Starting Using Another Battery - CITROËN DS3 Handbook

Starting using another
battery
When the battery on your vehicle is discharged,
the engine can be started using a slave battery
(external or on another vehicle) and jump leads.
First check that the slave battery has a nominal
voltage of 12 V and a capacity at least equal to
that of the discharged battery.
Do not try to start the engine by connecting a
battery charger.
Do not disconnect the (+) terminal when the
engine is running.
F Connect the red cable to the positive
terminal (+) of the flat battery A, then to the
positive terminal (+) of the slave battery B.
F Connect one end of the green or black
cable to the negative terminal (-) of the
slave battery B (or earth point on the other
vehicle).
F Connect the other end of the green or black
cable to the negative terminal c
(or the engine mounting) of the broken-
down vehicle.
F Start the engine of the other vehicle and
allow it to run for a few minutes.
F Operate the starter of the broken-down
vehicle and let the engine run.
If the engine does not start immediately,
switch off the ignition and wait a few
moments before trying again.
F Wait until the engine returns to idle, then
disconnect the jump leads in reverse order.
Some functions are not available if the
battery is not sufficiently charged.