2014 Citroen DS4 cooling

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 part of the driver.
The warning comes on in the instrument panel or
appears in the type 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 /indicator lampis 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 fault with
the braking system, power steering,
engine lubrication system or cooling
system.
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.
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.

Ventilation
Air intake
The air circulating in the passenger compartment
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:
-
d
irect arrival in the passenger
compartment (air intake),
-

p
assage through a heating circuit (heating),
-

p
assage 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. F ront side window demisting-defrosting
vents.
3.
S

ide adjustable air vents. 4. C
entral adjustable air vents.
5. A ir outlets to the front footwells.
6.
A

ir nozzles to the front footwells.
7.
A

ir outlets to the rear footwells.

2. driver's side adjustment 4. A utomatic visibility
programme
For maximum cooling or heating of the
passenger compartment, it is possible
to exceed the minimum value 14 or the
maximum value 28.
F

T
urn 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 comfort and not to a
temperature in degrees Celsius or Fahrenheit.
F

T

urn 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 "AUTO" indicator lamps go
off; the other functions will still be controlled
automatically.
F

P
ressing the "AUTO" button returns the
system to completely automatic operation.
With Stop & Start, when demisting has
been activated, the STOP mode is not
available.

Bonnet
Opening
F Open the front left door.
F P ull the interior bonnet release lever A ,
located at the bottom of the door aperture. F

P
ush the exterior safety catch B to the left
and raise the bonnet.
F
U
nclip the stay C from its housing on the
back of the bonnet.
F

F
ix the stay in the notch to hold the bonnet
open.
The location of the interior bonnet
release lever prevents opening of
the bonnet while the front left door is
closed. Do not open the bonnet in high winds.
When the engine is hot, handle the
exterior safety catch and the bonnet
stay with care (risk of burns).
Before doing anything under the bonnet,
switch off the Stop & Start system to
avoid any risk of injury resulting from an
automatic change to START mode.
Closing
F Take the stay out of the support notch.
F
C lip the stay in its housing on the back of
the bonnet.
F

L
ower the bonnet and release it at the end
of its travel.
F

P
ull on the bonnet to check that it is
secured correctly.
The cooling fan may star t after switching
off the engine: take care with ar ticles and
clothing that might be caught by the fan
blades.
Because of the presence of electrical
equipment under the bonnet, it is
recommended that exposure to water
(rain, washing, ...) be limited.

241
Checking levels
Check all of these levels regularly, in line with the manufacturer's service schedule. Top them up if necessary, unless other wise indicated.
If a level drops significantly, have the corresponding system checked by a CITROËN dealer or a qualified workshop.
Engine oil level
It is normal to top up the oil level between
two services (or oil changes). CITROËN
recommends that you check the level, and top
up if necessary, every 3 000 miles (5 000 kms).The check is carried out either when
the ignition is switched on using the
oil level indicator in the instrument
panel for vehicles so equipped, or
using the dipstick.
Take care when working under the
bonnet, as certain areas of the engine
may be extremely hot (risk of burns)
and the cooling fan could start at any
time (even with the ignition off).
Checking using the dipstick
F Locate the dipstick in the engine
compartment of your vehicle.
Refer to the "Petrol engine" or "Diesel engine"
section.
F

T
ake the dipstick by its coloured grip and
remove it completely.
F

W
ipe the end of the dipstick using a clean
non-fluffy cloth.
F

R
efit the dipstick and push fully down, then
pull it out again to make the visual check:
the correct level is between the marks A
and B .
A = MA X
B = MIN If you find that the level is above the A mark or
below the B mark, do not star t the engine
.
-

I
f the level is above the MAX mark (risk
of damage to the engine), contact a
CITROËN dealer or a qualified workshop.
-

I
f the level is below the MIN mark, you
must top up the engine oil.
To ensure that the reading is correct,
your vehicle must be parked on a level
sur face with the engine having been off
for more than 30 minutes.
Oil grade
Before topping-up the oil or changing the oil,
check that the oil is the correct grade for your
engine and conforms to the manufacturer's
recommendations.
Checks

243
Coolant level
The coolant level should be close
to the "MA X" mark but should never
exceed it.
Fluid specification
The coolant must conform to the
manufacturer's recommendations.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 fluid level
The cooling fan may star t after
switching off the engine: take care
with articles and clothing that might
be caught by the fan blades.
When the engine is warm, the temperature of
the coolant is regulated by the fan.
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.
F
O
pen the bonnet and secure it with the
st ay.
F
O
pen the screenwash reservoir filler cap.
F
T
ake and pinch the level gauge to block its
breather.
F
R
emove the gauge completely from
the reservoir to read the level in the
transparent section.
F
T
op up if necessary.
F
R
efit the filler cap to the reservoir and
close the bonnet.
Specification of the fluid
To ensure optimum cleaning and to avoid
freezing, the fluid should never be topped up or
replaced by plain water.
In wintry conditions, the use of a fluid
with an ethyl alcohol or methanol base is
recommended.
Checks

293
Changing a wiper blade
Before removing a front
wiper blade
F Within one minute after switching off the ignition, operate the wiper stalk to
position the wiper blades vertically on the
windscreen.
Removing
F Raise the corresponding wiper arm.
F U nclip the wiper blade and remove it.
Fitting
F Put the corresponding new wiper blade in place and clip it.
F

F
old down the wiper arm carefully.
After fitting a front wiper
blade
F Switch on the ignition.
F O perate the wiper stalk again to park the
wiper blades.
Very cold climate screen*
Fitting
F Offer up the very cold climate screen to the front of the lower section of the front
b u m p e r.
F

P
ress around its edge to engage its fixing
clips one by one.
Removal
F Use a screwdriver as a lever to release each fixing clip in turn.
Do not forget to remove the very cold
climate screen when:
-

the ambient temperature exceeds 10 °C,- towing,- driving at speeds above 75 mph
(120 km/h).
Removable protective screen which prevents
the accumulation of snow at the radiator
cooling fan.
* Depending on country of sale.
Practical information

driving advice
distribution of loads
F 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.
Side wind
F 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.
F

T
o 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.
F

I
f the warning lamp and the STOP
warning lamp come on, stop the
vehicle and switch off the engine
as soon as possible.
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
F Check the tyre pressures of the towing vehicle and of the trailer, observing the
recommended pressures.
Lighting
F Check the electrical lighting and signalling on the trailer.
Refer to the "Technical data" section for
details of the weights and towed loads
which apply to your vehicle.
The rear parking sensors will be
deactivated automatically if a genuine
CITROËN towbar is used.