2015 Citroen DS5 HYBRID4 4WD

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The electronic power super visor (4)
manages the operation of the two power units, HDi Diesel and electric, giving priority to low fuel consumption.
The alternator-starter motor (5) assures the
Stop & Star t function, which allows the HDi Diesel engine to be put into standby when the vehicle is at a standstill (traffic lights, a stop, or in a traffic jam...) or during phases of running in 100% electric mode. The stopping and restarting of the HDi Diesel engine is done automatically and instantly without any action on the part of the driver. This alternator-starter motor also provides additional charging of the high-voltage battery by the HDi Diesel engine, if this not sufficiently charged, or in 4WD mode for example.
The 12 V batter y , located under the bonnet, 12 V batter y , located under the bonnet, 12 V batter y
powers the vehicle's conventional electrical system. It is used for starting the HDi Diesel engine and the operation of the vehicle's equipment, such as the lighting, wipers, audio system... This 12 V battery is recharged automatically by the high voltage network.

7Hybrid4 system
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Compared to a manual gearbox, the ETG6
electronic gearbox (6) provides, in automatic mode, significant savings in fuel consumption, through the electronic management of gear changes.
The mode selector (8) allows selection of the
four operating modes offered by the Hybrid4 system: - AUTO mode, which optimises fuel consumption by automatically managing the alternate or simultaneous use of the two motors, - ZEV (Zero Emissions Vehicle) mode, which provides 100% electric drive, when the driving conditions and the state of charge of the battery permit, - SPORT mode, which provides more dynamic driving with additional performance, - 4WD (4 Wheel Drive) mode, which improves traction at low speed when grip is poor (snow, mud, sand...).

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Display of energy fl ows
Display of fl ows in the instrument panel
Hybrid4 modes
1. Hybrid4 mode selected ( AUTO , ZEV , ZEV , ZEVSPORT or 4WD ) . 2. "Zero Emission" messages if the HDi Diesel engine is stopped (0 g/km CO2) .
Display of fl ows in the touch screen tablet
Information on the hybrid mode selected ( 1, 2 ), arrows for energy flows ( 6 to 8 ) and the state of charge of the high voltage battery ( 4 ), is displayed in real time in the instrument panel screen or the the touch screen tablet. See the "Trip computer" section.
Vehicle infrastructure
3. HDi Diesel engine. 4. State of charge of the high voltage battery. 5. Electric Motor/Generator.
Operation / Energy flows
6. The HDi Diesel engine supplies the battery (as needed). 7. Arrow from left to right: the battery powers the electric motor (when the electric motor is operating). Arrow from right to left: the electric motor/generator recharges the battery (energy recovery phases). 8. The HDi Diesel engine drives the front wheels. 9. The electric motor drives the rear wheels.

19Hybrid4 system
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Mode selector
The selector allows the driver to select one of the four operating modes offered by the Hybrid4 system.  Turn the dial to the right or left; the mode selected is confirmed by illumination of the corresponding indicator lamp.
ZEV mode: for 100% electric running.
SPORT mode: to make use of the maximum per formance of the vehicle.
4WD mode: to force 4x4 drive.
AUTO mode: for everyday use and optimised fuel consumption.
By default, the selector is in the AUTO position when starting the Hybrid4 system, whatever position it was in when the ignition was switched off.
AUTO mode
This mode is designed to optimise the vehicle's fuel consumption by managing the alternate or simultaneous operation of the two motors according to the conditions and driving style. When conditions allow, an adequate battery state of charge and moderate acceleration, the alternator-starter motor stops the HDi Diesel engine to provide 100% electric running.

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SPORT mode
(Diesel and
electric)
4WD mode
(4 - wheel
drive)
This mode allows more dynamic driving by providing additional performance . By using the capacity of the electric motor to supplement the power of the HDi Diesel engine, the vehicle's full power is used for acceleration and pick-up. This mode manages the response of the accelerator, the electronic gearbox and the use of the electric motor. In SPORT mode: - the electric motor as an addition is available up to 75 mph (120 km/h).
This "4-wheel drive" mode provides additional traction * at low speed by driving all four wheels of the vehicle simultaneously: the HDi Diesel engine (front wheel drive) and the electric motor (rear wheel drive) operate simultaneously and permanently. Their coupling is managed electronically to optimise traction when grip is poor. In 4WD mode: - the HDi Diesel engine operates continuously; if necessary, it supplies energy for the electric motor, - the additional traction from the electric motor is available up to 75 mph (120 km/h).
This mode should be used on snow covered roads or difficult ground (mud, sand, ...), as well as for crossing a ford, at moderate speed. In this mode, in severe conditions and if the circumstances allow, it is recommended that you accelerate strongly to facilitate moving off and making progress and so reduce the risk of getting stuck. The addition of 4WD traction is available whatever: - the state of charge of the 12 V
battery, - t h e a l t i t u d e .
* This mode will be even more effective if the vehicle is fitted with tyres suitable for winter conditions.

23Hybrid4 system
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A few driving recommendations
Observe the driving regulations at all times and remain vigilant whatever the traffic conditions. Pay close attention to the traffic and keep your hands on the wheel so that you are ready to react at any time to any eventuality. On a long journey, a break every two hours is strongly recommended. In difficult weather, drive smoothly, anticipate the need to brake and increase the distance from other vehicles.
Driving on flooded
roads
We strongly advise against driving on flooded roads, as this could cause serious damage to the internal combustion engine or electric motor, the electronic gearbox, or the electrical systems of your vehicle.
If you are obliged to drive through water:
- check that the depth of water does not exceed 15 cm, taking account of waves that might be generated by other users, - place the mode selector in the 4WDposition, - drive as slowly as possible without stalling. In all cases, do not exceed 6 mph (10 km/h), - do not stop and do not switch off the
engine. On leaving the flooded road, as soon as circumstances allow, make several light brake applications to dry the brake discs and pads. If in doubt on the state of your vehicle, contact a CITROËN dealer or a qualified workshop.
Important!
Never drive with the parking brake applied - Risk of overheating and damage to the braking system! Do not park or run the engine when stationary in areas where inflammable
substances and materials (dry grass, dead leaves...) might come into contact with the hot exhaust system or certain components of the Hybrid4 system which can reach very high temperatures - Risk of fire!
Never leave a vehicle unsupervised with the engine running. If you have to leave your vehicle with the engine running, apply the parking brake and put the electronic gearbox into position N .

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Recovery of the vehicle on a fl at-bed
Never recover the vehicle by towing it with two or four wheels on the ground, as there is a risk of damage to the transmission. However, if necessary because access to the vehicle is difficult, the vehicle can be moved a few dozen metres, at a speed of less than 6 mph (10 km/h).
Use the towing eye only to pull the vehicle out or to lash it for recovery on a flat-bed lorry or
t r a i l e r .
Before doing any work, with the ignition on, press the brake pedal and place the gear selector at position N , then switch off the Hybrid4 system ( RE ADY lamp off). RE ADY lamp off). RE ADY Always call on professionals for recovery of the vehicle on a flat-bed lorry or trailer.
Snow chains
Recommendations
The use of snow chains is only authorised on the front wheels. The mode selector must be in the 4WD p o s i t i o n .
For information on the sizes compatible with the tyres on your vehicle and advice on use, refer to the corresponding section in the handbook for the vehicle.