2010.5 Citroen DS4 Owner's Manual

209Driving
Blind spot sensors
This driving assistance system warns the driver of the presence of another vehicle in the blind spot angle of their vehicle, as soon as this presents a potential danger.
Operation
This system is designed to improve safety when driving and is in no circumstances a substitute for the use of the interior rear view mirror and door mirrors. It is the driver's responsibility to constantly check the traffic, to ass es the distances and relative speeds of other vehicles and to predict their movements before de ciding whether to change lane. The blind spot sensor system can never replace the vigilance and responsibility of the driver.
 On switching on the ignition, or engine running, press this button to activate the function; the warning lamp comes on.
Sensors fitted in the front and rear bumpers monitor obscured zones in the driver's field of vision.
A warning lamp appears in the door mirror on the side in question: - immediately, when being over taken, - after a delay of one second, when over taking another vehicle too slowly.

No aler t will be given in the following situations: - in the presence of stationary objects (parked vehicles, barriers, street lamps,
road signs...), - with vehicles moving in the opposite direction, - driving on a sinuous road or a sharp corner,
The aler t is given by a warning lamp which comes on in the door mirror on the side in question as soon as a vehicle - car, lorry, cycle - is detected and the following conditions are fulfilled: - all the vehicles must be moving in the same direction, - the speed of your vehicle is between 6 and 75 mph (10 and 140 km/h), - the difference in speed between your vehicle and the other vehicles must be less than 9 mph (15 km/h), - the traffic must be flowing normally, - in the case of an over taking manoeuvre, if this is prolonged and the vehicle being over taken remains in the blind spot, - you are driving on a straight or lightly cur ved road, - your vehicle is not pulling a trailer, a
caravan...
- when over taking (or being over taken by) a very long vehicle (lorry, coach...) which is at the same time detected at the rear in the
blind spot angle and present in the driver's for ward field of vision, - in very heavy traffic: vehicles detected in front and behind are confused with a lorry or a stationary object, - when over taking quickly.

211Driving
Operating fault
In the event of a fault, the warning lamp in the button flashes then goes off. Have it checked by a CITROËN dealer or a qualified workshop.
The system may suffer temporary inter ference in cer tain weather conditions (rain, hail...). In par ticular, driving on a wet sur face or moving from a dry area to a wet area can cause false aler ts (the presence of a fog of water droplets in the blind spot angle is interpreted as a vehicle). In bad or wintry weather, ensure that the sensors are not covered by mud, ice or snow. Take care not to cover the warning zone in the door mirrors with adhesive labels or other objects. Do not stick labels or attach objects
to the front and rear bumpers; they may hamper the correct operation of the system.
 To deactivate the system, press this button again; the warning lamp goes off. The state of the system remains in memory on switching off the ignition.
The system is automatically deactivated when towing with a towbar approved by CITROËN.

Memorising speeds This memorisation of speeds applies to both the speed limiter and the cruise control.
Operation
You can memorise up to 5 speeds in the system. By default, some speeds are already memorised.  Go to the main menu: - on the monochrome screen C; press the "MENU" button, then select the "Personalisation-configuration" menu and confirm. - on the central colour screen associated
with the satellite navigation system; press the thumb wheel on the left of the steering column.
 Select "Vehicle parameters" menu and confirm.  Select the "Driving assistance" line and
conform.  Select "Speeds memorised" line and confirm.  Modify the speed.  Select " OK " and confirm to save the modifications.
Access
Press the MEM button to display the list of memorised speeds.
Selection
To select a memorised speed:  press and hold the " + " or " - " button; the system stops at the nearest memorised speed,  press and hold again the " + " or " - " button to select another memorised speed. A reminder of the speed and the state of the system (on/off) is displayed in the instrument panel.
For safety reasons, when using the monochrome screen C the driver must only carry out these operations when stationary. These operations are only possible
when stationary, when using the central colour screen associated with the satellite navigation system.

213Driving
System which prevents the vehicle from exceeding the speed programmed by the driver. When the programmed speed limit is reached, pressing the accelerator pedal no longer has any effect.
Speed limiter
The speed limiter cannot, in any circumstances, replace the need to respect speed limits, nor can it replace the need for vigilance and responsibility on the par t of the driver.
The functions of this system are grouped together on the steering mounted controls. 1. Speed limiter mode selection dial. 2. Programmed value decrease button. 3. Programmed value increase button. 4. Speed limiter on/off button. 5. List of memorised speeds display button. (see "Memorising speeds")
Steering mounted controls
The programmed information is grouped together in the instrument panel screen. 6. Speed limiter on/off indication. 7. Speed limiter mode selection indication. 8. Programmed speed value. 9. Selection of a memorised speed. (see "Memorising speeds")
Displays in the instrument panel
Operation
The speed limiter is switched on manually: it requires a programmed speed of at least20 mph (30 km/h). The speed limiter is switched off by manual d offoperation of the control. The programmed speed can be exceeded temporarily by pressing the accelerator firmly beyond the point of resistance. To return to the programmed speed, simply release the accelerator pedal. The programmed speed remains in the memory when the ignition is switched off.

