2014.5 Citroen C4 DAG service

99
153 
C4-2_en_Chap09_conduite_ed01-2014
The flashing and  then  fixed  illu
mination  of  the  under-
inflation
 
warning
 
lamp
 
accom
-
panied
 
by
 
the
 
illu
mination  
of
 
the

 
service
 
warning
 
lamp
 
indi
-
cates
  a   fault   with   the   system.
Operating fault
The alert is  given  by  the  fixed  il -
lumination  of  this  warning  lamp, accompanied

 
by
 
an
 
audible signal,

 
and
 
depending
 
on
 
equip
-
ment,
 
the
 
display
 
of
 
a
 
message.
Under-inflation alert
The alert is  maintained  until  the  tyre
 or  tyres  concerned  is  rein -
flated,
  repaired   or   replaced.
The
 
spare
 
wheel
 
(space-saver
 
type

 
or
 
a
 
steel
 
rim)
 
does
 
not
 
have

  a   sensor.
The
 
loss
 
of
 
pressure
 
detected
 
does

 
not
 
always
 
lead
 
to
 
visible
 
deformation

 
of
 
the
 
tyre.
 
Do
 
not
 
rely

  on   just   a   visual   check. This
 
alert
 
is
 
also
 
displayed
 
when
 
one

 
or
 
more
 
wheels
 
is
 
not
 
fit
-
ted  
with
 
a
 
sensor
 
(for
 
example,
 
a

 
space-saver
 
or
 
steel
 
spare
 
wheel).
In

 
the

 
event

 
of

 
a

 
problem

 
on

 
one

 
of

 
the

 
tyres,

 
the

 
symbol

 
or

 
the

 
message

 
ap

-
pears,
 
according

 
to

 
equipment,

 
to

 
iden

-
tify
 
it. F
 
Reduce
 
speed,
 
avoid
 
sudden
 
steer
-
ing  
movements
 
or
 
harsh
 
brake
 
ap
-
plications.
F
 
Stop
  as   soon   as   it   is   safe   to   do   so.
In  
this
 
case,
 
monitoring
 
of
 
the
 
tyre
 
pres
-
sures   is   not   assured.
F
 
If

 
you
 
have
 
a
 
compressor
 
(the
 
one
 
in

 
the
 
temporary
 
puncture
 
repair
 
kit
 
for

 
example),
 
check
 
the
 
four
 
tyre
 
pressures

  when   cold.
 If

 
it
 
is
 
not
 
possible
 
to
 
check
 
the
 
tyre
 
pressures

 
at
 
the
 
time,
 
drive
 
care
-
fully   at   reduced   speed.
or
F


In the event of a puncture, use the
temporary

 
puncture
 
repair
 
kit
 
or
 
the
 
spare

 
wheel
 
(according
 
to
 
equip
-
ment).
Go  
to
 
a
 
CITROËN
 
dealer
 
or
 
a
 
qualified
 
workshop 

to  
have
 
the
 
system
 
checked
 or
,  following  the  repair  of  a  puncture,  to  have
 the  original  wheel,  equipped  with  
a

  sensor,   refitted.
Any
 
tyre
 
repair
 
or
 
replacement
 
on
 
a
 
wheel

 
fitted
 
with
 
this
 
system
 
must
 
be
 
carried

 
out
 
by
 
a
 
CITROËN
 
dealer
 
or
 
a
 
qualified

  workshop.
If
 
after
 
changing
 
a
 
tyre,
 
a
 
wheel
 
is
 
not
 
detected

 
by
 
your
 
vehicle
 
(fitting
 
snow
 
tyres

 
for
 
example),
 
you
 
must
 
have
 
the
 
system

 
reinitialised
 
by
 
a
 
CITROËN
 
dealer

  or   a   qualified   workshop.
DRIVING

99
157 
C4-2_en_Chap09_conduite_ed01-2014
LANE DEPARTURE WARNING SYSTEM
The lane departure  warning  sys -
tem  cannot  in  any  circumstanc -
es
 
replace
 
the
 
need
 
for
 
vigilance
 
on

  the   part   of   the   driver.
It
 
is
 
necessary
 
to
 
observe
 
driv
-
ing
 
regulations
 
and
 
take
 
a
 
break
 
every

  two   hours.
Activation
F Press this  button,  the  indicator  lamp  comes
  on.
Deactivation
F Press this  button  again,  the  indica -
tor   lamp   goes   off.
The
 
