2015 Citroen C4 PICASSO brake

162
The active cruise control is switched on
manually:   it   requires   that   the   speed   of   the   vehicle b

e   between   25   mph   (40   km/h)   and   90 mph
 (

150 km/h),   as   well   as   the   engagement   of:
-
 
f
ourth   gear   or   higher   with   a   manual  
g

earbox,
-
 
s
econd   gear   or   higher   with   an   electronic   or  
a

utomatic   gearbox   in   manual   mode,
-
 
p
osition   A   with   an   electronic   gearbox   or   D
with
  an   automatic   gearbox.
General points
The active cruise control can above be paused
using   the   control,   or   automatically:
-
 
b
y   pressing   the   brake   or   clutch   pedal,
-
 
i
n   the   event   of   operation   of   the   ESC,   for  
s

afety reasons,
-
 
i
n   the   event   of   operation   of   the   electric  
p

arking   brake   control   lever,
-
 
w
hen   an   inter-vehicle   time   threshold   is  
r

eached   (calculated   according   to   the  
r

elative   speeds   of   your   vehicle   and   the  
v

ehicle   in   front   and   the   inter-vehicle   time  
se

tting
 c
hosen),
-
 
w
hen   the   distance   between   your   vehicle  
a

nd   the   one   in   front   becomes   to   small,
-
 
w
hen   the   speed   of   the   vehicle   in   front   is   to  
l

ow,
-
 
w
hen   the   speed   of   your   vehicle   becomes  
t

oo   low.
The active cruise control cannot in any
circumstances
 
replace
 
the
 
observation
 
o

f
 
speed
 
limits,
 
nor
 
the
 
need
 
for
 
v

igilance
 
on
 
the
 
part
 
of
 
the
 
driver.
It
 
i

s
 
r

ecommended
 
that
 
y

ou
 
a

lways
 
k

eep
 
y

our
 
feet
 
close
 
to
 
the
 
pedals.
If
 
the
 
speed
 
setting
 
selected
 
is
 
above
 
9

3
 
mph
 
(150
 
km/h),
 
the
 
system
 
switches
 
t

o
 
standard
 
cruise
 
control
 
operation
 
(

a
 
message
 
appears
 
in
 
the
 
instrument
 
pan

el). The
  inter-vehicle   time   setting   is  
m

emorised   on   switching   off   the   ignition.
The active cruise control operates by
day
 
and
 
at
 
night,
 
in
 
fog
 
or
 
in
 
moderate
 
r

ainfall.
The system does not act on the braking s ystem,   but   works   only   with   engine   braking.
The
  regulation   range   is   limited:   there   will
 n

o   longer   be   any   adjustment   of   speed   if   the
 d

ifference   between   the   programmed   speed
 s

etting   and   the   speed   of   the   vehicle   in   front
 b

ecomes   too   high   (18   mph   (30   km/h)).
The selection of this system deactivates the   inter-vehicle   time   function.
If
  the   difference   between   the  
p

rogrammed   speed   setting   and   the  
s

peed   of   the   vehicle   in   front   is   too  
g

reat,   the   speed   cannot   be   adjusted:  
t

he   cruise   control   is   automatically  
d

eactivated.
driving

170
The change from one level of alert to   the   next   takes   place   if   the   driving  
c

onditions   do   not   change   (speed  
u

nchanged,   no   change   of   lane...)
Severe
  weather   conditions   (very   heavy  
r

ain,   accumulation   of   snow   in   front  
o

f   the   radar)   may   inter fere   with   the  
o

peration   of   the   system,   resulting   in  
t

he   display   of   the   message   "System
inactive: Reduced visibility ".
  The  
s

ystem   remains   unavailable   until   the  
m

essage
 d
isappears.
If
  the   speed   of   your   vehicle   is   too   high  
w

