warning Citroen DS4 2010.5 1.G Repair Manual

203Driving
For optimum acceleration, for example
when over taking another vehicle, press the accelerator pedal firmly past the point of resistance.
Manual gear changing
This selective gear change mode enables you to over take, for example, while still remaining in automatic mode.  Operate the + or - steering mounted control paddle. The gearbox engages the gear requested if the engine speed permits. AUTO is still displayed in the instrument panel. After a few moments without any action on the controls, the gearbox resumes automatic control of the gears.
Manual mode
 After star ting the vehicle, select position Afor enter automatic mode.
Automatic mode
AUTO and the gear engaged appear in the instrument panel screen.
The gearbox is then operating in auto-active mode, without any action on the par t of the driver. It continuously selects the most suitable gear, depending on the: - style of driving, - profile of the road.
 When the vehicle has moved off, select position M to change to manual mode.
AUTO disappears and the gears engaged appear in succession in the instrument panel screen.
The gear change requests are only carried out if the engine speed permits. It is not necessary to release the accelerator during gear changes. When braking or slowing down, the gearbox changes down automatically to allow the vehicle to accelerate in the correct gear.
At very low speed, if reverse gear is requested, this will only be taken into account when the vehicle is immobilised. The Foot on brakewarning lamp may flash in the instrument panel to prompt you to brake.
On sharp acceleration, the gearbox will not change up unless the driver acts on the gear lever or the steering mounted paddles. Never select neutral N while the vehicle
is moving. Only engage reverse gear R when the vehicle is immobilised with the brake pedal pressed.

205Driving
System which keeps your vehicle immobilised temporarily (approximately 2 seconds) when star ting on a gradient, the time it takes to move your foot from the brake pedal to the accelerator pedal. This function is only active when: - the vehicle is completely stationary, with your foot on the brake pedal, - when certain conditions of gradient are met, - with the driver’s door closed. The hill star t assist function cannot be deactivated.
Hill start assist
On an ascending slope, with the vehicle stationar y, the vehicle is held for a brief moment when you release the brake pedal: - provided you are in first gear or neutral with a manual gearbox, - provided you are in position A or M with the electronic gearbox system.
Operation
Operating fault
If a fault occurs with the system, these warning lamps come on. Contact a CITROËN dealer or a qualified workshop to have the system checked.
Do not leave the vehicle while it is being held in the hill star t assist phase. If you need to leave the vehicle while the engine is running, apply the parking brake manually then ensure that the parking brake warning lamp is on (not flashing) in the instrument panel.
On a descending slope, with the vehicle stationar y and reverse gear engaged, the vehicle is held for a brief moment when you release the brake pedal.

Stop & Start The Stop & Star t system puts the engine temporarily on standby - STOP mode - during stops in the traffic (red lights, traffic jams, or other...). The engine restar ts automatically - START mode - as soon as y ou want to move off. The restar t takes place instantly, quickly and silently. Per fect for urban use, the Stop & Star t system reduce s fuel consumption and exhaust emissions as well as the noise level when stationary.
Operation
Going into engine STOP mode
With the automatic gearbox system, for your comfor t during parking maoeuvres, STOP mode is not available for a few seconds after coming out of reverse gear. STOP mode does not affect the functionality of the vehicle, such as braking, power steering, for example.
Never refuel with the engine in STOP mode; you must switch off the ignition with the key.
The "ECO" warning lamp comes on in the instrument panel and the engine goes into standby:
- with a manual gearbox , at speeds below 12 mph (20 km/h), when you put the gear lever into neutral and release the clutch pedal, - with the 6-speed electronic gearbox system , at a speed below 5 mph (8 km/h),
when you press the brake pedal or put the gear lever into position N .
If your vehicle is fitted with the system, a time counter calculates the sum of the periods in STOP mode during a journey. It resets itself to zero every time the ignition is switched on with the key.
STOP mode is not invoked when: - the driver's door is open, - the driver's seat belt is not fastened, - the vehicle has not exceeded 6 mph (10 km/h) since the last engine start using the key, - the electric parking brake is applied or being applied, - the engine is needed to maintain a comfor table temperature in the passenger compar tment, - demisting is active, - some special conditions (battery charge, engine temperature, braking assistance, ambient temperature...) where the engine is needed to assure control of a system.
Special cases:STOP mode unavailable
In this case, the "ECO" warning lamp flashes for a few seconds, then goes off. This operation is per fectly normal.

207Driving
Going into engine START mode
The "ECO" warning lamp goes off and the engine star ts:
- with a manual gearbox , when you depress the clutch pedal, - with the 6-speed electronic gearbox system:

at every new star t using the key.
Reactivation
This system requires a specific battery with a special specification and technology (reference numbers available from a CITROËN dealer or a qualified workshop). Fitting a battery not listed by CITROËN introduces the risk of malfunction of the system. In the event of a malfunction with the system, the "ECO OFF" switch warning lamp flashes, then comes on continuously. have it checked by a CITROËN dealer or a qualified workshop. In the event of a fault in STOP mode, the vehicle may stall. It is then necessary to switch off the ignition and star t the engine again using the key.
Operating fault Maintenance
Before working under the bonnet, deactivate the Stop & Star t system to avoid any risk of injury resulting from automatic operation of START mode.
The Stop & Star t system makes use of advanced technology. All work on this type of battery must be done only by a CITROËN dealer or a qualified workshop.
Press the "ECO OFF" switch again. The system is active again; this is confirmed
by the switch warning lamp going off and a message in the instrument panel.

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.

217Driving
Parking space sensors
System which measures the parking space available between two vehicles or obstacles. It measures the size of the space and gives you information on: - the possibility of fitting into a free space,
depending on the dimensions of your vehicle and the distances needed for manoeuvring, - the level of difficulty of the manoeuvre to be per formed. The system does not measure spaces which
are clearly much smaller or larger than the size of the vehicle.
Displays in the instrument panel You have identified a parking space:  Press button A to select the function.  Operate the direction indicator on the side where the space is to be measured; a message is displayed to confirm that measurement is in progress.  During measurement, go for ward the length of the space, at a speed less than 12 mph (approx. 20 km/h), to prepare for your manoeuvre.  Once the measurement has been completed, the system informs you of the level of difficulty of the manoeuvre by a message in the multifunction screen
accompanied by an audible signal.
Operation
The parking space sensor function warning lamp can have two different states:
- on fixed: the function is selected by a press on control A . - off: the function is not selected,

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.