check engine Citroen C4 DAG 2014.5 2.G Owner's Guide

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Fuel used for petrol engines
The petrol engines  are  compatible  with  E10
 bio-petrol  (containing  10  %  etha -
nol),
 
conforming
 
to
 
European
 
standards
 
EN

  228   and   EN   15376.
E85
 
type
 
fuels
 
(containing
 
up
 
to
 
85
 
%
 
ethanol)

 
are
 
reserved
 
exclusively
 
for
 
vehicles

 
marketed
 
for
 
the
 
use
 
of
 
this
 
type

 
of
 
fuel
 
(BioFlex
 
vehicles).
 
The
 
quality

 
of
 
the
 
ethanol
 
must
 
comply
 
with
 
European

  standard   EN   15293.
Fuel used for Diesel engines
The Diesel engines  are  compatible  with  biofuels
 which  conform  to  current  and  
future

 
European
 
standards
 
(Diesel
 
fuel
 
which

 
complies
 
with
 
standard
 
EN
 
590
 
mixed

 
with
 
a
 
biofuel
 
which
 
complies
 
with

 
standard
 
EN
 
14214)
 
available
 
at
 
the

 
pumps
 
(containing
 
up
 
to
 
7
 
%
 
Fatty
 
Acid

  Methyl   Ester).
The
 
B30
 
biofuel
 
can
 
be
 
used
 
in
 
cer
-
tain
 
Diesel
 
engines.
 
However
,  
this
 
use,
 
even

 
occasional,
 
requires
 
strict
 
applica
-
tion
 
of
 
the
 
special
 
servicing
 
conditions.
 
Contact

 
a
 
CITROËN
 
dealer
 
or
 
a
 
quali
-
fied
  workshop.
The use of any other type of (bio)fuel
(vegetable
 
or
 
animal
 
oils,
 
pure
 
or
 
dilu
t-
ed,
 
domestic
 
fuel...)
 
is
 
strictly
 
prohibited
 
(risk

 
of
 
damage
 
to
 
the
 
engine
 
and
 
fuel
 
system).
The

 
petrol

 
or

 
Diesel

 
engine

 
of

 
your

 
ve

-
hicle
 
is

 
fitted

 
with

 
a

 
catalytic

 
converter

,
 a
 device
 which
 helps
 to
 reduce
 the
 lev
-
el
 of
 harmful
 emissions
 in
 the
 exhaust
 gases.
For petrol engines, the use of un
-
leaded fuel is compulsory.
The
 
filler

 
neck

 
is

 
narrower

,
 
admitting

 
unleaded

 
petrol
 
nozzles
 
only.
Fuel supply cut-off
Your vehicle  is  equipped  with  a  safety  device
 which  cuts  of f  the  fuel  supply  in  
the

  event   of   a   collision.
If you have put in the wrong
fuel for your vehicle, you must
have the tank drained and re-
filled with the correct fuel be-
fore you start the engine.
CHECKS

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C4-2_en_Chap10_verification_ed01-2014
MISFUEL PREVENTION
(D IESEL )*
Mechanical device  which  prevents  fill -
ing  the  tank  of  a  Diesel  vehicle  with  
petrol.

 
It
 
avoids
 
the
 
risk
 
of
 
engine
 
dam
-
age
 
that
 
can
 
result
 
from
 
fillin
g  
with
 
the
 
wrong

  fuel.
Located
 
in
 
the
 
filler
 
neck,
 
the
 
misfuel
 
prevention

 
device
 
appears
 
when
 
the
 
filler

  cap   is   removed.
Operation
When a petrol  filler  nozzle  is  introduced  into
 the  fuel  filler  neck  of  your  Diesel  
vehicle,

 
it
 
comes
 
into
 
contact
 
with
 
the
 
flap.

 
The
 
system
 
remains
 
closed
 
and
 
prevents

  filling.
Do not persist but introduce a Diesel
type filler nozzle.
It
 
remains
 
possible
 
to
 
use
 
a
 
fuel
 
can

  to   fill   the   tank.
In
 
order
 
to
 
ensure
 
a
 
good
 
flow
 
of
 
fuel,

 
do
 
not
 
place
 
the
 
nozzle
 
of
 
the

 
fuel
 
can
 
in
 
direct
 
contact
 
with
 
the

 
flap
 
of
 
the
 
misfuel
 
prevention
 
device

  and   pour   slowly.*
 
According
  to   country   of   sale.
Travelling abroad
As
 
Diesel
 
fuel
 
pump
 
nozzles
 
may

 
be
 
dif
ferent  
in
 
other
 
coun
-
tries,  
the
 
presence
 
of
 
the
 
misfuel
 
prevention

 
device
 
may
 
make
 
re
-
fuelling   impossible.
Before  
travelling
 
abroad,
 
we
 
recommend

 
that
 
you
 
check
 
with
 
the

 
CITROËN
 
dealer
 
network,
 
whether your vehicle is suitable
for

 
the
 
fuel
 
pumps
 
in
 
the
 
country
 
in

  which   you   want   to   travel.
CHECKS

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C4-2_en_Chap10_verification_ed01-2014
RUNNING OUT OF FUEL
(D IESEL )
1.6 HDi engine
F Fill the  fuel  tank  with  at  least  five  li -
tres   of   diesel.
F
 
