2010.5 Citroen DS4 ignition

Safety
Seat belts
Front seat belts
The front seat belts are fitted with a pretensioning and force limiting system. This system improves safety in the front seats in the event of a front or side impact.
Depending on the severity of the impact, the pretensioning system instantly tightens the seat belts against the body of the occupants. The pretensioning seat belts are active when the ignition is on. The force limiter reduces the pressure of the seat belt on the chest of the occupant, so improving their protection.
Fastening
 Pull the strap, then inser t the tongue in the buckle.  Check that the seat belt is fastened
correctly by pulling the strap.
Unfastening
 Press the red button on the buckle.  Guide the seat belt as it reels in.
Seat belt not fastened/unfastened warning lamp
When the ignition is switched on, this warning lamp comes on in the instrument panel if the driver and/or the front passenger has not fastened their seat belt. From approximately 12 mph (20 km/h) this warning lamp flashes for two minutes accompanied by an audible signal of increasing volume. Once these two minutes have elapsed,
this warning lamp remains on until the driver and/or the front passenger fastens their seat belt.
Height adjustment
 To lower the attachment point, squeeze the control A and slide it downwards.  To raise the attachment point, slide the control A upwards.

Safety
Seat belt unfastened warning lamp
This warning lamp comes on in the instrument panel when one or more rear passengers unfasten their seat belt. From approximately 12 mph (20 km/h), this warning lamp flashes for two minutes accompanied by an audible signal of increasing volume. Once these two minutes have elapsed, this warning lamp remains on until the one or
more rear passengers fasten their seat belt.
Seat belt unfastened warning lamps display
3. Rear right seat belt warning lamp. 4. Rear centre seat belt warning lamp. 5. Rear left seat belt warning lamp. When the ignition is switched on, with the engine running or when the vehicle is moving at less than 12 mph (20 km/h), the corresponding warning
lamps 3 , 4 and 45 come on in red for approximately 30 seconds, if the seat belt is not fastened. When the vehicle is moving at more than 12 mph
(20 km/h), the corresponding warning lamps 3 , 4 and 5 come on in red, accompanied by an audible signal and a message in the screen, if a rear passenger has unfastened their seat belt.

181Safety
Airbags
System designed to maximise the safety of the occupants (with the exception of the rear centre passenger) in the event of violent collisions. It supplements the action of the force-limiting seat belts (with the exception of the rear centre passenger). If a collision occurs, the electronic detectors record and analyse the front and side impacts sustained in the impact detection zones: - in the case of a serious impact, the airbags are deployed instantly and protect the occupants of the vehicle (with the exception of the rear centre passenger); immediately after the impact, the airbags deflate rapidly so that they do not hinder visibility or the exit of the occupants, - in the case of a minor or rear impact or in cer tain roll-over conditions, the airbags will not be deployed; the seat belt alone is sufficient to provide optimum protection in
these situations.
The airbags do not operate when the ignition is switched off. This equipment will only deploy once. If a second impact occurs (during the same or a subsequent accident), the airbag will not be deployed again.
Impact detection zones
A. Front impact zone. B. Side impact zone.
Deployment of the airbag(s) is
accompanied by a slight emission of harmless smoke and a noise, due to the activation of the pyrotechnic car tridge incorporated in the system. This smoke is not harmful, but sensitive individuals may experience slight irritation. The noise of the detonation may result in a slight loss of hearing for a shor t time.

183Safety
Deactivation
Only the passenger's front airbag can be deactivated:  with the ignition off , inser t the key in the n offpassenger airbag deactivation switch,  turn it to the "OFF" position,  then, remove the key keeping the switch in the new position.
According to version, this warning lamp comes on either in the instrument panel or in the seat belt and passenger's front airbag warning lamps display when the ignition is on and until the airbag is reactivated.
To assure the safety of your child, the passenger's front airbag must be deactivated when you install a "rear facing" child seat on the front
passenger seat. Other wise, the child would risk being seriously injured or killed if the airbag were deployed.
Reactivation
When you remove the child seat, turn the switch to the "ON" position to reactivate the airbag and so assure the safety of your front passenger in the event of an impact.
With the ignition on, this warning
lamp comes on in the seat belt and passenger's front airbag warning lamps display for approximately one minute, if the passenger's front airbag is activated.
Operating fault
If this warning lamp flashes, contact a CITROËN dealer or a qualified workshop. The passenger’s front airbag may no longer be deployed in the event of a serious impact.
If even one of the two airbag warning
lamps comes on continuously, do not install a child seat on the front passenger seat. Have the system checked by a CITROËN dealer or a qualified workshop.
If this warning lamp comes on in the instrument panel, accompanied by an audible warning and a message in the screen, contact a CITROËN dealer or a qualified workshop to have the system checked. The airbags may no longer be deployed in the event of a serious impact.

