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Start the engine of the vehicle with the good battery that is providing help and let it run at idle
speed.
Turn on the ignition of the vehicle with the dead battery. If the engine starts, wait 2to 3minutes
until it runs smoothly before removing the jumper cables as described below ⇒ . If the engine
does not start within about 10seconds, turn off the ignition and wait at least 1minute; then try
again. If the engine still does not start, get professional assistance.
Before removing the jumper cables
Switch off the headlights (if they are on).
In the vehicle with the dead battery, switch on the heater fan and the rear window defroster. This
helps to minimize voltage spikes when the cables are disconnected.
Checklist
With the engine running, remove the jumper cables in reverse order to the way they were
connected.
Disconnect the black (-) cable from the vehicle with the dead battery.
Disconnect the black (-) cable from the other vehicle (vehicle with the good battery).
Disconnect the red (+) cable from the other vehicle (vehicle with the good battery).
Disconnect the red (+) cable from the vehicle with the dead battery.
Close the battery cover.
WARNING
Improper use of jumper cables when jump-starting a vehicle with a dead battery can cause the
battery to explode, leading to serious personal injury. To help reduce the risk of battery explosion:
All work on the batteries or the electrical system in your vehicle can cause serious acid burns,
fires, or electrical shocks. Always read and heed the following WARNINGS and safety precau‐
tions before working on the batteries or the electrical system ⇒Vehicle battery .
Always wear proper eye protection. Never lean over the vehicle battery.
Attach the jumper cables in the correct order: first the positive cable, then the negative cable.
Never connect the negative cable from the vehicle providing starting assistance to parts of the
fuel system or to the brake hoses or brake lines.
Never allow the non-insulated parts of the battery clamps to touch.
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