Open
  the   bonnet.
F
 
If
 
necessary
,  
unclip
 
the
 
styling
 
cover
 
for

  access   to   the   priming   pump.
F
 
Squeeze
 
and
 
release
 
the
 
priming
 
pump

 
repeatedly
 
until
 
resistance
 
is
 
felt

 
(there
 
may
 
be
 
resistance
 
at
 
the
 
first

  press).
F
 
Operate
 
the
 
starter
 
until
 
the
 
engine
 
starts

 
(if
 
the
 
engine
 
does
 
not
 
start
 
at

 
the
 
first
 
attempt,
 
wait
 
around
 
15 seconds

  before   trying   again).
F
 
If
 
the
 
engine
 
does
 
not
 
start
 
after
 
a
 
few

 
attempts,
 
operate
 
the
 
priming
 
pump

  again   then   start   the   engine.
F
 
Refit
 
the
 
styling
 
cover
 
and
 
clip
 
it
 
in
 
place.
F

 
Close
  the   bonnet.
2.0 HDi engine
F Fill the  fuel  tank  with  at  least  five  li -
tres   of   Diesel.
F
 
Open
  the   bonnet.
F

If necessary
, unclip the style cover
for
  access   to   the   priming   pump.
F
 
Slacken
  the   bleed   screw.
F
 
Squeeze
 
and
 
release
 
the
 
priming
 
pump

 
repeatedly
 
until
 
fuel
 
appears
 
in

  the   transparent   pipe.
F
 
T
ighten   the   bleed   screw.
F
 
Operate
 
the
 
starter
 
until
 
the
 
engine
 
starts

 
(if
 
the
 
engine
 
fails
 
to
 
start
 
at

 
the
 
first
 
attempt,
 
wait
 
around
 
15 seconds

  before   trying   again).
F
 
If
 
the
 
engine
 
fails
 
to
 
start
 
after
 
a
 
few
 
attempts,

 
operate
 
the
 
priming
 
pump
 
again,

  then   the   starter.
F
 
Put
 
the
 
style
 
cover
 
back
 
in
 
position
 
and

 
clip
 
it
 
in
 
place,
 
ensuring
 
that
 
it
 
has

  clipped   correctly.
F
 
Close
  the   bonnet.
If
 
the

 
engine

 
does

 
not

 
start

 
first

 
time,

 
don't

 
keep

 
trying

 
but

 
start

 
the

 
procedure

 
again

 
from

 
the

 
be

-
ginning.
On
 
vehicles

 
fitted

 
with

 
HDi

 
engines,

 
the

 fuel
 system
 must
 be
 primed
 if
 you
 run
 out
 of
 fuel;
 refer
 to
 the
 corresponding
 engine
 
compartment
 
view.
If
 
the

 
tank

 
on

 
your

 
vehicle

 
is

 
fitted

 
with

 
a

 
misfuel

 
prevention

 
device,

 
refer

 
to

 
the

 
"Misfuel

 
prevention
 
(Diesel)"
 
section.
1.6 BlueHDi engine
F Fill  the  fuel  tank  with  at  least  five  li -
tres   of   Diesel.
F
 
Switch
 
on
 
the
 
ignition
 
(without
 
start
-
ing
  the   engine).
F
 
W
ait  
around
 
6
 
seconds
 
and
 
switch
 
of

f   the   ignition.
F
 
Repeat
  the   operation   10   times.
F
o perate the starter to run the en-
gine.
CHECKS

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C4-2_en_Chap10_verification_ed01-2014
BONNET
F Push the  exterior  safety  catch  B to
the   left   and   raise   the   bonnet.
Opening
F Open  the   front   left   door.
F
Pull
the interior bonnet release le-
ver
A,  
located
 
at
 
the
 
bottom
 
of
 
the
 
door

  aperture. F
 
Unclip
 
the
 
stay
 
C
 
from
 
its
 
housing
 
on

  the   back   of   the   bonnet.
F
 
Fix
 
the
 
stay
 
in
 
the
 
notch
 
to
 
hold
 
the
 
bonnet

  open.
The location of the interior bonnet
release
 
lever
 
prevents
 
opening
 
of the

 
bonnet
 
while
 
the
 
front
 
left
 
door is

  closed.
Closing
F Take  the  stay  out  of  the  support  notch.
F
 
Clip
 
the
 
stay
 
in
 
its
 
housing
 
on
 
the
 
back

  of   the   bonnet.
F
 
Lower
 
the
 
bonnet
 
and
 
release
 
it
 
at
 
the

  end   of   its   travel.
F
 
Pull
 
on
 
the
 
bonnet
 
to
 
check
 
that
 
it
 
is
 
secured

  correctly.
Do
 
not
 
open
 
the
 
bonnet
 
in
 
high
 
winds.
When

 
the
 
engine
 
is
 
hot,
 
handle
 
the

 
exterior
 
safety
 
catch
 
and
 
the
 
bonnet

 
stay
 
with
 
care
 
(risk
 
of
 
burns).
Before

 
doing

 
anything

 
under

 
the

 
bonnet, switch of

f the Stop &
Start
 
system

 
to

 
avoid

 
any

 
risk

 
of

 
injury

 
resulting

 
from

 
an

 
automatic change

 
to
 
START
 

mode.
The cooling fan may start after
switching off the engine: take care
with articles and clothing that might
be caught by the fan blades.
b
ecause of the presence of
electrical  
equipment
 
