2015 Citroen C4 CACTUS brakes

103
C4-cactus_en_Chap05_conduite_ed02-2014
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.
5
driving

129
C4-cactus_en_Chap07_securite_ed02-2014
Electronic Stability Control (ESC) incorporating the   following   systems:
-
 
a
nti-lock   braking   system   (ABS)   and   the  
e

lectronic   brake   force   distribution   (EBFD),
-
 
e
mergency   braking   assistance   (EBA),
-
 
w
heel   anti-slip   regulation   (ASR)   or   traction  
c

ontrol,
-
 
d
ynamic   stability   control   (DSC).
Electronic stability control (ESC)
Definitions
Anti-lock braking system (ABS)
and electronic brake force
distribution (EBFD)
This system improves the stability and manoeuvrability   of   your   vehicle   when   braking  
a

nd   contributes   towards   improved   control   in  
c

orners, in particular on poor or slippery road
surfaces.
The
  ABS   prevents   wheel   lock   in   the   event   of  
em

ergency
 b
raking.
The
  electronic   brake   force   distribution   system  
m

anages   the   braking   pressure   wheel   by   wheel.
Emergency braking assistance
(EBA)
In an emergency, this system enables you to reach   the   optimum   braking   pressure   more  
q

uickly   and   therefore   reduce   the   stopping  
di

stance.
It
  is   triggered   according   to   the   speed   at   which  
t

he   brake   pedal   is   pressed.   This   is   felt   by   a  
r

eduction in the resistance of the pedal and an
increase
  in   the   effectiveness   of   the   braking.
Anti-slip regulation (ASR)
The ASR system (also known as Traction Control)   optimises   traction   in   order   to   limit  
w

heel   slip   by   acting   on   the   brakes   of   the   driving  
w

heels   and   on   the   engine.   It   also   improves  
t

he directional stability of the vehicle on
acceleration.
Dynamic stability control (DSC)
If there is a difference between the path
followed   by   the   vehicle   and   that   required   by  
t

he   driver,   the   DSC   monitors   each   wheel   and  
a

utomatically   acts   on   the   brake   of   one   or   more  
w

heels   and   on   the   engine   to   return   the   vehicle  
t

o   the   required   path,   within   the   limits   of   the   laws  
o

f   physics.
7
Safety

131
C4-cactus_en_Chap07_securite_ed02-2014
Dynamic stability control (DSC)
and anti-slip regulation (ASR)The DSC system offers exceptional safety   in   normal   driving,   but   this   should  
n

ot   encourage   the   driver   to   take   extra  
r

isks   or   drive   at   high   speed.
The
  correct   operation   of   the   system  
d

epends on observation of the
manufacturer's
 r

ecommendations
 r

egarding   the   wheels   (tyres   and   rims),  
t

he   braking   components,   the   electronic  
c

omponents   and   the   assembly   and  
r

epair procedures used by CITR
oËn

dealers.
After
  an   impact,   have   the   system  
c

hecked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Activation
These systems are activated automatically each   time   the   vehicle   is   started.
As
  soon   as   they   detect   a   problem   of   grip   or  
t

rajectory,   these   systems   act   on   the   operation   if  
t

he   engine   and   brakes.
Deactivation
In exceptional conditions (starting a vehicle which   is   bogged   down,   stuck   in   snow,   on   soft  
g

round...),   it   may   be   advisable   to   deactivate  
t

he   DSC   system,   so   that   the   wheels   can   move  
f

reely   and   regain   grip.
This
 
is
 
indicated
 
by
 
flashing
 
of
 
this
 
w

arning
 
lamp
 
in
 
the
 
instrument
 
panel.
Operating fault
But it is recommended that the system be r eactivated   as   soon   as   possible.
F
 
P
ress   the   button.
This warning lamp and the indicator lamp in   the   button   come   on:   the   DSC   system   no l

onger   acts   on   the   operation   of   the   engine.
Reactivation
The system is reactivated automatically each time   the   ignition   is   switched   back   on   or   from  
3

0 mph   (50   km/h).
F
 
P
ress   the   button   again   to  
r

eactivate   it   manually. If
  this   warning   lamp   comes   on,  
a

ccompanied   by   an   audible   signal  
a

nd   a   message,   this   indicates   a   fault  
w

ith   the   system.
Contact   a   CITROËN   dealer   or   a   qualified  
w

orkshop   to   have   the   system   checked.
7
Safety

205
C4-cactus_en_Chap09_info-pratiques_ed02-2014
Towing another vehicle
F On  the   rear   bumper,   press   the   bottom   of  t
he   cover   to   unclip   it.
F
 
