2016 Citroen GRAND C4 PICASSO RHD heating

92
Ventilation
Air intake
The air circulating in the passenger compartment   is   filtered   and   originates   either  
f

rom   the   outside   via   the   grille   located   at   the  
b

ase   of   the   windscreen   or   from   the   inside   in   air  
re

circulation
 m
ode.
Air treatment
The incoming air follows various routes depending   on   the   controls   selected   by   the  
d

river:
-
 
d
irect   arrival   in   the   passenger  
c

ompartment   (air   intake),
-
 
p
assage   through   a   heating   circuit   (heating),
-
 
p
assage   through   a   cooling   circuit   (air  
c

onditioning).
Control panel
The controls of this system are accessible in the Air conditioning  menu   of   the   touch   screen  
t

ablet A .
The
  demisting/defrosting   controls   for   the  
w

indscreen   and   rear   screen   are   located   on   the  
l

eft   of   the   touch   screen   tablet. 1. W
indscreen d emisting-defrosting v ents.
2. F ront   quarter   light   demisting-defrosting  
ve

nts.
3.
 F

ront   side   window   demisting-defrosting  
ve

nts.
 A

djustable   side   air   vents.4. C
entral   adjustable   air   vents.
5. A ir   outlets   for   the   front   footwells.
6.
 S

ide   vents   for   the   2
nd row.
7. A
ir
 
outlets
 
for
 
2nd row footwells.
8. S
unshine s
ensor.
Air distribution
Ease of use and comfort

93
In order for these systems to be fully effective, follow the operation and maintenance guidelines belo w:
F
 
T
o   obtain   an   even   air   distribution,   take   care   not   to   obstruct   the   exterior   air   intake   grilles  
l

ocated   at   the   base   of   the   windscreen,   the   nozzles,   the   vents   and   the   air   outlets,   as   well  
a

s   the   air   extractor   located   in   the   boot.
F
 
D
o   not   cover   the   sunshine   sensor,   located   on   the   dashboard;   this   is   used   for   regulation  
o

f   the   air   conditioning   system.
F
 
O
perate   the   air   conditioning   system   for   at   least   5   to   10   minutes,   once   or   twice   a   month  
t

o   keep   it   in   per fect   working   order.
F
 
E
nsure   that   the   passenger   compartment   filter   is   in   good   condition   and   have   the   filter  
e

lements   replaced   regularly.
 W

e   recommend   the   use   of   a   combined   passenger   compartment   filter.   Thanks   to   its  
s

pecial   active   additive,   it   contributes   to   the   purification   of   the   air   breathed   by   the  
o

ccupants   and   the   cleanliness   of   the   passenger   compartment   (reduction   of   allergic  
s

ymptoms,   bad   odours   and   greasy   deposits).
F
 
T
o   ensure   correct   operation   of   the   air   conditioning   system,   you   are   also   advised   to   have  
i

t   checked   regularly   as   recommended   in   the   maintenance   and   warranty   guide.
F
 
I
f   the   system   does   not   produce   cold   air,   switch   it   off   and   contact   a   CITROËN   dealer   or   a  
q

ualified
 w
orkshop.
Recommendations for ventilation and air conditioning
If after an extended stop in sunshine, the  i nterior  t emperature  i s  v ery  h igh,  f irst  
v

entilate   the   passenger   compartment   for  
a

  few   moments.
Put
  the   air   flow   control   at   a   setting   high  
e

nough   to   quickly   change   the   air   in   the  
p

assenger
 c
ompartment.
The
  air   conditioning   system   does   not  
c

ontain   chlorine   and   does   not   present  
a

ny   danger   to   the   ozone   layer.
The
  condensation   created   by   the   air  
c

