2014.5 Citroen C4 air conditioning

87
9. "REST" function: ventilation with the engine off
Even with the engine is off, you 
c an operate the ventilation for a
few
 m

inutes.
8. Air intake / Air recirculation
F Press this button for recirculation of   the   interior   air.   The   indicator l

amp   in   the   button   comes   on.
Air
 
recirculation   enables   the   passenger  
c

ompartment   to   be   isolated   from   exterior  
o

dours
 
and
  smoke.
F
a
s s

oon as possible, press this button
again
 
to   permit   the   intake   of   outside   air   and  
p

revent
  the   formation   of   condensation.   The  
i

ndicator   lamp   in   the   button   goes   off.
Avoid
  prolonged   operation   in   interior   air  
r

ecirculation   mode   (risk   of   misting   and  
d

eterioration   of   air   quality). For
  example,   while   you   are   away   from   the  
v

ehicle,   the   passengers   can   still   enjoy   some   air  
c

irculation   without   having   the   engine   running.
This
  function   is   available   after   switching   on   the  
i

gnition,   as   well   as   after   stopping   the   engine.
The
  period   that   the   function   is   available  
d

epends   on   the   state   of   charge   of   the   battery.
You can activate the "REST" function while the
air
  conditioning   control   screens   are   on.On switching on the engine
-
 T he   control   screens   come   on:   the   function  
i

s   available.
-
 
P
ressing   the   REST button activates the
ventilation
  for   a   few   minutes.   Activation   of  
t

he   function   is   confirmed   by   the   display   of  
t

wo   dashes   in   the   control   screens   and   four  
a

ir   flow   level   indicator   lamps.
-
 
T
he   function   can   be   deactivated   and  
r

eactivated   if   the   control   screens   are   on.
-
 
T
he   screens   go   off   at   the   end   of   this  
p

eriod.
4
Comfort

88
Switching the system off
On stopping the engine
- W hile   the   control   screens   remain   on:   the  
f

unction   is   available.
-
 
P
ressing   the   REST button activates the
ventilation
  for   a   few   minutes.   Activation   of  
t

he   function   is   confirmed   by   the   display   of  
t

wo   dashes   in   the   control   screens   and   four  
a

ir   flow   level   indicator   lamps.
 L

ocking   the   vehicle   has   no   effect   on   this  
f

unction.
-
 
T
he   control   screens   go   off   at   the   end   of   this  
p

eriod.
 P

ressing   again   before   the   end   of   the   period  
i

nterrupts   off   the   ventilation   definitively:   the  
c

ontrol   screens   go   off   and   the   function   is  
n

o   longer   available. F

T
urn the air flow control to the
left   until   all   of   the   indicator  l
amps   go   off.
This   action   switches   off   the   air   conditioning   and  
th

e
 v
entilation.
Temperature
  related   comfort   is   no   longer  
a

ssured   but   a   slight   flow   of   air,   due   to   the  
m

ovement   of   the   vehicle,   can   still   be   felt.
F
 
M
odify   the   settings   (temperature,   air   flow  
o

r   air   distribution)   or   press   the   "AUTO"
button
  to   reactivate   the   system   with   the  
v

alues   set   before   it   was   switched   off.
Avoid
  prolonged   operation   in   interior  
a

ir   recirculation   mode   or   driving   for  
l

ong   periods   with   the   system   off   (risk   of  
m

isting   and   deterioration   of   air   quality).
This
  switch   does   not   operate   the   air  
c

onditioning,   only   the   air   fan.
When
  the   "REST"   function   is   activated,  
y

ou   cannot   modify   the   temperature,   air  
f

low   and   distribution   settings:   these   are  
c

ontrolled   automatically   according   to  
t

he
 a
mbient
 t
emperature.
This function is not available in the
STOP
  mode   of   Stop   &   Start.
Comfort

89
Front demist - defrost
These markings on the control panel indicate the control positions for rapid demisting or defrosting   of   the   windscreen   and   side   windows.
With manual air
conditioning
F Put  the   temperature,   air   flow   and   distribution c
ontrols   to   the   dedicated   marked   position.
F
 
P
ut   the   air   intake   control   to   the   "Exterior   air  
i

ntake"   position  
 
(

indicator   lamp   on   the   control   off).
F
 
S
witch   on   the   air   conditioning   by   pressing
 t

he "A /C "
 

button;   the   warning   lamp   in   the
 b

utton   comes   on.
With digital dual-zone air
conditioning
Automatic visibility programme
F Select this programme to demist or defrost the windscreen   and   side   windows   as   quickly   as p

ossible.
The
 
system   automatically   manages   the   air
 c

onditioning,   air   flow   and   air   intake,   and   provides
 o

ptimum   distribution   towards   the   windscreen   and
 si

de
 w
indows.
F To   stop   the   programme,   press   either   the "
visibility"  button   again   or   "AUTO", the
warning
  lamp   on   the   button   goes   off   and   the
 w

arning   lamp   on   the   "AUTO" button
comes
  on.
The
  system   starts   again   with   the   values   in   use
 b

efore  
i
t  
w
as  
ov
erridden  
b
y  
t
he  
v
isibility  
p
rogramme.
With Stop & Start, when demisting has been   activated,   the   STOP   mode   is   not  
a

vailable.
With
 
Stop
 
&
 
Start,
 
when
 
the
 
demisting,
 
a

ir
 
conditioning
 
and
 
air
 
flow
 
functions
 
a

re
 
activated,
 
STOP
 
mode
 
is
 
not
 a
vailable.
4
Comfort

90
Rear screen demist - defrost
The control button is located on the air conditioning system control panel.
Switching on
The rear screen demisting/defrosting can only operate   when   the   engine   is   running.
F
 