hen   approaching   another   vehicle,   the  
f

irst   level   of   alert   may   not   be   displayed:  
t

he   level   2   alert   may   be   displayed  
d

i r e c t l y.
On
  the   other   hand,   the   level   1   alert  
i

s   never   displayed   with   the   triggering  
t

hreshold   3   (close).
Alerts
According to the collision risk detected by the system   and   the   alert   threshold   chosen,   three  
l

evels   of   alert   can   be   triggered.
Level 1 :
  visual   alert   only   (orange)  
i

ndicating   that   the   vehicle   in   front   is  
v

ery   close.   The   message   "Vehicle
close "
  is   displayed.
Level 2 :
  visual   (red)   and   audible  
a

lerts   indicating   that   a   collision   is  
i

mminent.   The   message   "Brake! " is
displayed.
This
  level   of   alert   is   based   on   the   inter-vehicle  
t

ime   between   your   vehicle   and   the   one   in   front.
This
  level   of   alert   is   based   on   a   time   before  
c

ollision.   It   takes   account   of   the   vehicle  
d

ynamics,   the   speed   of   your   vehicle   and  
t

he   speed   of   the   vehicle   in   front,   the   driving  
c

onditions,   the   situation   with   your   vehicle  
(

cornering,   pedals   pressed,   etc.)   to   trigger   the  
a

lert   at   the   right   moment. Level 3
:   an   increase   in  t
he   tension   of   the   driver's  
s

eat   belt,   to   hold   the   driver  
a

gainst   the   backrest   of   their  
sea

t.
The
  3
rd level of alert is not triggered or i
s
 
interrupted   in   the   event   of   an   impact  
b

etween   the   two   vehicles.
The increase in the tension of the
driver's
  seat   belt   is   intended   only   as   an  
a

lert:
 
it
  does   not   in   any   circumstances  
a

ssure
  the   function   of   driver   safety.
The
 
triggering   of   this   alert   does   not   act  
o

n
 
the
 
safety   functions   provided   by   the  
s

eat
 
belts.
Driving

181
Park Assist
This system provides active assistance with parking,   detecting   a   parking   space   then  
c

ontrolling   the   steering   to   park   in   the   space.
It
  controls   the   steering   while   the   driver  
m

anages   the   accelerator,   brakes,   gears   and  
c

lutch   (manual   gearbox).   During   phases   of  
e

ntry   into   and   exit   from   a   parking   space,   the  
s

ystem   provides   visual   and   audible   information  
t

o   the   driver   in   order   to   make   the   manoeuvres  
s

afe.   It   may   be   necessary   to   move   for wards  
a

nd   backwards   more   than   once. During
  a   manoeuvre   the   steering   wheel  
t

urns   quickly:   do   not   hold   the   steering  
w

heel,   do   not   place   your   hand   between  
t

he   spokes   of   the   steering   wheel   and  
t

ake   care   with   loose   and   bulky   clothing,  
s

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

jury.
When
  Park   Assist   is   activated,   it  
p

revents   a   change   to   STOP   mode   of  
S

top   &   Start.   In   STOP   mode,   activation  
o

f   Park   Assist   restarts   the   engine.
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  
o

f   their   vehicle   ensuring   that   the  
s

pace   remains   clear   throughout   the  
m

anoeuvre.
In
  some   circumstances,   the   sensors  
m

ay   not   detect   small   obstacles   located  
i

n   their   blind   spots.
The
  driver   can   take   control   at   any   time   by  
g

ripping   the   steering   wheel. The
  Park   Assist   system   provides   assistance   for  t
he   following   manoeuvres:
A.
 e

ntry   into   a   parallel   parking   space
B.
 e

xit   from   a   parallel   parking   space
C.
 b

ay
 par
kingThe
  Park   Assist   system   takes   control  
o

f   the   power   steering   for   a   maximum  
o

f   4   manoeuvre   cycles.   The   function  
i

s   deactivated   after   these   4   cycles.  
I

f   you   think   that   your   vehicle   is   not  
p

ositioned   correctly,   you   should   then  
t

ake   control   of   the   steering   to   carry   out  
t

he   manoeuvre.
The
  Park   Assist   system   cannot   work  
w

ith   the   engine   off.
4
Driving

214
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  
su

rfaces.
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  
i

ncrease   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  
a

cceleration.
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.
Safety

215
Intelligent traction control
system ("Snow motion")
When this warning lamp comes on, coupled   with   the   STOP w arning lam p, a

ccompanied   by   an   audible   signal   and   a
 m

essage,   it   indicates   that   there   is   a   fault
 w

ith   the   electronic   brake   force   distribution
 (

EBFD),   which   could   cause   loss   of   control
 o

f   the   vehicle   when   braking.
Operation
When this warning lamp comes on, accompanied   by   an   audible   signal  
a

nd   a   message,   it   indicates   that   there  
i

s   a   fault   with   the   ABS,   which   could  
c

ause loss of control of the vehicle
when
 b

raking. Depending
  on   version,   your   vehicle   has   a  
s

ystem   to   help   driving   on   snow:   intelligent
traction control .
This   system   detects   situations   of   difficult  s
ur face   adhesion   that   could   make   it   difficult   to  
m

ove   off   or   make   progress   on   deep   fresh   snow  
o

r   compacted   snow.
In these situations, the intelligent traction
control
 

limits   the   amount   of   wheel   slip   to  
p

rovide   the   best   traction   and   trajectory   control  
f

or   your   vehicle.
The
  use   of   snow   tyres   is   strongly  
r

ecommended   on   sur faces   offering   low   levels  
o

f   adhesion.
Anti-lock braking system (ABS)
and electronic brake force
distribution (EBFD)When changing w heels  ( tyres  a nd  r ims),  m
ake   sure   that   these   are   approved   for  
y

our   vehicle.
Normal
  operation   of   the   ABS   may   make  
i

tself   felt   by   slight   vibrations   of   the   brake  
ped

al.
In emergency braking, press
very firmly without releasing the
pressure.
You must stop as soon as it is safe to do so.
In
 
both
 
cases,
 
contact
 
a
 
CITROËN
 
dealer
 
or
 
a
 
q

ualified
 w

orkshop.
6
Safety

216
Dynamic stability control (DSC)
and anti-slip regulation (ASR)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   and   ASR,   so   that   the   wheels   can   turn  
f

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

arning
 
lamp
 
in
 
the
 
instrument
 
panel. Reactivate
  the   systems   as   soon   as   the   level   of  
g

rip   permits. F
 
P
ress   this   button.
This
  indicator   lamp   and   the   indicator  
l

amp   in   the   button   come   on.
The
  DSC   and   ASR   systems   no   longer   act  
o

n   the   operation   of   the   engine   and   on   the  
b

rakes   in   the   event   of   a   involuntary   change   of  
t

rajectory.
DSC/ASR
The DSC and ASR systems offer increased s afety   in   normal   driving,   but   they   should   not  
e

ncourage   the   driver   to   take   extra   risks   or   drive  
a

t   high   speed.
It
  is   in   conditions   of   reduced   grip   (rain,   snow,  
i

ce)   that   the   risk   of   loss   of   grip   increases.  
I

t   is   therefore   important   for   your   safety   to  
k

eep   the   DSC   and   ASR   systems   activated  
i

n   all   conditions,   and   particularly   in   difficult  
c

onditions. The
  correct   operation   of   these   systems  
d

epends   on   observation   of   the   manufacturer's  
r

ecommendations   regarding   as   much   the  
w

heels   (tyres   and   rims),   braking   and   electronic  
c

omponents   as   the   assembly   and   repair  
p

rocedures   used   by   CITROËN   dealers.
To   benefit   in   full   from   the   effectiveness   of   the  
D

