CITROEN DS3 Handbook page 121

Going into engine START mode
The "EcO" warning lamp goes off
and the engine starts:
- with a manual gearbox, when you
depress the clutch pedal,
- with a 5-speed or 6-speed electronic
gearbox:
● gear lever in position A or M, when you
release the brake pedal,
● or gear lever in position N and the brake
pedal released, when you move the gear
lever to position A or M,
● or when you engage reverse gear.
With a manual gearbox in STOP
mode, if you engage a gear without
fully depressing the clutch pedal, a
message is displayed asking you to
fully depress the clutch pedal so that
the engine can restart.
Special cases: START invoked
automatically
For reasons of safety and for your comfort,
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 7 mph
(11 km/h) with the electronic gearbox
system,
- some special conditions (battery charge,
engine temperature, braking assistance,
ambient temperature...) where the engine is
needed for control of a system.
The "EcO" warning lamp flashes for
a 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 a message in the
screen.
If the system has been deactivated
in STOP mode, the engine restarts
immediately.
119
Driving