2018 CITROEN C4 sensor

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When towing
Distribution of loads
F Distribute the load in the trailer so that the heaviest   items   are   as   close   as   possible   to  
t

he   axle   and   the   nose   weight   approaches  
t

he   maximum   permitted   without  
e

xceeding it.
Air density decreases with altitude, thus
reducing
  engine   per formance.   Above  
1 0

00 metres,   the   maximum   towed   load   must  
b

e   reduced   by   10 %   for   every   1 000   metres   of  
al

titude.
For
  more   information   on   weights   (and   the  
t

owed loads which apply to your vehicle) refer
to
  the   corresponding   section.
Side wind
F Take  into   account   the   increased   sensitivity  t
o   side   wind.
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   coolant  
t

emperature. F
 
I
f   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,   the   use   of  
e

ngine   braking   is   recommended.
Ty r e s
F Check  the   tyre   pressures   of   the   towing  v
ehicle   and   of   the   trailer,   observing   the  
re

commended
 p
ressures.
Lighting
F Check  the   electrical   lighting   and   signalling  o
n   the   trailer   and   the   hadlamp   beam   height  
o

f   your   vehicle.
For
  more   information   on   adjusting   the  
h

eadlamp   beam   height,   refer   to   the  
c

orresponding
 s
ection.
The
  rear   parking   sensors   will   be  
d

eactivated   automatically   if   a   genuine  
C

ITROËN   towbar   is   used.
Driving

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C4-cactus_en_Chap06_conduite_ed01-2016
This system indicates the proximity of an obstacle   (pedestrian,   vehicle,   tree,   gate,   etc.)  
w

hich   comes   within   the   field   of   detection   of  
s

ensors   located   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,   if   they  
a

re   located   in   blind   spots   in   the   sensors'   field  
o

f   detection.
Parking sensors
This system  c annot  i n  a ny  c ircumstances  r eplace t
he   need   for   vigilance   on   the   part   of   the   driver.
The system is switched on by engaging reverse ge a r.
This
  is   confirmed   by   an   audible   signal.
The
  system   is   switched   off   when   you   come   out  
o

f   reverse   gear.
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.
Rear parking
sensors
Visual assistance
This supplements the audible signal by d isplaying   bars   in   the   screen   or   the   instrument  
p

anel   which   move   progressively   nearer   to  
t

he   vehicle.   When   the   obstacle   is   near,   the  
"

Danger"   symbol   is   displayed.
Driving

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C4-cactus_en_Chap06_conduite_ed01-2016
Front parking
sensors
The sound emitted by the speaker (front or rear) indicates whether the obstacle
is
  in   front   or   behind. The
  system   will   be   deactivated  a
utomatically   if   a   trailer   is   being  
t

owed or a bicycle carrier is fitted on
a towbar (vehicle fitted with a towbar
installed
  in   line   with   the   manufacturer's  
r

ecommendations).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.
As
 
an
 
addition   to   the   rear   parking   sensors,   the  
f

ront
 
parking   sensors   are   triggered   when   an  
o

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

he
 
vehicle   stops   for   more   than   three   seconds  
i

n
 
for ward   gear,   if   no   further   obstacles   are  
d

etected or when the speed of the vehicle
exceeds   6   mph   (10   km/h).
Operating fault
In the event of a malfunction of t
he   system,   when   reverse   gear   is  
e

ngaged   the   symbol   for   the   button  
c

hanges   to   alert   mode   and   the  
w

arning   lamp   flashes   for   a   few  
m

oments   then   stays   on   continuously.
A
 
message   appears,   accompanied   by   an  
a

udible
 
signal   (short   beep).
Contact
 
a   CITROËN   dealer   or   a   qualified  
w

orkshop.
F

Sel

ect " Parking sensors " in the
" Driving assistance "
 
menu.
 
T

he
 
indicator
 
lamp
 
in
 
the
 
button
 
c

omes
 
on.
High pressure jet wash
When
 
washing   your   vehicle,   do   not   direct   the  
l

ance
 
within   30   cm   of   the   sensors.
Pressing
 
this
 
button
 
again
 
reactivates
 
the
 
s

ystem.
 
The
 
indicator
 
lamp
 
goes
 
off.
The
 
parking
 
sensors
 
can
 
be
 
deactivated
 
in
 
the
 t
ouch
 
screen
 
tablet.
The
 
parking
 
sensors
 
are
 
deactivated
 
w

hile
 
the
 
Park
 
Assist
 
system
 
is
 
m

easuring
 
a
 
space.
See
 
the
 
"Park
 
Assist"
 
section.
Deactivation / Activation of
the front and rear parking
sensors
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Driving