onditioning   results   in   a   discharge  
o

f   water   under   the   vehicle   which   is  
p

er fectly   normal.
When
 
towing
 
the
 
maximum
 
load
 
on
 
a
 
steep
 
gradient
 
in
 
high
 
temperatures,
 
switching
 
off
 
the
 
a

ir
 
conditioning
 
increases
 
the
 
available
 
engine
 
power
 
and
 
so
 
improves
 
the
 
towing
 
ability.
Stop & Start
The heating and air conditioning s ystems   only   work   when   the   engine   is  
r

unning.
To
  maintain   a   comfortable   temperature  
i

n   the   passenger   compartment,   you   can  
t

emporarily   deactivate   the   Stop   &   Start  
s

ystem.
For
  more   information   on   Stop & Star t,
refer
  to   the   corresponding   section.
3
Ease of use and comfort

94
Heating
Temperature adjustment
F Press  one   of   the   arrows,   or   move  t
he   cursor   from   blue   (cold)   to   red  
(

hot)   to   adjust   the   temperature   to  
y

our
 w
ishes.
Air flow adjustment
F Press one of these buttons to increase   or   decrease   the   speed  
o

f   the   booster   fan.
Air distribution adjustmentThe recirculation of interior air prevents exterior odours   and   smoke   entering   the   passenger  
c

ompartment.
This function also allows the air in the
passenger
  compartment   to   be   heated   or   cooled  
m

ore   quickly.
Windscreen.
Centre
 
and
 
side
 
vents.
Footwells. The
  air   distribution   can   be   varied   by   using  
m

ore   than   one   button:   illumination   of   the  
b

utton   indicates   that   air   is   distributed   in   that  
d

irection;   no   illumination   indicates   that   air   is   not  
d

istributed   in   that   direction.
Pressing   all   three   buttons   gives   an   even  
d

istribution   in   the   passenger   compartment.
Air intake / Air recirculation
F Press this button to select the
exterior   air   intake   mode   to   the  
p

assenger
 c
ompartment.
Avoid
 
driving
 
for
 
too
 
long
 
without
 
v

entilation
 
(risk
 
of
 
misting
 
and
 
d

eterioration
 
of
 
air
 
quality).
The
 
heating
 
system
 
works
 
only
 
when
 
the
 
e

ngine
 
is
 
running.
Press the button for the Air conditioning
menu
 
to
 
display
 
the
 
page
 
for
 
the
 
system
 
c

ontrols.
The
 
symbol
 
for
 
air
 
flow
 
(a
 
fan)
 
fills
 
progressively
 
a

ccording
 
to
 
the
 
air
 
flow
 
setting
 
made.
By
 
reducing
 
the
 
air
 
flow
 
to
 
the
 
minimum,
 
you
 
a

re
 
stopping
 
ventilation
 
of
 
the
 
passenger
 
c

ompartment.
The
 
air
 
distribution
 
in
 
the
 
passenger
 
c

ompartment
 
can
 
be
 
adjusted
 
by
 
combining
 
the
 
u

se
 
of
 
several
 
vents.
When
 
the
  indicator   lamp   is   off,   air   is   taken   from  
o

utside
 
the   vehicle.   When   the   indicator   lamp   is  
o

n,
 
the
 
air
  inside   the   passenger   compartment  
i

s
 
recirculated   and   the   intake   of   air   from   outside  
t

he
 
vehicle   is   inhibited.
Ease of use and comfort

98
The air distribution in the passenger compartment   can   be   adjusted   by   combining   the  
u

se   of   several   vents.
Air distribution adjustment
Windscreen.
Footwells.
Centre
  and   side   vents.
The
 
air
 
distribution   can   be   varied   by   using  
m

ore
 
than   one   button:   illumination   of   the  
b

utton
 
indicates   that   air   is   distributed   in   that  
d

irection;
 
no   illumination   indicates   that   air   is   not  
d

istributed   in   that   direction.
In
 
AUTO
 
mode,   all   three   buttons   are   off.Switching off Switching on
Air conditioning On/Off
The air conditioning is designed to operate e
fficiently   in   all   seasons,   with   the   windows  
c

