How do I know if my Subaru Outback alternator is bad?

Signs of a Bad Alternator in a Subaru Outback
If you suspect that your Subaru Outback’s alternator may be failing, there are several signs to look out for:
1. Dashboard Warning Lights: One common indicator of a bad alternator is the appearance of the charge warning light on the dashboard while driving. This light resembles a car battery and signifies that the charging system may have a problem and is not functioning as it should.
2. Electrical Issues: A failing alternator can cause various electrical problems in your vehicle, such as randomly flashing lights, honking horns, or other unexpected behavior from electronic devices. These issues are often referred to as “electrical gremlins” and can be a sign of alternator trouble.
3. Battery Performance: If your Subaru Outback’s battery is not being charged properly by the alternator, you may experience slow cranking of the engine or difficulty starting the vehicle. This slow crank is typically the first symptom of a dying battery, which can be caused by an underperforming alternator.
4. Voltage Readings: You can conduct a simple test using a digital volt-ohm meter (DVOM) to check the voltage output of the alternator. With the engine off and the ignition key in the “Off” position, the battery voltage should read above 12.3 volts. When the engine is running, the voltage at the battery terminals should be at least a volt higher than when the engine is off, typically in the range of 14+ volts.
It’s important to note that these symptoms can also be indicative of other issues, so it’s advisable to have your vehicle inspected by a qualified technician if you observe any of these signs. If you’re experiencing any of these symptoms, it’s recommended to have your alternator and battery tested by a professional to accurately diagnose the issue and determine the necessary repairs.
If you have any further questions or need additional assistance, feel free to ask!

What sound does a dying alternator make?

If you’re hearing a grinding sound in your car, this could indicate that the alternator is going bad. The grinding sound may be caused by a worn-out bearing. Your car can also make a whining sound when the voltage regulator is sending signals to the alternator to charge more than is necessary.

How long do Subaru alternators last?

While a well-maintained alternator can last between 80,000 and 150,000 miles, being vigilant about maintenance, driving habits, and the electrical load on the system can contribute to surpassing these milestones.

What does a bad alternator sound like on a Subaru?

Whirring and Buzzing Noises from the Engine
If you’re hearing strange sounds that seem to be coming from under your hood, it could be an indicator that something is wrong with your alternator. Don’t ignore these noises; having an automotive expert inspect your car for you would be in your best interest.

Do Subarus have alternator problems?

Your Subaru has numerous systems that require electricity, and the alternator’s job is to produce this electricity. If the alternator is damaged or broken, your car will rapidly develop problems. These are a few of the signs that it’s time to visit your Subaru dealer for an alternator repair.

How do you test a Subaru alternator?

System. So go ahead and turn our meter on grab our ends our leads. The deposit put on the flat side of the battery make sure we got a good connection. The same thing with a negative you’ll.

What’s the easiest way to tell if your alternator is bad?

Here are a few ways to tell if your alternator is bad:

1. One of the most obvious signs is if the car dies after a jump start.
2. “If your alternator is going bad, you might see the voltage meter on your dashboard start to drop, or your car might start to vibrate while you’re driving,” According to Matthew Hart.

How long do alternators last in Subaru Outback?

How Often Do I Need An Alternator Repair? An alternator can generally last for about 150,000 miles or 7-8 years before needing replacement.

How do I know when my alternator needs replacing?

7 Common Signs Your Vehicle Needs an Alternator Repair

1. Starting Problems or Frequent Stalling.
2. Warning Light Illuminates.
3. Headlights Are Either Too Faint or Too Bright.
4. Poorly Charged Car Battery.
5. Burning Smell.
6. Electronic Features Malfunction.
7. Growling Sounds.

Can AutoZone test my alternator?

Getting your alternator tested at AutoZone is simple and hassle-free. An AutoZoner can test your alternator while its still in your vehicle, saving you the hassle of removing it and re-installing it if it’s still good. Or, if you have the alternator out of your vehicle already, we can test it on the bench instead.

How can I test if my alternator is bad at home?

The best way to tell is to get a multimeter, or voltmeter. A good alternator really should be 13.8–14.2 volts, but technically 13.5–14.5 is the good range. Anything above 14.5 or below 13.5 is a bad alternator.