Page 353 of 376

27Hybrid4 system
200 V high voltage battery
The Ni-Mh (Nickel-Metal Hydride) technology
used for the high voltage battery is suited to
the frequent partial charging and discharging
cycles related to the operation of a hybrid
vehicle.
The battery is installed close to the electric
motor, below the boot trim, behind the storage
well.
Charging
The battery recharges automatically while
travelling.
The battery is charged when the vehicle
decelerates and when going downhill, the
electric motor then becomes a generator and
conver ts kinetic energy into electrical energy
(except if the speed of the vehicle is above
70 mph (120 km/h)).
This recovery allows the use of "free" energy.
The battery may also be partially charged up
to a level of 4 to 5 bars, using the alternator-
starter motor (Stop & Start) of the HDi Diesel
engine.
The average state of charge is 4 to 5 bars, so
preser ving a margin for energy recovery when
deceleration or going downhill (free energy).
To preser ve the ser vice life of the
battery, the level of charge never
falls below 20%, even if no bars are
displayed on the gauge after ZEV
running.
Where the battery is close to maximum,
vehicle deceleration with your foot off
the accelerator pedal will be at a lower
level.
The battery charging time is very short.
Once it is discharged, following ZEV
running
or high load, the battery will reach its optimum
level of charge after around 10 minutes.
The battery is not recharged from a
mains power supply.
Page 354 of 376

Safety warnings related to high voltage
The voltage used for the operation of
the electric motor is in the range 150 to
270 Volts.
Do not handle the components of the high
voltage system (identified by the orange
colour): risk of electrocution and burns!
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
( READY
lamp off).
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.
To avoid any risk to the environment,
the high voltage battery must be
recycled in an appropriate manner.
Contact a CITROËN dealer or a
qualified workshop.
Be sure to take account of the warning
labels present on the vehicle.
Battery electrolyte is very corrosive: risk of
burns.
No sparks or naked flames.
Do not burn or heat.
Keep out of reach of children.
Do not spray or pour fluids: risk of damage
to the battery.
Emergency cut-off
In the event of an accident, a safety
system automatically cuts-off the high
voltage system and the fuel supply.
The Hybrid4 system can no longer be
started.
You must then contact a CITROËN
dealer or a qualified workshop.
Operations on the
battery
The high voltage battery must not in
any circumstances be charged from an
external power supply and must only
be handled by a qualified technician
at a CITROËN dealer or a qualified
workshop.
Incorrect handling may lead to serious
burns, as well as electric arcs that could
cause serious injury or even death.
Page 355 of 376
29Hybrid4 system
This ventilation system does not operate at
the same speed at all times: it is continuously
adjusted to suit the cooling requirements of the
battery.
The noise of its operation can be heard,
particularly at the rear, after the Hybrid4 system
is switched off (post-ventilation).
Ventilation of the high voltage battery
Safety recommendations
Do not obstruct the air intake with
objects such as clothes or bags, in
order to avoid any risk of the battery
overheating, which could cause a loss
of per formance of the Hybrid4 system,
even damage to the battery.
Do not spill fluids, as this may damage
the battery and cause a short-circuit.
The high voltage battery has an air cooling
system.
This comprises an air intake (located on
the side of the left hand rear seat) and a fan
(located behind the left hand boot trim panel).
Page 356 of 376
Access to the underbonnet
The alternator-starter motor of your Hybrid4
vehicle is also supplied at high voltage.
If the vehicle ignition has not been switched off,
there is a risk of the engine restarting at any
time.
Always ensure that the
ignition is switched off
( READY
lamp off) before
opening the bonnet.
Before doing anything under the
bonnet, you must switch off the ignition
and verify that the READY
lamp in the
instrument panel is off - risk of serious
injury!
Recommendations
Page 357 of 376
31Comfort
Boot fi ttings
1.
Rear parcel shelf
It can be removed to allow large objects
to be carried.
2.
Bag hooks
3.
Retaining straps
These are provided to stow a warning
triangle.
4.
Removable boot floor
Lift the floor using its grip and follow
the guides.
Page 358 of 376

