check engine Citroen C4 2008 1.G Owner's Manual

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D A S H B O A R D
Display lighting rheostat
On opening the driver’s door or unlocking with the remote control, for approximately 30 seconds the instrument panel is activated, dis-playing the mileage recorders and if applicable, the maintenance indica-tor spanner.
Central display
Display of warning lampsTrip mileage recorder reset button
Display of alerts and Status of functions
Display of warning lamps
INSTRUMENT PANEL
5 Trip mileage recorder
6 Fuel gauge
7 Engine oil level check
8 Coolant temperature
1 Rev counter
2 Cruise control or speed limiter settings
3 Speedometer
4 Maintenance indicator on switching on, then mileage recorder

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D A S H B O A R D
When the ignition is switched on, the oil level indicator is displayed for se-veral seconds.This display indicates normal ope-rating.
A fl ashing of "OIL" indicates an oil level that is below the minimum.
Check using the manual dipstick.
Check the oil level with the vehicle on horizontal ground, the engine ha-ving been switched off for at least 15 minutes.
A fl ashing of "OIL --" indicates a malfunction of the indicator.
Consult your CITROËN dealer.
ENGINE OIL LEVEL
INDICATOR
The rheostat is active if the sidelamps are on and applies to:
- the instrument panel
- the displays
The desired brightness is selected via control A or by pressing control AB.
With control B, press until the bri-ghtness is at maximum. Release, press until you reach minimum.
DASHBOARD LIGHTING RHEOSTAT

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III
C O M F O R T
Air conditioning
At any time of year, the air condition-
ing is useful for removing air humidity
and misting.
To keep the air conditioning com-
pressor well sealed, it is essential to
operate the air conditioning at least
once in every month.
To be effective, the air conditioning
should only be used with the win-
dows closed.
If you are towing a heavy trailer or if
outside temperatures are very high,
the air conditioning may be tempo-
rarily interrupted in favour of engine
cooling.
Sensor
The automatic air conditioning inside the passenger compartment makes use of the sunlight sensor, which is located on the dashboard behind the instrument panel.
Take care not to obstruct it.
Water arising from condensation in
the air conditioning is allowed to drain
out through an aperture provided for
this purpose; a pool of water may
thus form beneath the vehicle when
stationary.
You are recommended to have the
air conditioning system checked on
a regular basis (see Maintenance
Guide).
The air conditioning uses energy
from the engine to operate. This re-
sults in extra fuel consumption

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IX
D R I V I N G
Neutral
If the vehicle is moving, do not select this position, even momentarily.
Reverse gear
Only engage reverse gear when the vehicle is stationary.
If the vehicle is moving at a very low speed, if reverse gear is requested (position R) this will be taken into account only when the vehicle comes to a halt.
The "foot on brake" warning lamp may fl ash in the instrument panel to remind you to brake.
If the vehicle is moving at a high speed, if reverse gear is requested the warning lamp "N" will fl ash and your vehicle will go automatically into neutral. To re-engage a gear, you have only to return the gear lever to position A or M.
A sound signal indicates when reverse gear is engaged.
If parking assistance is deactivated, the sound signal for reverse gear engaged is absent.
The engine can only be started if the brake pedal is pressed and the gear lever is in position N.
The warning lamp "foot on brake" fl ashes on the display.
With the engine running, before accelerating away check the position engaged by looking at the lever grille or the rev counter : R, A or M.
If you are stationary with the engine running, take care to leave your gear selector in position N.
Sport option
Activation
Press on button S, situated on the lever grille.
The warning lamp "S" displays on the rev counter.
This option can be activated either in automatic mode or in manual mode.
Deactivation
Press again again on button S on the lever grille.
The warning lamp "S" disappears on the rev counter.
Note: the Sport option is deactivated whenever you switch off the ignition.
Automatic mode
Manual mode
- Push the lever to change to a higher gear.
- Pull the lever to change to a lower gear.

