Parts for your 2020 Subaru Legacy-Alternator

Understanding the Alternator in the 2020 Subaru Legacy

The 2020 Subaru Legacy, a popular midsize sedan in Australia, is equipped with an alternator like most conventional petrol vehicles. The alternator plays a key role in keeping the car's electrical system running smoothly and ensuring the battery stays charged. If you own or are thinking about owning a 2020 Subaru Legacy, it's really handy to know how the alternator works and why regular maintenance or timely replacement is important.

So, what exactly does an alternator do? Simply put, the alternator is a device that converts mechanical energy from the engine into electrical energy. When you start the Legacy's engine, the alternator starts spinning, driven by a belt connected to the crankshaft. It generates alternating current (AC), which is then converted into direct current (DC) to charge the 12-volt battery and power all the car's electrical systems while the engine is running. This includes things like headlights, the infotainment system, climate control, and even safety devices.

Without a functioning alternator, the battery would quickly drain. The car might run off battery power for a while, but once that runs out, the engine will stall and none of your electrical components will work properly. That's why an alternator is crucial for day-to-day reliability and performance in the 2020 Subaru Legacy.

Owners should remember that an alternator is not a part that lasts forever, even if your Subaru Legacy is only a few years old. Like any mechanical component, wear and tear can lead to problems down the track. It's not uncommon for alternator issues to start showing up through warning signs that are important to catch early.

Here are a few common signs that the alternator in a 2020 Subaru Legacy might be struggling:

• Dim or flickering dashboard lights or headlights
• Warning lights on the dash, particularly the battery symbol illuminating as you drive
• Electrical components acting erratically or powered down
• The battery repeatedly needing a jump start
• Unusual noises from the engine bay, such as whining or grinding sounds coming from the alternator area

If you notice any of these indicators, it is a good idea to take the Legacy to a qualified mechanic or Subaru service centre. They can perform a test on the charging system to determine if the alternator is at fault or if the battery or wiring is the cause.

Typically, the alternator in a 2020 Subaru Legacy doesn't need frequent replacement if the vehicle is well maintained. However, regular check-ups during scheduled servicing can extend its life significantly. Servicing usually includes visual inspections of the alternator belt for cracks, fraying, or looseness, checking the electrical connections, and testing the output voltage of the alternator. If the belt slips or the electrical contacts are corroded, it can reduce the alternator's performance and lifespan.

Subaru recommends regular servicing intervals to coincide with oil changes and other routine checks, which is a good opportunity to make sure the alternator and related components are in good shape. Keeping up with these services will help avoid unexpected breakdowns and ensure the Legacy's electrical system stays reliable.

When it comes time to replace the alternator, several factors come into play. Alternator replacements are often necessary after about 100,000 to 150,000 kilometres, but this can vary depending on driving conditions and vehicle use. If the alternator fails, it's best to replace it with an OEM (Original Equipment Manufacturer) or high-quality aftermarket part designed specifically for the 2020 Subaru Legacy. Using quality components ensures the new alternator will fit correctly and deliver the right electrical output for all vehicle functions.

Replacing the alternator also gives the technician a chance to inspect the surrounding components like the drive belt tensioner and pulley system, which can wear alongside the alternator belt. If these aren't checked and replaced as needed, it can cause premature failure of the new alternator.

In terms of DIY maintenance, most drivers can keep an eye on visible signs such as belt condition, unusual noises, and dashboard warnings, but alternator replacement itself is best left to professionals. The task requires special tools to handle wiring, mounting bolts, and belt tension properly.

In short, the alternator in the 2020 Subaru Legacy is essential for keeping the vehicle's electrical system healthy and the battery charged. Regular service inspections and attention to warning signs help keep this part working well for years. Taking care of the alternator not only avoids inconvenient breakdowns but also supports the overall performance and reliability of the Legacy, making every drive a hassle-free experience.