There are telltale signs that indicate your car’s battery may need to be replaced. Below are a few red flags to watch out for: If your check engine light comes on If your car is sluggish to start If your fluid levels gets low If the battery case begins to swell If you notice a rotten egg smell If the battery is over 3 years old If you notice any of these signs, make an appointment at your local Reliable Automotive to have your battery inspected immediately. Our professional service staff is ready to assist if you need to replace a car battery.