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X
M A I N T E N A N C E
Air fi lter
Follow the recommendations in the Maintenance Guide.
When working under the bonnet, when the engine is hot (even stopped and the ignition switched off), the cooling fan coul d operate at any time.
Check the engine oil level frequently between routine service visits, as well as prior to long journeys.
Engine coolant
The coolant level should be between the MAX and MINmarks on the header tank.
If the engine is hot, wait 15 minutes.
Quality: See "Maintenance Guide"
Never work on the cooling system if the engine is hot.
12 volt battery
See "Practical advice".
Engine oil
Check the oil level with the vehicle parked on level ground, after the engine has been switched off for at least fi fteen minutes.
Quality: See "Maintenance Guide"
Brake fl uid
The fl uid level must be situated within the MAX and MIN marks visible on the reservoir.
The screenwash fl uid should be replaced periodically as it loses its effectiveness over time.
Quality: See "Maintenance Guide"
If the warning lamp comes on while you are driving, stop immediately and contact the CITROËN network.you are driving, stop immediately stop immediately
Dust fi lter/odour fi lter (active carbon)
See "Maintenance Guide"
Take out the oil dipstick.
The level must be between the MAX and MIN marks on the dipstick
It should never exceed the maximum mark.
Windscreen, rear screen and headlamp washer fl uid
It is recommended that you use products approved by CITROËN.It is recommended that you hat you
Screenwash fl uid reservoir: 3.5 litres.
Screen and headlamp wash reservoir: 6.5 litres.
Specifi cation for the fl uid
To ensure optimum cleaning and to avoid freezing, topping up or fi lling of the reservoir must not be done with just water.
MAX
MIN
LEVELS

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M A I N T E N A N C E
Radiator - coolant
The coolant must only be checked or topped up if the power unit is cold.
Engine hot
As the cooling system is pressurised, wait for at least one hour after switching off the engine before intervening.
To avoid the risk of scalding, slacken the cap two turns to allow the pressure to escape. Once the pressure has fallen, remove the cap and top up the level.
Adding engine oil
Remove the dipstick before topping up. Check the level after fi lling.
It should never exceed the maximum mark.
Screw on the cap before closing the bonnet.
Quality: See "Maintenance Guide".
Topping up the cooling system
The coolant level should be between the MAX and MINmarks on the header tank.
Top up the level. If you have to add more than 1 litre, you should have the cooling system checked by CITROËN.the cooling the cooling
Make sure that the cap is on correctly
Note: The necessity to top up frequently would indicate a malfunction that should be checked at the earliest opportunity.
Note: On vehicles equipped with a particle fi lter, the cooling fan may operate for some ten minutes after the engine has stopped.
LEVELS

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M A I N T E N A N C E
Windscreen and rear screen washer fl uid
For best results as well as for your safety, use only CITROËN approved products which protect at temperatures as low as -25 °C to -30 °C.
It is essential to have suffi cient screen wash fl uid if your vehicle is equipped with Xenon headlamps.
To check the level, place a fi nger on aperture A before removing the cap.
Capacity: 3.5 litres.
Capacity with headlamp washers: 6.5 litres.
Brake fl uid
The synthetic fl uid not only gives protection against corrosion but also ensures correct functioning of the braking system in all environmental conditions, therefore you should only use the synthetic product recommended by the CITROËN only use the synthetic product product
network. (this fl uid must be replaced every two years).
These important requirements are detailed in your vehicle’s Maintenance Guide.
Quality: See "Maintenance Guide".
When working under the bonnet, when the engine is hot (even stopped and the ignition switched off), the cooling fan coul d operate at any time.
Brake fl uid reservoir
Check and top up at regular intervals.
The fl uid level must be situated within the max and min marks visible on the reservoir.
If the warning lamp comes on when driving, stop as quickly as possible and contact a CITROËN dealer.driving, stop as quickly as possible quickly

