2023 CITROEN C4 battery replacement

39
Access
2Risk of explosion or leaking of
inflammable liquid or gas!
Do not use in/store in/place in an environment
where the temperature is extremely high or
where the pressure is extremely low due to
very high altitude.
Do not try to burn, crush or cut a used battery.
Reinitialising the remote
control
Following replacement of the battery or in
the event of a fault, it may be necessary to
reinitialise the remote control.
Without Keyless Entry and Start

► Switch the ignition off.
► T urn the key to position 2 (Ignition on) .
►

Immediately press the closed padlock button
for a few seconds. ►


Switch off the ignition and remove the key
from the ignition switch.
The remote control is now fully operational
again.
With Keyless Entry and Start

► Insert the mechanical key (incorporated into
the remote control) into the lock to open the
vehicle.
►

Place the electronic key against the back-up
reader on the steering column and hold it there
until the ignition is switched on.
►


W
ith a manual gearbox, place the gear lever
in neutral then fully depress the clutch pedal.
►

W
ith an automatic gearbox or drive
selector, while in mode

P
, depress the brake
pedal.
►

Switch on the ignition by pressing the
"

START/STOP" button.
If the fault persists after reinitialisation, contact a
CITROËN dealer or a qualified workshop without
delay.
Doors
Opening
From outside
► After unlocking the vehicle or with the
"Keyless Entry and Start" system electronic key
in the recognition zone, pull the door handle.
From inside
► Pull the interior opening control of a door; this
unlocks the vehicle completely .
With selective unlocking activated:
– Opening the driver's door unlocks
the driver's door only (if the vehicle has not
already been completely unlocked).
–

Opening one of the passenger doors
unlocks the rest of the vehicle.

173
Practical information
7AdBlue® (BlueHDi)
An alert is triggered when the reserve level is
reached.
For more information on the Indicators and in
particular the AdBlue range indicators, refer to
the corresponding section.
To avoid the vehicle being immobilised in
accordance with regulations, you must top up the
AdBlue tank.
For more information on AdBlue
® (BlueHDi),
and in particular the supply of AdBlue, refer to
the corresponding section.
Checks
Unless otherwise indicated, check these
components in accordance with the
Manufacturer's service schedule and according
to your engine.
Otherwise, have them checked by a CITROËN
dealer or a qualified workshop.
Only use products recommended by
CITROËN or products of equivalent
quality and specification.
In order to optimise the operation of
components as important as those in the
braking system, CITROËN selects and offers
very specific products.
12 V battery
The battery does not require any maintenance.
Check regularly that the terminals are correctly
tightened (versions without quick-release
terminals) and that the connections are clean.
For more information on the precautions
to take before any work on the 12 V
battery, refer to the corresponding section.
Versions equipped with Stop & Start are
fitted with a 12 V lead-acid battery of
specific technology and specification.
Its replacement should be carried out only by
a CITROËN dealer or a qualified workshop.
Passenger compartment
filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
A clogged passenger compartment filter
can adversely affect air conditioning
system performance and generate
undesirable odours.
Air filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
Oil filter
Change the oil filter each time the engine
oil is changed.
Particle filter (Diesel)
/ The start of clogging of the
particle filter is indicated by the
temporary lighting of this warning lamp,
accompanied by an alert message.
As soon as traffic conditions allow, regenerate
the filter by driving at a speed of at least 37
mph
(60

km/h), with an engine speed above 2,500
rpm, for about 15 minutes (until the warning lamp
goes out).
If it is not possible to reach 37
mph (60 km/h),
leave the engine running at idle for about 15
minutes, then drive with an engine speed above
2,500 rpm for 15 minutes.
Do not switch off the engine until the filter
is fully regenerated; repeated intervals
can degrade the engine oil prematurely.
Regenerating the filter while the vehicle is
stationary is not recommended.

191
In the event of a breakdown
8Reversing lamp/Foglamp
C4 X

Theses bulbs are replaced from outside the rear
bumper.
►
Pass your hand under the bumper
.
►

Depending on version, remove the cover by
turning it a quarter turn to the left.
►


T
urn the bulb holder a quarter turn to the right
and pull it out.
►

T
urn the bulb a quarter turn to the left and
pull it out.
►

Replace the bulb.
When changing the bulb within a few
minutes of switching off the ignition, take
care not to touch the exhaust - risk of burns!
Fuses
Changing a fuse
All work must be carried out only by a
CITROËN dealer or a qualified workshop
The replacement of a fuse by a third party
could cause a serious malfunction of the
vehicle.
Installing electrical accessories
The vehicle's electrical system is
designed to operate with standard or optional
equipment.
Before fitting other electrical equipment
or accessories to your vehicle, contact a
CITROËN dealer or a qualified workshop.
CITROËN accepts no responsibility for
the cost incurred in repairing the vehicle
or for rectifying malfunctions resulting from
the installation of accessories not supplied or
not recommended by CITROËN and not
installed in accordance with its
recommendations, in particular when the
combined power consumption of all of the
additional equipment connected exceeds 10
milliamperes.
12 V battery / Accessory
battery
Lead-acid starter batteries
These batteries contain harmful
substances (sulphuric acid and lead).
They must be disposed of in accordance
with regulations and must never under any
circumstances be discarded with household
waste.
Dispose of used batteries at a designated
collection point.
Protect your eyes and face before
handling the battery.
All operations on the battery must be carried
out in a well ventilated area and away from
naked flames and sources of sparks, to avoid
any risk of explosion or fire.
Wash your hands afterwards.
Frozen battery
Never try to charge a frozen battery - risk
of explosion!
If the battery has frozen, have it checked by a
CITROËN dealer or by a qualified workshop,
who will verify that the internal components
have not been damaged and that the case
has not cracked, which could lead to a risk of
leakage of toxic and corrosive acid.