Stop & Start - CITROËN DS 4 Handbook

Stop & Start
The Stop & Start system puts the engine temporarily into standby - STOP mode - during stops in the traffic (red lights, traffic jams, or other...).
The engine restarts automatically - START mode - as soon as you want to move off. The restart takes place instantly, quickly and silently.
Perfect for urban use, the Stop & Start system reduces fuel consumption and exhaust emissions as well as the noise level when stationary.
Operation
Going into engine STOP mode
The "ECO" warning lamp comes on in
the instrument panel and the engine
goes into standby automatically:
- with a manual gearbox, at speeds below
12 mph (20 km/h), or vehicle stationary with
PureTech 130 petrol and BlueHDi 115 and
120 Diesel versions, when you put the gear
lever into neutral and release the clutch
pedal,
- with an automatic gearbox, vehicle
stationary, when you press the brake pedal
or place the gear selector in position N.
If your vehicle is fitted with the
system, a time counter calculates
the sum of the periods in STOP
mode during a journey. It resets
itself to zero every time the
ignition is switched on with the key
or the "START/STOP" button.
STOP mode does not affect the
functionality of the vehicle, such as
braking, power steering, for example.
Never refuel with the engine in STOP
mode; you must switch off the ignition
with the key or the "START/STOP"
button.
Special cases: STOP mode
unavailable
STOP mode is not invoked when:
- the vehicle is on a steep slope (up or down),
- the driver's door is open,
- the driver's seat belt is not fastened,
- the vehicle has not exceeded 6 mph (10 km/h)
since the last engine start (using the key or the
"START/STOP" button),
- the electric parking brake is applied or being
applied,
- the engine is needed to maintain a comfortable
temperature in the passenger compartment,
- demisting is active,
- some special conditions (battery charge,
engine temperature, braking assistance,
ambient temperature...) where the engine is
needed to assure control of a system.
In this case, the "ECO" warning lamp
flashes for a few seconds, then goes
off.
This operation is perfectly normal.