2014.5 Citroen C4 PICASSO RHD check engine

315
Coolant level
The coolant level should be close to   the   "MA X"   mark   but   should   never  
e

xceed   it.
In
 
addition,   as   the   cooling   system   is   pressurised,
 w

ait
 
at
 
least   one   hour   after   switching   off   the
 e

ngine
 
before   carrying   out   any   work.
To
 
avoid
 
any   risk   of   scalding,   unscrew   the   cap
 b

y
 
two
 
turns   to   allow   the   pressure   to   drop.   When
 t

he
 
pressure   has   dropped,   remove   the   cap   and
 t

op
 
up
 
the
  level.
Fluid specification
The coolant must conform to the ma nufacturer's r ecommendations.
The
 
brake
 
fluid
 
level
 
should
 
be
 
close
 
t

o
 
the
 
"MA X"
 
mark.
 
If
 
it
 
is
 
not,
 
check
 
t

he
 
brake
 
pad
 
wear.
Brake fluid level
Changing the fluid
Refer to the manufacturer's service schedule f
or   details   of   the   interval   for   this   operation.
Fluid specification
The brake fluid must conform to the manufacturer's r ecommendations. The cooling fan may star t after switching
off the engine: take care with ar ticles and
clothing that might be caught by the fan
blades. When   the   engine   is   warm,   the   temperature   of  
t

he   coolant   is   regulated   by   the   fan.
8
Checks

317
Checks
12 V battery
The battery does not require any maintenance.However, check that the terminals are clean and   correctly   tightened,   particularly   in   summer a

nd   winter.
Refer to the manufacturer's service   schedule   for   details   of   the  
r

eplacement   intervals   for   these  
c

omponents.
Air filter and passenger compartment filter
Replace the oil filter each time the e ngine   oil   is   changed.
Refer
  to   the   manufacturer's  
s

ervice   schedule   for   details   of  
t

he   replacement   interval   for   this  
c

omponent.
Oil filterThe presence of this label, in particular with
the   Stop   &   Start   system,   indicates   the   use   of  
a

  specific   12   V   lead-acid   battery   with   special  
t

echnology   and   specification.   The   involvement  
o

f   a   CITROËN   dealer   or   a   qualified   workshop  
i

s   essential   when   replacing   or   disconnecting  
t

he   battery.
Unless
  other wise   indicated,   check   these   components   in   accordance   with   the   manufacturer's   service   schedule   and   according   to   your   engine.
Other wise,   have   them   checked   by   a   CITROËN   dealer   or   a   qualified   workshop.
Depending   on   the   environment   (e.g.   dusty  
a

tmosphere)   and   the   use   of   the   vehicle  
(e.g.   city   driving),   replace them twice as often
if necessary .
A   clogged   passenger   compartment   filter   may  
h

ave   an   adverse   effect   on   the   per formance  
o

f   the   air   conditioning   system   and   generate  
u

ndesirable
 o
dours.
Particle filter (Diesel)
The start of saturation of the
particle
  filter   is   indicated   by   the  
f

ixed   illumination   of   this   warning  
l

amp   accompanied   by   a   warning  
m

essage.
As
 
soon   as   the   traffic   conditions   permit,  
r

egenerate   the   filter   by   driving   at   a  
s

peed
 
of   at   least   40   mph   (60   km/h)   until  
t

he
 
warning   lamp   goes   off.
If
 
the
 
warning   lamp   stays   on,   this  
i

ndicates   a   low   additive   level.
on a n

ew vehicle, the first particle
filter
 
regeneration   operations   may   be  
a

ccompanied   by   a   "burning"   smell,  
w

hich
 
is   per fectly   normal.
Following
  prolonged   operation   of   the  
v

ehicle
 
at   very   low   speed   or   at   idle,  
y

ou
 
may,   in   exceptional   circumstances,  
n

otice
 
the   emission   of   water   vapour   at  
t

he
 
exhaust   on   acceleration.   This   does  
n

ot affect the behaviour of the vehicle
or
 
the
 
environment.
When
 
carrying
 
out
 
work
 
on
 
the
 
battery,
 
refer
 
t

o
 
the
 
"12
 
V
 
battery"
 
