Answer: If you turn your key in the ignition and nothing happens (your engine won’t start), you have a problem with your battery or your starting system. It will be necessary to have your vehicle jumped and taken to a repair shop to have the battery checked. If the battery is weak, you will need to have it replaced. Another way to ensure your battery is good is to have it checked every 3 months or 3,000 miles, basically whenever you have your oil changed.