2015 Citroen C4 key battery

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It has 3 positions:
- position 1 (Stop):
  insert   and   removing   the  
k

ey,
-
position 2 (Ignition on) :
  steering   column  
u

nlocked,   ignition   on,   Diesel   preheating,  
e

ngine
 r
unning,
-
position 3 (Starting) .
Ignition on position
It allows the use of the vehicle's electric e
quipment   or   portable   devices   to   be   charged.
Once
  the   state   of   charge   of   the   battery   drops  
t

o   the   reserve   level,   the   system   switches   to  
e

nergy   economy   mode:   the   power   supply   is  
c

ut   off   automatically   to   preserve   the   remaining  
b

attery   charge.
Starting-switching off the engine with the key
Ignition switch
Avoid attaching heavy objects to the key,   which   would   weigh   down   on   its  
b

lade   in   the   ignition   switch   and   could  
c

ause   a   malfunction.
Switching
  off   the   engine   leads   to   a   loss  
o

f   braking   assistance.
9
driving

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Stop & Start
Operation
Going into engine STOP mode
The "ECO"  warning   lamp   comes   on i
n   the   instrument   panel   and   the   engine g

oes   into   standby   automatically:
-

w

ith a manual gearbox , at speeds below
12
 
m

ph  
(
20  
k
m/h),  
o
r  
v
ehicle  
s
tationary  
w
ith  
P

ureTech   130   petrol   and   BlueHDi   Diesel  
v

ersions,   when   you   put   the   gear   lever   into  
n

eutral and release the clutch pedal,
If your vehicle is fitted with the
system,
  a   time   counter   calculates
 t

he   sum   of   the   periods   in   STOP
 m

ode   during   a   journey.   It   resets
 i

tself   to   zero   every   time   the
 i

gnition   is   switched   on   with   the
 k

ey   or   the   "START/STOP"   button.
-

w

ith an electronic gearbox , at a speed
below
  5   mph   (8   km/h),   when   you   press  
t

he
 
brake   pedal   or   put   the   gear   lever   into  
p

osition N .
Special cases: STOP mode
unavailable
STOP mode is not invoked when:
-  t he   vehicle   is   on   a   steep   slope   (up   or  
d

ow n),
-
 
t
he   driver's   door   is   open,
-
 
t
he   driver's   seat   belt   is   not   fastened,
-
 
t
he   vehicle   has   not   exceeded   6   mph  
(

10 km/h)   since   the   last   engine   start   (using  
t

he   key   or   the   "   START/STOP"   button),
-
 
t
he   electric   parking   brake   is   applied   or  
be

ing
 a
pplied,
-
 
t
he   engine   is   needed   to   maintain   a  
c

omfortable   temperature   in   the   passenger  
c

ompartment,
-
 
d
emisting   is   active,
-
 
s
ome   special   conditions   (battery   charge,  
e

ngine   temperature,   braking   assistance,  
a

mbient   temperature...)   where   the   engine   is  
n

eeded   to   assure   control   of   a   system.
In this case, the "ECO"
 

warning   lamp  
f

lashes for a few seconds, then
goes
  off.
This operation is perfectly normal.
The
 
Stop
 
&
 
Start system
 
puts
 
the
 
engine
 
temporarily
 
into
 
standby
 
-
 
STOP
 
mode
 
-
 
during
 
stops
 
in
 
the
 
traffic   (red   lights,   traffic   jams,   or   other...).  
The
 
engine
 
restarts
 
automatically
 
-
 
START
 
mode
 
-
 
as
 
soon
 
as
 
you
 
want
 
to
 
move
 
off.
 
