How To Know If You Have A Subaru Dead Battery

If you think your battery is on its last legs, here’s what to watch out for.

Internal corrosion

Internal corrosion is caused by battery acid leaking out of the battery case. This can cause damage to your car’s electrical system and other electrical components. Suppose you notice corrosion on your car’s wires and cables. In that case, it’s a sign that internal corrosion has occurred, which means you must replace your dead battery immediately before it causes permanent damage.

Strange Odors

If you smell something that resembles rotten eggs, this is a sign of sulfur poisoning. A battery can release hydrogen sulfide gas when it can’t be recharged, which is one of the most common types of battery failure. If you notice this odor on the top of your car or near the terminals, there is likely corrosion building up in your system.

This type of smell can also indicate that parts within your system break down and release gases into your engine bay. If this happens, it could cause significant damage to internal components and cause problems with how well other parts work together later on down the road.

Another odor associated with Subaru batteries dying early is burning plastic scents. This usually happens when there has been some electrical issue, such as overcharging or overdischarging due to improper maintenance by someone who didn’t know what they were doing when installing/repairing them.

Slow Engine Cranking

The engine may not turn over at all, or it may turn over very slowly. In either case, if you have a Subaru dead battery, you will need to jump-start the car. The engine may turn over very quickly but not start. This is because the starter needs more power than a dead battery. After jumping-starting your Subaru and letting it run for a while, this problem should resolve as the electrical system restores itself to regular operation by recharging its capacitors with new electricity from your car’s alternator (AC). However, even if you don’t get lucky enough that your vehicle starts after jumping-start, other troubleshooting options are available to help you figure out what went wrong with your Subaru Dead Battery diagnosis.

The Battery is Over Three Years Old

The life of your car battery will vary depending on several factors, including:

  • how long has it been since you last replaced the battery (newer batteries last longer)
  • how often you drive your Subaru and for how long (the more frequently you go, the shorter the battery’s lifespan)
  • the climate in which you live (cold temperatures decrease battery life)

Learn What to Watch Out for if You Think Your Battery is on its Last Legs

If you think your Subaru’s battery is on its last legs, there are a few things to watch. The first is whether or not your car will start. If it doesn’t, check the fuses, and if that doesn’t work, it might be time for a new battery! If you have strange smells from under the hood, especially sulfuric odors, this can also indicate that your battery is failing. Another indication of a weak or dying battery could be slow engine cranking or difficulty starting. Finally, if you’ve had your Subaru since new and the original equipment battery has been in service for over three years—time to replace it!

If you think your car’s battery is failing, there are plenty of things to look out for. Keep an eye on your vehicle’s performance and check its battery periodically. If these signs become apparent, it’s time to replace the battery before it fails.