2008 Citroen C4 Owner's Manual

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Braking systemYour vehicle’s most important safety feature, the braking system, is pro-vided by brake discs (or discs and drums) and a dual hydraulic circuit.
When the engine is running, power assistance is provided so that pedal effort is reduced.
On wet roads, or after washing the vehicle, there can be a slight delay in brake response. From time to time, apply the brakes briefl y so that the heat generated can dispel any moisture.

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SAFETY RECOMMENDATIONS
The ESP system offers increased driving safety but is not in place to encourage the driver to take addi-tional risks or to drive at excessive speeds.
The functioning of this system is sub-ject to compliance with the manufac-turer’s recommendations on wheels (tyres and rims), brake parts and elec-tronic components, as well as with CITROËN’s assembly and repair pro-tronic components, as well as with tronic components, as well as with
cedures.
After any collision, have this system checked by a CITROËN dealer.After any collision, have this system After any collision, have this system
Electronic Stability Programme (ESP) and Traction Control (ASR)
These systems are closely con-nected to the ABS and additional to it. Where a difference is detected between the trajectory followed by the vehicle and that wanted by the driver, the ESP system acts au-tomatically on the brake of one or more wheels to return the vehicle to the trajectory wanted, within the lim-its of the laws of physics. The ASR system optimises traction and pre-vents wheel spin by acting on the brakes of the driving wheels. It also improves steering stability during acceleration.
ELECTRONIC STABILITY PROGRAMMESDeactivation
In exceptional conditions (vehicle stuck in snow, soft ground, etc.) it may prove useful to deactivate the ESP/ASR system to allow the wheels to spin and thus regain traction.
Press on control A, the ESP/ASRwarning lamp and the control light up. The ESP/ASR systems are no longer active.
The ESP/ASR systems will activate again:
- Automatically after the ignition has been switched off.
- Automatically when you drive at above approx. 30 mph.
- Manually with another press on control A.
Operational anomaly
If there is a system malfunction, the ESP/ASR warning lamp comes on. Contact CITROËN to have the sys- warning lamp comes on. warning lamp comes on.
tem checked.Operation
When either the ESP or ASR sys-tem is brought into operation, the ESP/ASR warning lamp fl ashes.

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Holding the seat belt (3-door model)
Raise then lock part A, to retain the seat belt buckle when it is unfas-tened.
It is necessary to remove the seat belt from the buckle retainer before moving the seat to access the rear seat positions.
As a safety measure, these operations should only be done at standstill.
Seat belt height adjustment (5-door model)
The correct positioning for the seat belt anchorage is mid-shoulder height.
To adjust it, pinch the control and slide it in the desired direction.
SEAT BELTS

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Legislation makes it compulsory for all the vehicle's occupants to wear seat belts, including pregnant women and however short the journey.
Inside the cabin, the seat belt is the most important protection for pas-sengers.
A warning lamp informs you if the driver's and/or front/rear passen-gers' seat belts are not fastened, when the ignition is switched on.
In the event of a collision or on emer-gency braking, the seat belt will hold you in your seat, preventing you from being thrown from the vehicle.
Pyrotechnically pretensioned seat belts with force-limiters
In the event of a collision:
The pretensioners pull back the front seat belts. The occupants are thus held more fi rmly against their seats.
The force limiters reduce the pres-sure of the seat belt against the occupant’s chest, thus enhancing the protection that the seat belt provides.

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Fastening
Pull the belt down in front of you in a steady movement, making sure that it does not become twisted.
Press the fastening into its buckle.
Check that the seat belt has fas-tened correctly and that the auto-matic reel lock is working correctly by pulling the strap.
The abdominal part of the strap should be positioned as low down as possible in the lap and as tight as possible.
The chest part should be positioned if possible in the channel of the shoulder.
Each belt has a reel that adjusts its length automatically to the girth of the seat occupant.
Positioning of the belt recommended for pregnant women
Position the lower part of the belt as low down as possible on the lap, so that it exerts no pressure on the abdomen.
Always adjust your seat belt while the vehicle is stationary.
The driver must ensure that all the passengers have correctly fastened their seat belts.
Do not pass the belt over hard or breakable objects that yo u may have in your pockets.
Never use clamps or clips to loosen your seat belt.NeverNever
Never carry a child on your knee. Never Never
Regularly check the condition and cleanliness of the seat belts. See "Maintenance".
Have the seat belts checked periodically by a CITROËN deale r as well as after any accident, even a minor one.

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AIRBAGS
Replacement of the pyro-technic systems associa-ted with the airbags
After the airbags have been deployed, the pyrotechnic sys-tems have to be changed in strict compliance with the manufac-turer's specifi cations.
Your vehicle may have:
A driver’s airbag located in the Asteering wheel, under the central cover.
A passenger's airbag in the dash-Aboard.
Two side airbags located in the backrests of the driver’s seat and front passenger’s seat (door side).Two curtain airbags located on the interior edges of the roof.The control unit for the airbags and sensors analyses any frontal and lateral impacts suffered in the colli-sion detection zones (see illustration p 91).

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Area of side impact
Area of side impact
Area of frontal impact
Side airbags and curtain airbags
Deployment of these airbags requires a violent lateral impact applied on all or part of one of the lateral collision zones, coming in a horizontal plane from the side.
The role of the side airbag is to place itself between the occupant (driver or front passenger) and the door panel, thus limiting the risk of injuries to the chest.
Front airbags and knees airbags
For these airbags to deploy, it requires a violent frontal impact applied on all or part of the frontal impact zone (see illustration) from forward of the vehicle in a horizontal plane.
The airbag interposes itself between the vehicle's front occupant and the dashboard to cushion the person from being thrown forward. The air-bag thus limits the risk of trauma to the head and chest. For the driver, the knees airbag protects the knees.
The front passenger’s airbag can be deactivated. see "Passenger's air-bag deactivation".
Examples of impact detection zones
The role of the curtain airbag is to place itself between the front or rear occupant and the windows, thus limiting the risk of injuries to the head.
These airbags may not deploy if there is only a slight collision on the side of the vehicle, or if the vehicle rolls over. They will not deploy for a front or rear collision.

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To reactivate the front passenger’s airbag
Don’t forget to reactivate the airbag function for a passenger or a forward facing child seat.
To do that, with ignition switched off:
- Insert and turn the key to the "ON"position, the airbag is activated.
The warning lamp in the instrument panel comes on for a few seconds when you switch the ignition on.
The front passenger’s airbag can be deactivated.Passenger’s airbag deactivation
In order to be able to use a "rear-fac-ing" child seat in the front passenger position, it is essential to deactivate the passenger airbag.
To do that :
- With the ignition off, insert the key into the switch A, located in the glovebox.
- Turn the key to position "OFF". The passenger’s airbag is deacti-vated.
The front passenger airbag deac-tivation warning lamp in the instru-ment panel lights up (ignition on).
If there is a malfunction, the "airbag fault" warning lamp comes on.
In the front passenger’s seat position, it is essential to deac-tivate the front passenger’s air-bag whenever a "rear-facing" child seat is installed there.
Otherwise the child risks being killed or seriously injured should the airbag deploy.