battery PEUGEOT 308 2024 Repair Manual

189
Practical information
7Closing
► Lower the bonnet and release it near the end
of its travel.
►

Check the locking.
Because of the presence of electrical
equipment under the bonnet, it is strongly
recommended that exposure to water (rain,
washing, etc.) be limited.
Engine compartment
The engine shown here is an example for
illustrative purposes only.
The locations of the following components may
vary:
–

Air filter
.
–

Engine oil dipstick.
–


Engine oil filler cap.
Petrol engine

Diesel engine

1. Screenwash fluid reservoir
2. Engine coolant reservoir
3. Brake fluid reservoir
4. Battery/Fuses
5. Remote earth point (-)
6. Fusebox
7. Air filter
8. Engine oil filler cap
9. Engine oil dipstick
Diesel fuel system
This system is under very high pressure.
All work must be carried out only by a
PEUGEOT dealer or a qualified workshop
Electric engine

1. Screenwash fluid reservoir
2. Engine coolant reservoir (level only)
3. Brake fluid reservoir
4. Battery/Fuses
5. Remote earth point (-)
6. Fusebox
7. 400
V electrical circuit
8. Emergency circuit-breaker for emergency
services and maintenance technicians
For more information on the Charging system
(Electric), refer to the corresponding section.
Checking levels
Check all of the following levels regularly in
accordance with the Manufacturer's service
schedule. Top them up if required, unless
otherwise indicated.
If a level drops significantly, have the
corresponding system checked by a PEUGEOT
dealer or a qualified workshop.

192
Practical information
Otherwise, have them checked by a PEUGEOT
dealer or a qualified workshop.
Only use products recommended by
PEUGEOT or products of equivalent
quality and specification.
In order to optimise the operation of
components as important as those in the
braking system, PEUGEOT 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 with
special technology and specifications.
Its replacement should be carried out only by
a PEUGEOT 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.
Following prolonged operation of the
vehicle at very low speed or at idle, you
may, in exceptional circumstances, notice
water vapour coming from the exhaust while
accelerating. These emissions have no
impact on the vehicle’s behaviour and the
environment.
New vehicle
During the first few particle filter
regeneration operations, you may notice a
"burning" smell. This is perfectly normal.
Manual gearbox
The gearbox does not require any maintenance (no oil change).
Automatic gearbox
The gearbox does not require any maintenance (no oil change).
Brake pads
Brake wear depends on the style of
driving, particularly in the case of vehicles
used in town, over short distances. It may be

209
In the event of a breakdown
8Model with Full LED 3D lamps

1.Direction indicators (LED)
2. Brake lamps/sidelamps (LED)
3. Sidelamps
(LED)
4. Foglamps (P21W)
5. Reversing lamps (W16W)
Reversing lamps/Foglamps

These bulbs are replaced from outside the rear
bumper.
► Remove the fixing screw(s) from the access
flap located under the bumper using a Torx
screwdriver.
►

Unclip the access flap.
►


T
urn the bulb holder a quarter turn and
remove it.
►

For the foglamp: turn the bulb a quarter turn
and replace it.
►


For the reversing lamp: pull out the bulb and
replace it.
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
PEUGEOT 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
PEUGEOT dealer or a qualified workshop.
PEUGEOT 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 PEUGEOT 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
batteries
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.

210
In the event of a breakdown
Wash your hands afterwards.
Electronic control units/LED
technology headlamps
Never connect the negative jump lead to the
metal part of the electronic control units or at
the back of the headlamps.
Risk of destroying the electronic control units
and/or headlamps!
Connect to the remote earth point provided
for this purpose.
Frozen battery
Never try to charge a frozen battery - risk
of explosion!
If the battery has frozen, have it checked by a
PEUGEOT 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.
Automatic gearbox
Never try to start the engine by pushing
the vehicle.
Electric vehicles
Flat accessory battery
It is no longer possible to start the motor
or recharge the traction battery.
Precautions before working on the
accessory battery
Select mode
P, switch off the ignition, check
that the instrument panel is off and that the
vehicle is not being charged.
Jump-starting another vehicle
Do not use the accessory battery to
jump-start another vehicle or to charge
another vehicle's battery.
Symbols
No sparks or naked flames, no smoking.
Always protect your eyes. Explosive gases can cause blindness and injury.
Keep the vehicle's battery out of the reach
of children.
The vehicle's battery contains sulphuric acid which can make you go blind or
cause severe burns.
For more information, refer to the
handbook.
Explosive gases can be present close to
the battery.
For petrol/Diesel versions
Procedure for starting the engine using another
battery or for charging a discharged battery.
Accessing the battery
The battery is located under the bonnet.