181Safety
Airbags
System designed to maximise the safety of the occupants (with the exception of the rear centre passenger) in the event of violent collisions. It supplements the action of the force-limiting seat belts (with the exception of the rear centre passenger). If a collision occurs, the electronic detectors record and analyse the front and side impacts sustained in the impact detection zones: - in the case of a serious impact, the airbags are deployed instantly and protect the occupants of the vehicle (with the exception of the rear centre passenger); immediately after the impact, the airbags deflate rapidly so that they do not hinder visibility or the exit of the occupants, - in the case of a minor or rear impact or in cer tain roll-over conditions, the airbags will not be deployed; the seat belt alone is sufficient to provide optimum protection in
these situations.
The airbags do not operate when the ignition is switched off. This equipment will only deploy once. If a second impact occurs (during the same or a subsequent accident), the airbag will not be deployed again.
Impact detection zones
A. Front impact zone. B. Side impact zone.
Deployment of the airbag(s) is
accompanied by a slight emission of harmless smoke and a noise, due to the activation of the pyrotechnic car tridge incorporated in the system. This smoke is not harmful, but sensitive individuals may experience slight irritation. The noise of the detonation may result in a slight loss of hearing for a shor t time.

191Driving
With the ignition on or the engine running, to release the parking brake, press on the brake pedal or the accelerator, pull then release control A .
Manual release
Before leaving the vehicle, check that parking brake warning lamp in the instrument panel is on fixed, not flashing.
Manual application
With the vehicle stationary, to apply the parking brake whether the engine is running or off, pullcontrol lever A .
The application of the parking brake is confirmed by:
- illumination of the braking warning lamp and of the P warning lamp in the control lever A ,
- display of the message "Handbrake on".
When the driver’s door is opened with the engine running, a message is displayed accompanied by an audible signal if the parking brake has not been applied.
The full application of the parking brake is confirmed by:
- the braking warning lamp and the P warning lamp in the control lever A going off,
- display of the message "Handbrake off ".
If you pull control lever A without pressing the brake pedal, the parking brake will not be released and a warning lamp will come on in the instrument panel.
Maximum application
If necessary, you can make a maximum application of the parking brake. This is obtained by means of a long pull on the control lever A , until you see the message "Handbrake on maximum" and a beep is heard. Maximum application is essential: - in the case of a vehicle towing a caravan or a trailer, if the automatic functions are activated but you are applying the parking brake manually, - when the gradient you are parked on may vary (e.g. on a ferry, on a lorry, during towing),
In the case of towing, a loaded vehicle or parking on a gradient, make a maximum application of the parking brake then turn the front wheels towards the pavement and engage a gear when you park. After a maximum application, the release time will be longer.

With the vehicle stationary, the parking brake is automatically applied when the engine is switched off.
Automatic application,
engine off
In the case of towing, a loaded vehicle or parking on a gradient, turn the front wheels towards the pavement and engage a gear when you park.
Before leaving the vehicle, check that parking brake warning lamp in the instrument panel is on fixed (not flashing). Never leave a child alone inside the vehicle with the ignition on, as they could release the parking brake.
- illumination of the braking warning lamp and of the P warning lamp in the control lever A ,
- display of the message "Handbrake on".
The application of the parking brake is confirmed by:
Automatic release
The electric parking brake releases automatically and progressively when you press the accelerator:  Manual gearbox: press down fully on the clutch pedal, engage first gear or reverse, press on the accelerator pedal and move off.  6-speed electronic gearbox system:select position A , M or R then press on the accelerator pedal.
When stationary, with the engine running, do not press the accelerator pedal unnecessarily, as you may release the parking brake.
Full release of the parking brake is confirmed by: - the braking warning lamp and the P warning lamp in the control lever A going off,
- display of the message "Handbrake off ".

193Driving
With the engine running and the vehicle stationary, in order to immobilise the vehicle it is essential to manually apply the parking
brake by pulling control lever A .
Immobilising the vehicle,
engine running
The emergency braking must only be used in exceptional circumstances.
Before leaving the vehicle, check that parking brake warning lamp in the instrument panel is on fixed, not flashing.
The application of the parking brake is confirmed by:
- illumination of the braking warning lamp and the P warning lamp in the control lever A ,
- display of the message "Handbrake on".
When the driver’s door is opened, a message is displayed accompanied by an audible signal, if the parking brake has not been applied.
Particular situations
In cer tain situations (e.g. star ting the engine), the parking brake can automatically alter its force. This is normal operation.
To advance your vehicle a few centimetres without star ting the engine, but with the ignition on, press on the brake pedal and release the parking brake by pulling then releasing the control lever A . The full release of the parking brake is confirmed by the warning lamps in the control lever A and in the instrument panel going off and display of the message "Handbrake off ". If the parking brake develops a fault while applied or if the battery runs flat, an emergency release is always possible.
Emergency braking
If a failure of the ESP system is signalled by the illumination of this warning lamp, then braking stability is not guaranteed. In this event, stability must be assured by the driver by repeating alternate "pull-release" actions on the control lever A .
In the event of a failure of the main ser vice brake or in an exceptional situation (e.g. driver taken ill, under instruction, etc) a continuous
pull on the control lever A will stop the vehicle. The electronic stability programme (ESP) provides stability during emergency braking. If the emergency braking malfunctions, the message "Parking brake faulty" will be displayed.