2015 Citroen DS5 HYBRID4 fuel

13Hybrid4 system
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Trip computer
System that gives you information on the current journey (range, fuel consumption…).
Instrument panel screen
Information display
 Press the end of the wiper control stalk to display the various tabs in succession.
- The current information tab with: ● t h e r a n g e , ● the current fuel consumption.
- Trip "1" with: ● the average speed, for the first trip. ● the average fuel consumption.
- Trip "2" with: ● the average speed, for the second trip. ● the average fuel consumption.
Tr i p s "1" and "2" are independent but their use is identical. For example, trip "1" can be used for daily figures, and trip "2" for monthly figures. - The energy flows. - The radio or media playing. - N a v i g a t i o n i n s t r u c t i o n s .
Resetting the trip recorder
 When the desired trip is displayed, press the end of the wiper control stalk for more than two seconds.
Resetting the histogramme
(Only with the touch screen tablet)
 When trip "2" is displayed, press the end
of the wiper control stalk for two seconds to reset the fuel consumption histogramme.

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Touch screen tablet
Information display
The current instantaneous fuel consumption tab with: - t h e r a n g e , - the current fuel consumption.
The trip "1" tab with: - the average fuel consumption, - the average speed, for the first trip.
The trip "2" tab with: - the average fuel consumption, - the average speed, for the second trip.
The energy flows. The fuel consumption histogramme.
Trip reset
 Select the " Driving " menu.
The trip computer information is displayed in the primary page of the menu.  Press one of the buttons to display the desired tab.
When the desired trip is displayed, press the reset button or press and hold the end of the wiper control stalk.
Tr i p s "1" and "2" are independent but their use
is identical. For example, trip "1" can be used for daily figures, and trip "2" for monthly figures.
Resetting the histogramme
 When trip "2" is displayed, pressing the reset button also resets the fuel c o n s u m p t i o n h i s t o g r a m m e .

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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Eco-driving
Eco-driving is a range of everyday practices that allow the motorist to optimise their fuel consumption and CO2 emissions.
Adapted to your Hybrid4 vehicle
Use gear selector position A , as this optimises gear changes to suit the circumstances, and the AUTO mode of the Hybrid4 mode selector. When moving off, accelerate normally up to the desired speed ( POWER zone between 20 and 40 %). At steady speeds, drive gently with small movements of the accelerator pedal ( ECO or CHARGE zone), run in electric mode as often as possible when driving at low speed. Anticipate the need to slow down and use engine braking ( CHARGE zone), so as to make use of free energy recovery while keeping light pressure on the accelerator pedal.
For information on other eco-driving practices, refer to the corresponding section of the handbook for the vehicle.

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Unsuitable circumstances:
- If the state of charge of the high voltage battery is lower than 4 bars (equal to 50% charged). In AUTO mode, electric operation is possible with a lower state of charge.
- When the speed of the vehicle exceeds 18 mph (30 km/h), if the internal combustion engine has not already started at least once since the Hybrid4 system was started.
- When the fuel level enters the reserve zone (illumination of the low fuel warning lamp). Where this reserve is is being used up quickly, ZEV may not be possible for some time after refuelling.
- During phases of regeneration of the particle filter (FAP), which is automatically triggered approximately every 300 miles (500 kms) for a period of about 10 minutes. During regeneration of the particle filter, the particles a brought up to a high temperature using the HDi Diesel engine; A message is then displayed: " Electric mode not available: FAP regeneration " .
Maintaining the performance of the system:
- If certain conditions or engine temperature requirements needed by the HDi Diesel engine are not met (for example, in wintry conditions).
- Following a prolonged period with the vehicle parked in the sun.
- When the state of charge of the high voltage battery is close to the maximum level (for example: when going down a long hill using the electric motor for braking), recovery of the vehicle's kinetic energy being no longer possible, the HDI Diesel engine restarts automatically just to provide engine braking.
- On a steep rising slope.
- D r i v i n g a t a l t i t u d e .

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The high voltage battery must not in any circumstances be charged from an external source and must only be handled by a qualified technician at a CITROËN dealer or a qualified workshop. There is the risk of serious burns, as well as electric arcs that could cause serious injury or even death. A used Ni-MH (Nickel Metal Hydride) type high voltage battery must be removed in an appropriate manner by a repair workshop, so that its recycling presents no risk to the environment.
High voltage
The voltage used for the operation of the electric motor is in the range 150 to 270 Volts. Be sure to take account of the warning labels fitted to the vehicle. Take great care regarding the high voltage and high temperatures of components carrying the c u r r e n t .
Emergency cut-off
In the event of an accident, a cut-off system blocks the high voltage current and cuts off the fuel pump; your vehicle can no longer be started. To restart the hybrid system, contact a CITROËN dealer.
High voltage cables are routed under the vehicle (sills); take care not to damage them when the vehicle is used for off-road activity (such as covering rough ground).
Before doing any work on the vehicle, switch off the ignition ( RE ADY l a m p o f f ) . RE ADY l a m p o f f ) . RE ADY
Battery precautions High voltage cables
Take care to position lifting equipment ( jack, hoist, ...) at the locations provided to avoid damaging the cables.
Never touch, dismantle, remove or replace the high voltage parts, orange cables or connectors, even in the event of an accident.

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Diesel engine and gearbox
Diesel engineHDi 160
GearboxETG6 electronic (6- speed)
Model codeRHC8 RHCM
Cubic capacity (cc) 1 9 9 7
Bore x stroke (mm) 85 x 88
Max power: EU standard (kW) * 120
Max power engine speed (rpm) 3 8 5 0
Max torque: EU standard (Nm) 300
Max torque engine speed (rpm) 1 750
Fuel Diesel
Catalytic converter Ye s
Particle filter Ye s
Engine oil capacity with filter replacement (in litres) 5 . 0
* The maximum power corresponds to the type approved value on a test bed, under conditions defined by European legislation (directive 1999/99/EC).

39Frequently asked questions
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Reducing consumption / Fuel
QuestionAnswer
How can I optimise my fuel consumption? Give preference to AUTO mode as it selects in the best way the "driving energy source" to use in order to reduce fuel consumption. You should also adapt your driving style to the characteristics of hybrid vehicles to get the best out of it, for example by taking your foot off the accelerator pedal rather than braking and by anticipating decelerations which allows the recovery of "free" energy for charging the battery (entering a built-up area, stop at traffic lights, stop at halt signs, ...).
Why do I not manage to reduce my fuel consumption even though I often drive in ZEV (Zero Emissions Vehicle) mode?
It is not ZEV mode but AUTO mode that is the most appropriate for reducing fuel consumption, as it selects the best "driving energy source". ZEV mode (100% electric running) can reduce fuel consumption in some cases. However, recharging the traction battery has an energy cost. This is why we recommend using AUTO mode more often.
Why does the trip computer sometimes display the bars for 28 mpg (10 litres/100 km) in town? In traffic jams, the fuel consumption graph displayed may temporarily appear high when the distance covered is very low, but this generally has very little impact and the true average fuel consumption will remain low. In urban driving, your Hybrid4 will remain more efficient in terms of fuel consumption (by around 35%) compared to a conventional vehicle.
Why is my battery rarely fully charged? A partly charged battery is normal operation (4 to 5 bars on average in AUTO mode). This allows some capacity to be left free for the recovery for energy when going downhill or taking when your foot off the accelerator.
Why are there so may fuel alert messages when starting to use the reserve? To encourage you to refuel as soon as possible and to avoid loosing the possibility of all electric running.