For access to the (+) terminal:
► Release the bonnet by pulling the internal
release lever
, then the external safety catch.
►

Raise the bonnet.
(+)

Positive terminal with a quick-release
terminal.
(-) Negative terminal.
As the battery's negative terminal is not
accessible, a remote earth point is located near
the battery.
Starting using another battery
If the vehicle's battery is flat, the engine can be
started using a backup battery (either external or
from another vehicle) and jump leads or using a
battery booster.
Never start the engine by connecting a
battery charger.
Never use a 24
V or higher battery booster.
Check beforehand that the backup battery
has a nominal voltage of 12
V and a capacity

2 11
In the event of a breakdown
8at least equal to that of the discharged
battery.
The two vehicles must not be in contact with
each other.
Switch off all electricity-consuming equipment
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are well away
from the engine’s moving parts (fan, belt,
etc.).
Do not disconnect the (+) terminal while the
engine is running.


► Lift the plastic cover on the (+) terminal, if the
vehicle has one.
►

Connect the red cable to the (+) terminal of
flat battery

A (at the metal elbow), then to the
(+) terminal of the backup battery
B or of the
booster.
►

Connect one end of the green or black cable
to the (-) terminal of the backup battery

B or of
the booster (or to an earth point on the assisting
vehicle).
► Connect the other end of the green or black
cable to the earth point C .
►

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.
►

W
ait 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.
Consult a PEUGEOT 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.
►

Ensure that the charger cables are in good
condition.

212
In the event of a breakdown
► 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 earth point

C

on the vehicle.
►

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.
24V
12V
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).
►


Switch off all electricity-consuming devices
(audio system, wipers, lamps, etc.). ►


Switch off the ignition and wait for 4
minutes.
After accessing the battery, it is only necessary
to disconnect the (+) terminal.
Quick-release terminal clamp
Disconnecting the (+) terminal


► Depending on equipment, lift the plastic cover
on the (+) terminal.
►

Raise lever

A
fully to release clamp
B
.
►

Remove clamp

B
by lifting it off.
Reconnecting the (+) terminal

► Raise lever A fully.
► Refit open clamp B on the (+) terminal.
►

Push clamp
B fully down.
►

Lower lever

A
to lock clamp B.
►

Depending on equipment, lower the plastic
cover on the

(+) terminal.
Do not force the lever when pressing on
it, as if the clamp is not positioned
correctly, locking will then not be possible.
Start the procedure again.
The Stop & Start system may not be operational during the trip following the
first engine start.
In this case, the system will only be available
again after a continuous period with the
vehicle immobilised, the duration of which
depends on the exterior temperature and the

213
In the event of a breakdown
8state of charge of the battery (up to about 8
hours).
For hybrid versions
Procedure for starting the engine using another
battery or for charging a discharged battery
(12 V or 48 V).
►

Access to the 12
V battery.
For more information on Accessing the battery,
refer to the corresponding section.
►

If necessary
, perform the 12 V battery
disconnection/reconnection procedure.
For more information on Disconnecting/
Reconnecting the battery, refer to the
corresponding section.
►

After reconnecting the 12
V battery, perform
the automatic reset procedures of the electronic
systems and manual reset of some equipment.
For more information on Following
reconnection, refer to the corresponding
section.
Starting using another battery
The hybrid system starts the vehicle, but a 12 V supply is required. There are
several reasons why the vehicle cannot be
started.
If the 12
V battery is flat, the 12 V power supply
can be ensured using a backup battery (either
external or from another vehicle) and jump leads
or using a battery booster or using a battery
charger.
Never use a 24 V or higher battery
booster .
Check beforehand that the backup battery
has a nominal voltage of 12
V and a capacity
at least equal to that of the discharged
battery.
The two vehicles must not be in contact with
each other.
Switch off all electricity-consuming equipment
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are well away
from the engine’s moving parts (fan, belt,
etc.).
Do not disconnect the (+) terminal while the
engine is running.


► Lift the plastic cover on the (+) terminal, if the
vehicle has one.
►

Connect the red cable to the (+) terminal of
flat battery

A (at the metal elbow), then to the
(+) terminal of the backup battery B or of the
booster .
►

Connect one end of the green or black cable
to the (-) terminal of the backup battery

B or of
the booster (or to an earth point on the assisting
vehicle).
►

Connect the other end of the green or black
cable to the earth point


C
.
►

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.
►

W
ait 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.
e-Auto mode).
Charging the 12 V battery using a
battery charger
For optimum service life of the battery, it is
essential to maintain an adequate state of
charge.