The
 
restart
 
takes
 
place   instantly,   quickly   and   silently.
Per fect
 
for
 
urban
 
use,
 
the
 
Stop
 
&
 
Start
 
system
 
reduces
 
fuel
 
consumption
 
and
 
exhaust
 
emissions
 
as
 
well
  as   the   noise   level   when   stationary.
Never
 
refuel
 
with
 
the
 
engine
 
in
 
STOP
 
m

ode;
 
you
 
must
 
switch
 
off
 
the
 
ignition
 
w

ith
 
the
 
key
 
or
 
the
 
"START/STOP"
 
b

utton.
With
 
an
 
electronic
 
gearbox,
 
for
 
your
 
c

omfort
 
during
 
parking
 
manoeuvres,
 
S

TOP
 
mode
 
is
 
not
 
available
 
for
 
a
 
few
 
s

econds
 
after
 
coming
 
out
 
of
 
reverse
 
g

e a r.
STOP
 
mode
 
does
 
not
 
affect
 
the
 
f

unctionality of the vehicle, such as
braking,
 
power
 
steering,
 
for
 
example.
driving

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Maintenance
In the event of a malfunction with the system, the "ECO OFF"   switch   warning   lamp   flashes,  
t

hen   comes   on   continuously.
Ha

ve   it   checked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Operating fault
This system requires a specific battery with a special   specification   and   technology   (reference  
n

umbers   available   from   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop).
Fitting
  a   battery   not   listed   by  
C

ITROËN introduces   the   risk   of   malfunction   of  
t

he   system.Before
  doing   anything   under   the  
b

onnet, deactivate the Stop & Start
system   to   avoid   any   risk   of   injury  
r

esulting   from   automatic   operation   of  
S

TART   mode.
The   Stop   &   Start   system   makes   use  
o

f   advanced   technology.   All   work   on  
t

his   type   of   battery   must   be   done   only  
b

y   a   CITROËN   dealer   or   a   qualified  
w

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

ehicle
 
may
 
stall.
 
All
 
of
 
the
 
instrument
 p

anel
 
warning
 
lamps
 
come
 
on.
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

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FREqUENTLY ASKED q UESTIONS
357
q

UESTION
ANSWER SOLUTION
With
 
the
 
engine
 
off,
 
the
 
system

 
switches
 
off
 
after
 
a

 
few
 
minutes
 
of
 
use.
When
 
the
 
engine
 
is
 
switched
 
off,
 
the
 
system's
 
operating
 
time
 
depends
 
on
 
the

 
battery
 
charge.
The
 
switch-off
 
is
 
normal:
 
the
 
system
 
switches
 
to
 
economy
 
mode
 
and
 
switches

 
off
 
to
 
prevent
 
discharging
 
of
 
the
 
vehicle's
 
battery.
Start
 
the
 
vehicle's
 
engine
 
to
 
increase
 
the
 
battery  
charge.
USB, portable player

, connection key
Playback
 
of
 
my
 
USB
 
memory

 
stick
 
starts
 
only
 
after

 
a
 
very
 
long
 
wait
 
(around

 
2
 
to
 
3
 
minutes).
Some
 
files
 
supplied
 
with
 
the
 
memory
 
stick
 
may
 
greatly
 
slow
 
down
 
access
 
to

 
reading
 
the
 
memory
 
stick
 
(multiplication
 
by
 
10
 
of
 
the
 
catalogue
 
time).
Delete
 
the
 
files
 
supplied
 
with
 
the
 
memory
 
stick
 
and

 
limit
 
the
 
number
 
of
 
sub-folders
 
in
 
the
 
file
 
structure

 
on
 
the
 
memory
 
stick.
When
 
I
 
connect
 
my
 
iPhone as telephone and
to

 
the
 
USB
 
port
 
at
 
the
 
same

 
time,
 
I
 
am
 
unable
 
to

 
play
 
the
 
music
 
files.
When
 
the
 
iPhone
 
connects
 
automatically
 
as
 
a
 
telephone,
 
it
 
forces
 
the
 
streaming

 
function.
 
The

 
streaming
 
function
 
takes
 
the
 
place
 
of
 
the
 
USB
 
function which is then not useable, there is a period without sound of t\
he
track

 
being
 
played
 
with
 
Apple® players.
Disconnect   and   reconnect   to   the   USB   port   (the  
USB

  function   takes   priority   over   streaming).

