2016 Citroen C4 warning

190
C4-2_en_Chap06_conduite_ed02-2015
Maintenance
In the event of a malfunction with the system, the "ECO OFF"   switch   warning   lamp   flashes,  
t

hen   comes   on   continuously.
have
  it   checked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Operating fault
This system requires the use of a 12 V battery of   specific   technology   and   characteristics  
(

reference   numbers   available   from   a   CITROËN  
d

ealer   or   a   qualified   workshop).
Fitting
  a   battery   not   listed   by   CITROËN would  
i

ntroduces   the   risk   of   faults   with   the   system.
Before
  doing   any   work   under   the  
b

onnet, deactivate the Stop & Start
system   to   avoid   the   risk   of   injury   related  
t

o   an   automatic   change   to   START  
m

ode.
The   Stop   &   Start   system   makes   use   of  
a

n   advanced   technology.   All   work   on  
t

his   type   of   battery   must   only   be   carried  
o

ut   by   a   CITROËN   dealer   or   a   qualified  
w

orkshop.
In
 
the
 
event
 
of
 
a
 
fault
 
in
 
STOP
 
mode,
 
t

he
 
vehicle
 
may
 
stall.
 
All
 
of
 
the
 
i

nstrument
 
panel
 
warning
 
lamps
 
come
 
o

n.
Depending
 
on
 
version,
 
an
 
alert
 
m

essage
 
may
 
also
 
be
 
displayed
 
asking
 
y

ou
 
to
 
put
 
the
 
gear
 
lever
 
into
 
position
 
N
and
 
put
 
your
 
foot
 
on
 
the
 
brake
 
pedal.
It is then necessary to switch off the
ignition,
 
then
 
restart
 
the
 
engine
 
using
 
t

he
 
key
 
or
 
the
 
"START/STOP"
 
button.
Reactivation
The system is reactivated automatically a t   every   new   start   using   the   key   or   the  
"

START/STOP"   button.
Press the "ECO OFF"
  switch   again.
The
 
system   is   active   again;   this   is   confirmed  
b

y
 
the
  switch   warning   lamp   going   off   and   the  
d

isplay   of   a   message.
Driving

191
C4-2_en_Chap06_conduite_ed02-2015
Hill start assist
On an ascending slope, with the vehicle
stationar y, the vehicle is held for a brief
moment when you release the brake pedal:
- 
i
f   you   are   in   first   gear   or   neutral   with   a  
m

anual
 g
earbox,
-

i
f you are in position D or M with an
automatic
  gearbox.
Operation
On a descending slope, with the vehicle
stationary and reverse gear engaged, the
vehicle is held for a brief moment when you
release the brake pedal.
Operating fault
If a fault occurs with the system, these warning lamps   come   on.   Contact   a   CITROËN   dealer  
o

r   a   qualified   workshop   to   have   the   system  
c

hecked.
System
 
which
 
keeps
 
your
 
vehicle
 
immobilised
 
t

emporarily
 
(approximately
 
2
 
seconds)
 
when
 
s

tarting
 
on
 
a
 
gradient,
 
the
 
time
 
it
 
takes
 
to
 
m

ove
 
your
 
foot
 
from
 
the
 
brake
 
pedal
 
to
 
the
 
a

ccelerator
 ped

al.
This
 
function
 
is
 
only
 
active
 
when:
-
 
t

he
 
vehicle
 
is
 
completely
 
stationary,
 
with
 
y

our
 
foot
 
on
 
the
 
brake
 
pedal,
-
 
w

hen
 
certain
 
conditions
 
of
 
gradient
 
are
 
m

et,
-
 
w

ith
 
the
 
driver’s
 
door
 
closed.
The hill start assist function cannot be
deactivated.
Do
 
not
 
leave
 
the
 
vehicle
 
while
 
it
 
is
 
being
 
h

eld
 
in
 
the
 
hill
 
start
 
assist
 
phase.
If you need to leave the vehicle while
the
 
engine
 
is
 
running,
 
apply
 
the
 
parking
 b
rake
 
manually
 
then
 
ensure
 
that
 
the
 p
arking
 
brake
 
warning
 
lamp
 
is
 
on
 
(not
 
f

lashing)
 
