2009-2016 Renault Megane SUV Practical advice -> Battery: troubleshooting User Manual
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Practical advice -> Battery: troubleshooting for Your Renault Megane SUV Third Generation (2009-2016)

Battery: troubleshooting (1/2)  
to avoid all risk of sparks:  
connecting a battery charger  
– Ensure that any electrical consumers  
(courtesy lights, etc.) are switched  
off before disconnecting or recon-  
necting the battery.  
the battery charger must be com-  
patible with a battery with nominal  
voltage of 12 volts.  
Do not disconnect the battery when the  
engine is running. Follow the instruc-  
tions given by the manufacturer of  
the battery charger you are using.  
– When charging, stop the charger  
before connecting or disconnecting  
the battery.  
– Do not place metal objects on the  
battery to avoid creating a short cir-  
cuit between the terminals.  
– Always wait at least one minute after  
the engine has been switched off  
before disconnecting a battery.  
Handle the battery with care  
as it contains sulphuric acid,  
which must not come into  
contact with eyes or skin. If  
it does, wash the affected area with  
plenty of cold water. If necessary,  
consult a doctor.  
– Make sure that you reconnect the  
battery terminals after refitting.  
Ensure that naked flames, red hot  
objects and sparks do not come into  
contact with the battery as there is a  
risk of explosion.  
Special procedures may be  
required to charge some  
batteries. Contact your ap-  
proved dealer.  
The engine may be hot when car-  
rying out operations in close prox-  
imity. In addition, the engine cooling  
fan can come on at any moment.  
Avoid all risk of sparks which may  
cause an immediate explosion, and  
charge the battery in a well-venti-  
lated area. Risk of serious injury.  
Risk of injury.  
5.25  
Battery: troubleshooting (2/2)  
starting the vehicle using the  
battery from another vehicle  
1
2
5
If you have to use the battery from an-  
other vehicle to start, obtain suitable  
jump leads (with a large cross section)  
from an approved dealer or, if you al-  
ready have jump leads, ensure that  
they are in perfect condition.  
5
B
2
a
the two batteries must have an iden-  
tical nominal voltage of 12 volts. The  
battery supplying the current should  
have a capacity (amp-hours, Ah) which  
is at least the same as that of the dis-  
charged battery.  
4
3
Ensure that there is no risk of contact  
between the two vehicles (risk of short  
circuiting when the positive terminals  
are connected) and that the discharged  
battery is properly connected. Switch  
off your vehicle ignition.  
Attach positive lead A to mounting 1  
attached to (+) terminal 2 then to  
(+) terminal 3 of the battery supplying  
the current.  
Attach the negative lead B to the  
(–) terminal 4 of the battery supplying  
the current, then to the (–) terminal 5  
of the discharged battery.  
Start the engine of the vehicle supply-  
ing the current and run it at an interme-  
diate engine speed.  
Check that there is no con-  
tact between leads A and B  
and that the positive lead A  
is not touching any metal  
Start the engine. As soon as it is run-  
ning, disconnect leads A and B in the  
reverse order ( 5 - 4 - 3 - 2 ).  
parts on the vehicle supplying the  
current.  
Risk of injury and/or damage to the  
vehicle.  
5.26  

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