2012 Citroen C5 engine

I
41
MONITORING















Engine oil temperature gauge

Under normal operating conditions,
the bars should be within section 1
.
In severe operating conditions, the
bars may extend into section 2
.
In this event, slow down, and if neces-
sary, stop the engine and check the
levels (see corresponding section).


Coolant temperature gauge

Under normal operating conditions,
the bars should be within section 1
.
In severe operating conditions, the
bars may extend into section 2
, the
engine coolant temperature warning
lamp A
and the STOP
warning lamp
come on, stop as soon as it is safe
to do so
. Switch off the ignition. The
cooling fan may continue to oper-
ate for a certain time
.
Contact a CITROËN dealer or a
qualifi ed workshop.
If the SERVICE
warning lamp comes
on, check the levels (see corre-
sponding chapter). On horizontal ground, illumination of
the fuel low warning lamp indicates
that you are at the reserve level.
An alert message is displayed in the
instrument panel.







Fuel gauge

III
48
COMFORT

Air conditioning

We recommend use of the automatic
regulation of the air conditioning.
It permits automatic and optimised
control of all of the following func-
tions: air fl ow, temperature in the
passenger compartment and air
distribution, by means of various
sensors (ambient temperature, sun-
shine). This eliminates any need for
you to change your settings other
than the temperature value dis-
played.


)
Take care not to cover the sun-
shine sensor A
.
If you select the automatic mode
(by pressing the "AUTO" control)
and leave all of the vents open, opti-
mum comfort will be maintained and
humidity and condensation will be
removed regardless of the exterior
climatic conditions.
The temperature in the passenger
compartment can only be lower than
the ambient temperature if the air
conditioning is on.
HEATING, VENTILATION
AND AIR CONDITIONING
RECOMMENDATIONS In order to be effective, the air con-
ditioning must be used with the win-
dows closed. If the vehicle has been
parked in the sun for a long period
and the interior temperature is very
high, fi rst ventilate the passenger
compartment with the windows
open for a few minutes, then close
the windows.
To keep the air conditioning system
in good working order it is essential
that it is operated at least once a
month.
The air conditioning uses engine pow-
er during its operation. As a result,
the fuel consumption of the vehicle
increases.
In certain cases of particularly ardu-
ous use (e.g. towing the maximum
load on a steep gradient in high tem-
peratures), switching off the air con-
ditioning saves engine power and
improves the towing capacity.


Air inlet

Check that the exterior grille for the
air inlet, at the bottom of the wind-
screen, is clean and free of dead
leaves, snow, etc.
When washing the vehicle using a
high pressure nozzle, avoid spray-
ing at the air inlet.


Air circulation

Maximum comfort is obtained by
means of a good distribution of air in
the passenger compartment, both in
the front and in the rear.
To obtain a uniform distribution of
air, take care not to block the ex-
terior air intake grille located at the
base of the windscreen, the vents,
the air outlets under the front seats
and the air extractor located behind
the fl aps in the boot.
The front and rear vents are fi tted
with thumbwheels to adjust the air
fl ow and direction. We recommend
that you leave all of the vents open.


Dust filter / Odour filter
(active carbon)
There is a fi lter for excluding odours
and dust.
This fi lter must be changed in line
with the vehicle's servicing schedule
(see the vehicle's servicing booklet).

III
49
COMFORT
DIGITAL AIR CONDITIONING (MONO-ZONE)
This is the normal sys-
tem operating mode.
In accordance with the
level of comfort chosen,
pressing this control,
confi rmed illumination
of indicator lamp A
, permits automatic
and simultaneous control of all of the
following functions:


- Air fl ow.

- Temperature in the passenger
compartment.

- Air distribution.

- Air intake.

- Air conditioning.
1. Automatic operation
It is advisable to leave all of the
vents open.
Simply pressing one of the controls,
with the exception of control 2
, switch-
es the system to manual mode.
Indicator lamp A
goes off.
2. Temperature adjustment

Turn control 2
to change
the temperature:


- Clockwise to in-
crease the temper-
ature.
The air conditioning system operates
with the engine running.

Mono-zone:
this is the overall regu-
lation of the temperature, distribution
and fl ow of air in the passenger com-
partment.
The symbols and messages associ-
ated with the digital air conditioning
controls appear in the multifunction
screen.


1.
Automatic operation

2.
Temperature adjustment

3.
Air distribution adjustment

4.
Activation/deactivation of the air
conditioning

5.
Air fl ow adjustment

6.
Front demisting - defrosting

7.
Rear demisting - defrosting

8.
Air recirculation - intake of exterior
air

9.
Screen

- Anticlockwise to reduce the tem-
perature.
The setting required is displayed.
The value indicated in the screen
corresponds to a level of comfort
and not to a temperature in degrees
Celsius or Fahrenheit, depending on
the screen confi guration.
A setting around the value 21
usually
provides optimum comfort. However,
depending on your requirements, a
setting between 18 and 24 is normal.
On entering the vehicle, the interior
temperature may be much colder (or
warmer) than is comfortable. There
is no need to change the tempera-
ture displayed to obtain rapidly the
level of comfort required.
The automatic regulation of the air
conditioning will use its maximum
performance settings to correct the
temperature difference as quickly as
possible.