in
 
the
 
instrument
 
panel.
6
Driving

193
C4-2_en_Chap06_conduite_ed02-2015
The flashing and then fixed illumination   of   the   under-inflation w

arning   lamp   accompanied   by   the
 i

llumination   of   the   service   warning
 l

amp   indicates   a   fault   with   the   system.
Operating fault
The alert is given by the fixed illumination   of   this   warning   lamp,  
a

ccompanied   by   an   audible   signal,  
a

nd   depending   on   equipment,   the  
d

isplay   of   a   message.
Under-inflation alert
In the event of a problem on one of the tyres, the   symbol   or   the   message   appears,   according  
t

o   equipment,   to   identify   it.
F
 
R
educe   speed,   avoid   sudden   steering  
m

ovements   or   harsh   brake   applications.
F
 
S
top   as   soon   as   it   is   safe   to   do   so. In
  this   case,   monitoring   of   the   tyre   pressures   is  
n

ot   assured.
F  
I
f   you   have   a   compressor   (the   one   in   the  
t

emporary   puncture   repair   kit   for   example),  
c

heck   the   four   tyre   pressures   when   cold.
 I

f   it   is   not   possible   to   check   the   tyre  
p

ressures   at   the   time,   drive   carefully   at  
r

educed
 s
peed.


or
F
I
n the event of a puncture, use the
temporary   puncture   repair   kit   or   the   spare  
w

heel   (according   to   equipment).
Go   to   a   CITROËN   dealer   or   a   qualified  w
orkshop to   have   the   system   checked   or,  
f

ollowing   the   repair   of   a   puncture,   to   have   the  
o

riginal   wheel,   equipped   with   a   sensor,   refitted.
Any
  tyre   repair   or   replacement   on   a   wheel  
f

itted   with   this   system   must   be   carried   out   by   a  
C

ITROËN   dealer   or   a   qualified   workshop.
If
  after   changing   a   tyre,   a   wheel   is   not   detected  
b

y   your   vehicle   (fitting   snow   tyres   for   example),  
y

ou   must   have   the   system   reinitialised   by   a  
C

ITROËN   dealer   or   a   qualified   workshop.
The loss of pressure detected does not
always
  lead   to   visible   deformation   of  
t

he   tyre.
Do
  not   rely   on   just   a   visual   check.This alert is also displayed when one or
more
  wheels   is   not   fitted   with   a   sensor  
(

for   example,   a   space-saver   or   steel  
spar

e
 w
heel).
The   alert   is   maintained   until   the   tyre   or  t
yres concerned is reinflated, repaired
or   replaced.
The
  spare   wheel   (space-saver   type   or   a  
s

teel   rim)   does   not   have   a   sensor.
6
Driving

194
C4-2_en_Chap06_conduite_ed02-2015
Lane departure warning system
Activation
Deactivation
DetectionOperating fault
System which detects the involuntary crossing o
f   longitudinal   traffic   lane   markings   on   the  
g

round   (solid   or   broken   line).
Sensors,
  fitted   below   the   front   bumper,   trigger  
a

  warning   if   the   vehicle   drifts   over   a   lane  
m

arking   (speed   higher   than   50   mph   (80   km/h)).
This
  system   is   particularly   useful   on   motor ways  
a

nd   main   roads. In
  the   event   of   a   malfunction,   the  
s

ervice   warning   lamp   comes   on,  
a

ccompanied   by   an   audible   signal  
a

nd   a   message   in   the   screen.
Contact   a   CITROËN   dealer   or   a   qualified  
w

orkshop.
The   lane   departure   warning   system  
c

annot   in   any   circumstances   replace  
t

he   need   for   vigilance   on   the   part   of   the  
d

river.
It
  is   necessary   to   observe   driving  
r

egulations   and   take   a   break   every  
t

wo hours. The
  detection   may   be   impeded:
- i f   the   sensors   are   dirty   (mud,   snow...),
-
 
i
f   the   markings   on   the   ground   are  
w

orn,
-

i
f there is little contrast between the
markings
  on   the   ground   and   the  
r

