2017 Citroen DS4 check engine

202
DS4_en_Chap06_conduite_ed01-2016
System which keeps your vehicle immobilised
temporarily (approximately 2 seconds) when
starting on a gradient, the time it takes to
move your foot from the brake pedal to the
accelerator pedal.
This function is only active when:
-
t
he vehicle is completely stationary, with
your foot on the brake pedal,
-

w
hen certain conditions of gradient are
met,
-

w
ith the driver’s door closed.
The hill start assist function cannot be
deactivated.
Hill start assist
On an ascending slope, with the vehicle
stationar y, the vehicle is held for a brief
moment when you release the brake pedal.
-

W
ith a manual gearbox, if you are in first
gear or neutral.
-

W
ith an automatic gearbox, if you are in
position D or M .
Operation
Do not leave the vehicle while it is
being held in the hill start assist phase.
If you need to leave the vehicle while
the engine is running, apply the parking
brake manually then ensure that the
parking brake warning lamp is on (not
flashing) in the instrument panel. On a descending slope, with the vehicle
stationary and reverse gear engaged, the
vehicle is held for a brief moment when you
release the brake pedal.
Operating fault
If a fault occurs with the system, these warning
lamps come on. Contact a CITROËN dealer
or a qualified workshop to have the system
checked.
06
Driving

208
DS4_en_Chap06_conduite_ed01-2016
Operating fault
In some cases, such as the maintaining of a
comfortable temperature in the passenger
compartment, it may be useful to deactivate the
Stop & Start.
Deactivation can be requested at any time once
the ignition has been switched on.
If the engine is in STOP mode, it restarts
straight away.
The Stop & Start is reactivated automatically
each time the ignition is switched on.
Deactivation / Reactivation
In the event of a fault in STOP mode, the
vehicle may stall. All of the instrument panel
warning lamps come on.
Depending on version, an alert message may
also be displayed asking you to put the gear
lever into position N and put your foot on the
brake pedal.
It is then necessary to switch off the ignition,
then restart the engine.
The Stop & Start requires a 12
V
battery with special technology and
specifications. All work on this type of
battery must be carried out exclusively
by a CITROËN dealer or a qualified
workshop.
For more information on the 12 V
battery , refer to the corresponding
section. In the event of a malfunction with
the system, the "ECO OFF" switch
warning lamp flashes, then comes on
continuously.
With the switch on the dashboard
Pressing the switch again reactivates
the system. F

P
ress this switch.
Deactivation is confirmed by the illumination of
the indicator lamp in the control switch and the
display of a message. Driving on flooded roads
Before driving through a flooded road,
it is strongly recommended that you
deactivate the Stop & Start system.
For more information on Driving
advice
, particularly on flooded roads,
refer to the corresponding section. Opening the bonnet
Before doing anything under the
bonnet, deactivate the Stop & Start
system to avoid the risk of injury related
to an automatic change to START
mode.
Ha
ve it checked by a CITROËN dealer or a
qualified workshop.
The indicator lamp in the switch goes off,
accompanied by the display of a message.
06
Driving

210
DS4_en_Chap06_conduite_ed01-2016
Blind spot monitoring system
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
d
river. 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.
06
Driving

229
DS4_en_Chap07_info-pratiques_ed01-2016
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
intend 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 not persist but introduce a Diesel 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 the country of sale.
07
Practical information

242
Bonnet
Opening
F Pull 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, deactivate 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.
F

O

pen the front left door.
07
Practical information

245
DS4_en_Chap07_info-pratiques_ed01-2016
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).
The location of the dipstick is shown in the
corresponding underbonnet layout view.
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.
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.
Checking using the dipstick
F Refit 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 .
07
Practical information

246
Power steering fluid level
The power steering fluid level should
be close to the "MA X" mark. With
the engine cold, unscrew the cap to
check the level.
Brake fluid level
Changing the fluid
Refer to the manufacturer's service schedule
for details of the interval for this operation.
Fluid specification
The brake fluid must conform to the
manufacturer's recommendations.The brake fluid level should be close
to the "MA X" mark. If it is not, check
the brake pad wear.
Topping up the engine oil level
The location of the oil filler cap is shown in the
corresponding underbonnet layout view.
F

U
nscrew the oil filler cap to reveal the filler
aperture.
F

A
dd oil in small quantities, avoiding any
spills on engine components (risk of fire).
F

W
ait a few minutes before checking the
level again using the dipstick.
F

A
dd more oil if necessary.
F

A
fter checking the level, carefully refit the
oil filler cap and the dipstick in its tube.
After topping up the oil, the check when
switching on the ignition with the oil level
indicator in the instrument panel is not valid
during the 30 minutes after topping up.
Engine oil change
Refer to the manufacturer's service schedule
for details of the interval for this operation.
In order to maintain the reliability of the engine
and emission control system, never use
additives in the engine oil.
07
Practical information

247
DS4_en_Chap07_info-pratiques_ed01-2016
Coolant level
Check the coolant level regularly.
It is normal to top up this fluid
between services.
To ensure that the measurement is reliable, the
vehicle must be parked on level ground and the
engine must be cold.
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.
The coolant level should be close to the "MA X"
mark but should never exceed it.
If the level is close to or below the "MIN" mark,
it is essential to top up.
A low coolant level presents a risk of serious
damage to your engine. When the engine is hot, the temperature of the
coolant is regulated by the fan.
When the engine is hot, as the cooling system is
pressurised, wait at least one hour after switching
off the engine before carrying out any work.
To avoid the risk of scalding in the event of
an urgent need to top up, with a cloth around
the cap, unscrew it by two turns to allow the
pressure to drop.
Once the pressure has dropped, remove the
cap and top up the level.
Fluid specification
The coolant must conform to the
manufacturer's recommendations.
07
Practical information