2014 Citroen DS5 HYBRID4 engine

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Main parts of the Hybrid4 system
The HDi Diesel engine - 1 , located at the front, drives the front wheels and provides most of the power needed to drive the vehicle. It is fitted with an alternator-starter motor( Stop & Star t ) Stop & Star t ) Stop & Star t- 5 which recharges the batteries and provides additional power when needed (in 4x4 mode).
The electric motor - 2 , located at the rear, drives the rear wheels on its own, or supplements the Diesel engine, according to the hybrid mode selected. It recovers energy and charges the batteries during phases of deceleration of the vehicle and is active up to 70 mph (120 km/h).
A 200 V NI-MH high voltage batter y - 3 , provides a source of energy for the rear electric motor. Its charging rate is managed automatically by the vehicle during phases of deceleration. It is located in a compartment in the boot, access to which is restricted to trained service technicians.
The battery state of charge is indicated by 8 horizontal or vertical bars (depending on the screen).
The conventional battery , located under the conventional battery , located under the conventional batterybonnet, powers the vehicle's 12 V systems. It is recharged automatically by the high voltage network.

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The electronic power super visor - 4automatically manages the operation of the two power units (Diesel and electric) to provide the lowest consumption. An inverter and a transformer are needed to manage the electric power. The inverter acts on the torque of the electric motor, by regulating the current coming from the high voltage battery pack. Its operating range is between 150 and 270 volts. The transformer converts the 200 V of the battery pack to 12 V, to power the vehicle's ancillary systems.
The alternator-starter motor - 5 assures the Stop & Star t function which allows the Diesel engine to be put into standby during stops (traffic lights, a stop, or in a traffic jam, for example) or during phases of running in all-electric mode. The stopping and restarting of the Diesel engine is done in a way that is instantaneous and transparent for the driver. It also provides additional charging of the batteries (4x4 mode for example or under-charged high voltage battery).
The electronic gearbox - 6 provides, in automatic mode, significant savings in fuel consumption compared to a conventional manual gearbox, thanks to its electronic control system. It also offers improved driving pleasure with the possibility at any time of choosing the gear changing mode: automatic or manual, using the paddles located behind the steering wheel.

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Before starting
- Place the gear selector lever in position N . - If your vehicle has Keyless Entry and Starting, simply having the key inside the vehicle is sufficient. - If not, place the electronic key in the reader.
- Press the brake pedal. - Make a single short press (about a second) on the START/STOP button. - The steering column locks (noticeable noise and movement of the steering wheel). - Keep your foot on the brake pedal until the Hybrid4 system starts up (the instrument panel and the Ready lamp come on, confirmed by an audible signal).
Starting the Hybrid4 system
Starting - switching off the engine
The hybrid system determines whether it is necessary to start the Diesel engine.
When your vehicle vehicle moves off
in electric mode, it makes no noise. Be ver y careful of pedestrians and cyclists as they will not hear you coming.

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Anti-theft protection
Electronic engine immobiliser
The keys contain an electronic chip which has a secret code. When the ignition is switched
on, this code must be recognised in order for starting to be possible. This electronic engine immobiliser locks the engine management system a few minutes after the ignition is switched off and prevents starting of the engine by anyone who does not have the key. In the event of a malfunction, you are informed by a message in the instrument panel screen. In this case, your vehicle does not start; contact a CITROËN dealer as soon as possible.
Ignition on without
starting
With the electronic key in the reader or the Keyless Entry and Starting key inside the vehicle, pressing the "START/STOP" button, with no action on the pedals , allows the ignition to be switched on.
 Press the "START/STOP" button, the instrument panel comes on but the engine does not start.  Press the button again to switch off the ignition and so allow the vehicle to be locked.
With the ignition on, the system goes into energy economy mode when necessary to maintain the state of charge of the battery.

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Back-up starting with the Keyless Entry and Starting system
When the electronic key is in the defined zone and your vehicle does not start after pressing the "START/STOP" button:  Insert the electronic key in the reader.  Press the brake pedal.  Press the "START/STOP" button. The hybrid system is active.
Back-up switch-off
In the event of an emergency only, the engine can be switched of without any conditions. To
do this, press and hold the "START/STOP" button for about 3 seconds. In this case the steering column locks as soon as the vehicle stops.
Electronic key not recognised by the "Keyless Entry and Starting" system
If the electronic key is no longer in the defined zone when driving or when you (later) request switching off of the hybrid system, a message appears in the instrument panel.
 Press and hold the "START/STOP" button for about 3 seconds if you want to force
switching off of the hybrid system (note that restarting will not be possible without the electronic key in the defined zone).
The electronic key must always remain inside the vehicle when in use.

