2012 Citroen DS4 check engine

Checks


Air filter and passenger compartment filter


Oil filter
Unless other wise indicated, check these components in accordance with the ser vicing booklet and according to your engine.
Other wise, have them checked b
y a CITROËN dealer or a qualified workshop.
The batter
y does not require anymaintenance.
However, check that the terminals
are clean and correctl
y tightened, particularly in summer and winter.
When carrying out work on the battery, refer
to the "Practical information" section for
details of the precautions to be taken before
disconnecting the battery and following itsreconnection. Re
fer to the ser vicing booklet for
details of the replacement inter vals
for these components.
Depending on the environment(e.g. dusty atmosphere) and the use of the vehicle (e.g. city driving), replace them twice as often if necessary(refer to the "Engines" section). y A clogged passenger compar tment filter mayhave an adverse effect on the performance
of the air conditioning system and generate undesirable odours.
Re
place the oil filter each timethe engine oil is changed.
Refer to the ser vicing booklet for
details of the replacement inter val for
this component.
The presence of this label, in particular with the Stop & Star t system, indicates the use of a specific 12 V lead-acid battery with special technology and specification. The involvement of a CITROËN dealer or a qualified workshop is essential when replacingor disconnecting the battery.

Electric parking brake
This system does not require anyroutine servicing. However, in the event of a problem, have the system checked by a CITROËN dealer or aqualified workshop.
For more information, see "Driving - Electric
parking brake - § Operating faults".

















Only use products recommended by CITROËN or products of equivalent quality and specification. In order to optimise the operationof units as impor tant as the braking system, CITROËN selects and offersvery specific products.
To a v o i d d a m aging the electrical units,the use of a high pressure washer in the engine compar tment is strictly
prohibited.Brake disc wear

For information on checking brake
disc wear, contact a CITROËN dealer
or a qualified workshop.


Manual parking brake
If a loss of effectiveness of this
system is noticed, the parking brake must be checked, even betweentwo services.
Checking this system must be done by aCITROËN dealer or a qualified workshop.
Brake pads
Brake wear depends on the styleof driving, par ticularly in the case of vehicles used in town, over shor t
distances. It may be necessary to have the condition of the brakes checked,even between vehicle services. Unless there is a leak in the system, a drop in
the brake fluid level indicates that the brake pads are worn.

247Practical information

1. Sealing
)
Uncoil the white pipe G
fully.)
Unscrew the cap from the white pipe.
)
Connect the white pipe to the valve of the
tyre to be repaired.

Repair procedure

Avoid removing any foreign bodieswhich have penetrated into the tyre.
)
Connect the compressor's electric plug to
the vehicle's 12 V socket.
) Star t the vehicle and leave the engine
running.
)Switch off the ignition. )Turn the selector A to the
"sealant" position. )Check that the switch B
is in position "O"
.
Take care, this product is harmful (e.g. ethylene-glycol, colophony...) if swallowed and causes irritation to theeyes.Keep it out of reach of children.

Removing the cartridge
)Stow the black pipe.)Detach the angled base from the white pipe. )Suppor t the compressor ver tically.)Unscrew the car tridge from the bottom.



Checking tyre pressures/
inflatin
g accessories

Beware of discharges of fluid.
The expiry date of the fluid is indicated
on the car tridge.The sealant car tridge is designed for single use; even if only partly used, itmust be replaced. After use, do not discard the car tridge into the environment, take it to anauthorised waste disposal site or aCITROËN dealer.
Do not forget to obtain a new sealantcartridge, available from CITROËN
dealers or from a qualified workshop.

You can also use the com
pressor, without
injecting any product, to:


- check or adjust the pressure of your tyres,

- inflate other accessories (balls, bicycle
tyres...).
)Connect the compressor's electrical connector to the vehicle's 12 V socket.)Start the vehicle and let the engine run.)Adjust the pressure using the compressor
(to inflate: switch B
in position "I"
; to deflate: switch B
in position "O"and press button C), according to the vehicle's tyrepressure label or the accessory's pressure label. )Remove the kit then stow it.
)
Turn the selector A
to the "A ir" position. )
Uncoil the black pipe H
fully.)
Connect the black pipe to the
valve of the wheel or accessory.
If necessary, fit one of the adaptorssupplied with the kit first.

271Practical information














12 V battery
Procedure for starting the engine using another battery or for charging your flat battery.
The battery is located under the bonnet.
For access to the (+) terminal:
) Release the bonnet using the interior lever,
then the exterior safety catch, ) raise the bonnet and secure it with its stay, )
lift the plastic cover for access to the (+)
terminal.
Access to the battery

After refitting the battery, the Stop & Start system will only be active after acontinuous period of immobilisation of the vehicle, a period which depends on the climatic conditions and the state of charge of the battery (up to about 8 hours).
The presence of this label, in particular with the Stop & Star t system, indicatesthe use of a 12 V lead-acid battery withspecial technology and specification;
the involvement of a CITROËN dealer or a qualified workshop is essential when replacing or disconnecting the battery.

Check that the battery posts and terminals are clean. If they are coveredwith sulphate (white or green deposit), disconnect them and clean them.


Batteries contain harmful substancessuch as sulphuric acid and lead. Theymust be disposed of in accordancewith regulations and must not, in any circumstances, be discarded with household waste. Ta k e used cell batteries and vehiclebatteries to an authorised collection point.



Before doing any work
Immobilise the vehicle: apply theparking brake, put the gearbox inneutral *
, then switch off the ignition. Check that all electrical equipment is switched off.


*
or position Pfor an automatic gearbox.

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.

291Technical data

















Identifi cation markings
Various visible markings for the identification of your vehicle.
A.
Vehicle identification number (VIN) under the bonnet. This number is engraved on the bodywork near
the engine mounting.
B. Vehicle identification number on the
dashboard.
This number is indicated on a self-adhesive
label which is visible through the windscreen.
D. Tyre/paint label.This label is affixed to the driver's front pillar.
Wheels which are fitted with 225/40 R18tyres cannot be fitted with snow chains.For more information, contact a CITROËNdealer or a qualified workshop.

Low tyre pressures increase fuelconsumption.

The tyre pressures must be checked when the tyres are cold, at least oncea month. C. Manufacturer's label
.The VIN is indicated on a self-destroying labelaffixed to the driver's centre pillar. It bears the
following information:


- the tyre pressures, for unladen and ladenconditions,

- the wheel rim and tyre sizes,

- the brands of tyre recommended by themanufacturer,

- the spare tyre inflation pressure,

- the paint colour code.

385
Visual search
Technical data - Maintenance


Running out of Diesel fuel 234

Checking levels 237-239


- oil

- brake fluid

- coolant

- power steering fluid

- screenwash/headlamp wash fluid
-
additive (Diesel with particle emissions filter)



Changing bulbs 258 -265


- front

- rear


Petrol en
gines 286-287
Diesel engines 288-289
Dimensions 290
Identification markings 291

Bonnet 2
33
Petrol underbonnet 235
Diesel underbonnet 236
Checking components 240 -242
- battery- air filter/passenger compartment filter
- oil filter
- particle emissions filter (Diesel)
- brake pads/discs

Batter
y 271-273
Energy economy mode 274
En
gine compar tment
fuses 266, 269 -270