CITROËN C4 Handbook page 191

Going into engine START mode
The "ECO" warning lamp goes off
and the engine starts automatically:
- with a manual gearbox, when you fully
depress the clutch pedal,
- with an automatic gearbox:
● gear selector in position D or M, when
you release the brake pedal,
● or gear selector in position N and brake
pedal released, when you place the gear
selector in position D or M,
● or when you engage reverse gear.
With a manual gearbox in STOP mode,
if a gear is engaged without fully
depressing the clutch pedal, a warning
lamp comes on or an alert message
is displayed asking you to depress the
clutch pedal to restart the engine.
Special cases: START invoked
automatically
For safety reasons or to ensure smooth
operation, START mode is invoked
automatically when:
- you open the driver's door,
- you unfasten the driver's seat belt,
- the speed of the vehicle exceeds 15 mph
(25 km/h) with a manual gearbox (3 km/h
(2 mph) with PureTech 130 petrol and
BlueHDi Diesel 115 and 120 versions) or
2 mph (3 km/h) with an automatic gearbox,
- the electric parking brake is being applied,
- 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 few seconds, then goes
off.
This operation is perfectly normal.
Deactivation
At any time, press the "ECO OFF" switch to
deactivate the system.
This is confirmed by the switch warning lamp
coming on accompanied by the display of a
message.
If the system has been deactivated
in STOP mode, the engine restarts
immediately.
Driving
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