status
 
of
 
the
 
system
 
remains
 
in
 
the
 
memory

 
when
 
the
 
ignition
 
is
 
switched
 
of

f.
Detection
You are  warned  by  the  vibration  of  the  driver's
  seat   cushion:
-
 
on
 
the
 
right-hand
 
side,
 
if
 
the
 
mark
-
ing
 
on
 
the
 
ground
 
has
 
been
 
crossed
 
on

  the   right,
-
 
on
 
the
 
left-hand
 
side,
 
if
 
the
 
marking
 
on

 
the
 
ground
 
has
 
been
 
crossed
 
on
 
the

  left.
No
 
warning
 
is
 
transmitted
 
while
 
the
 
direction

 
indicator
 
is
 
active
 
and
 
for
 
ap
-
proximately
 
20
 
seconds
 
after
 
the
 
direc
-
tion
  indicator   is   switched   off.
A
 warning

 
may
 
be
 
transmitted
 
if
 
a
 
direc
-
tion
 
marking
 
(e.g.
 
arrow)
 
or
 
non-standard marking

  (e.g.   graffiti)   is   crossed.
Operating fault
The detection may be impeded:
-  
if
 
the
 
sensors
 
are
 
dirty
 
(mud,
 
snow

...),
-
 
if
 
the
 
markings
 
on
 
the
 
ground
 
are worn,
-

 
if
 
there
 
is
 
little
 
contrast
 
be
-
tween
 
the
 
markings
 
on
 
the
 
ground

 
and
 
the
 
road
 
surface.
System

 
which

 
detects

 
the

 
involuntary

 
crossing

 
of

 
longitudinal

 
traffic

 
lane

 
markings

 
on

 
the

 
ground

 
(solid

 
or

 
bro

-
ken
 
line).
Sensors,
 
fitted

 
below

 
the

 
front

 
bumper

,
 
trigger

 
a

 
warning

 
if

 
the

 
vehicle

 
drifts

 
over

 
a

 
lane

 
marking

 
(speed

 
higher

 
than

 
50

 
mph
 
(80
 
km/h)).
This
 
system

 
is

 
particularly

 
useful

 
on

 
motorways

 
and
 
main
 
roads. In
 
the
 
event
 
of
 
a
 
malfunction,
 
the

 
service
 
warning
 
lamp
 
comes

 
on,
 
accompanied
 
by
 
an

 
audible
 
signal
 
and
 
a
 
message
 
in
 
the
 
screen.
Contact

 
a
 
CITROËN
 
dealer
 
or
 
a
 
quali
-
fied
 
workshop.
DRIVING

1010
170 
C4-2_en_Chap10_verification_ed01-2014
TOTAL & CITROËN
Partners in performance and
protecting the environment
Innovation in the search for
performance
For 
over
 
40
 
year
,  
the
 
T
OTAL
 Research
 
and
 
Development

 
departments
 
have
 
developed
 
for

 
CITROËN,
 
lubricants
 
to
 
match
 
the
 
latest technical innovations on CITR

o Ë n
vehicles,
 
both
 
for
 
competition
 
and
 
for
 
everyday

  motoring.
For you, this is an assurance that you will
obtain
 
of
 
the
 
best
 
performance
 
for
 
your
 
engine.
Optimum protection for your
engine
By

 
having
 
your
 
CITROËN
 
vehicle serviced

 
with
 
T
OTAL
 lubricants, you

 
are
 
contributing
 
towards
 
im
-
proving
 
the
 
life
 
and
 
performances of

 
your
 
engine,
 
while
 
also
 
protect
-
ing
  the   environment.
prefers
CHECKS

1010
178 
C4-2_en_Chap10_verification_ed01-2014
CHECKING LEVELS
Take care when  working  under  the bonnet, as certain areas of
the
 
engine
 
may
 
be
 
extremely
 
hot
 
(risk

 
of
 
burns)
 
and
 
the
 
cooling
 
fan

 
could
 
start
 
at
 
any
 
time
 
(even
 
with

  the   ignition   off).
The
 
check
 
is
 
carried
 
out
 
either
 
when

 
the
 
ignition
 
is
 
switched
 
on

 
using
 
the
 
oil
 
level
 
indicator
 
in

 
the
 
instrument
 
panel
 
for
 
ve
-
hicles with an electric oil level
gauge,
  or   using   the   dipstick.
Engine oil level
Checking using the dipstick
Refer 
to
 
the
 
"Petrol
 
engine"
 
or
 
"Diesel
 
engine"

 
section
 
for
 
the
 
location
 
of
 
the
 
dipstick

 
in
 
the
 
engine
 
compartment
 
of
 
your

  vehicle.
F
 
T
ake  
the
 
dipstick
 
by
 
its
 
coloured
 
grip
 
and

  remove   it   completely.
F
 
Wipe
 
the
 
end
 
of
 
the
 
dipstick
 
using
 
a
 
clean

  non-fluffy   cloth.
F
 
Refit
 
the
 
dipstick
 
and
 
push
 
fully
 
down,

 
then
 
pull
 
it
 
out
 
again
 
to
 
make
 
the

 
visual
 
check:
 
the
 
correct
 
level
 
is
 
between

  the   marks   A   and   B.
Check
 
all

 
of

 
these

 
levels

 
regularly

,
 
in

 
line

 
with

 
the

 
manufacturer's

 
service

 
schedule.

 
T

op
 
them

 
up

 
if

 
necessary

,
 
unless

 
otherwise
 
indicated.
If
 
a

 
level

 
drops

 
significantly

,
 
have

 
the

 
corresponding

 
system

 
checked

 
by

 
a

 
CITROËN

 
dealer

 
or

 
a

 
qualified

 
work

-
shop.
To
 
ensure

 
that

 
the

 
reading

 
is

 
correct,

 
your

 
vehicle

 
must

 
be

 
parked

 
on

 
a

 
level

 
surface

 
with

 
the

 
engine

 
having

 
been

 
of

f
 
for

 
more
 
than
 
30
 
minutes.
It
 
is

 
normal

 
to

 
top

 
up

 
the

 
oil

 
level

 
be

-
tween
 
two

 
services

 
(or

 
oil

 
changes).

 
CITROËN

 
recommends

 
that

 
you

 
check

 
the

 
level,

 
and

 
top

 
up

 
if

 
necessary

,
 
every

 
3

 
000
 
miles
 
(5
 
000
 
kms). A
  =   MAX
B
  =   MIN If
 you  find  that  the  level  is  above  the  A
mark  or  below  the  B  mark,  do not start
the engine.
-
 
If
 
the
 
level
 
is
 
above
 
the
 
MAX
 
mark
 
(risk

 
of
 
damage
 
to
 
the
 
engine),
 
con
-
tact
 
a
 
CITROËN
 
dealer
 
or
 
a
 
quali
-
fied
  workshop.
-
 
If
 
the
 
level
 
is
 
below
 
the
 
MIN
 
mark,
 
you

  must   top   up   the   engine   oil.
Oil grade
Before
 
topping-up
 
the
 
oil
 
or
 
changing
 
the

 
oil,
 
check
 
that
 
the
 
oil
 
is
 
the
 
correct
 
grade

 
for
 
your
 
engine
 
and
 
conforms
 
to
 
the

  manufacturer's   recommendations.
CHECKS

1010
179 
C4-2_en_Chap10_verification_ed01-2014
Brake fluid level
Changing the fluid
Refer 
to
 
the
 
manufacturer's
 
service
 
schedule

 
for
 
details
 
of
 
the
 
interval
 
for
 
this

  operation.
Fluid specification
The
 
brake
 
fluid
 
must
 
conform
 
to
 
the
 
manufacturer's

  recommendations.
Power steering fluid level
The power steering  fluid  level should
 be  close  to  the  "MAX" mark.

 
With
 
the
 
engine
 
cold,
 
un
-
screw
 
the
 
cap
 
to
 
check
 
the
 
level.
Coolant level
The coolant level  should  be  close
 to  the  "MAX"  mark  but  
should

  never   exceed   it.
When
 
the
 
engine
 
is
 
warm,
 
the
 
temperature

 
of
 
the
 
coolant
 
is
 
regulated
 
by

 
the
 
fan.
In
 
addition,
 
as
 
the
 
cooling
 
system
 
is
 
pressurised,

 
wait
 
at
 
least
 
one
 
hour
 
after
 
switching

 
of
f  
the
 
engine
 
before
 
carrying
 
out

 
any
  work.
To
 
avoid
 
any
 
risk
 
of
 
scalding,
 
unscrew
 
the cap by two turns to allow the pres

-
sure
 
to

 
drop.
 
