There are numerous reasons why a vehicle won't start. If it's related to the battery, the starter will generally not crank the engine. This is the telltale "click, click, click" you hear when you turn the key or push the start button that lasts for about 10 seconds. The battery voltage and charging information in the Driver Information Center (DIC) can also make you aware if the alternator is not charging the battery properly, or if a loose battery or starter cable is causing a problem.