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In the event of a breakdown -> 12 V battery for Your Peugeot 308 4 Door Second Genration (2014-2020)

In the event of a breakdown  
F Remove the plastic cover to access the the  
12 V battery  
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 PEUGEOT dealer or a qualified  
workshop.  
(+) terminal.  
Procedure for starting the engine using another  
The battery (-) terminal is not accessible. A  
remote earth point is located on the engine  
mounting.  
battery or charging a discharged battery.  
General points  
Starting using another  
battery  
Lead-acid starter batteries  
When your vehicle's battery is flat, the engine  
can be started using a backup battery (external  
or from another vehicle) and jump leads or a  
battery booster.  
Before doing any work  
Immobilise the vehicle: apply the parking  
brake, put the gearbox in neutral, then  
switch off the ignition.  
Check that all electrical equipment is  
switched off.  
Batteries contain harmful substances  
such as sulphuric acid and lead.  
They must be disposed of in accordance  
with regulations and must not, in any  
circumstances, be discarded with  
household waste.  
Take used remote control batteries and  
vehicle batteries to a special collection  
point.  
Never try to start the engine by connecting  
a battery charger.  
Never use a 24 V or higher battery  
booster.  
First check 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 the electrical consumers  
on both vehicles (audio system, wipers,  
lighting, etc.).  
Make sure that the jump leads are not  
close to moving parts of the engine (fan,  
belts, etc.).  
Access to the battery  
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, so as to avoid the risk of explosion  
or fire.  
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Wash your hands afterwards.  
The battery is located under the bonnet.  
To access it:  
F Open the bonnet using the interior release  
lever, then the exterior safety catch.  
F Secure the bonnet stay.  
Do not disconnect the (+) terminal while  
the engine is running.  
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In the event of a breakdown  
F Start the engine of the vehicle with the  
good battery and leave it running for a few  
minutes.  
Charging the battery using  
a battery charger  
F Operate the starter on the broken down  
vehicle and let the engine run.  
If the engine does not start straight away,  
switch off the ignition and wait a few moments  
before trying again.  
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:  
-
If you use your vehicle essentially for short  
journeys.  
If the vehicle is to be taken off the road for  
several weeks.  
F Wait for it to return to idle.  
F Disconnect the jump lead cables in reverse  
order.  
F Refit the plastic cover to the (+) terminal, if  
your vehicle has one.  
-
Contact a PEUGEOT dealer or a qualified  
workshop.  
F Allow the engine to run for at least  
30 minutes, by driving or with the vehicle  
stationary, so that the battery reaches an  
adequate state of charge.  
If you wish to charge your vehicle's battery  
yourself, use only a charger compatible  
with lead-acid batteries with a nominal  
voltage of 12 V.  
F Lift the plastic cover on the (+) terminal, if  
your vehicle has one.  
F Connect the red cable to the (+) terminal of  
flat battery A (at the metal elbow), then to  
the (+) terminal of backup battery B or the  
booster.  
F Connect one end of the green or black  
cable to the (-) terminal of backup battery  
B or of the booster (or an earth point on the  
other vehicle).  
F Connect the other end of the green or black  
cable to earth point C on the broken down  
vehicle.  
Some functions, including Stop & Start,  
are not available if the battery is not  
sufficiently charged.  
Follow the instructions provided by the  
manufacturer of the charger.  
Never reverse polarities.  
It is not necessary to disconnect the  
battery.  
F Switch off the ignition.  
F Switch off all electrical consumers (audio  
system, lighting, wipers, etc.).  
216  
In the event of a breakdown  
Disconnecting the battery  
In order to maintain an adequate state  
of charge for starting the engine, it is  
recommended that the battery be disconnected  
if the vehicle is taken out of service for a long  
period.  
Before disconnecting the battery:  
F close all openings (doors, boot, windows,  
roof),  
If this label is present, it is essential to  
use only a 12 V charger to avoid causing  
irreversible damage to the electrical  
components related to the Stop & Start  
system.  
F switch off all electrical consumers (audio  
system, wipers, lighting, etc.).  
F switch off the ignition and wait for four  
minutes.  
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 check that the internal  
components have not been damaged and  
that the container has not cracked, which  
would mean a risk of toxic and corrosive  
acid leaking.  
At the battery, detach the (+) terminal only.  
F Switch off charger B before connecting the  
cables to the battery, so as to avoid any  
dangerous sparks.  
F Ensure that the charger cables are in good  
condition.  
Quick-release terminal clamp  
Disconnecting the (+) terminal  
F Raise the plastic cover, if your vehicle has  
one, on the (+) terminal.  
F Connect the cables of charger B as follows:  
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 of immobilisation of the vehicle,  
a period which depends on the exterior  
temperature and the state of charge of the  
battery (up to about 8 hours).  
-
The (+) red cable to the (+) terminal of the  
battery A.  
8
-
The (-) black cable to the earth point C on  
the vehicle.  
F At the end of the charging operation, switch  
off charger B before disconnecting the  
cables from battery A.  
F Raise the lever A fully to release the  
clamp B.  
F Remove the clamp B by lifting it off.  
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