When
 
the
 
pressure
 
has
 
dropped,

 
remove
 
the
 
cap
 
and
 
top
 
up
 
the

 
level.
Fluid specification
The
 
coolant
 
must
 
conform
 
to
 
the
 
manu
-
facturer's
  recommendations.
The cooling fan may start after
switching off the engine: take
care with articles and clothing
that might be caught by the
fan blades.
The
 brake
 fluid
 level
 should
 be
 close
 to
 the
 "MAX"
 mark.
 If
 it
 is
 not,
 
check
 
the
 
brake
 
pad
 
wear.
Topping up the engine oil level
Refer
 
to

 
the

 
"Petrol

 
engine"

 
or

 
"Diesel

 engine"
 section
 for
 the
 location
 of
 the
 oil
 filler
 cap
 in
 the
 engine
 compartment
 of
 
your
 
vehicle.
F
 
Unscrew

 
the

 
oil

 
filler

 
cap

 
to

 
reveal

 
the

 
filler
 
aperture.
F
 
Add

 
oil

 
in

 
small

 
quantities,

 
avoiding

 
any

 
spills

 
on

 
engine

 
components

 
(risk

 
of
 
fire).
F
 
W

ait
 
a

 
few

 
minutes

 
before

 
checking

 
the

 
level
 
again
 
using
 
the
 
dipstick.
F
 
Add

 
more
 
oil
 
if
 
necessary.
F
 
After

 
checking

 
the

 
level,

 
carefully

 
refit

 
the

 
oil

 
filler

 
cap

 
and

 
the

 
dipstick

 
in

 
its
 
tube.
After
 
topping

 
up

 
the

 
oil,

 
the

 
check

 
when

 
switching

 
on

 
the

 
ignition

 
with

 
the

 
oil

 
level

 
indicator

 
in

 
the

 
instrument

 
panel

 
is

 
not

 
valid

 
during

 
the

 
30

 
minutes

 
after

 
topping

 
up.
Engine oil change
Refer
 
to

 
the

 
manufacturer's

 
service

 
schedule

 
for

 
details

 
of

 
the

 
interval

 
for

 
this

 
operation.
In
 
order

 
to

 
maintain

 
the

 
reliability

 
of

 
the

 
engine

 
and

 
emission

 
control

 
system,

 
never

 
use
 
additives
 
in
 
the
 
engine
 
oil.
CHECKS

1010
181 
C4-2_en_Chap10_verification_ed01-2014
CHECKSParticle emission filter (Diesel)
The start of saturation of the particle
emissions  filter   is   indicated   by:
-
 
fixed
 
illumination
 
of
 
the
 
par
-
ticle
 
emissions
 
filter
 
warning lamp,

 
accompanied
 
by
 
an audible

 
signal
 
and
 
a
 
message that

 
there
 
is
 
a
 
risk
 
of
 
blockage of

  the   particle   emissions   filter.
The presence of this label, in particular
with
 
the

 
Stop

 
&

 
Start

 
system,

 
indicates

 
the

 
use

 
of

 
a

 
specific

 
12

 
V

 
lead-acid

 
bat

-
tery
 
with

 
special

 
technology

 
and

 
specifi

-
cation.
 
The

 
involvement

 
of

 
a

 
CITROËN

 
dealer

 
or

 
a

 
qualified

 
workshop

 
is

 
essen

-
tial
 
when

 
replacing

 
or

 
disconnecting

 
the

 
battery

. On
 
a
 
new
 
vehicle,
 
the
 
first
 
op
-
erations
 
of
 
regeneration
 
of
 
the
 
particle

 
emissions
 
filter
 
may
 
be
 
accompanied

 
by
 
the
 
smell
 
of
 
"burning",

 
which
 
is
 
perfectly
 
nor
-
mal.
Following
 
prolonged
 
operation
 
of

 
the
 
vehicle
 
at
 
very
 
low
 
speed
 
or

 
at
 
idle,
 
you
 
may
,  
in
 
excep
-
tional
 
circumstances,
 
notice
 
the
 
emission

 
of
 
water
 
vapour
 
at
 
the
 
exhaust

 
on
 
acceleration.
 