SC   and   ASR   systems   in   wintry   conditions,  
t

he   vehicle   must   be   fitted   with   four   snow  
t

yres,   allowing   the   the   vehicle   to   retain   neutral  
b

ehaviour   on   the   road.
Safety

263
Removing a wheel
Parking the vehicle
Immobilise the vehicle where it does not block   traffic:   the   ground   must   be   level,  
s

table   and   not   slippery.
Apply
  the   parking   brake   unless   it   has  
b

een   programmed   to   automatic   mode,  
s

witch   off   the   ignition   and   engage   first  
g

ear*   to   block   the   wheels.
Check
  that   the   braking   warning   lamp  
a

nd   the   P   warning   lamp   in   the   parking  
b

rake   control   lever   come   on.
For
  greater   safety,   place   the   chock   2
against
  the   wheel   opposite   to   the   one  
b

eing
 c
hanged.
The
  occupants   must   get   out   of   the  
v

ehicle   and   wait   where   they   are   safe.
Never
  go   underneath   a   vehicle   raised  
u

sing   a   jack;   use   an   axle   stand.
List of operations
F Remove  the   finisher   from   from   each  o
f   bolts   using   the   tool   4   (depending   on  
e

quipment).
F
 
F
it   the   security   socket   5 on the
wheelbrace


1   to   slacken   the   security   bolt  
(

if fitted).
F
 
S
lacken   the   other   bolts   (no   more   than   a  
1

/4 turn)   using   the   wheelbrace   1  
o
n l y.
*


Position R
 
for
 
an
 
electronic
 
gearbox
 
or
 
P for
an
 
automatic
 
gearbox. Do
  not   use:
-
 
t
he   jack   for   any   purpose   other   than  
l

ifting   the   vehicle,
-
 
a
ny   other   jack   than   the   one  
s

upplied   by   the   manufacturer.
7
Practical information

267
Original tyre sizeSpec ification of
chains.
205/60
  R16 Maximum
  link   size:  
9

  mm
205/55
  R17
225/45
  R18 THULE
  model  
K-Summit
  K34   only
For
  more   information   on   snow   chains,   contact   a  
C

ITROËN   dealer   or   a   qualified   workshop.
Use
  only   chains   designed   to   be   fitted   the   type  
o

f
 
wheel   on   your   vehicle:
Snow chains
In wintry conditions, snow chains improve traction as well as the behaviour of the vehicle when braking.
T he   snow   chains   must   be   fitted   only  
t

o   the   front   wheels.   They   must   never  
b

e   fitted   to   "space-saver"   type   spare  
w

heels.
Advice on installation
F If  you   have   to   fit   the   chains   during   a  j
ourney,   stop   the   vehicle   on   a   flat   sur face  
o

n   the   side   of   the   road.
F
 
A
pply   the   parking   brake   and   position   any  
w

heel   chocks   to   prevent   movement   of   your  
v

ehicle.
F
 
F
it   the   chains   following   the   instructions  
p

rovided   by   the   manufacturer.
F
 
M
ove   off   gently   and   drive   for   a   few  
m

oments,   without   exceeding   30   mph  
(

50 km/h).
F
 
S
top   your   vehicle   and   check   that   the   snow  
c

hains   are   correctly   tightened.
Take
 
account
 
of
 
the
 
legislation
 
in
 
force
 
i

n your country on the use of snow
chains
 
and
 
the
 
maximum
 
running
 
speed
 
a

uthorised. Avoid
  driving   with   snow   chains   on   roads  
t

hat   have   been   cleared   of   snow,   to  
a

void   damaging   your   vehicle's   tyres   and  
t

he   road   sur face.   If   your   vehicle   is   fitted  
w

ith   alloy   wheels,   check   that   no   part   of  
t

he   chain   or   its   fixings   is   in   contact   with  
t

he   wheel   rim.
It
 
is
 
strongly
 
recommended
 
that
 
before
 
y

ou
 
leave,
 
you
 
practise
 
fitting
 
the
 
snow
 
c

hains
 
on
 
a
 
level
 
and
 
dry
 
sur face.
7
Practical information