2016 Citroen C4 CACTUS engine fault

150
In bad weather and in winter, ensure that   the   sensors   are   not   covered   by  
r

oad   dirt,   ice   or   snow.
In
  the   event   of   a   fault,   have   the   system  
c

hecked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
If
 
the
 
system
 
is
 
deactivated
 
during
 
a
 
m

anoeuvre,
 
the
 
driver
 
should
 
reactivate
 
i

t
 
to
 
repeat
 
the
 
measurement.
If the lateral distance between your vehicle a
nd   the   space   is   too   great,   the   system   may  
n

ot   be   able   to   measure   the   space.
Anything
  projecting   beyond   the   envelope  
o

f   the   vehicle   (long   or   wide   load)   is   not  
t

aken   into   account   by   the   Park   Assist  
s

ystem   during   a   manoeuvre.
Deactivation
A message is displayed in the screen.
T he   driver   then   takes   back   control   of   the  
v

ehicle's
 s
teering.
The
 
system
 
is
 
deactivated
 
by
 
pressing
 
the
 P
ark
 
Assist
 
control
 
(or
 
the
 
Park
 
Assist
 
button
 
i

n the " Driving assistance "
 
menu
 
of
 
the
 
touch
 
s

creen tablet),
The
 
system
 
is
 
deactivated
 
automatically:
-
 
o

n
 
switching
 
off
 
the
 
ignition,
-
 
i

f
 
the
 
engine
 
stalls,
-
 
i

f
 
no
 
manoeuvre
 
is
 
started
 
within
 
5
 
minutes
 
o

f
 
selection
 
of
 
the
 
type
 
of
 
manoeuvre,
-
 
a

fter
 
a
 
prolonged
 
stop
 
of
 
the
 
vehicle
 
during
 
a

 
manoeuvre,
-
 
i

f
 
the
 
road
 
wheel
 
anti-spin
 
regulation
 
(ASR)
 
s

ystem
 
is
 
invoked,
-
 
i

f
 
the
 
speed
 
of
 
the
 
vehicle
 
exceeds
 
the
 
s

tated
 
limit,
-
 
w

hen
 
the
 
driver
 
interrupts
 
movement
 
of
 
the
 
s

teering
 w

heel,
-
 
i

f
 
the
 
driver
 
presses
 
the
 
Park
 
Assist
 
control
 
(

or
 
the
 
Park
 
Assist
 
button
 
of
 
the
 
"Driving
 
a

ssistance"
 
menu
 
in
 
the
 
touch
 
screen
 
t

ablet),
-
 
i

f
 
correct
 
positioning
 
of
 
the
 
vehicle
 
is
 
not
 
p

ossible
 
(too
 
many
 
manoeuvres
 
needed
 
to
 
i

nsert
 
or
 
extract
 
the
 
vehicle),
-
 
i

f
 
the
 
driver's
 
door
 
is
 
open,
-
 
i

f
 
one
 
of
 
the
 
front
 
wheels
 
encounters
 
an
 
o

bstacle.
Switching off
The system is switched off automatically:
-  w hen   towing   a   trailer,
-
 
i
f   the   driver's   door   is   opened,
-
 
i
f   the   speed   of   the   vehicle   is   above   42   mph  
(

70   km/h).
To
  switch   the   system   of   for   a   prolonged   period,  
c

ontact   a   CITROËN   dealer   or   a   qualified  
w

orkshop.
Operating faults
In the event of a fault with the system, the   symbol   in   the   button   (located   in  
t

he   touch   screen   tablet)   changes   to  
a

lert   mode   and   the   warning   lamp  
f

lashes   and   then   goes   off.
Contact
 
a
  CITROËN   dealer   or   a   qualified  
w

orkshop.
Driving

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

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