S
crew   the   towing   eye   in   fully.
F
 
I
nstall   a   towing   arm.
F
 
S
witch   on   the   hazard   warning   lamps   on  
b

oth   vehicles.
F
 
M
ove   off   gently   and   drive   slowly   over   a  
s

hort   distance   only.
F
 O
n
 
the
 
front
 
bumper,
 
press
 
at
 
the
 
bottom
 
of
 t
he
 
cover
 
to
 
unclip
 
it.
F
 
S

crew
 
the
 
towing
 
eye
 
in
 
fully.
F
 
I

nstall
 
a
 
towing
 
arm.
F
 
P

ut
 
the
 
gear
 
lever
 
into
 
neutral
 
(control
 
N for
an
 
electronic
 
gearbox).
Towing the vehicle
Failure to follow this instruction could
lead   to   damage   to   certain   components  
(

brakes,   transmission,   ...)   and   the  
a

bsence   of   braking   assistance   on  
r

estarting   the   engine. F
 
U
nlock   the   steering   by   turning   the   ignition  
k

ey   one   notch   and   release   the   parking  
b

rake.
F  
S
witch   on   the   hazard   warning   lamps   on  
b

oth   vehicles.
F  
M
ove   off   gently   and   drive   slowly   over   a  
s

hort   distance   only.
9
Practical information

207
C4-cactus_en_Chap09_info-pratiques_ed02-2014
Driving advice
Distribution of loads
F distribute the load in the trailer so that the heaviest   items   are   as   close   as  
p

ossible   to   the   axle   and   the   nose   weight  
a

pproaches   the   maximum   permitted  
w

ithout   exceeding   it.
ai

r 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.
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   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  v
ehicle   and   of   the   trailer,   observing   the  
re

commended
 p
ressures.
Lighting
F Check  the   electrical   lighting   and   signalling  o
n   the   trailer.
Refer to the "Technical data" section for details
of
 
the
 
weights
 
and
 
towed
 
loads
 
which
 
apply
 
to
 
y

our
 
vehicle.
When
 
not
 
towing
 
a
 
trailer,
 
remove
 
the
 
q

uickly-detachable
 
tow
 
ball
 
before
 
d

riving. The
  rear   parking   sensors   will   be  
d

eactivated   automatically   if   a   genuine  
C

ITROËN   towbar   is   used.
9
Practical information

224
C4-cactus_en_Chap10_verifications_ed02-2014
Brake wear depends on the style of   driving,   particularly   in   the   case  
o

f vehicles used in town, over short
distances.
  It   may   be   necessary   to  
Brake pads
For information on checking brake disc wear, contact a CITRoËn dealer
or
  a   qualified   workshop.
Brake disc wearOnly use products recommended by CITROËN   or   products   of   equivalent  
q

uality
 an
d
 sp
ecification.
In
  order   to   optimise   the   operation   of  
u

nits   as   important   as   those   in   the  
b

raking   system,   CITROËN   selects   and  
o

ffers   very   specific   products.
After
  washing   the   vehicle,   dampness,  
o

r   in   wintry   conditions,   ice   can   form  
o

n   the   brake   discs   and   pads:   braking  
e

fficiency   may   be   reduced.   Make   light  
b

rake   applications   to   dry   and   defrost  
t

he   brakes.Manual gearbox
The gearbox does not require any maintenance   (no   oil   change).
Refer
  to   the   manufacturer's   service  
s

chedule   for   the   checking   interval   for  
t

his
 c
omponent.
Electronic gearbox
The gearbox does not require any maintenance   (no   oil   change).
Refer
  to   the   manufacturer's   service  
s

chedule   for   details   of   the   checking  
i

nterval   for   this   component.
Parking brake
If excessive travel or a loss of effectiveness   of   this   system   is  
n

oticed,   the   parking   brake   must   be  
c

hecked,   even   between   two   services.
Checking
  this   system   must   be   done   by   a  
C

ITROËN   dealer   or   a   qualified   workshop. To
  avoid   damaging   the   electrical   units,  
n

ever use   a   high   pressure   jet   wash   in  
t

he   engine   compartment.
have
 
the
 
condition
 
of
 
the
 
brakes
 
checked,
 
even
 
b

etween
 v

ehicle
 s

ervices.
Unless
 
there
 
is
 
a
 
leak
 
in
 
the
 
circuit,
 
a
 
drop
 
in
 
t

he
 
brake
 
fluid
 
level
 
indicates
 
that
 
the
 
brake
 
p

ads
 
are
 
worn.
Checks