Renault Megane Manual page 195

BATTERY: failure
Starting the vehicle using the
battery from another vehicle
Proceed as follows when starting
your vehicle from another vehicle's
battery:
Obtain suitable jump leads (large)
from a RENAULT Dealer or, if you
already have jump leads, ensure
that they are in perfect condition.
The two batteries must have an
identical voltage: 12 volts. The
battery supplying
should have a capacity (amp-hours,
Ah) which is at least the same as
that of the discharged battery.
An iced-up battery must be thawed
out before current is supplied to it.
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.
Start the engine of the vehicle
supplying the current and run it at
an intermediate engine speed.
5.22
(continued)
the current
Secure the positive cable (+) A to
the (+) terminal 1 of the discharged
battery, then to the (+) terminal 2 of
the battery supplying the current.
Secure negative cable (–) B to
terminal (–) 3 of the battery
supplying the current then to
terminal (–) 4 of the discharged
battery.
1
4
B
A
3
2
Check that there is no contact
between cables A and B and that
cable A (+) is not touching any
metal parts on the
supplying the current.
Start the engine as you would
normally. As soon as it starts,
disconnect cables A and B in
reverse order (4-3-2-1).
vehicle