oad   sur face.
You
  are   warned   by   the   vibration   of   the   driver's  
s

eat   cushion:
-
 
o
n   the   right-hand   side,   if   the   marking   on  
t

he   ground   has   been   crossed   on   the   right,
-
 
o
n   the   left-hand   side,   if   the   marking   on   the  
g

round   has   been   crossed   on   the   left.
No
  warning   is   transmitted   while   the   direction  
i

ndicator   is   active   and   for   approximately  
2

0 seconds after the direction indicator is
switched
  off.
A
  warning   may   be   transmitted   if   a   direction  
m

arking   (e.g.   arrow)   or   non-standard   marking  
(

e.g.   graffiti)   is   crossed.
F
 
W
hen   switching   the   ignition   on   or   with  
t

he   engine   running,   press   this   button;   the  
i

ndicator   lamp   comes   on.
F  
P
ress   this   button   again,   the   indicator   lamp  
g

oes   off.
The   status   of   the   system   remains   in   the  m
emory   when   the   ignition   is   switched   off.
Driving

195
C4-2_en_Chap06_conduite_ed02-2015
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.
6
Driving

196
C4-2_en_Chap06_conduite_ed02-2015
No alert will be given in the following situations:
-  i n   the   presence   of   immobile   objects  
(

parked   vehicles,   barriers,   street   lamps,  
r

oad
 s
igns...),
-
 
w
ith   vehicles   moving   in   the   opposite  
d

irection,
-
 
d
riving   on   a   sinuous   road   or   a   sharp  
c

o r n e r,
The
 
alert
 
is
 
given
 
by
 
a
 
warning
 
lamp
 
which
 
c

omes
 
on
 
in
 
the
 
door
 
mirror
 
on
 
the
 
side
 
in
 
q

uestion
 
as
 
soon
 
as
 
a
 
vehicle
 
-
 
car,
 
lorry,
 

cycle
 
-
 
is
 
detected.
For
 
this,
 
the
 
following
 
conditions
 
must
 
be
 
met:
-
 
a

ll
 
the
 
vehicles
 
must
 
be
 
moving
 
in
 
the
 
sa

me
 d

irection,
-
 
t

he
 
speed
 
of
 
your
 
vehicle
 
is
 
between
 
7
 
and
 
7

5
 
mph
 
(12
 
and
 
140
 
km/h),
-
 
w

hen
 
you
 
overtake
 
a
 
vehicle
 
with
 
a
 
speed
 
d

ifference
 
of
 
less
 
than
 
6
 
mph
 
(10
 
km/h),
-
 
w

hen
 
a
 
vehicle
 
overtakes
 
you
 
with
 
a
 
speed
 
d

ifference
 
of
 
less
 
than
 
15
 
mph
 
(25
 
km/h),
-
 
t

he
 
traffic
 
must
 
be
 
flowing
 
normally,
-
 
i

n
 
the
 
case
 
of
 
an
 
overtaking
 
manoeuvre,
 i
f
 
this
 
is
 
prolonged
 
and
 
the
 
vehicle
 
being
 ov
ertaken
 
remains
 
in
 
the
 
blind
 
spot,
-
 
y

ou
 
are
 
driving
 
on
 
a
 
straight
 
or
 
slightly
 
c

urved road,
-
 
y

our
 
vehicle
 
is
 
not
 
pulling
 
a
 
trailer,
 
a
 
c

aravan... -
 w hen   overtaking   (or   being   overtaken   by)   a  v
ery   long   vehicle   (lorry,   coach...)   which   is  
a

t   the   same   time   detected   at   the   rear   in   the  
b

lind   spot   angle   and   present   in   the   driver's  
f

orward field of vision,
-
 
i
n   very   heavy   traffic:   vehicles   detected   in  
f

ront and behind are confused with a lorry
or
  a   stationary   object,
-
 
w
hen   overtaking   quickly.
Driving

197
C4-2_en_Chap06_conduite_ed02-2015
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,   hail...).
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.
6
Driving

207
C4-2_en_Chap06_conduite_ed02-2015
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
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 CITROËN 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.
Deactivation/Activation of the
front and rear parking sensors
6
Driving