section
 
for
 
details
 
of
 
the
 
p

recautions
 
to
 
be
 
taken
 
before
 
disconnecting
 
t

he
 
battery
 
and
 
following
 
its
 
reconnection.
8
Checks

318
Brake wear depends on the style of   driving,   particularly   in   the   case  
o

f   vehicles   used   in   town,   over   short  
d

istances.   It   may   be   necessary   to  
h

ave
 
the
 
condition   of   the   brakes   checked,   even  
b

etween
 v
ehicle
 s
ervices.
Unless
 
there   is   a   leak   in   the   circuit,   a   drop   in  
t

he
 
brake
  fluid   level   indicates   that   the   brake  
p

ads
 
are
 
worn.
Brake pads
For information on checking brake d isc   wear,   contact   a   CITROËN   dealer  
o

r   a   qualified   workshop.
Brake disc wear
Only use products recommended by CITROËN   or   products   of   equivalent  
q

uality
 an
d
 sp
ecification.
In
  order   to   optimise   the   operation   of  
u

nits   as   important   as   those   in   the  
b

raking   system,   CITROËN   selects   and  
o

ffers   very   specific   products.
After
  washing   the   vehicle,   dampness,  
o

r   in   wintry   conditions,   ice   can   form  
o

n   the   brake   discs   and   pads:   braking  
e

fficiency   may   be   reduced.   Make   light  
b

rake   applications   to   dry   and   defrost  
t

he   brakes.
Electric parking brake
For more information, refer to the "Electric parking   brake   -   Operating   faults"   section.
This
  system   does   not   require   any  
r

outine   servicing.   However,   in   the  
e

vent   of   a   problem,   have   the   system  
c

hecked   by   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Manual gearbox
The gearbox does not require any m
aintenance   (no   oil   change).
Refer
  to   the   manufacturer's   service  
s

chedule   for   the   checking   interval   for  
t

his
 c
omponent.
Electronic gearbox
The gearbox does not require any maintenance   (no   oil   change).
Refer
  to   the   manufacturer's   service  
s

chedule   for   details   of   the   checking  
i

nterval   for   this   component.
Automatic gearbox
The gearbox does not require any maintenance   (no   oil   change).
Refer
  to   the   manufacturer's   service  
s

chedule   for   details   of   the   level  
c

hecking   interval   for   this   component.To
  avoid   damaging   the   electrical   units,  
n

ever use   a   high   pressure   jet   wash   in  
t

he   engine   compartment.
Checks

319
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 u
rea,
 
a
 
catalytic
 
converter
 
turns
 
up   to   85%  
o

f
 
nitrous
 
oxides
 
(NOx)
 
into
 
nitrogen   and  
w

ater,
 
which
 
are
 
harmless
 
to
 
health   and   the  
e

nvironment. 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. Once
  the   AdBlue
® tank is empty, a s
ystem
 
required
  by   regulations  
p

revents
 
starting
 
of   the   engine.
If the SCR

is faulty, the level of
emissions
 
from
 
your   vehicle   will   no  
l

onger
 
meet
 
the
 
Euro   6   standard:   you  
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

 
running
 
distance   of   650   miles  
(

1 100
 
km),
 
a
 
system   will   be   triggered  
a

utomatically
 
to
 
prevent   engine   starting.
8
Checks

320
Range indicators
When switching on the ignition, an indicator gives   an   estimate   of   the   distance   that   can  
b