losed.
It
  allows   you:
-
 
i
n   summer,   to   lower   the   temperature,
-
 
i
n   winter,   above   3   °C,   to   improve   demisting.
Avoid
  prolonged   operation   of   the   air  
r

ecirculation   function   (risk   of   misting  
a

nd   of   deterioration   of   the   air   quality).
When
  the   indicator   lamp   is   off,   the   intake   of  
e

xterior   air   is   active.
When
  the   indicator   lamp   is   on,   air   recirculation  
i

s   activated,   the   intake   of   exterior   air   is  
in

hibited.F

P
ress this button to choose
the
  mode   for   air   entry   to   the  
p

assenger
 c
ompartment.
The
  intake   of   exterior   air   avoids   misting   of   the  w
indscreen   and   side   windows.
Air
  recirculation   prevents   exterior   odours  
a

nd   smoke   from   entering   the   passenger  
c

ompartment.
This
  function   also   allows   faster   heating  
o

r   cooling   of   the   air   in   the   passenger  
c

ompartment.
Air intake/Air recirculation
F Press  this   button   again   to   switch  o
ff   the   air   conditioning.
When
 
the
  indicator   lamp   is   off,   the   air  
c

onditioning   system   is   off.
F

P
ress this button to switch on the
air
 c
onditioning.
When
 
the
  indicator   lamp   is   on,   the   air  
c

onditioning   system   is   on.
The
 
air
 
conditioning   cannot   operate   when   the  
a

ir
 
flow
 
is
  set   to   off.
Ease of use and comfort

102
Front demist - 
d
efrost
F Press   this   button   to   demist   or  d
efrost   the   windscreen   and   side  
w

indows   as   quickly   as   possible.  
T

he   indicator   lamp   in   the   button  
c

omes   on.
With
  Stop   &   Start,   when   demisting   has  
b

een   activated,   the   STOP   mode   is   not  
a

vailable.
The
 
system   automatically   manages   the   air  
c

onditioning   (depending   on   version),   air  
f

low
 
and
 
air   intake,   and   provides   optimum  
d

istribution   towards   the   windscreen   and   side  
w

indows.
F
 
T

o
 
switch   it   off   press   this   button   again   or  
a

djust   the   setting   for   air   flow   or   distribution.  
T

he
 
indicator   lamp   goes   off.
Rear screen demist - 
d efrost
Switching on
Switching off
F Press   this   button   to   demist /
defrost   the   rear   screen   and  
(

depending   on   version)   the   door  
m

irrors.
The demisting/defrosting switches off automatically to   prevent   an   excessive   consumption   of   current.
The rear screen demist - defrost can   only   operate   when   the   engine   is  
r

unning.
Switch
  off   the   heating   of   the   rear   screen  
a

nd   door   mirrors   as   soon   as   you   judge   it  
p

ossible,   as   reducing   the   consumption  
o

f   electrical   current   reduces   fuel  
c

onsumption.
F

I

t is possible to stop the
demisting/defrosting
 o

peration
 b

efore
 
it
 
is
 
switched
 
off
 
a

utomatically
 
by
 
pressing
 
the
 
bu

tton
 ag

ain.
The
 
indicator
 
lamp
 
associated
 
with
 
the
 
button
 
g

oes
 
off.
The indicator lamp associated with the button comes on.
Ease of use and comfort

121
Driving recommendations
Observe the driving regulations and remain vigilant   whatever   the   traffic   conditions.
Pay
  close   attention   to   the   traffic   and   keep   your  
h

ands   on   the   wheel   so   that   you   are   ready   to  
r

eact   at   any   time   to   any   eventuality.
On
  a   long   journey,   a   break   every   two   hours   is  
s

trongly
 re
commended.
In
  difficult   weather,   drive   smoothly,   anticipate  
t

he   need   to   brake   and   increase   the   distance  
f

rom   other   vehicles.
Driving on flooded roads
We strongly advise against driving on flooded roads,   as   this   could   cause   serious   damage  
t

