CITROEN C4 Handbook page 195

the booster (or to an earth point on the assisting
vehicle).
► Connect the other end of the green or black
cable to the (-) terminal of flat battery A.
► Start the engine on the assisting vehicle and
leave it running for a few minutes.
► Operate the starter on 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.
► Wait for it to return to idle.
► Disconnect the jump leads in reverse order.
► Refit the plastic cover to the (+) terminal, if
the vehicle has one.
► Allow the engine to run for at least
30 minutes, with the vehicle stationary, so that
the battery reaches an adequate state of charge.
Driving immediately without having
reached a sufficient level of charge may
affect some of the vehicle's functions (e.g.
Stop & Start).
Charging the battery using a
battery charger
For optimum service life of the battery, it is
essential to maintain an adequate state of
charge.
In some circumstances, it may be necessary to
charge the battery:
– When using the vehicle mainly for short
journeys.
– If the vehicle is to be taken off the road for
several weeks.
Contact a CITROËN dealer or a qualified
workshop.
To charge the vehicle's battery yourself,
use only a charger compatible with
lead-acid batteries with a nominal voltage of
12 V.
Follow the instructions provided by the
manufacturer of the charger.
Never reverse polarities.
It is not necessary to disconnect the
battery.
► Switch the ignition off.
► Switch off all electrical consumers (audio
system, lighting, wipers, etc.).
► Switch off charger B before connecting
the cables to the battery, so as to avoid any
dangerous sparks.
In the event of a breakdown
► Ensure that the charger cables are in good
condition.
► Lift the plastic cover on the (+) terminal, if the
vehicle has one.
► Connect the cables of charger B as follows:
• the positive (+) red cable to the (+) terminal
of battery A.
• the negative (-) black cable to the (-) terminal
of battery A.
► At the end of the charging operation, switch
off charger B before disconnecting the cables
from battery A.
If this label is present, use only a 12 V
charger to avoid causing irreversible
damage to the electrical components.
Disconnecting/reconnecting
the battery
In order to maintain an adequate state of
charge for starting the engine, we recommend
disconnecting the battery if the vehicle is to be
unused for an extended period.
Before disconnecting the battery:
► Close all openings (doors, boot, windows,
roof).
8
24V
12V
193