2010.5 Citroen DS4 front bumper

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.

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.

267Practical information
Changing a wiper blade
Before removing a front
wiper blade
 Within one minute after switching off the ignition, operate the wiper stalk to position the wiper blades ver tically on the windscreen.
Removing
 Raise the corresponding wiper arm.  Unclip the wiper blade and remove it.
Fitting
 Put the corresponding new wiper blade in place and clip it.  Fold down the wiper arm carefully.
After fitting a front wiper
blade
 Switch on the ignition.  Operate the wiper stalk again to park the wiper blades.
Very cold climate screen * Removable protective screen which prevents the accumulation of snow at the radiator cooling fan.
Fitting
 Offer up the very cold climate screen to the front of the lower section of the front bumper.  Press around its edge to engage its fixing clips one by one.
Removal
 Use a screwdriver as a lever to release each fixing clip in turn.
* According to country.
Do not forget to remove the very cold
climate screen: - when the ambient temperature exceeds 10 °C, - when towing, - at speeds above 75 mph (120 km/h).

269Practical information
 On the front bumper, unclip the cover by pressing at the bottom.  Screw the towing eye in fully.  Install the towing bar.
 On the rear bumper, unclip the cover by pressing at the bottom.  Screw the towing eye in fully.  Install the towing bar.  Switch on the hazard warning lamps on both vehicles.  Move off gently, drive slowly and for a shor t distance.
Towing your vehicle Towing another vehicle
 Place the gear lever in neutral (position N on the electronic gearbox system). Failure to obser ve this special condition could result in damage to cer tain components (braking, transmission...) and the absence of braking assistance the next time the engine is star ted.
 Unlock the steering by turning the key in the ignition one notch and release the
parking brake.  Switch on the hazard warning lamps on both vehicles.
 Move off gently, drive slowly and for a shor t distance.