 Turn dial 1 to the "LIMIT" position: the speed limiter mode is selected but is not switched on (Pause). You do not have to switch the speed limiter on
in order to set the speed.  Set the speed value by pressing button 2or 3 (e.g.: 55 mph (90 km/h)).
Programming
You can then change the programmed speed using buttons 2 and 3 : - by + or - 1 mph (km/h) = shor t press, - in steps of + or - 5 mph (km/h) = maintained press. If speed memorisation is available and activated on your vehicle, the programmed speed will stop at the closest memor ised speed; refer to the corresponding paragraph.  Switch the speed limiter on by pressing button 4 .  Switch the speed limiter off by pressing button 4 : the display confirms that it has been switched off (Pause).  Switch the speed limiter back on by pressing button 4 again.
Exceeding the programmed speed
Pressing the accelerator pedal to exceed the programmed speed will not have any effect unless you press the pedal firmly past the mlypoint of resistance . The speed limiter is deactivated temporarily and the programmed speed,
which is still displayed, flashes. Returning to the programmed speed, by means of inten tional or unintentional deceleration of the vehicle, automatically cancels the flashing of the programmed speed.
On a steep descent or in the event of sharp acceleration, the speed limiter will not be able to prevent the vehicle from
exceeding the programmed speed. To avoid any risk of jamming of the pedals: - ensure that the mat is positioned correctly, - do not fit one mat on top of another.
Exiting the speed limiter mode
 Turn dial 1 to the "0" position: the speed limiter mode is deselected. It disappears from the screen.
Operating fault
In the event of a fault with the speed limiter, the speed is cleared resulting in flashing of the dashes. Have it checked by a CITROËN dealer or a qualified workshop.

215Driving
Cruise control
System which automatically maintains the speed of the vehicle at the value programmed by the driver, without any action on the accelerator pedal.
The functions of this system are grouped together on the steering mounted controls. 1. Cruise control mode selection dial. 2. Speed programming/value decrease button. 3. Speed programming/value increase button. 4. Cruise control off/resume button. 5. Stored speeds display button. (see "Storing speeds")
Steering mounted controls
The cruise control system cannot, in any circumstances, replace the need to respect speed limits, nor can it replace the need for vigilance and responsibility on the par t of the driver. You are advised to keep your feet near the pedals at all times.
The programmed information is grouped together in the instrument panel screen. 6. Cruise control off/resume indication. 7. Cruise control mode selection indication. 8. Programmed speed value. 9. Selecting a stored speed. (see "Storing speeds")
Displays in the instrument panel
Operation
The cruise control is switched on manually: it requires a minimum vehicle speed of 25 mph (40 km/h) and engagement of: - four th gear on the manual gearbox, - second gear on the electronic gearbox system, in sequential driving mode, - position A on the electronic gearbox system. The cruise control is switched off manually d offor by pressing the brake or clutch pedal or on triggering of the ESP system for safety reasons. It is possible to exceed the programmed speed temporarily by pressing the accelerator pedal. To return to the programmed speed, simply
release the accelerator pedal. Switching off the ignition cancels any programmed speed value.

Programming
 Turn dial 1 to the "CRUISE" position: the cruise control mode is selected but is not switched on (Pause).  Set the programmed speed by accelerating
to the required speed, then press button 2 or 3 (e.g.: 70 mph (110 km/h)); the cruise control system is activated (ON).
You can then change the programmed speed using buttons 2 and 3 : - by + or - 1 mph (km/h) = shor t press, - in steps of + or - 5 mph (km/h) = maintained press. If storing speeds is available and activated on your vehicle, the programmed speed will stop at the closest stored sp eed; refer to the corresponding section.  Stop the cruise control system by pressing button 4 : this is confirmed in the screen (Pause).
 Switch on the cruise control again with another press on button 4 .
Exceeding the programmed speed
Intentional or unintentional exceeding of the programmed speed results in flashing of this speed in the screen. Return to the programmed speed, by means of intent ional or unintentional deceleration of the vehicle, automatically cancels the flashing of the speed.
Exiting cruise control mode
 Turn dial 1 to the "0" position: the cruise control mode is deselected. It disappears from the screen.
Operating fault
In the event of a cruise control malfunction, the speed is cleared resulting in flashing of the dashes. Have it checked by a CITROËN dealer or a
qualified workshop.
When the cruise control is switched on, be careful if you maintain the pressure on one of the programmed speed changing buttons: this may result in a very rapid change in the speed of your vehicle. Do not use the cruise control on slippery roads or in heavy traffic. On a steep descent, the cruise control will not be able to prevent the vehicle from exceeding the programmed speed. On steep climbs or when towing, the programmed speed may not be reached or maintained. To avoid any risk of jamming of the pedals: - ensure that the mat is positioned correctly,
- never fit one mat on top of another.