e   travelled   with   your   vehicle   before   engine  
s

tarting   is   automatically   prevented,   once   the  
v

ehicle   starts   using   the   reserve   of   AdBlue
® or
after
 
a
 
fault
 
is
 
detected
 
with
 
the
 
SCR
 
system.
In
 
the
 
event
 
of
 
simultaneous
 
system
 
fault
 
and  
l

ow
 
AdBlue
® level, the shortest range is the one d
isplayed. Range greater than 1 500 miles (2 400 km)
When
  the   ignition   is   switched   on,  
n

o information   on   range   is   displayed  a
utomatically   in   the   instrument   panel.
With   the   type   2   instrument   panel,   pressing   this  
b

utton   displays   the   driving   range   temporarily.
Above
  3   000   miles   (5   000   km),   the   value   is   not  
s

pecified.
In the event of the risk of non-starting related to a lack of AdBlue®
The engine start prevention system required   by   regulations   is   activated  
a

utomatically   once   the   AdBlue
® tank is e
m pt y.
Checks

321
Remaining range between 350 and 1500 miles (600 and 2 400 km)
When switching on the ignition, the UREA 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  
1

50   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.
Refer
 
to
 
the
 
"Topping-up"
 
section.
Remaining range between 0 and 350 miles (0 and 600 km)
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   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.
Refer
 
to
 
the
 
"Topping-up"
 
section.
ot

her wise you will not be able to restart
your engine.
Breakdown related to a lack of AdBlue® additive
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.
To
 
be
 
able   to   start   the   engine,  
w

e
 
recommend   that   you   call   on  
a

 
CITROËN   dealer   or   a   qualified  
w

orkshop   for   the   top-up   required.   If  
y

ou
 
carry   out   the   top-up   yourself,   it   is  
e

ssential   to   add   at   least   3.8   litres   of  
Ad

Blue
® to the tank.
R
efer
 
to
  the   "Topping-up"   section.
8
Checks

322
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   a   message   "Emissions  
f

ault"   to   signal   a   fault   with   the   emissions   control  
s

ystem.
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. 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   30   miles   (50   km)   covered   with   the  
p

ermanent   display   of   the   message   signalling  
a

  fault),   the   SERVICE   and   engine   diagnostic  
w

arning   lamps   come   on   and   the   UREA  
w

arning   lamp   flashes,   accompanied   by   an  
a

udible   signal   and   the   display   of   a   message  
(

e.g.:   "Emissions   fault:   Starting   prevented   in  
1

50 miles")   indicating   the   remaining   range  
e

xpress   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.
ot

her wise, you will not be able to restart
your engine.
A
 
system
 
that
 
prevents
 
engine
 
starting
 
i

s
 
activated
 
automatically
 
from
 
6

50 miles
 
(1
 
100
 
km)
 
after
 
confirmation
 
o

f
 
a
 
fault
 
with
 
the
 
SCR
 
emissions
 
c

ontrol
 
system.
 
Have
 
the
 
system
 
c

hecked
 
by
 
a
 
CITROËN
 
dealer
 
or
 
a
 
q

ualified
 
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.
Checks

323
Starting prevented
Every  time   the   ignition   is   switched   on,   the  
S

ERVICE   and   engine   diagnostic   warning  
l

amps   come   on   and   the   UREA   warning   lamp  
f

lashes,   accompanied   by   an   audible   signal   and  
t

he   display   of   the   message   "Emissions   fault:  
St

arting
 p
revented".
You
  have   exceeded   the   authorised  
d

riving   limit:   the   starting   prevention  
s

ystem   inhibits   engine   starting.
To
  be   able   to   start   the   engine,   you   must  
c

all   on   a   CITROËN   dealer   or   a   qualified  
w

orkshop. Freezing of the AdBlue® additive
The
 
AdBlue
® additive freezes at t
emperatures   below   around   -11°C.
The
 
SCR
 
system   includes   a   heater  
f

or
 
the
 
AdBlue
® tank, allowing you to c
ontinue
 
driving   in   very   cold   conditions.
8
Checks