![]() ![]() If you take your car, they can easily test the alternator and charging system to confirm whether the battery needs replacement. ![]() They can easily test the battery and tell you if it needs replacing even if it's still starting your car. This can help determine whether it needs replacement.įor a professional opinion, Jano suggests taking your car (or the battery) to a mechanic or to most auto parts stores. If your battery has any cracks, leaks or damage, it should be replaced immediately.Īn inexpensive electronic device called a multimeter can be used to measure the voltage of the battery. Some cars have warning lights that tell you the battery is dead or about to die. Battery or charging system warning lights appear.Dim headlights when a car is running can be a sign of a bad alternator. Dim headlights when the car is off can be a sign of a bad battery. When you turn the key, does the starter motor crank slowly, struggle or hesitate? These are signs the battery needs to be checked. When nothing happens and there are no warning lights on the dashboard when you turn the key, that means the car has a dead battery. Factors like heat, heavy use, and unsecured battery hold-downs can all impact how long a battery lasts. In general, car batteries typically last about 3 to 4 years. ![]() If these are not addressed, the new battery will run down and the car will not start again. There are other causes of a no-start or a dead battery, including problems with the alternator, a short circuit or other electrical issue. You need to test the battery before replacing it. Jumpstarting the car can give you enough charge to get you where you need to go, but it can also mask electrical problems that drain your battery, regardless if it's old or new. When your car won't start, there are several electrical issues that could be the problem. Check for signs that your battery needs to be replaced, like dim headlights or dashboard warnings. ![]()
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