engine Citroen C6 2008 1.G User Guide

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A U T O M A T I C A I R C O N D I T I O N I N G
AIR CONDITIONING
This system automatically adjusts the temperature, the fl ow of air and the distribution of air inside the cabin, depending on your desired comfort level.
Provided you retain automatic mode (by pressing button "AUTO") and all the air vents are open, you will main-tain an optimum comfort level, also removing humidity and misting, whatever the ambient climatic conditions.
The temperature inside the cabin cannot be lower than the temperature outside if the air conditioning is not operating.
To be effective, the air conditioning should only be used with the windows closed. If after a lengthy stop in bright sunlight the interior temperature is excessive, air the passenger compartment by opening the windows for a few moments, then close them again.
To keep the air conditioning compressor well sealed, it is essential to operate the air conditioning at least once in every month.
The air conditioning operates by using power from the engine. This results in a slight increase in fuel con-sumption.
Sensors
The automatic regulation of the air conditioning inside the cabin makes use of a number of sensors, relieving you of the need to make adjustments, other than the desired cabin temperature.
Take care not to obstruct sensor A.
Air inlet
Check that the exterior grille for the air inlet, at the bot-tom of the windscreen, is clean and free of dead leaves, snow, etc.
If washing the vehicle with a high pressure jet, avoid targeting the air inlet zone.
Air circulation
For your comfort we advise you to maintain a proper distribution of air within the cabin, both at the front and at the rear.
The air vents to the face have thumbwheels so that you can adjust the fl ow of air, and grilles to orient the direction.
There are air vents on the fl oor underneath the front seats and on the rear control panel, for enhanced heat-ing of the rear seat positions.
Do not obstruct the air outlets located in the boot area.
Dust/pollen fi lter
There is a fi lter for excluding pollen and dust.
This fi lter has to be changed according to the vehicle maintenance schedule. See "Maintenance Guide".

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A U T O M A T I C A I R C O N D I T I O N I N G
Remarks:When starting from cold, in order to prevent unwanted cold air, the air fl ow will increase only gradually to its optimum level.
If you enter the vehicle after a fairly prolonged stop and the temperature inside the vehicle is far from comfortable, it serves no purpose to modify the temperature that is displayed as an attempt to go immediately to the desired comfort level. The system automatically uses all of its power to compensate the temperature gap as quickly as possible.
Remarks:Water arising from the condensation in the air conditioning drains out through a hole provided for this purpose ; a pool of water may thus form underneath the vehicle when stationary.
Whatever the time of year, even in cool weather the air conditioning is useful in removing humidity and misting.You are advised to have the air conditioning system checked on a regular basis. See "Maintenance Guide".
If you are towing a heavy trailer and outside temperatures are high, the air conditioning may be temporarily paused if the engine cooling requires this.

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A U T O M A T I C A I R C O N D I T I O N I N G
5. FRONT DEMISTING - DEICING
Press button 5 for rapid clear windows. The warning lamp comes on. This system controls the air condi-tioning, the air fl ow and the entry of air from outside. It sends the ventilation towards the windscreen and side windows.
A press on the 1 button returns you to "AUTO" mode.
6. REAR DEMISTING - DEICING
Press button 6, with the engine running, to start a rapid deicing or demisting of the rear screen and rear view mirrors. The warning lamp comes on.
This mode stops automatically as a function of the out-side temperature. It can be paused by pressing again on button 6 or by stopping the engine.
In the latter case, demisting will resume when the engine is switched on again.Note: The heated rear screen operates independently of the automatic air conditioning.
7. AIR RECIRCULATION – ENTRY OF AIR FROM OUTSIDE
Press repeatedly on button 7 to select the air entry mode. The corresponding warning lamp lights up:Air intake in automatic pollution control mode (on by default, with automatic comfort regulation).
The automatic mode makes use of an air quality sen-sor. It analyses the air and isolates the cabin from the exterior if the presence of pollutants is detected. In this case it automatically activates recirculation of the cabin air.
Please note: this function does not detect and there-fore protect the cabin from unpleasant odours. It is not active when the ambient temperature is below + 5 °C so as to avoid the risk of misting the vehicle’s windows.
Closing the exterior air intake
Press button 7 to close the intake of air from the exte-rior.
While maintaining the other settings, this position allows the driver to avoid unpleasant odours and smoke out-side the vehicle at any time.
It should be cancelled as soon as possible to allow exchange of the cabin air and to avoid misting of the vehicle’s windows.
Exterior air intake
Press button 7 once to open the exterior air intake.

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The programmable heating sys-tem operates independently of the engine.
With the engine off, it is used to preheat the engine cooling system so as to have an optimum engine operating temperature on starting.
The programmable heating sys-tem is started using a long-range remote control. It can be started immediately or programmed to start later.
In the event of a malfunction of the programmable heating sys-tem, contact a CITROËN dealer.the programmable heating sys-programmable heating
Remote control
The remote control for the program-mable heating system includes the following buttons and display infor-mation:1. Menu function scroll buttons.2. Function symbols: clock, temperature, operating duration, programmed time, heater operation, heater control.3. Digital display of: time, temperature, operating duration, programmed time or heating level.4. Off button.5. On button.
Information displayed in the remote control screen
Display of functions
Press buttons 1 repeatedly to bring up the functions.
The fi rst press of the right or left button displays the time.
The left button then gives access to the programming time, then the heating level (C1 to C5).
The right button gives access to the cabin temperature, then the operating duration of the heater where the system is to be started immediately.
Information on the cabin tem-perature is only available with the engine off.
P R O G R A M M A B L E H E A T I N G

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G R O U N D C L E A R A N C E A D J U S T M E N T
Position changes may only be made when the engine is running.
The ground clearance is adjusted automatically. You can however modify the vehicle height in certain specifi c cases.
To change the position
Press once on one of the adjustment controls. The change of position is indicated at the start of the adjust-ment by:A message or
Temporary display of the initial position with the symbol for the position requested.Note: You are recommended to avoid any changing of position while you have your foot on the brake.
Viewing of the position of the vehicle
On completion of the adjustmentyou see either a message or an illustration of the position attained by the vehicle, with the appropriate symbol.

