2012 Citroen DS4 air filter

35
Limit the causes of excess
consumption
Spread loads throughout the vehicle; placethe heaviest items in the bottom of the boot, as close as possible to the rear seats. Limit the loads carried in the vehicle andreduce wind resistance (roof bars, roof rack,bicycle carrier, trailer...). Use a roof box in preference. Remove roof bars and roof racks after use.


At the end of winter, remove snow tyres andrefit your summer tyres.



Observe the recommendations
on maintenance


Check the tyre pressures regularly, whencold, referring to the label in the door aperture, driver's side.
Carry out this check in par ticular:


- before a long journey,

- at each change of season,

- after a long period out of use.
Don't forget the spare wheel and the tyres on any trailer or caravan.


Have your vehicle ser viced regularly (engineoil, oil filter, air filter...) and obser ve theschedule of operations recommended by the manufacturer.




When refuelling, do not continue after the 3 rdcut-off of the nozzle to avoid any overflow.

At the wheel of your new vehicle, it is only after the first 1 800 miles (3 000 kilometres) that you will see the fuel consumption settledown to a consistent average.
Switch off the headlamps and front foglamps when the level of light does not require their use.

Avoid running the engine before moving off,particularly in winter; your vehicle will warmup much faster while driving.

As a passenger, if you avoid connecting your multimedia devices (film, music, videogame...), you will contribute towards limitingthe consumption of electrical energy, and soof fuel. Disconnect your por table devices beforeleaving the vehicle.

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 routesdepending on the controls selected by thedriver:
- direct arrival in the passenger compartment (air intake),
- 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 centreconsole.


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.

79Comfort










Recommendations for ventilation and air conditioning


If after an extended stop in sunshine, the interior temperature is veryhigh, first ventilate the passenger compartment for a few moments. Put the air flow control at a setting high enough to quickly change the air in the passenger compartment.
The air conditioning system does notcontain chlorine and does not present any danger to the ozone layer.

In order for these systems to be fully effective, follow the operation and maintenance guidelines below: )
To obtain an even air distribution, take care not to obstruct the exterior air intake grilles located at the base of the windscreen, the nozzles, the vents and the air outlets, as wellas the air extractor located in the boot. )
Do not cover the sunshine sensor, located on the dashboard; this is used for regulation of the digital air conditioning system. )
Operate the air conditioning system for at least 5 to 10 minutes, once or twice a monthto keep it in per fect working order. )
Ensure that the passenger compar tment filter is in good condition and have the filter elements replaced regularly (refer to the "Checks" section). We recommend the use of a combined passenger compartment filter. Thanks to its special active additive, it contributes to the purification of the air breathed by theoccupants and the cleanliness of the passenger compartment (reduction of allergic symptoms, bad odours and greasy deposits).)
To ensure correct operation of the air conditioning system, you are also advised to haveit checked regularly as recommended in the ser vicing booklet.
)
If the system does not produce cold air, switch it off and contact a CITROËN dealer or a qualified workshop.
When towing the maximum load on a steep gradient in high temperatures, switching off theair conditioning increases the available engine power and so improves the towing ability.


The condensation created by the air conditioning results in a dischargeof water under the vehicle which is perfectly normal.




Stop & Start
The heating and air conditioning systems only work when the engine is running. To maintaina comfor table temperature in the passenger compartment, you can temporarily deactivatethe Stop & Start system (see "Driving").

235
Checks














Petrol engines

The various caps and covers allow access for
checking the levels of the various fluids and for
replacing cer tain components.
1. Power steering reservoir.2.Screenwash and headlamp wash reservoir.3.Coolant reservoir.4.
Brake fluid reservoir.
5. Battery/Fuses.
6.Fusebox.
7. Air filter.8.Engine oil dipstick.9.
Engine oil filler cap.

Diesel engines
The various caps and covers allow access for
checking the levels of the various fluids, for replacing cer tain components and for primingthe fuel system.
1.
Power steering reservoir.2.
Screenwash and headlamp wash reservoir.3.
Coolant reser voir. 4.
Brake fluid reservoir.5.
Battery/Fuses.
6.Fusebox.7. Air filter.8.Engine oil dipstick. 9.
Engine oil filler cap.10.Priming pump *
. 11.
Bleed screw *
.
*
Accordin
g to 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.

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

A
ABS and EBFD systems...............................178Accessories..................................................281Accessory socket,12 V ......................................146, 147,151,157Adjusting headlamps ....................................130Adjusting head restraints ................................90Adjusting seat belt height ...................... 181, 182Adjusting the steering wheel...........................94Airbags, curtain.....................................189,190Airbags, front.........................................186,190Airbags, lateral......................................188,190Air conditioning...............................................34Air conditioning,
digital ......................................................79,82Air conditioning,
manual ....................................................79,80Air filter..........................................................r240Air flow............................................................34Air vents..........................................................78Alarm.............................................................109Anti-lock braking system (ABS)..........................................................178Anti-pinch ......................................................115Anti-theft........................................................103Armrest, front........................................ 149,150Armrest, rear.................................................r154Ashtray, por table...........................................145Assistance call......................................175, 296Audible warning............................................175Audio streaming (Bluetooth)........336, 362, 364Audio system...........................................64,349Automatic illumination of
headlamps ..........................................125, 128
Automatic operation of hazard
warning lamps.............................................175Automatic rain sensitive windscreen
wipers .................................................133, 134
Auxiliary socket.....................................337,361Auxiliary sockets ...........................................146
Backup starting .............................................271Battery...................................................240, 271Battery, charging...........................................271Battery, remote control.........................105,106Black panel......................................................60Blind spot sensors.........................................218Bluetooth (hands-free)........................................320,363Bluetooth (telephone)..................................................320Bonnet ...........................................................233Bonnet stay ...................................................233Boot...............................................................114Boot lamp..............................................140, 157Brake discs....................................................242Brake lamps..................................................263Brake pads ....................................................242Brakes ...........................................................242Braking assistancesystem .........................................................178
BC
Capacity, fuel tank........................................117CD.................................................................356CD MP3 .................................................357,358Central locking......................................102,107Centre console ..............................................147Changing a bulb ....................................258, 263Changing a fuse............................................ 265Changing a wheel.........................................251Changing a wiper blade........................136, 275Changing the date.................................339,372Changing the remotecontrol battery .............................................105Changing the time.................................339,372CHECK......................................................39, 57Checking levels .....................................237, 239Checking the engine oil level..........................54Checking tyre pressures(using the kit)..............................................246Checks..................................235, 236, 240,242Child lock.......................................................171Children..........................................166, 168-170Child seats ....................................162,165-167Cigar lighter...................................................r146Closing the boot ....................................102, 114Closing the doors .................................. 102,112Cold climate screen......................................275Connectors, audio.........................146, 359, 361Coolant level.................................................237Courtesy lamps.....................................129, 138Cruise control........................................221,224Cup holder.....................................................r147