2016 Citroen C4 CACTUS engine

176
AdBlue® additive and SCR system
f
or
 
BlueHDi   Diesel   engines
To assure respect for the environment and c
onformity   with   the   new   Euro   6   emissions  
s

tandard,   without   adversely   affecting   the  
p

er formance   or   fuel   consumption   of   Diesel  
e

ngines,   CITROËN   has   taken   the   decision   to  
e

quip   its   vehicles   with   an   effective   system   that  
a

ssociates   SCR   (Selective   Catalytic   Reduction)  
w

ith   a   particle   filter   (FAP)   for   the   treatment   of  
e

xhaust   gases.
Presentation of the SCR system
Using an additive called AdBlue® containing urea, a
 
catalytic
 
converter
 
turns
 
up
 
to
 
85%   of   nitrous o

xides
 
(NOx)
 
into
 
nitrogen
 
and
 
water,   which   are
 h

armless
 
to
 
health
 
and
 
the
 
environment. Once
  the   AdBlue
® tank is empty, a s
ystem
 
required
 
by   regulations   prevents  
s

tarting
 
of
 
the
 
engine.
If the SCR is faulty, the level of
emissions
 
from
 
your   vehicle   will   no  
l

onger
 
meet
 
the
 
Euro   6   standard:   your  
v

ehicle
 
becomes
 
polluting.
In
 
the
 
event
 
of
 
a
 
confirmed   fault  
w

ith
 
the
 
SCR
 
system,   you   must   go  
t

o
 
a
 
CITROËN
 
dealer   or   a   qualified  
w

orkshop
 
as
 
soon   as   possible:   after   a  
r

unning
 
distance
 
of   650   miles  
(1
 
100
 
km),
 
a
 
system   will   be   triggered  
a

utomatically
 
to
 
prevent   engine   starting.
The
 
AdBlue® additive is held in a special t
ank
 
located
  under   the   boot   at   the   rear   of  
t

he
 
vehicle.
 
It   has   a   capacity   of   17   litres:   this  
p

rovides
 
a
 
driving   range   of   about   12   500   miles  
(

20
 
000
 
km),
  after   which   an   alert   is   triggered  
w

arning
 
you
 
when   the   reserve   remaining   is  
e

nough
 
for
 
just   1   500   miles   (2   400   km).
During
 
each
  scheduled   service   of   your   vehicle  
b

y
 
a
 
CITROËN   dealer   or   a   qualified   workshop,  
t

he
 
AdBlue
® additive tank is refilled in order to a
llow
 
normal   operation   of   the   SCR   system.
If
 
the
 
estimated   mileage   between   two   services  
i

s
 
greater
 
than   12   500   miles   (20   000   km),   we  
r

ecommend
  that   you   go   to   a   CITROËN   dealer  
o

r
 
a
 
qualified   workshop   to   have   the   necessary  
t

op-up
 
carried   out.
Practical information

177
Range indicators
Once the AdBlue® tank is on reserve or after d
etection
 
of
 
a
 
fault   with   the   SCR   emissions  
c

ontrol
 
system,
 
when   the   ignition   is   switched  
o

n,
 
an
 
indicator
 
displays   an   estimate   of   the  
d

istance
 
that
 
can
 
be   covered,   the   range,   before  
e

ngine
 
starting
 
is
 
prevented.
In
 
the
 
event
 
of
 
simultaneous   system   fault   and  
l

ow
 
AdBlue
® level, the shortest range figure is t
he
 
one
 
displayed. Range greater than 1 500 miles (2 400 km)
When
  the   ignition   is   switched   on,   no  
i

nformation   on   range   is   displayed   automatically  
i

n   the   instrument   panel.
The
  engine   start   prevention   system  
r

equired   by   regulations   is   activated  
a

utomatically   once   the   AdBlue
® tank is e
m pt y.
In the event of the risk of non-starting related to a lack of AdBlue®
Remaining range between 350 and 1500 miles (600 and 2 400 km)
When switching on the ignition, the U REA warning   lamp   comes   on,   accompanied  
b

y   an   audible   signal   and   the   display   of   a  
m

essage   (e.g.:   "Top   up   emissions   additive:  
S

tarting   prevented   in   900   miles")   indicating  
t

he   remaining   range   expressed   in   miles   or  
k

ilometres.
When
  driving,   the   message   is   displayed   every  
2

00   miles   (300   km)   until   the   additive   tank   has  
be

en
 t
opped-up.
Go
  to   a   CITROËN   dealer   or   a   qualified  
w

orkshop   to   have   the   AdBlue
® tank topped-up.
Y
ou
 
can
 
also
 
top-up
 
the
 
tank
 
yourself.
For
 
more
 
information
 
on
 
topping-up   the  
Ad

Blue
® additive, refer to the corresponding s
ection.
7
Practical information

178
Remaining range between 0 and 350 miles (0 and 600 km)Breakdown related to a lack of AdBlue® additive
To be able to start the engine, we   recommend   that   you   call   on  
a

  CITROËN   dealer   or   a   qualified  
w

orkshop   for   the   top-up   required.
If
  you   carry   out   the   top-up   yourself,   it  
i

s   essential   to   add   at   least   3.8   litres   of  
Ad

Blue
® to the tank.
W
hen
 
switching
 
on
 
the
 
ignition,
 
the
 
SERVICE
 
w

arning
 
lamp
 
comes
 
on
 
and
 
the
 
UREA
 
warning
 
l

amp
 
flashes,
 
accompanied
 
by
 
an
 
audible
 
s

ignal
 
and
 
the
 
display
 
of
 
a
 
message
 
(e.g.
 
