How to Jump Start a car

    First thing you need would be a jumper cable. If you don't have one, ask a nearby car , a lot of folks carry that cable.  Jump basically is supplying electric power from a good battery to a battery that is discharged or weak. It involves connecting the batteries together by wires , and that 'wire' is called the jumper cable. The key thing is to connect the red clip to the +ve (or RED) of the 2 batteries and Black Clips to the -Ve of the battery or GROUND B olts on the car's body itself.

Please note - in cars where the battery is not kept under the hood (like newer BMWs) the manufacturer usually has a RED Terminal located in the hood where you connect the Red Clip of the cable. See the example here of terminals placed under the hood. 

Please refer your user manual for location of the terminal. Here are the steps :-

1.) Open the hood to your car. Locate the battery. If you aren't sure where to find the battery, your owner's manual should provide instructions or a picture to guide you. Ensure that the donor car is parked close to yours and that it is turned off before you start.

2.)  On the battery there are two post "terminals". One is positive (+), usually red and one is negative (-), usually black.  The positive terminal post (+ or red) should have a plastic cover that opens easily to expose the metal beneath. Keep in mind that when you begin to attach the cables to each component, you want it to be as strong and the clip should clip nicely around the terminals.

3.)  Take a POSITIVE (red) clamp and attach it to the dead car's positive terminal post (+ or red). The clamps should have metal teeth that help them grip the terminal post.

4.)  Take the POSITIVE (red) clamp at the opposite end of the cables and attach it to the positive terminal post (+ or red) of the good, working battery. Their car should still be off!

5.) Next, take the NEGATIVE (black) clamp on that end and attach to the (-) terminal of the good, working battery.

6.) Take the final NEGATIVE (black) clamp and attach it to a non-painted metal surface on the main body of the car that is being jump-started (yours). A good metal surface could be a metal nut or bolt and farther away from the battery is better to allow for solid grounding. See the figure below to get an idea.

7.) At this point, once all of the connections have been secured, start the donor car. After a minute, try to start your car. If it doesn't work, then wait several more minutes and try again. If this doesn't work, stop. Working in reverse order, unhook each of the clamps and remove all connections.

    If the dead car is started, check the battery light on the instrument panel. If it is on, this may mean that the alternator is not charging the battery and the driver should not run the vehicle very long. If this is the case, you might need a new alternator.

    If your car does start, let it run for a few minutes to help charge the battery further. Be sure to drive your car for a minimum of 10-20 minutes before stopping again so the battery can continue to charge. Otherwise,If the car stops soon you might need another jump start. If the battery appears not to hold a charge even after much driving , you might get the battery tested for FREE at a discount parts store.  If you need a new battery please refer here.