If your car won’t start after being jump started, its battery might be dead or low. Make sure the jumper cables don’t touch any moving parts of the engine before letting it idle for 30-60 seconds before trying again.
Park the working vehicle close enough to the dead vehicle so that its jumper cables can access both batteries. Switch off both engines and electronics before you connect.
1. Locate the Dead Battery
An unexpected battery failure need not spell disaster; with some help and jumper cables from friends or acquaintances you can jump start your car while also charging up your own battery at the same time.
Make sure that both vehicles are parked close enough together for you to access both batteries easily, with sufficient slack in your jumper cables, as well as turning off all electronics in both cars in order to prevent an electrical surge from being generated by jumping them together.
Locate an unconducive metal ground on the vehicle with the dead battery and attach one end of your black jumper cable – typically a bolt head sticking up from its body – directly. Do not touch anything metal or any red clamp that might spark and start a fire under the hood!
2. Locate the Good Battery
Car batteries often die unexpectedly and leaving drivers stranded with no way to jump start them. It can be frustrating and costly when this occurs; but learning how to jump start your own vehicle could save you both hassle and costs by learning how to do so on your own.
Start by parking the working vehicle close to the one needing a jump, positioning them nose-to-nose but without touching. Place both vehicles into park or neutral, engage their parking brakes, and turn off their ignitions before opening both hoods to locate each battery’s positive terminal with an “+” sign and its negative terminal with a “-“.
3. Locate the Battery Terminals
Typically, battery terminals can be found in the engine bay of your vehicle. For additional help on this subject, consult with your owner’s manual.
Positive terminals are typically indicated with a plus symbol (+), sometimes covered with plastic caps; negative terminals typically feature black color. Red and black cable clamps connect with terminals to make it easy to identify which ends belong on each car.
Start with the car that has a dead battery. Remove and set aside the black clip from the negative terminal grounding point (bare metal), as this could create a short and potentially cause irreparable damage to both vehicles. DO NOT touch or move positive terminal yet as accidental contact could create an electrical short that causes irreparable harm to both cars.
4. Connect the Jumper Cables
Jumper cables (sometimes called booster cables) transfer electricity between vehicles with functioning batteries and those that won’t start due to dead batteries. When connecting jumper cables, be mindful that their red and black ends do not touch each other or any bare metal parts on either battery or vehicle.
Park the vehicle with working engine in close proximity to that which requires a jump, lower both hoods, and connect red clamp to positive terminal of dead battery, black clamp to negative terminal of working battery and final black clamp on an unpainted metal piece that won’t fall off chassis/engine of dead vehicle.
5. Start the Car
Starting your car can be risky business; improper execution could result in serious injuries or death. If you don’t feel qualified enough to perform this task on your own, seek assistance from someone more qualified!
Safely engage both vehicle’s parking brakes. Open both hoods to locate batteries. Attach one end of a red positive jumper cable to the dead battery’s positive terminal while connecting its other end to that on the working car.
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Connect the other end of the black negative jumper cable to an engine or body area on the helper car that is distant from its battery, in order to reduce any chance of hydrogen gas produced during charging of batteries igniting and potentially igniting an explosion. Start the working car first, allowing it to run for approximately 30 seconds before trying to start up the dead vehicle.