III
50
COMFORT

Control via the manual controls
It is possible to adjust one or more
functions manually, while leaving the
other functions in automatic mode.


)
Press one of the controls, with
the exception of that which regu-
lates the temperature 2
. Indicator
lamp A
goes off.
Switching to manual mode may result
in discomfort (temperature, humidity,
odour, condensation) and may not
provide optimum comfort.
To return to automatic mode, press
the "AUTO"
control.

3. Air distribution adjustment


)
Press the controls 3

to change the distri-
bution of the air fl ow.
4. Air conditioning
The air conditioning will only oper-
ate when the engine is running. The
air blower control (air fl ow adjust-
ment) must be active to obtain air
conditioning.
Switching off the ventilation


)
Turn control 5
to the
left until the fl ow of
air stops.
)

Press control 4
. Indicator
lamp B
comes on.


5. Air fl ow adjustment
)
Turn control 5
to the
right to increase the
air fl ow or to the left
to reduce it.

6. Front demisting - defrosting
In certain cases, the
"AUTO"
mode may not
be suffi cient to demist or
defrost the windows (hu-
midity, several passen-
gers, ice).


)
Press control 6
to clear the win-
dows quickly. The indicator lamp
comes on. The "OFF"
symbol is displayed in
the multifunction screen.
This action switches off the screen
and the indicator lamps.
It deactivates all of the system's
functions, with the exception of the
rear screen demisting.
The temperature-related comfort is
no longer controlled (temperature,
humidity, odour, condensation).
Avoid driving for too long with the air
conditioning off. In order to be effective, the air condi-
tioning must be used with the windows
closed.
Deactivating the air conditioning may
result in discomfort (temperature,
humidity, odour, condensation).
The indicator lamps corresponding
to the distribution chosen come on:


- Windscreen and front side win-
dows.

- Front ventilation (central and
side vents and air diffusion grille
if open) and rear ventilation.

- Front and rear footwells.
Simultaneous display of the distribu-
tion of air to the windscreen and side
windows and of front and rear ventila-
tion is not possible. The air fl ow level is indicated by the
progressive illumination of the bars
in the control panel screen 9
.
To prevent condensation and dete-
rioration of the quality of the air in
the passenger compartment, ensure
that an adequate fl ow of air is main-
tained.
To reactivate the air conditioning:


)
Press control 1
.

III
51
COMFORT
The "Demisting" mode controls the
temperature, air fl ow and intake
and distributes the ventilation to the
windscreen and front side windows.
Resuming manual control exits from
"Demisting" mode. It must be can-
celled to permit renewal of the air
in the passenger compartment and
demisting.
Once the screen is clear, press-
ing control 1
returns the system to
"AUTO"
mode.


)
Press control 7
, with
the engine running,
to demist the rear
screen and the door
mirrors. The indica-
tor lamp comes on.
7. Rear demisting - defrosting
The heated rear screen operates in-
dependently of the air conditioning
system.
8. Intake of exterior air /
Recirculation of interior air
This function enables you to isolate
the passenger compartment from
exterior fumes and odours.


- When starting with the engine
cold, the fl ow will reach its
optimum level gradually to
prevent an excessive distribu-
tion of cold air.

- When entering the vehicle af-
ter it has been parked for a
fairly long period, if the inte-
rior temperature is very differ-
ent from your comfort setting
there is no need to change
the temperature displayed
in order to quickly reach the
level of comfort required. The
system automatically uses its
maximum performance to cor-
rect the difference in tempera-
ture as quickly as possible.

- The water resulting from the
air conditioning condensation
is discharged via an open-
ing provided for this purpose;
therefore, a puddle of water
may form underneath the ve-
hicle when stationary.

- In all seasons, if the weather
is cool, the air conditioning
is useful as it removes the
humidity from the air and the
condensation. Avoid driving
for prolonged periods with the
air conditioning switched off.

However, demisting resumes when
the engine is switched on again.
Switch off the rear screen and door
mirrors demisting when you consider
this necessary as low current con-
sumption reduces fuel consumption.
)
Press control 8
to set
the air intake mode,
the indicator lamp
comes on.






With Stop & Start, when demist-
ing has been activated, the STOP
mode is not available.

Demisting is switched off automatically
to prevent an excessive consumption
of current and in relation to the ambient
temperature.
It may be stopped by pressing con-
trol 7
again or when the engine is
switched off.
It must be cancelled as soon as
possible to permit renewal of the
air in the passenger compartment
and demisting.



You can store the air condition-
ing settings. Refer to the "Storing
driving positions" section.

III
52
COMFORT
DIGITAL AIR CONDITIONING (DUAL-ZONE)
The air conditioning system operates with the engine running.

