2015 Citroen DS5 HYBRID4 stop start

11Hybrid4 system
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On starting and when stationary
There is no flow of energy; the Stop & Start alternator-starter stops and restarts the HDi Diesel engine automatically, whatever the operating mode selected.
Energy recovery
During this phase (deceleration, braking, foot off the accelerator, … all modes), the high voltage battery is recharged by the electric motor/generator, then being driven by the rear wheels. You can maximise this energy recovery by taking your foot off the accelerator pedal; deceleration will be less marked than with a conventional vehicle.
100% electric
In all electric running (AUTO or ZEV modes), only the electric ZEV modes), only the electric ZEVmotor drives the vehicle, via the rear wheels, powered by the high voltage battery. The display of " Zero Emission " indicates that the HDi Diesel engine is stopped and the vehicle is producing no CO2.

15Hybrid4 system
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Starting the Hybrid4
system
Activation of the Hybrid4 system
On activation of the Hybrid4 system, the instrument panel lights up, the power indicator needle is placed at position " 0 ". The steering column automatically unlocks (perceptible noise and movement of the steering column). Depending on certain parameters, such as the state of charge of the high voltage battery or the ambient temperature, the Hybrid4 system itself determines whether it is necessary to start the HDi Diesel engine. The mode selector is at the AUTO p o s i t i o n .
In wintry conditions with the engine cold, the Diesel pre-heating warning lamp can stay on for a few seconds; wait until it goes off before releasing the brake pedal.
Starting - switching off the Hybrid4 system
Never leave children alone inside the vehicle when the Hybrid4 system is a c t i v e .
 Place the gear selector at position N .  Insert the electronic key in the reader. or  With Keyless Entry and Starting, simply having the electronic key inside the vehicle is sufficient.
 Press the brake pedal firmly.  Make a single short press (about one second) on the " START/STOP " button.  Maintain pressure on the brake pedal until the RE ADY lamp comes on, signalling RE ADY lamp comes on, signalling RE ADYactivation of the Hybrid4 system, confirmed by an audible signal.
If the Hybrid4 system does not start up:  If N is flashing in the instrument panel, move the gear selector to position A then to position N .  If the " Foot on the brake " is displayed, press the brake pedal
f i r m l y .

17Hybrid4 system
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Switching off the Hybrid4
system
 Immobilise the vehicle.  Place the gear selector in position N .  Make a short press (about one second) on the " START/STOP " button. The Hybrid4 stops: - the RE ADY lamp goes off, RE ADY lamp goes off, RE ADY
- the steering column locks, - the electric parking brake is applied automatically, unless its automatic mode is deactivated.  Check that the parking brake warning lamps are on.  Remove the electronic key from the reader.
Before doing anything under the bonnet, the Hybrid4 must be switched off ( RE ADY lamp off) and the electric RE ADY lamp off) and the electric RE ADYparking brake must be applied.
Check that the RE ADY lamp is off RE ADY lamp is off RE ADYbefore leaving the vehicle. Never leave the electronic key in the vehicle in your absence.
For reasons of safety and theft protection,
do not leave your electronic key in the vehicle, even when you are close to it. It is recommended that you keep it on your person.
Switching the ignition on
With the electronic key in the reader or the Keyless Entry and Starting key inside the vehicle, pressing the " START/STOP " button, with no action on the brake pedal , allows the ignition to be switched on.
 Press the " START/STOP " button, the instrument panel comes on but the Hybrid4 system does not start up.
With the ignition on, the system goes into energy economy mode when necessary to maintain the state of charge of the battery.
 Press this button again to switch off the ignition and so allow the vehicle to be l o c k e d .

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Back-up starting /
emergency switching off
Back-up starting with the Keyless Entry and Starting system
When the electronic key is in the recognition zone and after pressing the " START/STOP " button, the Hybrid4 system does not start up:
 Insert the electronic key in the reader.  Place the gear selector at position N .  Press the brake pedal firmly.  Press the " START/STOP " button. The Hybrid4 starts up; the RE ADY lamp is on. RE ADY lamp is on. RE ADY
Electronic key not recognised with Keyless Entry and Starting
If the electronic key is no longer in the recognition zone when driving or when you (later) request switching off of the hybrid system, a message appears in the instrument panel.
 Press and hold the " START/STOP " button for about 3 seconds if you want to force the hybrid system to switch off.
In the event of an emergency only, the engine can be switched of without any conditions.  To do this, press and hold the " S TA R T/STOP " button for about 3 seconds. In this case the steering column locks as soon as the vehicle stops.
The electronic key must always remain inside the vehicle when in use.
Emergency switching off
Note that restarting will not be possible without the presence of the electronic key in the recognition zone.

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 OFF function
This function prevents the HDi Diesel engine being switched off and so ensures that a comfortable temperature can be maintained in the passenger compartment (air conditioning running continuously). On pressing the ECO OFF switch, the HDi Diesel engine restarts immediately. To return to normal operation, press this switch again. After switching off the ignition, the vehicle will return to normal operation (lamp in the switch off).
* E x c e p t i n ZEV mode, which gives preference to electric running over maintaining a comfortable temperature.
During electric running and when the engine is stopped, the hybrid system manages restarting automatically to maintain the temperature in the passenger compartment * . However, variations in temperature may still be felt in very hot climates. To avoid any discomfort in these conditions you can operate the ECO OFF s w i t c h .

27Hybrid4 system
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200 V high voltage battery
The 200 V high voltage battery is specially made for partial, rapid and frequent charging and discharging. Of Ni-MH (Nickel Metal Hydride) technology, it is located below the boot floor, close to the electric motor.
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 converts 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 preserving a margin for energy recovery when deceleration of going downhill (free energy).
To preserve the service life of the battery, the level of charge never falls below 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 l e v e l .
The battery charging time is very short. A discharged battery (following ZEV running or high load, for example) will quickly return to a state of charge sufficient (around 10 minutes) for full operation of the different hybrid modes.
The battery is not recharged from a mains power supply.

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Car washing machine or tunnel
Some car washing machines or tunnels (where the vehicle is moved for wards on a travelling track) require that the parking brake be "released" during the wash.
With the hybrid system active, RE ADY lamp on, parking brake RE ADY lamp on, parking brake RE ADYreleased: - Place the gear selector at position N . - Switch off the engine (press the START/STOP button). The parking brake is applied automatically and the RE ADYlamp goes off in the instrument panel. - Switch on the ignition again (press the START/STOP button) without your foot on the brake pedal. The RE ADY lamp RE ADY lamp RE ADYremains off. - Release the parking brake using the manual control on the centre console, while keeping your foot on the brake pedal. - Switch off the ignition (press the START/STOP button without
your foot on the brake pedal) checking that the parking brake r e m a i n s r e l e a s e d .
If the HDi Diesel engine was on standby, it then restarts. If the HDi Diesel engine is running, its operation is maintained without time limit.
With the hybrid system active, RE ADY lamp on, parking brake RE ADY lamp on, parking brake RE ADYreleased: - Place the gear selector at position N ( AUTO mode). - Press the brake pedal then the " ECO OFF " b u t t o n .
Car washing machines or tunnels in which the HDi Diesel engine must be switched off. Car washing machines or tunnels in which the HDi Diesel engine must not be switched off.
If possible on your vehicle, deactivate the automatic operation of the electric parking brake in the vehicle systems configuration menu.