2010.5 Citroen DS4 ESP

175Safety
Emergency braking assistance
System which, in an emergency, enables you to obtain the optimum braking pressure more quickly, thus reducing the stopping distance.
Activation
It is triggered by the speed at which the brake pedal is pressed. The effect of this is a reduction in the resistance of the pedal and an increase in braking efficiency.
When braking in an emergency, press firmly without releasing the pressure.
Trajectory control systems
Anti-skid regulation (ASR)
and electronic stability
programme (ESP)
The anti-skid regulation (also known as Traction Control) optimises traction to prevent skidding of the wheels, by acting on the brakes of the driving wheels and on the engine. The electronic stability programme acts on the brake of one or more wheels and on the engine to keep the vehicle on the trajectory required by the driver, within the limits of the laws of physics.
Activation
These systems are activated automatically each time the vehicle is star ted. They come into operation in the event of a grip or trajectory problem.
This is indicated by flashing of this warning lamp in the instrument panel.
Snow driving assistance
(Intelligent Traction Control)
Your vehicle has a system to help driving on snow: Intelligent Traction Control . This automatic system continuously checks for situations of difficult sur face adhesion that could make it difficult to move off or make progress on deep fresh snow or compacted snow. In these situations, Intelligent Traction Control takes over from the ASR system, limiting the amount of wheel slip to provide the best traction and trajectory control, even
without snow tyres and with or without chains. In extremely severe conditions (snow on top of ice, sand, deep mud…), it can be useful to
deactivate the ESP/ASR systems to allow a degree of wheel spin and so recover grip.

175Safety
Emergency braking assistance
System which, in an emergency, enables you to obtain the optimum braking pressure more quickly, thus reducing the stopping distance.
Activation
It is triggered by the speed at which the brake pedal is pressed. The effect of this is a reduction in the resistance of the pedal and an increase in braking efficiency.
When braking in an emergency, press firmly without releasing the pressure.
Trajectory control systems
Anti-skid regulation (ASR)
and electronic stability
programme (ESP)
The anti-skid regulation (also known as Traction Control) optimises traction to prevent skidding of the wheels, by acting on the brakes of the driving wheels and on the engine. The electronic stability programme acts on the brake of one or more wheels and on the engine to keep the vehicle on the trajectory required by the driver, within the limits of the laws of physics.
Activation
These systems are activated automatically each time the vehicle is star ted. They come into operation in the event of a grip or trajectory problem.
This is indicated by flashing of this warning lamp in the instrument panel.
Snow driving assistance
(Intelligent Traction Control)
Your vehicle has a system to help driving on snow: Intelligent Traction Control . This automatic system continuously checks for situations of difficult sur face adhesion that could make it difficult to move off or make progress on deep fresh snow or compacted snow. In these situations, Intelligent Traction Control takes over from the ASR system, limiting the amount of wheel slip to provide the best traction and trajectory control, even
without snow tyres and with or without chains. In extremely severe conditions (snow on top of ice, sand, deep mud…), it can be useful to
deactivate the ESP/ASR systems to allow a degree of wheel spin and so recover grip.

Deactivation
In exceptional conditions (star ting a vehicle which is bogged down, stuck in snow, on soft ground...), it may be advisable to deactivate the ASR and ESP systems, so that the wheels can
move freely and regain grip.  Press the "ESP OFF" button, located on the left below the steering wheel.
If this warning lamp comes on in the instrument panel and the indicator lamp in the button comes on, this indicates that the ASR and ESP systems are deactivated.
Reactivation
These systems are reactivated automatically each time the ignition is switched back on or from 30 mph (50 km/h).  Press the "ESP OFF" button again to
reactivate them manually.
Operating fault
The ESP/ASR systems offer exceptional safety in normal driving, but this should not encourage the driver to take extra risks or drive at high speed. The correct functioning of these systems is assured provided that manufacturer's recommendations are obser ved on: - wheels (tyres and rims), - braking components, - electronic components, - assembly and repair procedures. After an impact, have these systems checked by a CITROËN dealer or a qualified workshop.
If this warning lamp comes on, accompanied by an audible signal and a message in the screen, this
indicates a fault with these systems. Have it checked by a CITROËN dealer or a qualified workshop.

Rear seat belts
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.  On the outer seat belts, raise the bar to the top of the backrest to prevent the tongue
from knocking against the side trim.
The rear seats are each fitted with a three-point seat belt, with force limiter and, for the outer seats, an effor t limiter.
Seat belt not fastened/unfastened warning lamps display
1. Driver's seat belt not fastened/unfastened warning lamp. 2. Front passenger’s seat belt not fastened/unfastened warning lamp. The corresponding warning lamp 1 or 2 comes on in red on the seat belt and passenger’s front airbag warning lamps display, accompanied by an audible signal and a message in the multifunction screen, if the seat belt is not fastened or is unfastened.

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.

Lateral airbags
System which protects the driver and front passenger in the event of a serious side impact in order to limit the risk of injury to the chest, between the hip and the shoulder. Each lateral airbag is fitted in the seat backrest frame, door side.
Deployment Impact detection zones
A. Front impact zone. B. Side impact zone.
The lateral airbags are deployed unilaterally in the event of a serious side impact applied to all or par t of the side impact zone B , perpendicular to the longitudinal centreline of the vehicle on a horizontal plane and directed from the outside towards the inside of the vehicle. The lateral airbag inflates between the hip and
shoulder of the front occupant of the vehicle and the corresponding door trim panel.

185Safety
Curtain airbags
System which protects the driver and passengers (with the exception of the rear centre passenger) in the event of a serious side impact in order to limit the risk of injury to the side of the head. Each cur tain airbag is built into the pillars and the upper passenger compar tment area.
Deployment
The cur tain airbag is deployed at the same time as the corresponding lateral airbag in the event of a serious side impact applied to all or par t of the side impact zone B , perpendicular to the longitudinal centreline of the vehicle on a horizontal plane and directed from the outside towards the inside of the vehicle. The cur tain airbag inflates between the front or rear occupant of the vehicle and the windows.
Operating fault
In the event of a minor impact or bump on the side of the vehicle or if the vehicle rolls over, the airbag may not be deployed. In the event of a rear or front collision, the airbag is not deployed.
If this warning lamp comes on in the instrument panel, accompanied by an audible signal 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.

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.