information