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Hybrid4 mode selector
The selector allows the user to choose between 4 drive modes for the vehicle. Turn the dial to the right or left; the mode selected is confirmed by illumination of the corresponding i n d i c a t o r.
ZEV mode, to force electric running.
SPORT mode, to make use of the maximum per formance of the vehicle.
4WD mode, to force the vehicle into 4x4 mode.
AUTO mode, for normal use and optimised fuel consumption.
On starting the vehicle: with the gear selector in position N , press the brake pedal and press the START/STOP button to activate the hybrid system. This lamp comes on when the vehicle is ready to move off ("Auto" mode is on by default) and so the driver can press the accelerator. This lamp comes on more or less instantly but may take a few seconds in some cases (in particular, the time needed for pre-heating the Diesel engine in cold weather or, for example, in energy economy mode, ...).
Ready lamp
With the vehicle stationary, press the START/STOP button and check that the Ready lamp is off when leaving the vehicle, other wise the hybrid system will still be active.
For more information, refer to the section on "Underbonnet precautions / warnings".

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ZEV mode *
(all electric)
Zero emissions vehicle operation is assured 100 % by electric drive. This mode forces silent running at moderate speeds.
It can be activated when the required conditions are met, particularly if the state of charge of high voltage battery is sufficient (from 4 bars).
Auto mode
It automatically manages the operation of the Diesel engine and the electric motor, according to inherent vehicle parameters, traffic conditions and driving style so as to optimise the vehicle's fuel consumption . In particular, this mode activates "zero emissions" electric running when the conditions allow.
In auto mode, the electric motor : - can drive the vehicle on its own up to around 36 mph (60 km/h) in "zero emissions" electric running, depending on the state of charge of the battery, if the conditions specific to the vehicle are met and if acceleration is moderate, - supplements the Diesel engine when moving off and changing gear, during acceleration and when traction from the front wheels is inadequate (it automatically adds 4 wheel drive ), - is no longer active above 70 mph (120 km/h).
* ZEV: Zero Emissions Vehicle.
This standard mode to use in preference is activated automaticallyon starting the hybrid system.

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Sport mode
(Diesel and
electric)
4WD mode **
(Diesel and
electric)
This mode allows more dynamic driving by providing additional performance . Vehicle acceleration and pick-up are maximised by using the capacity of the electric motor, supplementing the power of the Diesel engine. This mode manages the progressiveness of the accelerator, the electronic gearbox and the use of the electric motor. In Sport mode: - The electric motor can be used up to 70 mph (120 km/h).
This mode provides additional traction *** at low speed by driving all 4 wheels of the vehicle continuously: the Diesel engine (front wheel drive) and the electric motor (rear wheel drive) operate simultaneously and permanently. Their coupling is managed electronically to optimise traction on slippery sur faces. In 4WD mode: - Power for the electric motor is provided, if needed, by the alternator-starter motor of the front engine. The Diesel engine operates continuously. - The additional traction from the electric motor is available up to 75 mph (120 km/h).
In ZEV mode: - Range and acceleration capacity are limited. The maximum speed possible is around 36 mph (60 km/h). - Under high load or a priority requirement causing the start of the Diesel engine, the system changes automatically to AUTO mode.
If the conditions do not allow this mode, a message that the "electric mode is not currently available" appears in the screen. The ZEV warning lamp flashes for a few seconds then goes off and the selector comes on in AUTO.
This mode should be used on snow covered roads or difficult ground (mud, sand, ...). In this mode, in severe conditions and if the circumstances allow, it is recommended that you accelerate strongly to ensure that you move off and avoid any risk of getting stuck. The addition of 4WD traction is available whatever: - the state of charge of the traction battery, - the altitude.
For more information on "Automatic restarting of the Diesel engine or ZEV mode not available", refer to the corresponding section.
** 4WD: 4 Wheel Drive. *** This mode will be even more effective if
suitable tyres are fitted (winter tyres in particular).