2016 Citroen C4 check engine

35
C4-2_en_Chap01_instruments-de-bord_ed02-2015
In the event of a fault with the the SCR emissions control system
In the event of the detection of a fault
The  UREA,   SERVICE   and   diagnostic   warning  
l

amps   comes   on,   accompanied   by   an   audible  
s

ignal   and   the   display   of   the   message  
"

Emissions
 f
ault".
The
  alert   is   triggered   when   driving,   when  
t

he   fault   is   detected   for   the   first   time,   then  
w

hen   switching   on   the   ignition   for   subsequent  
j

ourneys,   while   the   fault   persists. During an authorised driving phase

(between 650 miles and 0 miles) (1 100 km and 0 km)
If a fault with the SCR system is confirmed (after 3
0   miles   (50   km)   covered   with   the   permanent d

isplay   of   the   message   signalling   a   fault),   the
 S

ERVICE   and   engine   diagnostic   warning   lamps
 c

ome   on   and   the   UREA   warning   lamp   flashes,
 a

ccompanied   by   an   audible   signal   and   the
 t

emporary   display   in   the   instrument   panel   of
 "

NO   START   IN"   and   a   distance,   indicating   the
 r

emaining   range   express   in   miles   or   kilometres
 b

efore   engine   starting   is   prevented   -   (e.g.:   "NO
 S

TART   IN   350   miles"   means   "Starting   will   be
 p

revented   in   350   miles").
A
 
system
 
that
 
prevents
 
engine
 
starting
 
is
 
activated   automatically   from   650   miles   (1   100   km)   after   confirmation   of   a   fault   with   the   SCR   emissions  
c

ontrol
 
system.
 
Have
 
the
 
system
 
checked
 
by
 
a   CITROËN   dealer   or   a   qualified   workshop   as   soon   as   possible.
If
 
it
 
is
 
a
 
temporary
 
fault,
 
the
 
alert
 
d

isappears
 
during
 
the
 
next
 
journey,
 
a

fter
 
a
 
self
 
diagnosis
 
test
 
of
 
the
 
SCR
 
e

missions
 
control
 
system. While
  driving,   this   display   appears   every  3
0 seconds   while   the   fault   with   the   SCR   system  
p

ersists.
The
  alert   is   repeated   when   switching   on   the  
ig

nition.
You
  should   go   to   a   CITROËN   dealer   or   a  
q

ualified   workshop   as   soon   as   possible.
Other wise, you will not be able to restart your
engine.
1
Instruments

91
C4-2_en_Chap03_ergonomie-et-confort_ed02-2015
Stop & Start
The heating and air conditioning systems   only   work   when   the   engine   is  
r

unning.
To
  maintain   a   comfortable   temperature  
i

n   the   passenger   compartment,   you   can  
t

emporarily   deactivate   the   Stop   &   Start  
s

ystem.
For
  more   information   on   Stop   &   Start,  
r

efer   to   the   corresponding   section.
In
 
order
 
for
 
these
 
systems
 
to
 
be
 
fully
 
effective,
 
follow
 
the
 
operation
 
and
 
maintenance
 
g

uidelines
 belo

w:
F
 
T

o
 
obtain
 
an
 
even
 
air
 
distribution,
 
take
 
care
 
not
 
to
 
obstruct
 
the
 
exterior
 
air
 
intake
 
grilles
 
l

ocated at the base of the windscreen, the nozzles, the vents and the air outlets, as well
as
 
the
 
air
 
extractor
 
located
 
in
 
the
 
boot.
F
 
D

o
 
not
 
cover
 
the
 
sunshine
 
sensor,
 
located
 
on
 
the
 
dashboard;
 
this
 
is
 
used
 
for
 
regulation
 
o

f
 
the
 
air
 
conditioning
 
system.
F
 
O

perate
 
the
 
air
 
conditioning
 
system
 
for
 
at
 
least
 
5
 
to
 
10
 
minutes,
 
once
 
or
 
twice
 
a
 
month
 
t

o
 
keep
 
it
 
in
 
per fect
 
working
 
order.
F
 
E

nsure
 
that
 
the
 
passenger
 
compartment
 
filter
 
is
 
in
 
good
 
condition
 
and
 
have
 
the
 
filter
 
e

lements
 
replaced
 
regularly.
  W

e
 
recommend
 
the
 
use
 
of
 
a
 
combined
 
passenger
 
compartment
 
filter.
 
Thanks
 
to
 
its
 
s

pecial active additive, it contributes to the purification of the air breathed by the
occupants
 
and
 
the
 
cleanliness
 
of
 
the
 
passenger
 
compartment
 
(reduction
 
of
 
allergic
 
s

ymptoms,
 
bad
 
odours
 
and
 
greasy
 
deposits).
F
 
T

o
 
ensure
 
correct
 
operation
 
of
 
the
 
air
 
conditioning
 
system,
 
you
 
are
 
also
 
advised
 
to
 
have
 
i

t
 
checked
 
regularly
 
as
 
recommended
 
in
 
the
 
maintenance
 
and
 
warranty
 
guide.
F
 
I

f
 
the
 
system
 
does
 
not
 
produce
 
cold
 
air,
 
switch
 
it
 
off
 
and
 
contact
 
a
 
CITROËN
 
dealer
 
or
 
a
 
q

ualified
 w

orkshop.
When
 
towing
 
the
 
maximum
 
load
 
on
 
a
 
steep
 
gradient
 
in
 
high
 
temperatures,
 
switching
 
off
 
the
 a
ir
 
conditioning
 
increases
 
the
 
available
 
engine
 
power
 
and
 
so
 
improves
 
the
 
towing
 
ability. The condensation created by the air
conditioning
  results   in   a   discharge  
o

f water under the vehicle which is
per fectly   normal.
If   after   an   extended   stop   in   sunshine,  
t

he   interior   temperature   is   very  
h

igh,   first   ventilate   the   passenger  
c

ompartment   for   a   few   moments.
Put   the   air   flow   control   at   a   setting   high  
e

nough   to   quickly   change   the   air   in   the  
p

assenger
 c
ompartment.
The   air   conditioning   system   does   not  
c

ontain chlorine and does not present
any   danger   to   the   ozone   layer.
Recommendations for ventilation and air conditioning
3
Ease of use and comfort

112
C4-2_en_Chap03_ergonomie-et-confort_ed02-2015
230 V / 50 Hz power socket
Connect only one device at a time to the   socket   (no   extension   or   multi-way  
c

onnector).
Connect only devices with class II
insulation
  (shown   on   the   device).
As
  a   safety   measure,   when   electrical  
c

onsumption   is   high   and   when   required  
b

y   the   vehicle's   electrical   system  
(

particular   weather   conditions,   electrical  
ov

erload...),   the   power   supply   to   the  
s

ocket   will   be   cut   off;   the   green   warning  
l

amp   goes   off.
A
 
230
 
V
 
/
 
5

0
 
Hz
 
socket
 
(maximum
 
power:
 
1

20 W)
 
is
 
fitted
 
to
 
the
 
centre
 
console.
To
 
use
 
the
 
socket:
F
 
l

ift
 
the
 
front
 
armrest
 
cover
 
for
 
access
 
to
 
its
 
c

ompartment,
F
 
c

heck
 
that
 
the
 
warning
 
lamp
 
is
 
on
 
green,
F
 
c

onnect
 
your
 
multimedia
 
or
 
other
 
electrical
 
d

evice
 
(telephone
 
charger,
 
laptop
 
c

omputer,
 
CD-DVD
 
player,
 
baby
 
food
 
w

armer...).
This
 
socket
 
works
 
with
 
the
 
engine
 
running,
 
as
 
w

ell
 
as
 
in
 
STOP
 
mode
 
on
 
Stop
 
&
 
Start.
In
 
the
 
event
 
of
 
a
 
fault
 
with
 
the
 
socket,
 
the
 
green
 
w

arning
 lam

p
 f

lashes.
Have
 
it
 
checked
 
by
 
a
 
CITROËN
 
dealer
 
or
 
a
 
q

ualified
 w

orkshop.
Ease of use and comfort

137
C4-2_en_Chap04_eclairage-et-visibilite_ed02-2015
Special position of the
windscreen wipers
This position permits release of the windscreen wiper   blades.
It
  is   used   for   cleaning   or   replacement   of   the  
b

