2014 Citroen DS4 check engine

Blind spot sensors
This driving assistance system warns the driver
of the presence of another vehicle in the blind
spot angle of their vehicle (areas masked from
the driver's field of vision), as soon as this
presents a potential danger.
Operation
This system is designed to improve safety when driving and is in no circumstances a
substitute for the use of the interior rear view mirror and door mirrors. It is the driver's
responsibility to constantly check the traffic, to assess the distances and relative speeds of
other vehicles and to predict their movements before deciding whether to change lane.
The blind spot sensor system can never replace the need for vigilance on the part of the
driver.F

O
n switching on the ignition, or engine
running, press this button to activate the
function; the warning lamp comes on.
Sensors fitted in the front and rear bumpers
monitor the blind spots.
A warning lamp appears in the door mirror on
the side in question:
-
i
mmediately, when being overtaken,
-
a
fter a delay of about one second, when
overtaking a vehicle slowly.

235
Fuel used for petrol engines
The petrol engines are compatible with
E10 bio-petrol (containing 10 % ethanol),
conforming to European standards EN 228
and EN 15376.
E85 type fuels (containing up to 85 % ethanol)
are reserved exclusively for vehicles marketed
for the use of this type of fuel (BioFlex
vehicles). The quality of the ethanol must
comply with European standard EN 15293.
Fuel used for di esel
engines
The Diesel engines are compatible with
biofuels which conform to current and future
European standards (Diesel fuel which
complies with standard EN 590 mixed with
a biofuel which complies with standard
EN
14214) available at the pumps (containing
up to 7 % Fatty Acid Methyl Ester).
B30 biofuel can be used in certain Diesel
engines. However, this use, even occasional,
requires strict application of the special
servicing conditions. Contact a CITROËN
dealer or a qualified workshop.
The use of any other type of (bio)fuel
(vegetable or animal oils, pure or diluted,
domestic fuel...) is strictly prohibited (risk of
damage to the engine and fuel system).
Checks

Travelling abroad
As Diesel fuel pump nozzles may
be different in other countries, the
presence of the misfuel prevention
device may make refuelling impossible.
Not all Diesel vehicles are fitted with
misfuel protection, so before travelling
abroad, we recommend that you check
with the CITROËN dealer network,
whether your vehicle is suitable for the
fuel pumps in the country in which you
want to travel.
Misfuel prevention (Diesel)*Mechanical device which prevents filling the tank of a Diesel vehicle with petrol. It avoids the risk of
engine damage that can result from filling with the wrong fuel.
Located in the filler neck, the misfuel prevention device appears when the filler cap is removed.
When a petrol filler nozzle is introduced into the
fuel filler neck of your Diesel vehicle, it comes
into contact with the flap. The system remains
closed and prevents filling.
do n
ot persist but introduce a d
i
esel type
filler nozzle.
Operation
It remains possible to use a fuel can to
fill the tank.
In order to ensure a good flow of fuel,
do not place the nozzle of the fuel can
in direct contact with the flap of the
misfuel prevention device and pour
s l ow l y.
* Depending on country of sale.

237
Running out of fuel (Diesel)
On vehicles fitted with Diesel engines, the fuel
system must be primed if you run out of fuel.
For all versions other than BlueHDi, refer to the
corresponding engine compartment view.1.6 Hdi engine
If the tank on your vehicle is fitted with
a misfuel prevention device, refer to the
"Misfuel prevention (Diesel)" section.
2.0 Hdi engine
If the engine does not start first
time, don't keep trying but start the
procedure again from the beginning.
BlueHdi engines
F Fill the fuel tank with at least five litres of Diesel.
F

S
witch on the ignition (without starting the
engine).
F

W
ait around 6 seconds and switch off the
ignition.
F

R
epeat the operation 10 times.
F

O
perate the starter to run the engine. F

F
ill the fuel tank with at least five litres of
diesel.
F
O
pen the bonnet.
F
I
f necessary, unclip the styling cover for
access to the priming pump.
F
S
queeze and release the priming pump
repeatedly until resistance is felt (there
may be resistance at the first press).
F
O
perate the starter until the engine starts
(if the engine does not start at the first
attempt, wait around 15 seconds before
trying again).
F
I
f the engine does not start after a few
attempts, operate the priming pump again
then start the engine.
F
R
efit the styling cover and clip it in place.
F C lose the bonnet.F
F
ill the fuel tank with at least five litres of
Diesel.
F
O
pen the bonnet.
F
I
f necessary, unclip the style cover for
access to the priming pump.
F
S
lacken the bleed screw.
F
S
queeze and release the priming pump
repeatedly until fuel appears in the
transparent pipe.
F
T
ighten the bleed screw.
F
O
perate the starter until the engine starts
(if the engine fails to start at the first
attempt, wait around 15 seconds before
trying again).
F
I
f the engine fails to start after a few
attempts, operate the priming pump again,
then the starter.
F P ut the style cover back in position and
clip it in place, ensuring that it has clipped
c o r r e c t l y.
F

C
lose the bonnet.
Checks

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.

239
Petrol engines
The various caps and covers allow access for
checking the levels of the various fluids and for
replacing certain components.
1.
P
ower steering reservoir.
2.
S

creenwash and headlamp wash reservoir.
3.
C

oolant reservoir.
4.
B

rake fluid reservoir.
5.
B

attery/Fuses.
6.
F

usebox.
7.
A

ir filter.
8.
E

ngine oil dipstick.
9.
E

ngine oil filler cap.
Checks

Diesel engines
The various caps and covers allow access for
checking the levels of the various fluids, for
replacing certain components and for priming
the fuel system.
1.
P
ower steering reservoir.
2.
S

creenwash and headlamp wash reservoir.
3.
C

oolant reservoir.
4.
B

rake fluid reservoir.
5.
B

attery/Fuses.
6.
F

usebox.
7.
A

ir filter.
8.
E

ngine oil dipstick.
9.
E

ngine oil filler cap.
10.
P

riming pump*.
11.
B

leed screw*.
* According to engine.

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