2012 Citroen DS4 cooling

When the engine is running or the vehicle is
being driven, the illumination of one of the following warning lamps indicates a malfunction
which requires action on the par t of the driver.
The warning comes on in the instrument panel
or appears in the t
ype 2 instrument panel central screen.
If your vehicle has a screen, a warning lamp coming on is always accompanied by the display of an additional message, to assist you in identifying the problem.If you encounter any problems, do not hesitate to contact a CITROËN dealer or a qualified
workshop.

Warning lampis onCauseAction/Observations
STOP
fixed, alone or associated with
another warning lamp,
accompanied by an
audible si
gnal and a
message in the screen. Illumination o
f this warning lamp is
associated with a serious brakingsystem, power steering, enginelubrication or cooling system
malfunction or a punctured tyre.
Stop as soon as it is safe to do so as there is a risk that
the engine will cut out while driving.
Park, switch off the ignition and contact a CITROËN
dealer or a qualified workshop.
Maximum coolanttemperature
fixed red. The temperature of the cooling system is too high. Stop as soon as it is safe to do so.
Wait until the engine has cooled down before toppingup the level, if necessary.
If the problem persists, contact a CITROËN dealer or qualified workshop.
Engine oil pressure
fixed. There is a fault with the enginelubrication system. You must stop as soon it is safe to do so.
Park, switch off the ignition and contact a CITROËN
dealer or a qualified workshop.

Vent ilat ion
Air intake
The air circulating in the passenger compar tment
is filtered and originates either from the outside
via the grille located at the base of the windscreen or from the inside in air recirculation mode.
Air treatment
The incoming air follows various routesdepending on the controls selected by thedriver:
- direct arrival in the passenger compartment (air intake),
- passage through a heating circuit (heating),
- passage through a cooling circuit (air conditioning).
Control panel
The controls of this system are grouped
together on control panel A on the centreconsole.


Air distribution
1.Windscreen demisting-defrosting vents.
2. Front side window demisting-defrosting
vents. 3. Side adjustable air vents.
4.
Central adjustable air vents.
5. Air outlets to the front footwells.
6.Air nozzles to the front footwells. 7. Air outlets to the rear footwells.

83Comfort

2. Driver's side adjustment 4. Automatic visibilityprogramme

For maximum cooling or heating of thepassenger compar tment, it is possibleto exceed the minimum value 14 or themaximum value 28.)
Turn control 2or 3
to the left until
"LO"is displayed or to the right until "HI"
is displayed. See "Front demistin
g - defrosting".

3. Passenger's side adjustment
The driver and front passenger can each adjust the temperature to their requirements.
The value indicated on the displaycorresponds to a level of comfor t and not to a
temperature in degrees Celsius or Fahrenheit.
)Turn control 2or 3to the left or to the right respectively to decrease or increase this
v
alue.
A setting around the value 21 provides optimumcomfort. However, depending on your requirements,
a setting between 18 and 24 is normal. You are advised to avoid a left/right setting
difference of more than 3.

Manual operation

If you wish, you can make a different choice from that offered by the system by changinga setting. The the "AUTO"indicator lamps gooff; the other functions will still be controlled
automatically.
) Pressing the "AUTO"
button returns the system to completely automatic operation.
With Stop & Start, when demisting hasbeen activated, the STOP mode is not available.

Changing the coolant
The coolant does not have to be changed.


Coolant specifi cation

The coolant must conform to the
manufacturer's recommendations.

Coolant level
The coolant level should be close
to the "MA X" mark but should never exceed it. When the engine is warm, the
temperature of the coolant is regulated by the fan. This can operate with the ignition off.
On vehicles which are fitted with a par ticle
emission filter, the fan may operate after
the vehicle has been switched off, even if
the en
gine is cold.
In addition, as the cooling system is pressurised,
wait at least one hour after switching off the engine before carrying out any work.
To a v o i d a ny risk of scalding, unscrew the cap by two turns to allow the pressure to drop. When the pressure has dropped, remove the cap and top up the level.
Power steering fluid level
The power steering fluid level should
be close to the "MA X" mark. Unscrew
the cap, with the engine cold, tocheck the level. To check the level or top up the
fluid on vehicle fitted with headlamp
washers
, immobilise the vehicle and switch of the engine.

Screenwash/headlamp wash
level

275
Practical information








Changing a wiper blade


Before removing a front
w
iper blade
)Within one minute after switching off
the ignition, operate the wiper stalk toposition the wiper blades ver tically on the
windscreen.

Removing
)Raise the corresponding wiper arm.)Unclip the wiper blade and remove it.
Fitting
)
Put the corresponding new wiper blade in
place and clip it.
) Fold down the wiper arm carefully.
After fitting a front wiper
blade
)
Switch on the ignition. )
Operate the wiper stalk again to park the
wiper blades.










Very cold climate screen * Removable protective screen which prevents
the accumulation of snow at the radiator
cooling fan.

Fitting
)
Offer up the very cold climate screen to
the front of the lower section of the frontbumper. ) Press around its edge to engage its fixingclips one by one.



Removal
)
Use a screwdriver as a lever to releaseeach fixing clip in turn.

* Accordin
g to country.

Do not forget to remove the very coldclimate screen:


- when the ambient temperature exceeds 10 °C,

- when towing,

- at speeds above 75 mph (120 km/h).

The rear parking sensors will be deactivated automatically if a genuine CITROËN towbar is used.

Driving advice
Distribution of loads
)Distribute the load in the trailer so that theheaviest items are as close as possible to
the axle and the nose weight approaches the maximum permitted without exceeding it.
Air density decreases with altitude, thus reducing engine per formance. Above
1 000 metres, the maximum towed load must
be reduced b
y 10 % for every 1 000 metres of altitude.
Refer to the "Technical Data" section for details
of the weights and towed loads which apply to your vehicle.
Side wind
)Take into account the increased sensitivity
to side wind.

Cooling

Towing a trailer on a slope increases the
temperature of the coolant.
As the fan is electrically controlled, its cooling capacity is not dependent on the engine speed.)
To lower the engine speed, reduce your speed.
The maximum towed load on a long inclinedepends on the gradient and the ambient
temperature.
In all cases, keep a check on the coolant
temperature.

Braking

To w i ng a trailer increases the braking distance.
To a v o i d o v e r h e a t i ng of the brakes on a long
mountain type of descent, the use of enginebraking is recommended.


Tyres
)Check the tyre pressures of the towing
vehicle and of the trailer, obser ving the recommended pressures.



Lighting
)Check the electrical lighting and signalling on the trailer.
)If the warning lamp and the
STOP warning lamp come on, stop the vehicle and switch off
t
he engine as soon as possible.