This is the most likely electrical problem you will experience in your car. If the car won’t start, there is a good chance you have a problem with the battery, the alternator, or the starter. If you turn the key and nothing happens, check to see if the interior lights came on when you opened the door. If the lights aren’t working and the car won’t start, the problem is likely a dead battery. If the lights are on but nothing happens when you turn the key, the problem is likely your alternator. If you hear a clicking sound when you turn the key, the problem is likely the starter. All of these problems require a visit to the auto repair shop for final diagnosis and repair.
Inspect the battery from time to time to look for corrosion stains or buildup around the terminal. Both can be signs that the battery is leaking, experiencing a problem, or nearing the end of its life. Be careful if you notice any signs of damage or leakage as the contents of the battery are corrosive and they will damage bare skin.