o   the   engine   or   gearbox,   as   well   as   to   the  
e

lectrical   systems   of   your   vehicle.If
  you   are   obliged   to   drive   through   water:
-  
c
heck   that   the   depth   of   water   does   not  
e

xceed   15   cm,   taking   account   of   waves  
t

hat   might   be   generated   by   other   users,
-  
d
eactivate   the   Stop   &   Start   system,
-  
d
rive   as   slowly   as   possible   without  
s

talling.   In   all   cases,   do   not   exceed   6   mph  (
10 km/h),
-  d o   not   stop   and   do   not   switch   off   the  
e

ngine.
On
  leaving   the   flooded   road,   as   soon   as  
c

ircumstances   allow,   make   several   light   brake  
a

pplications   to   dry   the   brake   discs   and   pads.
If
  in   doubt   on   the   state   of   your   vehicle,   contact  
a

  CITROËN   dealer   or   a   qualified   workshop.
Important!
Never drive with the parking brake applied   -   Risk   of   overheating   and  
d

amage   to   the   braking   system!
Risk
  of   fire!
As
  the   exhaust   system   of   your   vehicle  
i

s   very   hot,   even   several   minutes   after  
s

witching   off   the   engine,   do   not   park  
o

r   run   the   engine   over   areas   where  
in

flammable
 s
ubstances
 an
d
 m
aterials
 a

re   present:   grass,   leaves,   etc.
Never
  leave   a   vehicle   unsupervised  
w

ith   the   engine   running.   If   you   have  
t

o   leave   your   vehicle   with   the   engine  
r

unning,   apply   the   parking   brake  
a

nd   put   the   gearbox   into   neutral   or  
p

osition

N or P,
  depending   on   the   type  
o

f   gearbox.
4
Driving

122
When towing
Distribution of loads
F Distribute  the   load   in   the   trailer   so   that   the h
eaviest   items   are   as   close   as   possible   to t

he   axle   and   the   nose   weight   approaches   the
 m

aximum   permitted   without   exceeding   it.
Air
  density   decreases   with   altitude,   thus  
r

educing   engine   per formance.   Above  
1 0

00 metres,   the   maximum   towed   load   must  
b

e   reduced   by   10 %   for   every   1 000   metres   of  
al

titude.
Side wind
F Take   into   account   the   increased   sensitivity  t
o   side   wind.
For
  more   information   on   Weights
, refer
to   the   corresponding   section.
The   rear   parking   sensors   will   be  
d

eactivated   automatically   to   avoid   the  
a

udible   signal   if   a   genuine   CITROËN  
t

owbar   is   used.
Cooling
Towing a trailer on a slope increases the temperature   of   the   coolant.
As
  the   fan   is   electrically   controlled,   its   cooling  
c

apacity   is   not   dependent   on   the   engine   speed.
F
 
T
o   lower   the   engine   speed,   reduce   your  
s

peed.
The
  maximum   towed   load   on   a   long   incline  
d

epends   on   the   gradient   and   the   ambient  
t

emperature.
In
  all   cases,   keep   a   check   on   the   coolant  
t

emperature. F
 
I
f   the   warning   lamp   and   the  
S

TOP
 
warning   lamp   come   on,  
s

top   the   vehicle   and   switch   off  
t

he   engine   as   soon   as   possible.
Braking
Towing a trailer increases the braking distance.
T o   avoid   overheating   of   the   brakes,   the   use   of  
e

ngine   braking   is   recommended.
Ty r e s
F Check  the   tyre   pressures   of   the   towing  v
ehicle   and   of   the   trailer,   observing   the  
re

commended
 p
ressures.
Lighting
F Check  the   electrical   lighting   and   signalling  o
n   the   trailer   and   the   headlamp   beam  
h

eight   of   your   vehicle.
For
  more   information   on   Adjusting the
headlamp beam height , refer to the
corresponding
 s

ection.
Driving