2010.5 Citroen DS4 sensor

The function displays the following types of message: The function deselects itself automatically: - when you engage reverse gear, - when you switch off the ignition, - if measuring is not requested,
- within five minutes of selection of the function, - if the vehicle speed exceeds the threshold of 45 mph (approx. 70 km/h) for one minute.
If the lateral distance between your vehicle and the parking space is too large, the system may not be able to measure the space.
The system remains available after each measurement and can therefore measure several spaces in succession. In poor or wintry weather, ensure that the
sensors are free of dir t, ice or snow. The parking space sensor system deactivates the front parking sensors when measuring for wards.
Parking possible
Parking difficult
Parking not advised
If there is a fault, have the system checked by a CITROËN dealer or a qualified workshop.

219Driving
Parking sensors
This system indicates the proximity of an obstacle (person, vehicle, tree, gate, etc.) which comes within the field of detection of sensors located in the bumper.
Cer tain types of obstacle (stake, roadworks cone, etc.) detected initially will no longer be detected at the end of the manoeuvre due to
the presence of blind spots.
This function cannot, in any circumstances, take the place of the vigilance and responsibility of the driver.
The system is switched on by engaging reverse gear. This is accompanied by an audible signal. The system is switched off when you exit reverse gear.
Rear parking sensors
Audible assistance
The proximity information is given by an intermittent audible signal, the frequency of which increases as the vehicle approaches the obstacle. The sound emitted by the speaker (right or left) indicates the side on which the obstacle is located. When the distance between the vehicle and the obstacle becomes less than approximately thir ty centimetres, the audible signal becomes continuous.
Visual assistance
This supplements the audible signal by displaying bars in the multifunction screen which move progressively nearer to the vehicle. When the obstacle is near, the "Danger" symbol is also displayed in the screen.

Operating fault
If an operating fault occurs, when reverse gear is engaged this warning lamp is displayed in the
instrument panel and/or a message appears in the screen, accompanied by an audible signal (shor t beep). Contact a CITROËN dealer or a qualified workshop.
In addition to the rear parking sensors, the front parking sensors are triggered when an obstacle is detected in front and the speed of the vehicle
is still below 6 mph (10 km/h). The sound emitted by the speaker (front or rear) indicates whether the obstacle is in front or behind. The front parking sensors are interrupted if the vehicle stops for more than three seconds in for ward gear, if no fur ther obstacles are detected or when the speed of the vehicle exceeds 6 mph (10 km/h).
The function will be deactivated automatically if a trailer is being towed or a bicycle carrier is fitted (vehicle fitted with a towbar or bicycle carrier recommended by CITROËN).
In bad weather or in winter, ensure that the sensors are not covered with mud, ice or snow. When reverse gear is engaged, an audible signal (long beep) indicates that the sensors may be dir ty. When the vehicle is moving at a speed below 6 mph (10 km/h), cer tain sound sources (motorcycle, lorry, pneumatic drill, etc.) may trigger the audible signals of the parking sensor system.
Deactivation/Activation of the front and rear parking sensors
The function is deactivated by pressing this button. The indicator lamp in the button
comes on. Pressing this button again reactivates the function. The indicator lamp in the button goes off.

The spare wheel is installed in the boot under the floor. Depending on version, the spare wheel may be a standard size steel or alloy wheel, or for some countries it is the "space saver" type. For access to the spare wheel, refer to the paragraph "Access to the tools" on the previous page.
Access to the spare wheel
Tyre under-infl ation detection
The spare wheel is not fitted with a sensor. The punctured wheel must be repaired by a CITROËN dealer or aqualified workshop.
Taking out the standard wheel
 Unscrew the yellow central bolt.  Raise the spare wheel towards you from
the rear.  Take the wheel out of the boot.

Changing the side spotlamps
For the replacement of this type of LED lamp, contact a CITROËN dealer or a qualified workshop.
Changing the LED lamps/sidelamps
For the replacement of this type of LED lamp, contact a CITROËN dealer or a qualified workshop.
Changing foglamp bulbs
 Introduce a flat screwdriver in the hole in the finisher.  Pull and lever to unclip the bumper finisher (the parking sensor stays with the finisher).  Remove the two module fixing screws and remove it from its housing.
 Disconnect the bulb holder connector.  Turn the bulb holder a quar ter of a turn and extract it.  Pull the bulb and change it. To refit, carry out these operations in reverse order. To replace these bulbs you may also contact a CITROËN dealer or a qualified workshop.

271Practical information
The rear parking sensors will be deactivated automatically if a genuine
CITROËN towbar is used.
Driving advice
Distribution of loads
 Distribute the load in the trailer so that the heaviest items are as close as possible to the axle and the nose weight approaches the maximum permitted without exceeding it. Air density decreases with altitude, thus reducing engine per formance. Above 1 000 metres, the maximum towed load must be reduced by 10 % for every 1 000 metres of altitude. Refer to the "Technical Data" section for details of the weights and towed loads which apply to your vehicle.
Side wind
 Take into account the increased sensitivity to side wind.
Cooling
Towing a trailer on a slope increases the temperature of the coolant. As the fan is electrically controlled, its cooling capacity is not dependent on the engine speed.  To lower the engine speed, reduce your speed. The maximum towed load on a long incline depends on the gradient and the ambient temperature. In all cases, keep a check on the coolant temperature.
Braking
Towing a trailer increases the braking distance.
Tyres
 Check the tyre pressures of the towing vehicle and of the trailer, obser ving the recommended pressures.
Lighting
 Check the electrical lighting and signalling on the trailer.
 If the warning lamp and the STOP warning lamp come on, stop the vehicle and switch off
the engine as soon as possible.

Accessories A wide range of accessories and genuine par ts is available from the CITROËN dealer network. These accessories and par ts have been tested and app roved for reliability and safety. They are all adapted to your vehicle and benefit from CITROËN's recommendation and warranty.
"Comfort":
door deflectors, side window blinds, rear screen blind, isotherm module, coat hanger fixed to head restraint, mobile reading lamp, mirror for caravan, parking sensors...
"Transport systems":
child seats and booster cushions, boot carpet, boot liner, boot net, boot spacers, transverse roof bars, bicycle carrier, ski carrier, roof boxes, towbars, wiring harnesses...
"Styling":
gear lever knobs, aluminium foot rest, alloy wheels, chrome mirror shells, chrome door aper ture finishers...
"Security and safety":
anti-intrusion alarm, anti-tilt unit, stolen vehicle tracking system, child seats and booster cushions, breathalyser, first aid kit, fire extinguisher, warning triangle, high visibility vest, wheel security bolts, snow chains,non-slip covers...
If a towbar and wiring harness are fitted outside the CITROËN dealer network, the installation must be done using the vehicle's electrical pre-equipment and fitted following the manufacturer's recommendations.
* To avoid any risk of jamming the pedals: - ensure that mats are correctly positioned and secured, - never fit one mat on top of another.
"Protection":
mats * , seat covers compatible with lateral airbags, mud flaps, door protective mouldings, bumper protection strips, vehicle cover...