Citroen DS5 HYBRID4 RHD 2011.5 1.G Owner's Guide

29Hybrid system
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 the Stop & Start
system - 5
which recharges the batteries and provides additional power when needed (in 4x4 mode).

Th
e 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 battery - 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 compar tment in the boot, access to which is restricted to trained ser vice
t
echnicians.

The batter
y state of chargeis indicated by 8 horizontal or vertical bars (depending on the screen).

Th
e conventional battery, located under the bonnet, powers the vehicle's 12 V systems. It is yrecharged automatically by the high voltage network.

The electronic power super visor - 4automatically manages the operation of the two power units(Diesel and electric) to provide the lowest consumption.
An inver ter and a transformer are needed to manage the electric power.
The inver ter 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 conver ts the 200 V of the battery pack to 12 V, to power the vehicle's ancillarysystems.
Th
e Stop & Start system - 5
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 restar ting of the Diesel engine is done in a way that is instantaneous and
transparent for the driver.
Th
e electronicgearbox - 6provides, 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.

Hybrid system
Starting your vehicle



- Ensure that the gear lever is in position N.


- Inser t the electronic key in the reader or, if fitted with Keyless Entry and Star ting, keep the electronic key in the vehicle.

- Press firmly on the brake pedal, then press the START/STOP switch to star t up the hybrid system.



-
The instrument panel and the Readylamp light up. The power graduation is displayedprogressively, indicating that the hybrid system is active, confirmed by a message "hybrid
system active"
; the dial in the centre console is in AUTOmode (default mode for starting).

- The hybrid system determines whether it is necessary to star t the Diesel engine.



- With the brake still applied, move the
gear lever to position Ato go for wards or R
(by lifting the
lever slightly) for reverse.

- Lift your foot off the brake pedal, you can move off.

- The parking brake is released automatically as you move off, if configured to do so (otherwise, release the parking brake manually).

Stopping your vehicle and the hybrid system
When your vehicle vehicle moves off in electric mode,it makes no noise. Be verycareful of pedestrians as they will not hear you coming.
- Apply the brake until the vehicle comes to a complete stop.
- Place the gear lever in position N.- Place the electronic key inside the vehicle, then press the START/STOPswitch; the parking
brake is applied automatically if configured to do so.
- Otherwise apply the parking brake manually, the P
warning lamp must be on.



When stationary, switch off the ignition and check that the Readylamp is off beforeleaving the vehicle. Otherwise the hybrid system will still be active. See the section on"Underbonnet precautions/warnings".

33Hybrid system











Anti-theft protection
Electronic engine immobiliser
The keys contain an electronic chip which hasa secret code. When the ignition is switchedon, this code must be recognised in order for
star ting to be possible.
This electronic en
gine 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; contacta CITROËN dealer as soon as possible.
Ignition on without starting
the engine
(accessory position)

With the electronic key in the reader or the
Keyless Entry and Star ting key inside the
vehicle, pressing the "START/STOP" button,
with no action on the pedals, allows the ignition
to be switched on and so activate the ancillary equipment.
)
Press the "START/STOP" button,
the instrument panel comes on but the engine does not star t.) Press the button again to switch
off the ignition and so allow the
vehicle to be locked.
Using the ancillaries for a long period introduces the risk of a flat battery.

Back-up starting with the Keyless Entry and Starting
system
When the electronic key is in the defined zone and your vehicle does not star t after pressingthe "STA R T/STOP" button: )Inser t the electronic key in the reader. )Press the brake pedal. )Press the "STA R T/STOP" button.
The hybrid system is active.



Back-up switch- off

In the event of an emergency only, the enginecan be switched of without any conditions. To do this, press and hold the "STA R T/STOP"button for about 3 seconds.
In this case the steering column locks as soon
as the vehicle stops.

Electronic key not recognised bythe "Keyless Entry and Starting"
system
If the electronic key is no longer in the defined
zone when driving or when you (later) try
to switch off the hybrid system, a message
appears in the instrument panel.
)Press and hold the "STA R T/STOP" button for about 3 seconds if you want to force
the hybrid system to switch off (note that restar ting will not be possible without theelectronic key in the defined zone).

35
Hybrid system








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 thecorresponding indicator.
ZEVmode, to
force electric running.S
portmode, to make use of the maximum performance of the vehicle.
4WDmode, to force the vehicle into 4x4 mode.

AUTOmode, for normal use and optimised fuelconsumption. On star ting the vehicle: with the gear lever in position N, press the brake pedal and press
the STA R T/STOP switch to activate the hybrid system.
This lamp comes on when the vehicle is ready
to move off ("Auto" mode is on by default) andso the driver can press the accelerator.
This lamp comes on more or less instantlybut may take a few seconds in some case (in particular, the time needed for pre-heating the
Diesel engine in cold weather).









Ready lamp
When stationary, ensure that you press the STA R T/STOP switch and check that the Readylamp is off when leaving thevehicle. Otherwise the hybrid systemwill still be active. See paragraph "Under bonnet precautions/warnings".

ZEV mode *
(all electric)

Zero emissions vehicle operation is assured10 0 % by electric drive.
This mode forces silent running
at moderate speeds.
It
can be activated when therequired conditions are met, particularly if the state of charge of high voltage battery is sufficient (4 bars minimum).

Auto mode
It automatically manages the operation of theDiesel 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 runningwhen theconditions allow.
In auto mode, the electric motor:

- can drive the vehicle on its own up
to around 36 mph (60 km/h) in "zeroemissions" electric running, dependingon the state of charge of the battery, if the conditions specific to the vehicle are met
and if acceleration is moderate,

- supplements the Diesel en
gine
when
moving off and changing gear, duringacceleration and when traction from the front wheels is inadequate (it automatically adds4 wheel drive),

- is no longer active above 70 mph (120 km/h).



*
ZEV: Z
ero Emissions Vehicle.
This standardmode to use in preference
is activated automaticallyon starting the hybrid system.

37
Hybrid system

Sport mode
(Diesel and
electric)


4WD mode **

(Diesel and
electric)
This mode allows more dynamic driving byproviding 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 theaccelerator, 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 tooptimise traction on slippery sur faces.
In 4WD mode:


- Power for the electric motor is provided,
i
f needed, by the alternator-star ter motor
of the front engine. The Diesel engine
operates continuously.

- The additional traction from the electricmotor is available up to 70 mph (120 km/h). In ZEV m
ode:


- the accelerator control is progressive.

- 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 star t of the Diesel engine, the
system changes automatically to AUTO mode.I
f the conditions do not allow this mode, a message that the ZEV mode is not available appears in
the screen, the ZEV warning lamp
flashes for a few seconds then goes off and theselector comes on in AUTO.
This mode should be used on snowcovered roads or difficult ground (mud, sand, ...).
For more information on "Automatic
restarting of the Diesel engine", refer to the corresponding section.

**

4WD: 4 Wheel Drive.
***

This mode will be even more effective if suitable tyres are fitted (winter tyres inparticular).

Energy consumption/generation indicator
The indicator dial provides real time information
on the total power used, combining electric and
Diesel.
It comprises three main zones.

ECO zone

Zone which indicates that the vehicle is optimising its energy consumption
, electric, Diesel or a combination of both.
This zone corresponds to phases of electric
running as well as to phases of optimum use of
the Diesel engine, which are easily accessible
with a suitable driving style (smooth "eco-citizen" driving).

CHARGE zone

Zone which indicates that the vehicle is
in electrical energy recovery phase: on ydeceleration, braking or foot off the accelerator, ...
This allows the high voltage battery to be
recharged using "free" energy which can then be reused
for future energy requirements.