2013 Citroen DS5 HYBRID4 Electric engine

43Hybrid system
Hybrid4 frequently asked questions


ZEV (Zero Emissions Vehicle) mode
QuestionAnswer
Why is it not always possible
for me to put the
vehicle into ZEV (Zero Emissions Vehicle) mode even though the battery is well charged? This situation is temporary.
Certain conditions will occasionally prevent the change to ZEV mode, even if the battery hassufficient charge, such as, for example, very cold conditions, altitude, demisting, high demand for heating or air conditioning, regeneration of the par ticle emissions filter (PEF).
Wh
y do I sometimes see an aler t message "Electric mode not available: PEF regeneration
in progress"? This is an messa
ge relating to the regeneration of the par ticle emissions filter (PEF). This is acompletely normal process that takes place every 240 or 300 miles (400 or 500 km) (or more
frequently in prolonged urban use), as on a conventional HDi vehicle.
This process is not generally noticed by the driver.
On the other hand, in the case of a hybrid, this phenomenon may be noticeable (in urban use)
as temporarily the HDi engine will not stop and this message will be displayed at intervals while
regeneration is in progress.
Wh
y is it not possible for me to put the vehicle
into ZEV mode, even though I had just beenrunning electrically in Auto mode? The mana
gement of ZEV is different from Auto mode.
Changing to ZEV mode is only possible with a battery charge of at least 4 bars, in order to assure sufficient range.
In Auto mode, the system alone manages the conditions for changing temporarily to electric mode, for shorter periods and with a lower state of charge of the battery.
Wh
y is the range in ZEV (Zero Emissions
Vehic le) mode lower when climbing? The vehicle needs more energy when climbing than when running on the level.
So it is better to stay in Auto mode, which will favour operation of the Diesel engine.
Why is it that the system makes me come out o
f
ZEV (Zero Emissions Vehicle) mode; it does notreturn to ZEV automatically when the conditions allow? It is not intended to give pre
ference to ZEV running at any cost, as it is not always the most economical mode.
So the system returns automatically to Auto mode.

45
Hybrid system

Air conditioning
QuestionAnswer

It seems to me that the vehicle runs less on electric when the heating or air conditioning is
operatin
g, is that right?
The demand for heating or air conditioning may require the star ting of the Diesel engine until thedesired level of comfort is attained.
Normal h
ybrid operation is simply put back. The period can be longer under low or very high
ambient temperatures.
It seems to me that when it is ver
y hot and the
air conditioning is working, the vehicle runs on electric for shor ter periods. Is that right? When it is hot, the periods when the Diesel en
gine is put on standby and the vehicle runs onelectric are necessarily restricted in order to limit the difference between the temperature in the
vehicle and the level of comfort selected.
In very hot weather, it is always possible to press the Eco OFF button (which brings the vehicle out of ZEV mode and prevents electric running or the stopping of the engine) to give preference to
temperature control (keeps the air conditioning running).

Special Hybrid4 features
QuestionAnswer
Can I tow with m
y hybrid vehicle and how much? A Hybrid4 vehicle can tow between 500 kg and 800 kg (see the "Towing" section).
This allows a jet ski or two-wheeler on a trailer to be towed, for example.
The "technical" reason for the limit is related to maintaining adequate cooling capacity for the internal combustion engine as well as the hybrid components that are also cooled by the engine's cooling system.
Wh
y does engine braking seem so strong? When you take your foot off the accelerator, the engine braking results mainly from the energyrecovery by the electric motor.
This leads to a higher level of deceleration than a conventional vehicle and so allows the recoveryof free energy.

ECO OFF switch
This function prevents the Diesel engine
being switched off and so ensures that a comfor table temperature can be maintained in
the passenger compar tment (air conditioningrunning continuously).On pressing the switch, the engine restar ts
immediately.
To return to normal operation, press the switch
again.
After switching off the ignition, the vehicle will return to normal operation (lamp in the switch off).

*

Except in ZEV mode, which favours electric
running over assuring a comfortable
temperature.
During electric running and when the engine is
stopped, the hybrid system manages restarting
automatically to assure comfor t levels in the
passenger compartment * .
However, variations in temperature may still be felt in very hot climates. To avoid anydiscomfor t in these conditions you can operate
the ECO OFF switch.

47Hybrid system









































Eco-driving
Eco-driving is a range of everyday practices that allow the motorist to optimise their fuel consumption and CO2 emissions.
Eco-driving suited to your
Hybrid4 vehicle
Use gear selector position A , as thisoptimises gear changes to suit the circumstances, and the AUTOmode of theHybrid4 mode selector.When moving off, accelerate normally up tothe desired speed ( POWER
zone between20 and 40 %). At steady speeds, drive gently with smallmovements of the accelerator pedal (ECOor CHARGEzone), run in electric mode as oftenas possible when driving at low speed. Anticipate the need to slow down and useengine braking ( CHARGE
zone), so as to make use of free energy recovery while keeping light pressure on the accelerator pedal.

Before moving off, if the passenger compartment is too warm, ventilate it byopening the windows and air vents beforeusing the air conditioning.
Above 30 mph (50 km/h), close the windowsand leave the air vents open. Remember to make use of equipment that can help keep the temperature in the passenger compar tment down (sun roof andwindow blinds...).Switch off the air conditioning, unless it has automatic digital regulation, as soon as the desired temperature is attained.Switch off the demisting and defrostingcontrols, if not automatic.Switch off the heated seat as soon as possible.
Switch off the headlamps and front foglampswhen the level of light does not require their use.