under
 
the
 
bonnet,

 
it
 
is
 
recommended
 
that

 
exposure
 
to
 
water
 
(rain,
 
 
washing,
  ...)   be   limited.
CHECKS

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C4-2_en_Chap10_verification_ed01-2014
PETROL ENGINES
The various caps and covers allow access for checking the levels of the various fluids and for replacing certain components.
1.  
Power
  steering   reservoir.
2.
 
Screenwash
 
and
 
headlamp
 
wash
 
reservoir

.
3.
 
Coolant
  reservoir. 4.
 
Brake
  fluid   reservoir.
5.
 
Battery/Fuses.
6.

 
Fusebox.7.

 
Air
  filter.
8.
 
Engine
  oil   dipstick.
9.
 
Engine
  oil   filler   cap.
CHECKS

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C4-2_en_Chap10_verification_ed01-2014
* According  to   engine.
DIESEL ENGINES
The various  caps  and  covers  allow  access  for  checking  the  levels  of  the  various  fluids,  for  replacing  certain  components  and  for
  priming   the   fuel   system.
1.
 
Power
  steering   reservoir.
2.
 
Screenwash
 
and
 
headlamp
 
wash
 
reservoir

.
3.
 
Coolant
  reservoir. 4.
 
Brake
  fluid   reservoir.
5.
 
Battery/Fuses.
6.

 
Fusebox.
7.

 
Air
  filter.8.
 
Engine
  oil   dipstick.
9.
 
Engine
  oil   filler   cap.
10.
 
Priming
  pump*.
11 .
 Bleed

  screw*.
CHECKS

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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

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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

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C4-2_en_Chap10_verification_ed01-2014
Used products
Avoid prolonged contact  of  used  oil
  or   fluids   with   the   skin.
Most
 
of
 
these
 
fluids
 
are
 
harmful
 
to

 
health
 
or
 
indeed
 
very
 
corro
-
sive.
Do
 
not
 
discard
 
used
 
oil
 
or
 
fluids
 
into

  sewers   or   onto   the   ground.
Take
 
used
 
oil
 
to
 
a
 
CITROËN
 
dealer

 
or
 
a
 
qualified
 
workshop
 
(France)

 
or
 
to
 
an
 
authorised
 
waste

  disposal   site.
Additive level (Diesel with
particle emissions filter)
The additive reservoir  low  level  is  indi -
cated   by:
Topping up
The
 
reservoir
 
must
 
be
 
topped
 
up
 
with
-
out
 
delay
 
by
 
a
 
CITROËN
 
dealer
 
or
 
a
 
qualified

  workshop.
-
 
fixed
 
illumination
 
of
 
the
 
par
-
ticle
 
emissions
 
filter
 
warning lamp,

 
accompanied
 
by
 
an
 
au
-
dible
 
signal
 
and
 
a
 
message that

 
the
 
particle
 
emissions filter

  additive   level   is   too   low.
Screenwash / headlamp wash
fluid levelSpecification of the fluid
To 
ensure
 
optimum
 
cleaning
 
and
 
to avoid

 
freezing,
 
the
 
fluid
 
should
 
never
 
be topped

  up   or   replaced   by   plain   water.
In
 
wintry
 
conditions,
 
the
 
use
 
of
 
a
 
fluid
 
with

 
an
 
ethyl
 
alcohol
 
or
 
methanol
 
base
 
is

  recommended.
To
 
check

 
the

 
level

 
or

 
top

 
up

 
the

 
fluid

 
on

 
vehicle

 
fitted

 
with

 
headlamp

 
washers,

 
immobilise

 
the

 
vehicle

 
and

 
switch

 
of

 
the

 
engine.
F

 
Open

 
the

 
bonnet

 
and

 
secure

 
it

 
with

 
the

 
stay.
F
 
Open

 
the

 
screenwash

 
reservoir

 
fill

-
er
 
cap.
F
 
T

ake
 
and

 
pinch

 
the

 
level

 
gauge

 
to

 
block

 
its
 
breather.
F
 
Remove

 
the

 
gauge

 
completely

 
from

 
the

 
reservoir

 
to

 
read

 
the

 
level

 
in

 
the

 
transparent

 
section.
F
 
T

op
 
up
 
if
 
necessary.
F
 
Refit

 
the

 
filler

 
cap

 
to

 
the

 
reservoir

 
and

 
close
 
the
 
bonnet.
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