lades.   It   can   also   be   useful,   in   winter,   to  
d

etach   the   blades   from   the   windscreen.
F
 
A
ny   action   on   the   wiper   stalk   in   the   minute  
a

fter   switching   off   the   ignition   places   the  
b

lades   vertically   on   the   screen.
F
 
T
o   park   the   blades   again,   switch   on   the  
i

gnition   and   operate   the   wiper   stalk.To
  maintain   the   effectiveness   of   the   flat  
w

iper   blades,   it   is   advisable   to:
-
 
h
andle   them   with   care,
-
 
c
lean   them   regularly   using   soapy  
w

ater,
-
 
a
void   using   them   to   retain  
c

ardboard on the windscreen,
-
 
r
eplace   them   at   the   first   signs   of  
w

e a r.
Windscreen and headlamp
wash
Low screenwash / headlamp
wash fluid level
On vehicle fitted with headlamp washers, the low   level   of   this   fluid   is   indicated   by   gauge   in  
t

he   reservoir   filler   neck   under   the   bonnet.
Checking
  and   topping   up   this   fluid   can   should  
b

e   done   with   the   engine   off.
The
  level   of   this   fluid   should   be   checked  
r

egularly,
 par
ticularly
 d
uring
 w
inter.
For
  more   information   on   checking   the  
s

creenwash   /   headlamp   wash   level,   refer   to   the  
c

orresponding
 s
ection.
F
 
P
ull   the   windscreen   wiper   stalk   towards  
y

ou.   The   windscreen   wash   then   the  
w

indscreen   wipers   operate   for   a   fixed  
p

eriod.
The   headlamp   washers   only   operate   when   the
dipped or main beam headlamps are on , with
the vehicle moving .
To   reduce   the   consumption   of   the   fluid  
b

y   the   headlamp   washers,   they   operate  
o

nly with every seventh use of the
screenwash   or   every   25   miles   (40   km)  
d

uring   a   given   journey.
4
Lighting and visibility

167
C4-2_en_Chap06_conduite_ed02-2015
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   the
 m

aximum   permitted   without   exceeding   it.
Air density decreases with altitude,
thus
 r

educing
 e
ngine
 p
erformance.
 A

bove 1 000 metres,   the   maximum   towed  
l

oad   must   be   reduced   by   10 %   for   every  
1 0

00 metres   of   altitude.
Side wind
F Take  into   account   the   increased   sensitivity  t
o   side   wind.
For
  more   information   on   weights   (and   the  
t

owed   loads   which   apply   to   your   vehicle)   refer  
t

o   the   corresponding   section.
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.
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.
6
Driving

180
C4-2_en_Chap06_conduite_ed02-2015
SituationsConsequences
To   apply   the   electric   parking   brake:
F
 
i
mmobilise   the   vehicle   and   switch   off   the   ignition.
F
 
p
ull   the   control   for   at   least   5   seconds   or   until   application   is   complete.
F
 
s
witch   on   the   ignition   and   check   the   switching   on   of   the   electric   parking  
b

rake   warning   lamps.
The
  application   is   slower   than   during   normal   operation.
To
  release   the   electric   parking   brake:
F
 
s
witch   on   the   ignition.
F
 
p
ull   the   control   and   hold   it   for   approximately   3   seconds   then   release   it.
If
  the   braking   warning   lamp   is   flashing   or   if   the   warning   lamps   do   not   come  
o