"Top
 
u

p
 
emissions
 
additive:
 
Starting
 
prevented
 
in
 
3

50
 
miles")
 
indicating
 
the
 
remaining
 
range
 
e

xpressed
 
in
 
miles
 
or
 
kilometres.
When
 
driving,
 
the
 
message
 
is
 
displayed
 
every
 
3

0
 
seconds
 
until
 
the
 
additive
 
tank
 
has
 
been
 
t

opped-up.
Go
 
to
 
a
 
CITROËN
 
dealer
 
or
 
a
 
qualified
 
w

orkshop
 
to
 
have
 
the
 
AdBlue
® tank topped-up.
Y
ou
 
can
 
also
 
top-up
 
the
 
tank
 
yourself.
Other wise you will not be able to restart your
engine. When
  switching   on   the   ignition,   the   SERVICE  
w

arning   lamp   comes   on   and   the   UREA   warning  
l

amp   flashes,   accompanied   by   an   audible  
s

ignal   and   the   display   of   the   message   "Top   up  
e

missions   additive:   Starting   prevented".
The
 Ad
Blue
® tank
 is  empty:  t he  s ystem  r equired  b
y
 
regulations   prevents   engine   starting.
For
 
more
 
information
 
on
 
topping-up
 
the
 
Ad

Blue
® additive, refer to the corresponding s
ection.
Practical information

179
In the event of a fault with the SCR emissions control system
In the event of the detection
of a faultDuring an authorised driving phase (between
650 miles and 0 miles) (1 100 km and 0 km)
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   self-diagnosis   of   the   SCR   system.
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   the  
f

ault   is   detected   for   the   first   time,   then   when  
s

witching   on   the   ignition   for   subsequent  
j

ourneys,   while   the   fault   persists. 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
 d

isplay   of   a   message   (e.g.:   "Emissions   fault:
 S

tarting   prevented   in   150 miles")   indicating   the
 r

emaining   range   express   in   miles   or   kilometres.
While
  driving,   the   message   is   displayed   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. Starting prevented
To
  be   able   to   start   the   engine,   you   must   call   on  
a

  CITROËN   dealer   or   a   qualified   workshop.
You
  have   exceeded   the   authorised  
d

riving   limit:   the   starting   prevention  
s

ystem   inhibits   engine   starting.
Every time the ignition is switched on, the SERVICE and   engine   diagnostic   warning   lamps   come   on   and t

he   UREA   warning   lamp   flashes,   accompanied   by
 a

n   audible   signal   and   the   display   of   the   message
 "

Emissions   fault:   Starting   prevented".
7
Practical information

182
F Obtain  a   bottle   of   AdBlue®. After first c
hecking
 
the
 
use-by
 
date,
  read   carefully  
t

he instructions on use on the label before
pouring
 
the
 
contents
 
of
 
the   bottle   into   your  
v

ehicle's
 Ad

Blue
® tank.
I
mportant :
 
if
 
your   vehicle's   AdBlue
®
tank
 
is
 
completely
 
empty
 
-
 
which
 
is
 
c

onfirmed
 
by
 
the
 
alert
 
messages
 
and  
t

he
 
impossibility
 
of
 
starting
 
the
 
engine,  
y

ou
 
must
 
add
 
at
 
least
 
3.8
 
litres
 
(so
 
t

wo 1.89
 
litre
 
bottles). If
  any   additive   is   split   or   splashed,   wash  
i

mmediately  
w
ith  
c
old  
w
ater  
o
r  
w
ipe  
w
ith  
a

  damp   cloth.
If   the   additive   has   crystallised,   clean   it  
o

ff   using   a   sponge   and   hot   water.Important:
 i
n the event of a top-up
after a breakdown because of a lack
of additive ,   signalled   by   the   message
 "

Top   up   emissions   additive:   Starting
 p

revented",   you   must   wait   around
 5

 minutes
 
before
 
switching
 
on
 
the
 
ignition,
 w

ithout opening the driver's door,
locking the vehicle or introducing the
key into the ignition switch .
Switch   on   the   ignition,   then,   after
 1

