M45 Automotive

Alternator Service

Alternators play a considerable role in keeping your car’s power on. If the battery is dead, your vehicle will not be starting but the alternator is what will continually charge your battery, and keeps your car’s electronics functioning while the engine is running. The alternator is driven by a belt that holds the alternator spinning and continually charging the battery. Not long after it goes out, the battery will quickly drain, and you could find yourself on the side of the road. To prevent this from happening, bring your Subaru Outback into M45 if you are experiencing issues with dim lights or your car won’t turn on. We will be able to diagnose quickly if your battery is the problem or if it is indeed the alternator that is faulty.


As far as maintaining your alternator, there isn’t much you need to do. However, the belt that drives it can be changed at regular intervals to ensure this will not create a problem with it. The most significant upside to having a serpentine belt replaced is other aspects of the belt drive will be spared from failing. The water pump is also directed by the serpentine belt and helps to cool the engine.

There are a few signs that the alternator is what is failing and should be looked at. For instance, one of the first signs that the alternator isn’t working as it should is your lights will start diming. It will be noticeable on first starting the vehicle. Another sign you might notice is a weird whining sound under the hood. A quick listen can indicate if the alternator pulley is the issue. Addressing the problem quickly will lessen the chance you find yourself stranded. Bring your Subaru by, and we can do a visual inspection of the items like a slipping belt, problems with the alternator pulley, or wiring issues.

Repair or Replacement

When the alternator does stop working it could be a few different issues. M45 Automotive can diagnose the problem quickly in most cases. When the alternator goes out, the best option is to repair the problem with a new replacement part. It can give you a warranty on the new region, and the reassurance that it will be good for a long time. Replacing the alternator can be a challenge depending on what model Subaru you have.

Another problem that will require repair is if there is a wiring problem associated with the alternator. It can be frayed wires or burnt wires. Sometimes animals, as cute as they are, can find themselves snacking on your car’s wiring. Mice are notorious for finding their way into engine compartments and nibbling on wires. Wiring problems can be identified by one of our professional technicians and correct the problem of your alternator not operating correctly.

If you are experiencing any issues with your Subaru Outbacks charging system, including the alternator, give us a call, we can help. We’ll take care of your Subaru, and make sure you don’t end up stranded on the side of the road because of a faulty alternator or wiring.

If you have any questions or would like to do business with us,
please give us a ring at

(530) 823-7645