2011 Citroen DS4 cooling
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Warning lamps
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 central colour screen
associated with the satellite navigation system. 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 lamp
is on
Cause
Action/Observations
STOP
fixed, alone or
associated with
another warning lamp,
accompanied by an
audible signal and a
message in the screen. Illumination of this warning lamp is
associated with a serious braking
system, power steering, engine
lubrication 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
coolant
temperature
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 topping
up 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 engine
lubrication 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.
Page 80 of 396
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 routes
depending on the controls selected by the
driver:
- direct arrival in the passenger compartment
(air int ake),
- 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 centre
console.
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.
Page 85 of 396
83Comfort
2. Driver's side adjustment
4. Automatic visibility
programme
For maximum cooling or heating of the
passenger compar tment, it is possible
to exceed the minimum value 14 or the
maximum value 28.
)
Turn control 2
or 3
to the left until
"LO"
is displayed or to the right
until "HI"
is displayed. See "Front demisting - defrosting".
3. Passenger's side adjustment
The driver and front passenger can
each adjust the temperature to their
requirements.
The value indicated on the display
corresponds to a level of comfor t and not to a
temperature in degrees Celsius or Fahrenheit.
)
Turn control 2
or 3
to the left or to the right
respectively to decrease or increase this
value.
A setting around the value 21 provides
optimum comfort. 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 changing
a setting. The the "AU TO "
indicator lamps go
off; the other functions will still be controlled
automatically.
)
Pressing the "AU TO "
button returns the
system to completely automatic operation.
With Stop & Star t, when demisting has
been activated, the STOP mode is not
available.
Page 238 of 396
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 engine 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 avoid any 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,
to check 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
Page 275 of 396
273Practical information
Changing a wiper blade
Before removing a front
wiper blade
)
Within one minute after switching off
the ignition, operate the wiper stalk to
position 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 front
bumper.
)
Press around its edge to engage its fixing
clips one by one.
Removal
)
Use a screwdriver as a lever to release
each fixing clip in turn.
* According to country. Do not forget to remove the very cold
climate screen:
- when the ambient temperature
exceeds 10 °C,
- when towing,
- at speeds above 75 mph (120 km/h).
Page 279 of 396
277Practical information
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 the
heaviest 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 by 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 incline
depends on the gradient and the ambient
temperature.
In all cases, keep a check on the coolant
temperature.
Braking
Towing a trailer increases the braking distance.
To avoid overheating of the brakes on a long
mountain type of descent, the use of engine
braking is recommended.
Ty r e s
)
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
the engine as soon as possible.