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Reversing camera
Opening the tailgate causes the display t
o   disappear.
The
 r

eversing
 c

amera
 i

s
 a

ctivated
 a

utomatically
 w

hen
 r

everse
 g

ear
 is enga

ged.
The
 
image
 
is
 
displayed
 
in
 
the
 
touch
 
screen
 
t

ablet. The
 
blue
 
lines
 
represent
 
the
 
general
 
direction
 
o

f
 
the
 
vehicle
 
(the
 
gap
 
represents
 
the
 
width
 
of
 
y

our
 
vehicle
 
except
 
for
 
the
 
door
 
mirrors).
The red lines represent a distance of about
30
 
cm
 
beyond
 
the
 
edge
 
of
 
your
 
vehicle's
 
rear
 b
u m p e r.
The
 
green
 
lines
 
represent
 
distances
 
of
 
a

bout 1 and
 
2
 
metres
 
beyond
 
the
 
edge
 
of
 
your
 
v

ehicle's
 
rear
 
bumper.
The
 
turquoise
 
blue
 
curves
 
represent
 
the
 
m

aximum
 
turning
 
circle. Clean
  the   reversing   camera   regularly   using   a  
s

oft,
 
dry   cloth.
The
 
reversing
 
camera
 
cannot
 
in
 
any
 
c

ircumstances
 
replace
 
the
 
need
 
for
 
v

igilance
 
on
 
the
 
part
 
of
 
of
 
the
 
driver. It
  is   normal   to   see   part   of   the   number  
p

late   displayed   at   the   bottom   of  
t

he screen.
The
 
reversing
 
camera
 
function
 
may
 
be
 s
upplemented
 
with
 
parking
 
sensors.
High pressure jet washing
When
  washing   your   vehicle,   do   not  
d

irect   the   lance   within   30   cm   of   the  
c

amera   lens.
Driving

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C4-cactus_en_Chap06_conduite_ed01-2016
Park Assist
This system provides active assistance with parking, detecting a parking space then controlling the steering to park in the space.
I t   controls   the   steering   while   the   driver   manages   the   accelerator,   brakes,   gears   and   clutch   (manual   gearbox).   During   phases   of   entry   into   and   exit   from  
a

  parking   space,   the   system   provides   visual   and   audible   information   to   the   driver   in   order   to   make   the   manoeuvre   safe.   It   may   be   necessary   to   move  
f

or wards   and   backwards   more   than   once.
The
  Park   Assist   system   cannot   in   any  
c

ircumstances   replace   the   need   for  
v

igilance   on   the   part   of   the   driver.
The
  driver   must   remain   in   control   of  
t

heir   vehicle   ensuring   that   the   space  
r

emains   clear   during   the   manoeuvre.
In
  some   circumstances,   the   sensors  
m

ay   not   detect   small   obstacles   located  
i

n   their   blind   spots. Changing
  tyre   sizes   (out-size   tyres,  
w

inter   tyres,   ...)   can   inter fere   with  
t

he   correct   operation   of   the   parking  
a

ssistance   system.
During
  a   manoeuvre   the   steering   wheel  
t

urns   quickly:   do   not   hold   the   steering  
w

heel, do not place your hand between
the
  spokes   of   the   steering   wheel   and  
t

ake   care   with   loose   and   bulky   clothing,  
s

carves,   handbags...   There   is   a   risk   of  
in

jury. For
  entry   into   a   parking   space   (parallel  
p

arking)   the   system   does   not   detect  
s

paces   which   are   clearly   much   smaller  
o

r   larger   than   the   size   of   the   vehicle.
This
  "parking   assistance"   system  
i

s   activated   automatically   during  
m

anoeuvres;   it   is   therefore   possible  
t

hat   a   symbol   comes   on   in   the   screen,  
a

ccompanied   by   an   audible   signal,  
w

ithout   affecting   the   manoeuvre.The
  selection   of   the   type   of   manoeuvre  
(

entering   or   exiting   a   parallel   parking  
s

pace)   prevents   a   change   to   STOP  
m

ode   of   Stop   &   Start.
In
  STOP   mode,   this   selection   restarts  
t

he
 eng
ine.
The
  driver   can   take   control   at   any   time   by   gripping   the   steering   wheel.
The
 
s
ystem  
p
rovides  
a
ssistance  
i
n  
e
ntering  
a
nd  
e

xiting
 a par
king
 spa
ce
 w
hen
 par
allel
 par
king.
6
Driving

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C4-cactus_en_Chap06_conduite_ed01-2016
In bad weather and in winter, ensure
that the sensors are not covered by
road  dirt,   ice   or   snow.
In
  the   event   of   a   fault,   have   the   system  
c

hecked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
If
 
the
 
system
 
is
 
deactivated
 
during
 
a
 
m

anoeuvre,
 
the
 
driver
 
should
 
reactivate
 
i

t
 
to
 
repeat
 
the
 
measurement.
If the lateral distance between your vehicle
and  the   space   is   too   great,   the   system   may
 n

ot   be   able   to   measure   the   space.
Anything   projecting   beyond   the   envelope
 o