Avoid running the Diesel engine when stationary, par ticularly in winter; your vehiclewill warm up much faster while driving.

As a passenger, if you avoid connecting your multimedia devices (film, music, video game...), you will contribute towards limitingthe consumption of electrical energy, and soof fuel.
Disconnect your por table devices beforeleaving the vehicle.
Control the use of your electrical equipment

200 V high voltage battery
The 200 V high voltage battery cannot berecharged from a mains supply.
The battery is Ni-MH (Nickel Metal Hydride) and is located below the boot floor, close to the electric motor.

Charging


The battery is charged when the vehicle
decelerates, the electric motor then becomes
a
generator and conver ts kinetic energy intoelectrical energy (except if the speed of the
vehicle is above 70 mph (120 km/h)).
The battery is not recharged from a mains
supply.
The battery may also be charged automatically
when required b
y the Stop & Start system of
the Diesel engine.
This recover
y allows the use of "free" energy.
The battery charging time is very shor t and iscontinuous.
A discharged battery (following ZEV running or high load, for example) will quickly return to astate of charge sufficient for full operation of the
different hybrid modes.
The charging takes place automaticallywhen driving.
The energy recovery can be faster during deceleration.
The average state of charge is 4 to 5 bars, sopreserving a margin for energy recovery when
deceleration of going downhill (free energy).
To preser ve the ser vice life of thebattery, the level of charge never fallsbelow 20 %, even if a level of 0 bars is displayed 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.

Instrument panel
1.
Energy consumption / generation indicator (available power as a percentage).
For more information refer to the "H
ybrid
system" section.2. Fuel gauge.3.Engine coolant temperature gauge. 4.
Speedometer (mph or km/h).5.
Cruise control or speed limiter
settings.A
.Main lighting and controls dimmer.
B.- Successive shor t presses: under-inflation
detection, recall servicin
g information, alert
log.
- Long press: reset the function selected to
zero (ser vice indicator or trip recorder). 6
. Gear engaged.
7.Instrument panel screen: electrical flow,
trip recorder, aler t messa
ges or state of functions (e.g.: oil pressure, battery, door open, ...), trip computer, media, satellite
navigation.8. Digital speedometer (mph or km/h). 9.Ready lamp: indicates that the vehicle is
ready to drive.
Dials and screens
Control buttons

61Monitoring



Rear foglamps

fixed. The rear foglamps are switched on. Turn the ring on the stalk rear wards to switch off the
rear foglamps.
Warning / indicator lampStateCauseAction / Observations



Diesel engine pre-heating fixed. The STA R T/STOP
switch has been pressed (ignition on). Wait until the warning lamp goes off before star ting.
The period of illumination of the warning lamp is
determined by the ambient conditions (up to about
thirty seconds in extreme conditions).
If the engine does not star t, switch the ignition off and
then on, wait until the warning lamp goes off again,
then start the engine.

Electric parking brake
fixed. The electric parking brake is applied. Release the electric parking brake to switch off the
warning lamp: with your foot on the brake pedal, pull
the electric parking brake control lever.

Obser ve the safety recommendations.
For more information on the electric parking brake,
refer to the corresponding section.

Deactivation of the automatic functions of the electric parkingbrake

fixed. The "automatic application" (on switching off the engine) and
"automatic release" functions aredeactivated or faulty.
Activate the function (according to country) via the
vehicle configuration menu or contact a CITROËN
dealer or a qualified workshop if automatic
application / release is not possible.
The parking brake can be released manually using the emergency release procedure.
For more information on the electric parking brake,
refer to the corresponding section.

With the hybrid system active or when the vehicle is being driven, illumination of one of the following warning lamps indicates a fault which requires action on the par t of the driver.
Any fault resulting in the illumination of a warning lamp must be investigated further by reading the associated message in the instrument panel screen.
If you encounter any problems, contact a CITROËN dealer or a qualified workshop.
Warning / indicator lampStateCauseAction / Observations



STOPfixed, associated with another warning lamp, accompanied by an audible signal and a message in the screen.It is associated with a punctured wheel,
the brakin
g system, the power steering,
the engine oil pressure, the enginecoolant temperature, the hybrid system
or a major electrical fault.Stop as soon as it is safe to do so as the en
gine may cut out.
Park, switch off the ignition and call a CITROËN
dealer or a qualified workshop.



Serviceon temporarily. A minor fault has occurred for which
there is no specific warning lamp. Identify the fault by reading the message shown in the screen, such as, for example:
- the closing of the doors, boot or bonnet,
- the engine oil level,
- the screenwash level,
- the remote control battery,
- the tyre pressures,
- saturation of the par ticle emission filter (Diesel). - ...For any other faults, contact a CITROËN dealer or a
qualified workshop.
fixed. A major fault has occurred for which
there is no specific warning lamp. Identify the fault by reading the message shown on the screen and contact a CITROËN dealer or a yyg g
qualified workshop.
PEF: particle emissions filter,Diesel
fixed, associated
temporarily with a message on the risk of
blockage of the PEF.Thi
s indicates the start of saturation
of the par ticle emissions filter. As soon as traffic conditions allow, regenerate the
filter by driving at a speed of at least 35 mph (60 km/h)
until the ser vice warning lamp goes off.
fixed.This indicates the low level in theDiesel additive reservoir. Have the level topped up by a CITROËN dealer or a
qualified workshop as soon as possible.