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Protection cover
HDi 135 and 140 engines
Remove the protection cover by fi rst unclipping point 1, then 3 and4. Detach point 2 by pulling towards you, then lift.
To reposition the protection cover, attach point 2 fi rst. Lower the cover, keeping it centred. Clip points 1 and4, pushing vertically and slightly rearwards. Clip point 3 pushing down vertically.
HDi engines are of a highly technical nature.
All maintenance and repairs require specifi c qualifi cations which only your CITROËN Dealer can guarantee.All maintenance and repairs require specifi c qualifi cations All maintenance and repairs require specifi c qualifi cations
Bleeding of water from the diesel fuel fi lter
To be bled on a regular basis (at every oil change).
To evacuate the water, slacken the bleed screw or the water in diesel fuel sensor, which is located at the base of the fi lter, until water ceases to fl ow out.
Then retighten the bleed screw or the water in diesel fuel sensor.
DIESEL INJECTION EQUIPMENTWear of brake discs, brake pads and brake drums
The rate of wear of the brake pads depends on the use of your vehicle (urban use, frequent stops), and on your style of driving or the type of journey.
For information on checking the discs and drums for wear, contact a CITROËN dealer.
After washing the vehicle, brake progressively to dry out the brake linings.

122
X
M A I N T E N A N C E
Protection cover
HDi 135 and 140 engines
Remove the protection cover by fi rst unclipping point 1, then 3 and4. Detach point 2 by pulling towards you, then lift.
To reposition the protection cover, attach point 2 fi rst. Lower the cover, keeping it centred. Clip points 1 and4, pushing vertically and slightly rearwards. Clip point 3 pushing down vertically.
HDi engines are of a highly technical nature.
All maintenance and repairs require specifi c qualifi cations which only your CITROËN Dealer can guarantee.All maintenance and repairs require specifi c qualifi cations All maintenance and repairs require specifi c qualifi cations
Bleeding of water from the diesel fuel fi lter
To be bled on a regular basis (at every oil change).
To evacuate the water, slacken the bleed screw or the water in diesel fuel sensor, which is located at the base of the fi lter, until water ceases to fl ow out.
Then retighten the bleed screw or the water in diesel fuel sensor.
DIESEL INJECTION EQUIPMENTWear of brake discs, brake pads and brake drums
The rate of wear of the brake pads depends on the use of your vehicle (urban use, frequent stops), and on your style of driving or the type of journey.
For information on checking the discs and drums for wear, contact a CITROËN dealer.
After washing the vehicle, brake progressively to dry out the brake linings.

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A U D I O
QUESTIONANSWERSOLUTION
The pre-set stations do not work (no sound, 87.5 Mhz is displayed, etc.).
The waveband selected is not the correct one.Press on the button BAND AST to retrieve the wave band (AM, FM1, FM2, FMAST) where the stations have been memorised.
Traffi c Announcements (TA) is displayed, but I do not receive any road information.
The particular radio station is not in the regional traffi c information network.Change to a radio station which does broadcast traffi c information.
The reception quality of the radio station being listened to gradually deteriorates or the pre-set stations do not work (no sound, 87.5 Mhz displayed, etc.).
The vehicle is too distant from the transmitter of the station being listened to, or no transmitter is present in the geographical area you are passing through.
Activate the RDS function to allow the system to check whether a more powerful transmitter is to be found in the geographical area.
The environment (hills, high buildings, tunnels, underground 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.Have the aerial checked by a Have the aerial checked by a
Cutting of sound for 1 or 2 seconds in radio mode.
The RDS system during this brief sound cut-off is searching for a better frequency that might offer improved reception of the station.
Deactivate the RDS function if the phenomenon occurs too frequently and always on the same journey.
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 vehicle n the engine is switched off, the working n the engine is switched of
battery charge.
The interruption is normal: the radio goes into economy mode, cutting off in order to save the erruption is normal: the radio goes into erruption is normal: the radio goes into
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.