This
 
does

 
not
 
af
fect  
the
 
behaviour
 
of
 
the

  vehicle   or   the   environment.
As
 
soon
 
as
 
the
 
traffic
 
conditions
 
per
-
mit,
 
regenerate
 
the
 
filter
 
by
 
driving
 
at
 
a
 
speed

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

  warning   lamp   goes   off.
If
 
the
 
warning
 
lamp
 
stays
 
on,
 
refer
 
to
 
the

  "Additive   level"   section.
Unless
 otherwise
 indicated,
 check
 these
 components
 in
 accordance
 with
 
the

 
manufacturer's

 
service

 
schedule

 
and

 
according
 
to
 
your
 
engine.
Otherwise,
 
have

 
them

 
checked

 
by

 
a

 
CITROËN

 
dealer

 
or

 
a

 
qualified

 
work

-
shop.
Air filter and passenger compartment filter
Refer to  the  manufacturer's  service
 schedule  for  details  of  
the

 
replacement
 
intervals
 
for
 
these

  components.
Depending
 
on
 
the
 
environ
-
ment
 
(e.g.
 
dusty
 
atmosphere)
 
and
 
the
 
use

 
of

 
the
 
vehicle
 
(e.g.
 
city
 
driving),
 
re
-
place them twice as often if neces-
sary.
A
 clogged

 
passenger
 
compartment
 
fil
-
ter
 
may

 
have
 
an
 
adverse
 
ef
fect  
on
 
the
 
performance

 
of
 
the
 
air
 
conditioning
 
sys
-
tem
 
and
 
generate   undesirable   odours.
Oil filter
Replace the oil  filter  each  time  the
  engine   oil   is   changed.
Refer
 
to
 
the
 
manufacturer's
 
service

 
schedule
 
for
 
details
 
of

 
the
 
replacement
 
interval
 
for
 
this

 
component.
12 V battery
The battery  does  not  require  any
  maintenance.
However,
 
check
 
that
 
the
 
ter
-
minals
 
are
 
clean
 
and
 
correctly
 
tightened,

 
particularly
 
in
 
sum
-
mer
 
and
 
winter.
When
 
carrying
 
out
 
work
 
on
 
the
 
battery
,  
refer

 
to

 
the
 
"12 
V  
battery"
 
section
 
for
 
details

 
of
 
the
 
precautions
 
to
 
be
 
taken
 
before

 
disconnecting
 
the
 
battery
 
and
 
following

  its   reconnection.
CHECKS

1010
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C4-2_en_Chap10_verification_ed01-2014
Automatic gearbox
The gearbox does  not  re -
quire  any  maintenance  (no  oil  
change).
 Refer

 
to
 
the
 
manufacturer's
 
service

 
schedule
 
for
 
details
 
of
 
the

 
level
 
checking
 
interval
 
for
 
this

  component.
Electric parking brake
This system  does  not  require  any
 routine  servicing.  However ,  
in

 
the
 
event
 
of
 
a
 
problem,
 
have

 
the
 
system
 
checked
 
by
 
a

 
CITROËN
 
dealer
 
or
 
a
 
qualified
 
work
-
shop.
Manual parking brake
Only use  products  recommended by
 CITROËN  or  products  of  equiva -
lent
  quality   and   specification.
In order to  optimise  the  opera -
tion  of  units  as  important  as  
those

 
in
 
the
 
braking
 
system,
 
CITROËN

 
selects
 
and
 
of
fers  
very

  specific   products.
After
 
washing
 
the
 
vehicle,
 
damp
-
ness,
 
or
 
in
 
wintry
 
conditions,
 
ice
 
can

 
form
 
on
 
the
 
brake
 
discs
 
and
 
pads:

 
braking
 
efficiency
 
may
 
be
 
reduced.

 
Make
 
light
 
brake
 
ap
-
plications
 
to
 
dry
 
and
 
defrost
 
the
 
brakes.
If a loss of ef

fectiveness of this
system
 
is

 
noticed,

 
the

 
parking

 
brake

 
must

 
be

 
checked,

 
even

 
between

 
two
 
services.
Checking
 
this

 
system

 
must

 
be

 
done

 
by

 
a

 
CITROËN

 
dealer

 
or

 
a

 
quali

-
fied
 
workshop.
Brake pads
Brake wear  depends  on  the  style
 of  driving,  particularly  in  
the

 
case
 
of
 
vehicles
 
used
 
in
 
town,

 
over
 
short
 
distances.
 