214
In the event of a breakdown
In some circumstances, it may be necessary to
charge the battery (e.g. if the vehicle is to be
taken off the road for several weeks)
Consult a PEUGEOT dealer or a qualified
workshop.
The hybrid system is connected to the 12 V network through the DC/DC
converter. Any operation may affect the
overall behaviour of the system.
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.
►

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 earth point

C

on the vehicle.
►

At the end of the charging operation, switch
off charger


B
before disconnecting the cables
from battery
A.
Charging the 48 V battery using a
12 V battery charger
If the start fails, refer to the paragraph "Starting
using another battery" and follow the
recommended procedure.
In case of failure, especially after long storage,
the 48
V battery may be discharged and require
a charging process.
Do not try to charge the hybrid system
directly.
The hybrid system is connected to the 12
V
network through the DC/DC converter. Any
operation may affect the overall behaviour of
the system.
Only use a specific 12 V battery charger
capable of maintaining 13.5 V with a high
level of current 40-50

A
(approx. 600 W).
To charge the vehicle's battery yourself, use
only a charger compatible with lead-acid
batteries with a nominal voltage of 12
V.
Never use a 24
V or higher battery booster.
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 12 V battery, so as to avoid any
dangerous sparks.
►

Ensure that the charger cables are in good
condition.

215
In the event of a breakdown
8► 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 earth point C


on the vehicle.
►

Open the driver's door to wake up the vehicle
(or turn the ignition on without pressing the
brake pedal

).
The hybrid system will automatically start
charging the 48
V battery after 1 minute with
a 12
V power supply higher than 13.5 V. The
current supplied by the battery charger should be
about 30-50A.
When the appropriate energy level is reached in
the 48
V battery, the hybrid system automatically
stops the charging process of the 48
V battery.
The current supplied by the 48
V battery should
be about 10-15

A.
►


At the end of the charging operation, switch
off charger B

before disconnecting the cables
from 12
V battery A.
►

Refit the plastic cover to the (+) terminal, if
the vehicle has one.
►


Operate the starter on the vehicle and let the
engine run.
►


W
ait for it to return to idle.
►

Allow the engine to run for at least
30

minutes, with the vehicle stationary, so that
the 48
V battery reaches an adequate state of
charge.For rechargeable hybrid
versions
The rechargeable hybrid system has two accessory batteries: one at the front and one at
the centre of the vehicle.
Replacing the accessory batteries
Contact a PEUGEOT dealer or a
qualified workshop.
Jump-starting another vehicle
Do not start or jump-start another vehicle
using the vehicle’s accessory batteries.
Accessing the accessory batteries
Front
The front battery is located under the bonnet.

For access to the (+) terminal:
► Release the bonnet by pulling the internal
release lever
, then the external safety catch.
►

Raise the bonnet. (+)

Positive terminal with a quick-release
terminal.
(-) Negative terminal.
As the battery's negative terminal is not
accessible, a remote earth point is located near
the battery.
Central
The central battery is located in the front armrest
storage compartment.
To reach the battery:




► Open the front armrest.
► Unclip the compartment's floor .
(+) Positive terminal, protected by a red plastic
cover (not accessible).
(-) Negative terminal with a black quick-release
connector.
Charging the front battery using a
battery charger
For optimum service life of the front battery, it
is essential to maintain an adequate state of
charge.

216
In the event of a breakdown
In some circumstances, it may be necessary to
charge the front battery:
–
When using the vehicle mainly for short
journeys.
–


If the vehicle is to be taken off the road for
several weeks.
Consult a PEUGEOT

dealer or a qualified
workshop.
To charge the vehicle's front 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.
►

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:
•

Positive (+) red cable to the (+) terminal on
battery

A.
•

Negative (-) black cable to earth point C

on
the vehicle.
►

At the end of the charging operation, switch
off charger B

before disconnecting the cables
from battery A.
Disconnecting/reconnecting the
accessory batteries
Procedure for disconnecting/reconnecting the
accessory batteries in the event of long-term
immobilisation of the vehicle.
Before disconnecting the accessory batteries:
►

Open the driver's door
.
►

Close all other doors.
► Switch off all electrical consumers (audio
system, wipers, lamps, etc.).
►

Switch off the ignition and wait for the
READY

indicator lamp to go out.
►

Observe a waiting time of 4 minutes.
Never reverse the order of the steps for
disconnecting and reconnecting the
accessory batteries - risk of irreversible
damage!
Disconnection
Central battery:
► Disconnect the (-)
terminal using the black
quick-release connector.
Front battery: