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vehicle again. Allow another 5 minutes for charging before
attempting to start the disabled vehicle. If this does not work
after a few tries, you may need to have the vehicle towed or
the battery replaced.
7.
Remove the jumper cables once the vehicle starts. Do this in
the reverse of the order in which they were attached, and don't
let any of the cables or clamps touch each other (or dangle
into the engine compartment)
•
Disconnect the black clamp from the grounded metal on
the dead vehicle
•
Disconnect the black clamp from the negative (-) terminal of
the good battery
•
Disconnect the red clamp from the positive (+) terminal of
the good battery
•
Disconnect the red clamp from the positive (+) terminal of
the dead battery
Replace any positive (+) red post protective covers if applicable
(You have had to remove or open these in the beginning)
These covers help prevent accidental short circuiting of the
battery.
8.
Keep the recently-disabled vehicle's engine running. Run the
vehicle above idle (slightly revved up with your foot on the
accelerator). This should give the battery enough charge to
start the vehicle again. If it does not, you probably have a dead
battery or a dying alternator.
Improper jumpstarting procedures can result in battery
explosion and acid burn hazard.
Loosely connected battery cables could damage the electronic
control units.
To disconnect battery terminals, wait for at least 2 minutes to
allow discharge of high voltage or it could lead to personal
injury.
While disconnecting, always disconnect the -VE terminal first
and while connecting, always connect the -VE terminal last.
Do not connect battery terminals with opposite polarity, it will
lead to alternator failure.
Towing a vehicle to start could be dangerous. The vehicle being
towed could surge forward when the engine starts, causing the
tow vehicles to collide, injuring the occupants.
Modern vehicles with electronic management systems should
not be jumpstarted without ‘protected’ jumpstarter leads. It is
necessary to refer to the owner's handbook for jumpstarting
procedures for such vehicles.
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