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F R E Q U E N T L Y - A S K E D Q U E S T I O N S
QUESTIONANSWERSOLUTION
Tr a f f i c A n n o u n c e m e n t s ( TA ) i s d i s p l aye d. I d o n o t r e c e i ve any traf fi c information or public announcements.
The particular radio station is not in the regional t raffi c information network.Change to a radio station that does broadcast traffi c information.
The reception quality of the radio station being listened to gradually deteriorates.
The vehicle is too distant from the transmitter, or no transmitter is present in the geographical area you a re passing through.
Activate the RDS function to allow the system to check whether a more power ful transmitter is to be found in the geographical area.
The environment (hills, high buildings, tunnels, under-ground car parks, etc.) is blocking reception, even in RDS mode.
This phenomenon is normal and does not imply anything wrong with the radio.
The aerial is absent or has been damaged (for example after going through a car wash or in an underground car park).Have the aerial checked by a CITROËN dealer.
When the engine is not running, the radio stops after a few minutes.
When the engine is switched off, the working time for the radio depends on the battery charge. The interruption is normal.: the radio goes into economy mode, cutting of f in order to save the vehicle’s battery.
You have to start the engine so as to increase the battery charge.
The message "the audio system is overheating" appears on the screen.
In order to protect the audio equipment in excessive ambient temperatures, the radio goes into an automatic thermic protection mode which results in a reduction in sound volume or stopping of the CD player.
Switch off the audio system for a few minutes in order to allow the system to cool down.

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L E V E L S
Air fi lter
Follow the requirements set out in the Maintenance Guide.
REFER TO THE CHAPTER: USER PRECAUTIONS.
Screen wash and headlamp wash fl uid
Use CITROËN-approved products wherever possible.
Capacity: See "Capacities".
Engine coolant
The fl uid level should be between the marks MIN. and MAX. on the header tank.
Engine hot, wait at least 15 minutes.
Quality: See "Maintenance Guide".
Never do anything relating to the cooling system of an engine that is hot.
Poles "+" and "-" for starting with a slave battery
See "Starting with a slave battery".
Engine oil
Check the engine oil level on horizontal ground with the engine having been switched off for at least 15 minutes.
Quality: See "Maintenance Guide".
Pull out the manual dip-stick.
The level should be between the marks MIN.and MAX. on the gauge.
It must never exceed the maximum.
MAX.
MIN.
Brake fl uid
The level of fl uid should be between the marks MIN.and MAX. on the reservoir.
Quality: See "Maintenance Guide".
If the warning lamp comes on while you are driving, stop immediately and contact a CITROËN dealer.immediately and immediately
Power steering and suspension oil
For topping up, it is neces-sary to go to a CITROËN For topping up, it is neces-neces-
dealer.
Quality: See "Maintenance Guide".
If opening the bonnet when the engine is hot, even if it is stopped and the ignition is switched off, remember that the cooling fan may operate at any moment.
Between routine servicing visits, check the level of engine oil frequently as well as before going on a long journey.

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TOPPING UP ENGINE OIL
Before fi lling, pull out the dipstick.
Check the dipstick after fi lling.
It must never exceed the maxi-mum.
Screw the cap back on and close the bonnet.
Quality: See "Maintenance Guide".
L E V E L S
RADIATOR – COOLANT FLUID
Checking the level and topping up with fl uid must always be done with the engine cold.
Engine hot
Wait 15 minutes or for the tem-perature to be lower than 100 °C and then carefully unscrew the cap so as to allow the pressure to drop, protecting yourself with, say, a cloth.
Topping up the coolant
The level of coolant 1 should be between the MIN. and MAX. mark-ings on the header tank.
Top up the level. If you have to put in more than 1 litre, have the cooling system checked by a CITROËN dealer.cooling system checked cooling system
Make sure that the cap is back on properly.Note: If you need to top up the fl uid frequently, this indicates a malfunction which you should get checked at the earliest opportu-nity.
Remark: The cooling fan may operate for around 10 minutes after the engine has stopped.
Quality: See "Maintenance Guide".
If opening the bonnet when the engine is hot, even if it is stopped and the ignition is switched off, remember that the cooling fan may operate at any moment.

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H D i E N G I N E S
HDi engines are the result of advanced technology.
Any intervention requires special qualifi cations which only a CITROËN dealer can guarantee.Any intervention requires special qualifi cations which only a Any intervention requires special qualifi cations which only a
The diesel fuel circuit being under high pressure:
ANY INTERVENTION ON THE CIRCUIT IS PROHIBITED.
2.2 HDi 16V engineV6 Hdi engine

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STARTING THE ENGINE AFTER DISCONNECTING AND RECONNECTING THE BATTERY1. Turn the ignition key.2. Wait approximately 1 minute before operating the starter in order to allow the electronic systems to re-initialise.
After the battery has been disconnected for a lengthy period o f time, it may be necessary to re-initialise the following functions:The anti-pinch on the windows.
The anti-pinch on the sun roof.
The multifunction display parameters (date, time, language, units of distance and of temperature).The Radio stations.
The NaviDrive. See NaviDrive instructions.
IMPORTANT
In the event of a battery failure, and if the boot is closed, it is then necessary to feed an electrical supply to your vehicle. See following page.