2015 Citroen C4 Owner's Manual

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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
depends
  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
air
  flow   level   indicator   lamps.
-

T
he function can be deactivated and
reactivated
  if   the   control   screens   are   on.
-
 
T
he   screens   go   off   at   the   end   of   this  
p

eriod.
4
Comfort

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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
air
  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
lamps   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
conditioning,
  only   the   air   fan.
When the "REST" function is activated,
you
  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

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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.
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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

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Front seats
Manual adjustments
Forwards-backwardsSeat heightSeat backrest angle
F Raise the control and slide the seat
for wards   or   backwards.
F
 
R
elease   the   control   to   lock   the   position.F
P ull the control upwards to raise or push
it   downwards   to   lower,   as   many   times   as  
n

ecessary,   to   obtain   the   position   required.F
 T urn   the   control   knob   to   adjust   the   seat  b
ackrest   angle.
As
  a   safety   measure,   seat   adjustments  
s

hould   only   be   done   when   stationary.
Before   moving   the   seat   backwards,   ensure   that   there   is   nothing   that   might   prevent   the   full  
t

ravel   of   the   seat,   so   as   to   avoid   the   risk   of   of   jamming   the   seat   caused   by   the   presence   of  
o

bjects   on   the   floor   behind   the   seat   or   rear   passengers.   If   the   seat   jams,   stop   the   movement  
i

mmediately.
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Comfort

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Driver's seat electric adjustments
Forwards-backwards
F Tilt the rear part of the control upwards or downwards   to   obtain   the   required   height.
F

T
ilt the front part of the control upwards or
downwards
  to   obtain   the   required   angle.
Cushion height and angle
F Tilt the control for wards or rear wards to adjust   the   angle   of   the   seat   backrest.
Seat backrest angle
F Push the control for wards or rear wards to slide   the   seat. Before
  moving   the   seat   backwards,   ensure   that   there   is   nothing   that   might   prevent   the   full  
t

ravel   of   the   seat,   so   as   to   avoid   the   risk   of   of   jamming   the   seat   caused   by   the   presence   of  
o

bjects   on   the   floor   behind   the   seat   or   rear   passengers.   If   the   seat   jams,   stop   the   movement  
i

mmediately.
The   electrical   functions   of   the   driver's   seat
 a

re   deactivated   approximately   one   minute
 a

fter   the   ignition   is   switched   off.
To   reactivate   them,   switch   on   the   ignition.
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Additional adjustments
Head restraint height and angle
F To  raise   a   head   restraint,   pull   it   upwards.
F  T o   lower   the   head   restraint,   press   the   lug   A
and
  the   head   restraint   at   the   same   time.
F
 
T
o   adjust   the   angle   of   the   head   restraint,   tilt  
i

ts   lower   part   for wards   or   rear wards.
Heated seats control
With the engine running, the front seats can be heated s eparately.
F
 
U
se   the   adjustment   dial,   placed   on   the   side  
o

f each front seat, to switch on and select
the
  level   of   heating   required:
0: O

f f.
1:

 
L
ow.
2:

  Medium.
3:

 
Hig
h.
Removing a head restraint
F To  remove   the   head   restraint,   press   the  l
ug A   and   pull   the   head   restraint   upwards.
F
 
T
o   put   the   head   restraint   back   in   place,  
e

ngage   the   head   restraint   stems   in   the  
o

penings   keeping   them   in   line   with   the   seat  
b

ack   and   press   the   lug   A   at   the   same   time.
The
 
head
 
restraint
 
is
 
fitted
 
with
 
a
 
frame
 
w

ith
 
notches
 
which
 
prevents
 
it
 
from
 
l

owering;
 
this
 
is
 
a
 
safety
 
device
 
in
 
case
 
o

f
 
impact.
The adjustment is correct when the
upper edge of the head restraint is
level with the top of the head.
ne

ver drive with the head restraints
removed;
  they   must   be   in   place   and  
adj

usted
 c
orrectly.
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Manual lumbar adjustment
F Turn  the   knob   to   obtain   the   desired   level   of  l
umbar sup port. This
  function   provides   a   back   massage;   it   only  o
perates   when   the   engine   is   running.
F  P ress   the   switch   to   activate   the   function.
The
  warning   lamp   on   the   switch   comes   on   and  
t

he   massage   function   is   activated   for   a   period  
o

f   60   minutes.   During   this   time,   massage   is  
p

er formed   in   6   cycles   of   10   minutes   each   cycle  
(

6   minutes   of   massage   followed   by   4   minutes  
b

reak).
After
  an   hour,   the   function   is   automatically  
d

eactivated.   The   warning   lamp   in   the   switch  
g

oes   off.
Deactivation
You can deactivate the massage function at any   time   by   pressing   the   switch.   The   movement  
i

n   progress   continues   until   the   initial   non-
massage
  position   is   reached.
Massage function
Electric lumbar adjustment
F Press the front or rear of the control to obtain   the   desired   lumbar   support.
Comfort