Dual-zone:
this is the independent regulation of the temperature and air distri-
bution on the driver's side and the front passenger's side.
The driver and front passenger can each adjust the temperature and the distri-
bution of the air to suit their requirements.
The symbols and messages associated with the digital air conditioning controls
appear in the multifunction screen. This is the normal sys-
tem operating mode.
In accordance with the
level of comfort chosen,
pressing this control,
confi rmed by illumina-
tion of indicator lamp A
, permits au-
tomatic and simultaneous control of
all of the following functions:


- Air fl ow.

- Temperature in the passenger
compartment.

- Air distribution.

- Air conditioning.

- Automatic air recirculation.
It is advisable to leave all of the
vents open. Simply pressing one
of the controls, with the exception
of temperature regulation 2a
and
2b
, switches the system to manual
mode. Indicator lamp A
goes off.
1a-1b. Automatic operation

1a.
Automatic operation on the
driver's side

1b.
Automatic operation on the
passenger's side

2a.
Temperature adjustment on
the driver's side

2b.
Temperature adjustment on
the passenger's side

3a.
Air distribution adjustment on
the driver's side

3b.
Air distribution adjustment on
the passenger's side
4a.
Driver's zone screen

4b.
Passenger's zone screen

5.
Air fl ow adjustment

6.
Activation/deactivation of the air
conditioning

7.
Air recirculation – intake of
exterior air

8.
Rear demisting – defrosting

9.
Front demisting – defrosting

III
54
COMFORT

5. Air fl ow adjustment
The air fl ow level is indicated by the
progressive lighting of the fan blade
indicator lamps.

Reducing the fl ow to minimum
switches the air conditioning
OFF.

To prevent condensation and dete-
rioration of the quality of the air in
the passenger compartment, ensure
that an adequate fl ow of air is main-
tained.

6. Air conditioning
The air conditioning will
only operate when the
engine is running. The air
blower control (air fl ow ad-
justment) must be active in
order to obtain air conditioning.


)
Press control 6
. The indicator
lamp comes on.
In order to be effective, the air con-
ditioning must be used with the win-
dows closed.
7. Air recirculation - intake of
exterior air

Automatic air intake mode

It is activated by default
in automatic comfort reg-
ulation.
Automatic mode is acti-
vated with reverse gear or
operation of the screen-
wash.
This function permits re-
circulation of the air and isolation
the passenger compartment from
exterior fumes and odours. It is inac-
tive when the ambient temperature
is below +5 °C to avoid the risk of
misting inside the vehicle.
Closing the air intake



)
Press control 7
to close
the exterior air intake.
It must be cancelled as soon as pos-
sible to permit renewal of the air in
the passenger compartment and
demisting.

Intake of exterior air



)
Press control 7
once
to open the exterior air
intake.
While retaining the other settings,
this position allows the driver to iso-
late the passenger compartment at
any time from unpleasant exterior
odours and fumes.

)
Press the control:


- to increase the air fl ow,


- to reduce the air fl ow.


You can store the air condition-
ing settings. Refer to the "Storing
driving positions" section.

III
55
COMFORT
When starting with the engine
cold, air fl ow will reach its opti-
mum level gradually to prevent an
excessive distribution of cold air.
When entering the vehicle after it
has been parked for a fairly long
period, if the interior temperature
is very different from your comfort
setting there is no need to change
the temperature displayed in or-
der to quickly reach the level of
comfort required. The system
automatically uses its maximum
performance to correct the differ-
ence in temperature as quickly as
possible.
The water resulting from the air
conditioning condensation is dis-
charged via an opening provided
for this purpose; therefore, a pud-
dle of water may form underneath
the vehicle when stationary.
In all seasons, if the weather is
cool, the air conditioning is use-
ful as it removes the humidity
from the air and the condensa-
tion. Avoid driving for prolonged
periods with the air conditioning
switched off.
9. Front demisting - defrosting
In certain cases, the
"AUTO"
mode may not
be suffi cient to demist
or defrost the windows
(humidity, several pas-
sengers, ice).


)
Press control 9
to clear the win-
dows quickly. The indicator lamp
comes on.
This system controls the temperature,
air fl ow and intake and distributes the
ventilation to the windscreen and front
side windows.
Resuming manual control exits from
the "Demisting" mode. It must be
cancelled as soon as possible to
permit renewal of the air in the pas-
senger compartment and demisting.
Pressing one of the controls 1a

and 1b
returns the system to the
"AUTO"
mode.
8. Rear demisting - defrosting

Switch off the rear screen and exterior
mirrors demisting when you consider
this necessary as low current consump-
tion reduces fuel consumption.

The heated rear screen
operates independently
of the air conditioning
system.


)
Press control 8
, with the en-
gine running, to demist the rear
screen and the mirrors. The indi-
cator lamp comes on.
Demisting is switched off automatical-
ly to avoid excessive consumption of
current and depending on the exterior
temperature.
It may be stopped by pressing
control 8
again or when the engine
is switched off.
In this latter case, the demisting re-
sumes if the engine is switched on
again within one minute.






With Stop & Start, when demisting
has been activated, the STOP mode
is not available.