f   the   vehicle   (long   or   wide   load)   is   not
 t

aken   into   account   by   the   Park   Assist
 s

ystem   during   a   manoeuvre.
Deactivation
A message is displayed in the screen.
T he   driver   then   takes   back   control   of   the  
v

ehicle's
 s
teering.
The
 
system
 
is
 
deactivated
 
by
 
pressing
 
the
 P
ark
 
Assist
 
control
 
(or
 
the
 
Park
 
Assist
 
button
 
i

n the " Driving assistance "
 
menu
 
of
 
the
 
touch
 
s

creen tablet),
The
 
system
 
is
 
deactivated
 
automatically:
-
 
o

n
 
switching
 
off
 
the
 
ignition,
-
 
i

f
 
the
 
engine
 
stalls,
-
 
i

f
 
no
 
manoeuvre
 
is
 
started
 
within
 
5
 
minutes
 
o

f
 
selection
 
of
 
the
 
type
 
of
 
manoeuvre,
-
 
a

fter
 
a
 
prolonged
 
stop
 
of
 
the
 
vehicle
 
during
 
a

 
manoeuvre,
-
 
i

f
 
the
 
road
 
wheel
 
anti-spin
 
regulation
 
(ASR)
 
s

ystem
 
is
 
invoked,
-
 
i

f
 
the
 
speed
 
of
 
the
 
vehicle
 
exceeds
 
the
 
s

tated
 
limit,
-
 
w

hen
 
the
 
driver
 
interrupts
 
movement
 
of
 
the
 
s

teering
 w

heel,
-
 
i

f
 
the
 
driver
 
presses
 
the
 
Park
 
Assist
 
control
 
(

or
 
the
 
Park
 
Assist
 
button
 
of
 
the
 
"Driving
 
a

ssistance"
 
menu
 
in
 
the
 
touch
 
screen
 
t

ablet),
-
 
i

f
 
correct
 
positioning
 
of
 
the
 
vehicle
 
is
 
not
 
p

ossible
 
(too
 
many
 
manoeuvres
 
needed
 
to
 
i

nsert
 
or
 
extract
 
the
 
vehicle),
-
 
i

f
 
the
 
driver's
 
door
 
is
 
open,
-

i

f one of the front wheels encounters an
obstacle.
Switching off
The system is switched off automatically:
-  w hen   towing   a   trailer,
-
 
i
f   the   driver's   door   is   opened,
-
 
i
f   the   speed   of   the   vehicle   is   above   42   mph  
(

70   km/h).
To
  switch   the   system   of   for   a   prolonged   period,  
c

ontact   a   CITROËN   dealer   or   a   qualified  
w

orkshop.
Operating faults
In the event of a fault with the system, the   symbol   in   the   button   (located   in  
t

he   touch   screen   tablet)   changes   to  
a

lert   mode   and   the   warning   lamp  
f

lashes   and   then   goes   off.
Contact
 
a
  CITROËN   dealer   or   a   qualified  
w

orkshop.
6
Driving

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C4-cactus_en_Chap06_conduite_ed01-2016
Under-inflation detection
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. The
  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   impairs  
r

oad   holding,   extends   braking   distances  
a

nd   causes   premature   tyre   wear,  
par

ticularly under arduous condition
(high
  loading,   high   speed,   long   journey).
System
  which   automatically   checks   the   pressures   of   the   tyres   while   driving.
The inflation pressures defined for
your vehicle can be found on the tyre
pressure
  label.
For
  more   information   on   the  
i

dentification   markings,   refer   to   the  
c

orresponding
 s
ection.
Tyre
  pressures   should   be   checked  
w

hen the tyres are "cold" (vehicle
stopped
  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.
Driving

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C4-cactus_en_Chap08_En-cas-de-panne_ed01-2016
Dashboard fuses
The 2 fuseboxes are placed in the lower dashboard,   below   the   steering   wheel.Fuse
N° Rating
(A) Functions
F01 10Brake   pedal   (switch   2),   Stop   &   Start.
F02 5Headlamp   beam   height   adjuster,   additional   heater   (Diesel),  
p

arking   sensors,   diagnostic   socket,   door   mirrors   (electric  
a

djustment),   Grip   control.
F03 10Diesel   additive   pump,   electric   power   steering,   clutch   pedal  (
sw i tc h).
F04 5Rain
  and   sunshine   sensor.
F06 10Brake
  pedal   (switch   1),   diagnostic   socket.
F08 5
Top of steering column contacts with steering mounted controls.
F105Emergency   call   /   Assistance   call.
F12 5Stop
  &   Start,   ABS,   ESC.
F13 5Parking
  sensors,   reversing   camera.
F14 10Electronic
  gearbox,   switch   panel   (below   the   touch   screen  
t

ablet),   air   conditioning,   touch   screen   tablet.
F16 1512
  volt   socket.
F18 20Radio.
Access to the fuses
F Unclip  the   cover   by   pulling   at   top   left,   then  r
ight.
Left hand fusebox
8
In the event of a breakdown