When immobilising the vehicle, with the
Hybrid4 system active, you must place
the gear selector in neutral N
.
Before carrying out any work in the
engine compartment, check that the
gear selector is in position N
, that the
parking brake is applied and that the
READY
lamp is off before switching off
the Hybrid4 system.
Six-speed electronic gearbox which offers a
choice between two operating modes:
- automated
mode for automatic control of
the gears by the gearbox,
- manual
mode for sequential gear changing
by the driver.
In automated mode, it is possible to change
gear manually by using the steering mounted
control paddles as desired, when overtaking,
for example.
Electronic gearbox (ETG6)
R.
Reverse
)
With your foot on the brake, lift the selector
and move it for wards.
N.
Neutral.
)
With your foot on the brake, select this
position to start.
A.
Automated mode.
)
Move the selector backwards to select
this mode.
M.
Manual mode with sequential gear changing.
)
Lift the selector, then move it backwards
to select this mode, then use the steering
mounted control paddles to change gear.
Gear selector
+.
Change up paddle to the right of the
steering wheel.
)
Press the back of the "+"
steering mounted
paddle to change up a gear.
-.
Change down paddle to the left of the
steering wheel.
)
Press the back of the "-"
steering mounted
paddle to change down a gear.
Steering mounted control paddles
Engagement of reverse gear is
accompanied by an audible signal.
The steering mounted paddles cannot
be used to select neutral or to engage
or disengage reverse gear.
Page 359 of 376

33Driving
N
Neutral
R
Reverse
1, 2, 3, 4, 5, 6
Gears in manual mode
A
This comes on when automated mode is
selected. It goes off on changing to manual
mode.
Displays in the instrument panel
Moving off
)
To start the engine, place the
gear selector in position N
.
)
Release the parking brake by pulling the
control lever, if automatic operation has
been deactivated.
)
Progressively release the brake pedal.
Before leaving the vehicle, place the
gear selector in position N
and then
you must stop the Hybrid4 system by
switching off the ignition ( READY
lamp
off).
)
Place your foot on the brake
when a message appears in the
instrument panel screen.
)
Press the brake pedal down fully.
)
Start the Hybrid4 system.
If the Hybrid4 system does not activate:
- If N
is flashing in the instrument
panel, move the gear selector to
position A
then to position N
.
- If the message "Foot on brake" is
displayed, press the brake pedal
firmly.
)
Select a drive mode (position A
or M
) or
reverse (position R
).
For optimum acceleration, for example
when overtaking another vehicle, press
the accelerator pedal firmly past the
point of resistance.
)
After starting the vehicle, select position A
for enter automated mode.
Automated mode
A
appears in the instrument panel
screen.
The gearbox is then operating in auto-active
mode, without any action on the part of the
driver. It continuously selects the most suitable
gear, depending on the:
- style of driving,
- profile of the road.
A
or M1
or R
appears in the
instrument panel screen.
)
If the parking brake is released, the vehicle
moves off.
If the parking brake is applied and
automatic mode is activated, accelerate
progressively.
Page 360 of 376

On sharp acceleration in manual mode,
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.
At very low speed, if reverse gear
is requested, this will only be taken
into account when the vehicle is
immobilised. A warning lamp appears
in the instrument panel screen.
Only engage reverse gear R
when the
vehicle is immobilised with the brake
pedal pressed.
This selective gear change mode enables you
to overtake, for example, while still remaining in
automated mode.
)
Operate the +
or -
steering mounted control
paddle.
The gearbox engages the gear requested if the
engine speed permits. A
is still displayed in the
instrument panel.
Manual mode
)
When the vehicle has moved off, select
position M
to change to manual mode.
)
Operate the +
or -
steering mounted control
paddles.
The gear change commands are only carried
out if the engine speed permits. The internal
combustion engine is still running.
It is not necessary to release the accelerator
during gear changes.
When braking or slowing down, the gearbox
changes down automatically to permit
acceleration in the correct gear.
Manual gear changing
A
disappears and the
gears engaged M1...M6
appear successively in the
instrument panel screen. After a few moments without any action on
the controls, the gearbox resumes automatic
control of the gears.