P
ress   this   button   to   demist /defrost   the  
r

ear   screen   and   (depending   on   version)  
t

he   door   mirrors.   The   indicator   lamp  
a

ssociated   with   the   button   comes   on.
Switching off
The demisting/defrosting switches off automatically to   prevent   an   excessive   consumption   of   current.
F It  is   possible   to   stop   the   demisting/defrosting o
peration   before   it   is   switched   off   automatically b

y   pressing   the   button   again.   The   indicator
 l

amp   associated   with   the   button   goes   off.
F Switch  off   the   demisting/defrosting  o
f   the   rear   screen   and   door   mirrors  
a

s soon as appropriate, as lower
current
  consumption   results   in  
r

educed
 f
uel
 c
onsumption.
Comfort

105
Large multifunctional
storage unit
It is illuminated only when the sliding shutter   is   fully   open.
The
  sliding   shutter   can   be   partly  
c

losed   up   to   the   level   of   the   retractable  
s

upport,   so   as   to   keep   the   storage  
s

pace   cool.
This
 
storage
 
unit
 
is
 
closed
 
by
 
a
 
sliding
 
shutter.
It
 
contains:
-
 
t

he
 
USB
 
port
 
and
 
12
 
V
 
/
 
auxiliary
 
sockets
 
1 ,
-
 
a

 
retractable
 
support
 
2
 
to
 
receive
 
a
 
mobile
 
p

hone
 
or
 
portable
 
device,
-
 
a

 
space
 
ventilated
 
by
 
a
 
closeable
 
no

zzle 3 ,
 
to
 
keep
 
food
 
and
 
drinks
 
fresh
 
i

f
 
the
 
automatic
 
digital
 
air
 
conditioning
 
is
 
ope

rating.
5
Fittings

215
Checks
Particle filter (Diesel)
- fixed  illumination   of   the   particle  f
ilter   warning   lamp,   accompanied  
b

y   an   audible   signal   and   a  
m

essage   that   there   is   a   risk   of  
b

lockage   of   the   particle   filter.
The 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. As
 
soon
 
as   the   traffic   conditions   permit,  
r

egenerate   the   filter   by   driving   at   a   speed   of   at  
l

east
 
40
 
mph   (60   km/h)   until   the   warning   lamp  
g

oes
 
off.
If
 
the
 
warning   lamp   stays   on,   refer   to   the  
"

Additive
 
level"   section.
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.
Air filter and passenger compartment filter
Refer to the manufacturer's s
ervice   schedule   for   details   of   the  
r

eplacement   intervals   for   these  
c

omponents.
Oil 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.
12 V battery
The battery does not require any maintenance.
H owever,   check   that   the   terminals   are   clean a

nd   correctly   tightened,   particularly   in   summer
 a

nd   winter.
When carrying out work on the battery, refer to   the   "12 V   battery"   section   for   details   of   the  
p

recautions   to   be   taken   before   disconnecting  
t

he   battery   and   following   its   reconnection.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.The start of saturation of the particle filter is
indicated
  by:
on a n

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

ccompanied   by   the   smell   of   "burning",  
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.
10
Checks

256
Load reduction modeE nergy ec onomy m ode
Switching to economy mode
Once this period has elapsed, a message a
ppears   in   the   screen   indicating   that   the  
v

ehicle   has   switched   to   economy   mode   and   the  
a

ctive   functions   are   put   on   standby.
Exiting economy mode
These functions are reactivated automatically the   next   time   the   vehicle   is   driven.
F
 
I
n   order   to   resume   the   use   of   these  
f

unctions   immediately,   start   the   engine   and  
l

et   it   run   for   a   few   minutes.
The
  time   available   to   you   will   then   be   double  
t

he   period   for   which   the   engine   is   left   running.  
H

owever,   this   period   will   always   be   between  
f

ive   and   thirty   minutes.
System
 
which
 
manages
 
the
 
use
 
of
 
certain
 
f

unctions
 
according
 
to
 
the
 
level
 
of
 
charge
 
r

emaining
 
in
 
the
 
battery.
When
 
the
 
vehicle
 
is
 
being
 
driven,
 
the
 
load
 
r

eduction
 
function
 
temporarily
 
deactivates
 
c

ertain
 
functions,
 
such
 
as
 
the
 
air
 
conditioning,
 
t

he
 
heated
 
rear
 
screen...
The
 
deactivated
 
functions
 
are
 
reactivated
 
a

utomatically
 
as
 
soon
 
as
 
conditions
 
permit. System
 
which
 
manages
 
the
 
period
 
of
 
use
 
of
 
certain
  functions   to   conserve   a   sufficient   level   of  
c

harge
 
in
 
the
 
battery.
After
 
the
 
engine
 
has
 
stopped,
 
you
 
can
 
still
 
use
 
functions   such   as   the   audio   equipment,   windscreen  
w

ipers,
 
dipped
 
beam
 
headlamps,
 
courtesy
 
lamps,
 
etc.   for
 a m
aximum
 c
ombined
 p
eriod
 o
f  
t

hirty minutes.
A  flat   battery   prevents   the   engine   from  
s

tarting   (refer   to   the   corresponding  
par

agraph).
This
 
period
 
may
 
be
 
greatly
 
reduced
 
if
 
t

he
 
battery
 
is
 
not
 
fully
 
charged.
If
 
the
 
telephone
 
is
 
being
 
used
 
at
 
the
 
s

ame
 
time
 
on
 
the
 
navigation
 
system,
 i

t
 
w

ill
 
be
 
interrupted
 
after
 
1

0
 m

inutes.
Practical information