n   with   the   ignition   on,   these   procedures   will   not   work.   Place   the   vehicle  
o

n   level   ground   and   have   it   checked   by   a   CITROËN   dealer   or   a   qualified  
w

orkshop.
and possibly
flashing
Display
 
of
 
the
 
message
 
" Parking brake fault "
  and   of   the   following  
w

arning
 lam

ps: -
 
O
nly   the   automatic   application   on   switching   off   the   engine   and   automatic  
r

elease   on   acceleration   functions   are   available.
-
 
T
he   manual   application/release   of   the   electric   parking   brake   and   the  
e

mergency   braking   are   not   available.
and possibly
flashing
Battery
 
fault: -
 I

f   the   battery   warning   lamp   comes   on   you   must   stop   immediately   as   soon   as
 t

he   traffic   allows.   Stop   and   immobilise   your   vehicle   (if   necessary,   place   the
 t

wo   chocks   under   the   wheels).
-
 
A
pply   the   electric   parking   brake   before   switching   off   the   engine.
Driving

183
C4-2_en_Chap06_conduite_ed02-2015
Moving off
If position N is engaged inadvertently while   driving,   allow   the   engine   to  
r

eturn   to   idle   then   engage   position   D to
accelerate. F

Sel
ect position D for automatic
 c
hanging
 o

f   the   six   gears.
The   gearbox   then   operates   in   auto-adaptive  
m

ode,   without   any   intervention   on   the   part  
o

f   the   driver.   It   continuously   selects   the   most  
s

uitable   gear   according   to   the   style   of   driving,  t
he profile of the road and the load in the
vehicle.
For
  maximum   acceleration   without   touching  
t

he selector, press the accelerator pedal down
fully
  (kick   down).   The   gearbox   changes   down  
a

utomatically   or   maintains   the   gear   selected  
u

ntil   the   maximum   engine   speed   is   reached.
On
  braking,   the   gearbox   changes   down  
a

utomatically   to   provide   effective   engine  
b

raking.
If you release the accelerator sharply, the
gearbox
  will   not   change   to   a   higher   gear   for  
s

afety   reasons.
When
  the   engine   is   running   at   idle,   with  
t

he   brakes   released,   if   position   R,
D
or
M   is   selected,   the   vehicle   moves  
e

ven   without   the   accelerator   being  
p

ressed.
Never leave children unsupervised in
the
  vehicle   when   the   engine   is   running.
When
  carrying   out   maintenance   with  
t

he   engine   running,   apply   the   parking  
b

rake   and   select   position   P.
Never select position N while the
vehicle
  is   moving.
Never select positions P or R unless the
vehicle
  is   completely   stationary.
If
  the   parking   brake   does   not   release  
a

utomatically,   check   that   the   front   doors  
a

re   fully   closed.
F
 
W

ith
 
your
 
foot
 
on
 
the
 
brake,
 
select
 
p

osition


P or N
.
F
 
S

tart
 
the
 
engine.
If this procedure is not followed, an audible
signal
 
is
 
heard,
 
accompanied
 
by
 
a
 
message
 
in
 
t

he
 
instrument
 
panel
 
screen.
F
 W
ith
 
the
 
engine
 
running,
 
press
 
the
 
brake
 ped
al.
F

Sel

ect position R , D or M.
Automatic operation
The parking brake is released manually, the v
ehicle   moves   off.
If
  the   parking   brake   is   on   and   automatic   mode  
i

s   activated,   accelerate   progressively.
If you do not press the brake pedal when trying   to   move   the   gear   selector   out o

f position P ,
  this   warning   lamp   or   this
 s

ymbol
 ap

pears
 in t
he
 in
strument
 pan
el
 a
ccompanied
 b

y
 
a
 
message,   flashing   of   the   P
 
symbol,   the   display   of
 a

 
message
  and   an   audible   signal.
F Check  that   the   display   in   the   instrument  p
anel   agrees   with   the   position   engaged.
F
 
G
radually   release   the   brake   pedal.
6
Driving

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