0 seconds,   start   the   engine.
Never   dispose   of   AdBlue
® additive b
ottles
 
in
 
the
 
household
 
waste.   Place  
t

hem
 
in
 
a
 
special
 
container   provided  
t

his
 p

urpose
 o

r
 t

ake
 t

hem
 t
o
 y
our
 d
ealer.
F
 
A

fter
 
emptying
 
the
 
bottle,
 
wipe
 
away
 
any
 
s

pillage
 
around
 
the
 
tank
 
filler
 
using
 
a
 
damp
 
c

loth.
F
 
R

efit
 
the
 
blue
 
cap
 
to
 
the
 
tank
 
and
 
turn
 
it
 
a
 
6th of a turn clockwise, to its stop.
F
 R
efit   the   black   cap   and   turn   it   a   quarter   of  
a

 
turn   clockwise   without   pressing.   Ensure  
t

hat   the   indicator   on   the   cap   lines   up   with  
t

he   indicator   on   the   support.
F
 
D

epending   on   equipment,   return   the   spare  
w

heel   and/or   the   storage   box   to   the   bottom  
o

f
  the   boot.
F
 
R

efit   the   boot   carpet   and   close   the   tailgate.
Practical information

188
1. Sealing
Repair procedure
Avoid removing any foreign bodies which   have   penetrated   into   the   tyre.F

U
ncoil the white pipe G  
f
ully.
F  
U
nscrew   the   cap   from   the   white   pipe.
F
C
onnect the white pipe to the valve of the
tyre   to   be   repaired.
F
 
S

witch   off   the   ignition.
F
T
urn the selector A to the
"Sealant"
 p
osition.
F  
C
heck   that   the   switch   B is in
position "O" . F  
C
onnect   the   compressor's   electric   plug   to  
t

he   vehicle's   12   V   socket.
F  
S
tart   the   vehicle   and   leave   the   engine  
r

unning.
Take care, this product is harmful if s
wallowed   and   causes   irritation   to   the   eyes.
Keep
  this   product   out   of   the   reach   of  
c

hildren.Do not start the compressor before c onnecting   the   white   pipe   to   the   tyre  
v

alve:   the   sealant   product   would   be  
e

xpelled   through   the   pipe.
In the event of a breakdown

191
Checking tyre pressures / inflating accessories
You can also use the compressor, without injecting   any   product,   to:
-
 
c
heck   or   adjust   the   pressure   of   your   tyres,
-
 
i
nflate   other   accessories   (balls,   bicycle  
t

yres...). F

T
urn the selector A to the
"Air" position.
F
 
U
ncoil   the   black   pipe   H  
f
ully.F
 C onnect   the   compressor's   electrical  
c

onnector   to   the   vehicle's   12   V   socket.
F
 
S
tart   the   vehicle   and   let   the   engine   run.
F
 
A
djust   the   pressure   using   the   compressor  
(

to   inflate:   switch   B in position "I";
 
t

o deflate:   switch   B in position "O"
 
and  
p

ress button C),
  according   to   the   vehicle's  
t

yre   pressure   label   or   the   accessory's  
p

ressure   label.
F
 
R
emove   the   kit   then   stow   it.Should
  the   pressure   of   one   or   more  
t

yres   be   adjusted,   it   is   necessary   to  
r

einitialise   the   under-inflation   detection  
s

ystem.
For
  more   information   on   under-inflation  
d

etection,   refer   to   the   corresponding  
s

ection.
F
 
C
onnect   the   black   pipe   to   the   valve   of   the  
w

heel   or   accessory.
 I

f   necessary,   fit   one   of   the   adaptors  
s

upplied   with   the   kit   first.
8
In the event of a breakdown

193
Taking out the wheel
F Unclip  the   tool   storage   box   (standard   spare  w
heel).
F
 
U
nscrew   the   central   nut.
F
 
R
emove   the   fixing   parts   (nut   and   bolt).
F
 
P
ull   the   spare   wheel   towards   you   from   the  
r

e a r.
F
 
T
ake   the   wheel   out   of   the   boot.
The
 
spare
 
wheel
 
is
 
installed
 
in
 
the
 
boot
 
under
 t
he
 
floor.
Depending
 
on
 
the
 
engine,
 
the
 
spare
 
wheel
 
is
 
a

 
standard
 
wheel
 
or
 
the
 
"space-saver"
 
type
 
(

BlueHDi
 
100).
Access to the spare wheel
Putting the wheel back in place
F Put   the   wheel   back   in   its   housing.
F  U nscrew   the   nut   on   the   bolt   by   a   few   turns.
F
 
R
eposition   the   fixing   parts   (nut   and   bolt)   in  
t

he   centre   of   the   wheel.
F
 
T
ighten   fully   until   the   central   nut   clicks   to  
r

etain   the   wheel   correctly.
F
 
C
lip   the   tool   storage   box   back   into   place  
(

standard
 spar
e
 w
heel).
In the absence of a wheel in the spare wheel
well,
  the   fixing   parts   (nut   and   bolt)   cannot   be  
r

efitted.
8
In the event of a breakdown