Answer: If you turn your key in the ignition and nothing happens, your engine doesn’t start, you have a problem with your battery or your starting system. You will need to have your battery jumped and have your starting system checked. Another sign of a weak battery or starting and charging system is dim headlights. If your headlights are not bright, you should check the voltage of your battery. Every 3 months or 3,000 miles you should have your battery checked. Also, whenever you are having your battery checked or replaced, always check your starting and charging systems to ensure they are working properly.