It
 
may

 
be
 
necessary
 
to
 
have
 
the
 
condition

 
of
 
the
 
brakes
 
checked,
 
even
 
between

 
vehicle   services.
Unless
 
there
 
is
 
a
 
leak
 
in
 
the
 
circuit,
 
a
 
drop

 
in

 
the
 
brake
 
fluid
 
level
 
indicates
 
that

 
the
 
brake   pads   are   worn.
Brake disc wear
For information  on  checking  brake
 disc  wear ,  contact  a  
CITROËN

 
dealer
 
or
 
a
 
quali
-
fied
  workshop. For
 
more
 
information,
 
refer
 
to
 
the
 
"Electric parking

  brake   -   Operating   faults"   section.
Manual gearbox
The gearbox
 does  not  re -
quire  any  maintenance  (no  oil  
change).
Refer

 
to
 
the
 
manufacturer's
 
service

 
schedule
 
for
 
the
 
checking

 
interval
 
for
 
this
 
com
-
ponent.
Electronic gearbox
The gearbox  does  not  re -
quire  any  maintenance  (no  oil  
change).
 Refer

 
to
 
the
 
manufacturer's
 
service

 
schedule
 
for
 
details
 
of
 
the

 
checking
 
interval
 
for
 
this
 
component.
CHECKS

1010
183 
C4-2_en_Chap10_verification_ed01-2014
ADBLUE® ADDITIVE AND SCR SYSTEM
FOR
B
LUE HD I D IESEL
ENGINES
To assure  respect  for  the  environment  and
 conformity  with  the  new  Euro  6  
emissions

 
standard,
 
without
 
adversely
 
af

fecting  
the
 
performance
 
or
 
fuel
 
con
-
sumption
 
of
 
Diesel
 
engines,
 
CITROËN
 
has

 
taken
 
the
 
decision
 
to
 
equip
 
its
 
ve
-
hicles
 
with
 
an
 
ef
fective  
system
 
that
 
associates SCR (Selective Catalytic
Reduction)

 
with
 
a
 
particle
 
filter
 
(F
AP)  
for

  the   treatment   of   exhaust   gases.
Presentation of the SCR system
Using an additive  called  AdBlue® con-
taining
 urea,
 a
 catalytic
 converter
 turns  
up

 
to

 
85%

 
of

 
nitrous

 
oxides

 
(NOx)
 
into
 
nitrogen

 
and

 
water

,
 
which

 
are

 
harmless
 
to

 
health
 
and
 
the
 
environment. The
 
AdBlue® additive
 is  held  in  a  spe -
cial
 tank
 located  under  the  boot  at  the  
rear

 
of

 
the

 
vehicle.
 
It
 
has
 
a
 
capacity
 
of
 
17

 
litres:

 
this

 
provides
 
a
 
driving
 
range
 
of
 
about

 
12

 
500
 
miles
 
(20
 
000
 
km),
 
after
 
which

 
an

 
alert
 
is
 
triggered
 
warning
 
you
 
when

 
the

 
reserve
 
remaining
 
is
 
enough
 
for

 
just
 
1
 
500   miles   (2   400   km).
During
 
each

 
scheduled
 
service
 
of
 
your
 
vehicle

 
by

 
a

 
CITROËN
 
dealer
 
or
 
a
 
qual
-
ified
 
workshop,
 
the
 
AdBlue® additive  tank
 is
 refilled
 in
 order
 to
 allow  normal  
operation

 
of
 
the
 
SCR
 
system.
If
 
the

 
estimated

 
mileage

 
between
 
two
 
services

 
is

 
greater

 
than

 
12

 
500
 
miles
 
(20

 
000

 
km),

 
we

 
recommend

 
that
 
you
 
go

 
to

 
a

 
CITROËN

 
dealer

 
or

 
a
 
qualified
 
workshop

 
to

 
have

 
the

 
necessary
 
top-up
 
carried

 
out. Once
 
the
 
AdBlue® tank is
 empty ,  a
 system
 required
 by  regulations  
prevents

 
starting
 
of   the   engine.
If the SCR

is faulty, the level of
emissions
 
from

 
your
 
vehicle
 
will
 
no

 
longer

 
meet

 
the
 
Euro
 
6
 
stan
-
dard:
 
you

 
vehicle

 
becomes
 
pol
-
luting.
In
 
the

 
event

 
of

 
a

 
confirmed
 
fault
 
with

 
the

 
SCR

 
system,
 
you
 
must
 
go

 
to

 
a

 
CITROËN
 
dealer
 
or
 
a
 
qualified

 
workshop
 
as
 
soon
 
as
 
possible:

 
after

 
a

 
running
 
dis
-
tance
 
of

 
650

 
miles
 
(1 
100  
km),
 
a

 
system

 
will

 
be

 
triggered
 
au
-
tomatically
 
to

 
prevent
 
engine
 
starting.
CHECKS