277
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 a fluid called AdBlue® containing urea, a c
atalytic
converter
turns
up
to 85% of nitrogen
o
xides
(NOx)
into
nitrogen
and water, which are
h
armless
to
health
and
the
environment. 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.
7
Practical information
278
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.
Topping-up the AdBlue®
Filling the AdBlue® tank is an operation i
ncluded
in
every
routine service on your
v
ehicle
by
a
CITROËN dealer or a qualified
w
orkshop.
Nevertheless,
given the capacity of the tank, it
m
ay
be
necessary
to top-up the fluid between
s
ervices,
more
particularly if an alert (warning
l
amps
and
a
message) signals the requirement.
You
can
go
to
a
CITROËN dealer or a qualified
w
orkshop.
If
you
envisage
topping-up yourself, please
r
ead
the
following
warnings carefully.Precautions in use
Use only AdBlue® fluid that meets the I
SO 22241
standard.
AdBlue® is a urea-based solution. This liquid is n
on-flammable, colourless and odourless (kept
i
n
a
cool area).
In
the
event of contact with the skin, wash
t
he
affected area with soap and water. In the
e
vent
of
contact with the eyes, wash (irrigate)
t
he
eyes with large amounts of water or with
a
n
eye
wash solution for at least 15 minutes.
I
f
a
burning sensation or irritation persists, get
m
edical
attention.
If
swallowed, immediately wash out the mouth
w
ith
clean water and then drink plenty of water.
In
certain conditions (high ambient
t
emperature, for example), the risk of release of
a
mmonia cannot be excluded: do not inhale the
f
luid.
Ammonia vapour has an irritant effect on
m
ucous
membranes (eyes, nose and throat).The
supply in a non-drip bottle simplifies
t
opping-up. You can obtain 1.89 litre (half a US
g
allon) bottles from a CITROËN dealer or a
q
ualified
w
orkshop.
Never
dilute AdBlue
® with water.
N
ever
pour
AdBlue® into the Diesel fuel
tank.
Never
top-up
from
an AdBlue
®
dispenser
reserved
for
heavy
goods
v
ehicles.
Keep
AdBlue
® out of the reach of
children,
in
its
original bottle.
Never
transfer AdBlue
® to another
container:
it
would
lose
its purity.
Practical information