3
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C4-2-add_en_Chap03_ouvertures_ed01-2015
Following disconnection of the vehicle battery, replacement of the remote control battery or in the event of a remote control malfunction, you can no longer unlock, lock or locate your vehicle.
Remember to refit the mat below the armrest after removing the reinitialised electronic key.
Remote control problem /
reinitialisation
 Place the back-up key (integral with the remote control) in the lock to unlock your vehicle.
 Open the front armrest. ● Raise the mat by its tongue and remove it. ● Place the electronic key on the back-up reader.  Switch on the ignition by pressing
the " START/STOP " button. The electronic key is fully operational again.
If the problem persists, contact a CITROËN dealer or a qualified workshop as soon as possible.

Driving
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C4-2-add_en_Chap09_conduite_ed01-2015
Stop & Start
Operation
Going into engine STOP mode
The "ECO" warning lamp comes on in the instrument panel and the engine goes into standby automatically:
- with a manual gearbox , at speeds below 12 mph (20 km/h), or vehicle stationary with PureTech 130 petrol and BlueHDi 115 and 120 Diesel versions, when you put the gear lever into neutral and release the clutch pedal, - with an electronic gearbox , at a speed below 5 mph (8 km/h), when you press the brake pedal or place the gear lever in position N . - with an automatic gearbox, vehicle stationary, when you press the brake pedal or place the gear lever in position N .
If your vehicle is fitted with the system, a time counter calculates the sum of the periods in STOP
Special cases: STOP mode unavailable
STOP mode is not invoked when: - the vehicle is on a steep slope (up or down), - the driver's door is open, - the driver's seat belt is not fastened, - the vehicle has not exceeded 6 mph (10 km/h) since the last engine start (using the key or the "START/STOP" button), - the electric parking brake is applied or being applied, - the engine is needed to maintain a comfortable temperature in the passenger compartment, - demisting is active, - some special conditions (battery charge, engine temperature, braking assistance, ambient temperature...) where the engine is needed to assure control of a system.
In this case, the "ECO" warning lamp flashes for a few seconds, then goes of f. This operation is perfectly normal.
The Stop & Start system puts the engine temporarily into standby - STOP mode - during stops in the traffic (red lights, traffic jams, or other...). The engine restarts automatically - START mode - as soon as you want to move off. The restart takes place instantly, quickly and silently. Per fect for urban use, the Stop & Start system reduces fuel consumption and exhaust emissions as well as the noise level when stationary.
STOP mode does not affect the functionality of the vehicle, such as braking, power steering, for example. Never refuel with the engine in STOP mode; you must switch off the ignition
with the key or the "START/STOP" button.
With an electronic gearbox, for your comfort during parking manoeuvres, STOP mode is not available for a few seconds after coming out of reverse g e a r.
mode during a journey. It resets itself to zero every time the ignition is switched on with the key or the "START/STOP" button.

Driving
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C4-2-add_en_Chap09_conduite_ed01-2015
Maintenance
In the event of a malfunction with the system, the "ECO OFF" switch warning lamp flashes, then comes on continuously. Have it checked by a CITROËN dealer or a qualified workshop.
Operating fault
This system requires a specific battery with a special specification and technology (reference numbers available from a CITROËN dealer or a qualified workshop). Fitting a battery not listed by CITROËN introduces the risk of malfunction of the system.
Before doing anything under the bonnet, deactivate the Stop & Start system to avoid any risk of injury resulting from automatic operation of START mode.
The Stop & Start system makes use of advanced technology. All work on this type of battery must be done only by a CITROËN dealer or a qualified
workshop.
In the event of a fault in STOP mode, the vehicle may stall. All of the instrument panel warning lamps come on. Depending on version, an alert message may also be displayed asking you to put the gear lever into position Nand put your foot on the brake pedal.
It is then necessary to switch off the ignition, then restart the engine using the key or the "START/STOP" button.
Reactivation
The system is reactivated automatically at 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 by the switch warning lamp going off and the display of a message.
Deactivation
At any time, press the "ECO OFF" switch to deactivate the system. This is confirmed by the switch warning lamp coming on accompanied by the display of a message.
If the system has been deactivated in STOP mode, the engine restarts immediately.