Toyota Alternators

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2005 Scion xA

Base 1.5L L4 - Gas

How an Alternator Works

Put simply, it converts the mechanical energy from your engine into the electricity that feeds your battery, parts, systems, and accessories. It starts with the engine crankshaft, which turns the pistons' vertical motion into rotary motion. That moves a drive belt that's attached to a pulley located on the rotor shaft. That shaft rotates, which agitates magnetic coils contained within. The coils create a magnetic field, which is captured as AC power by a rectifier. The rectifier turns that into the DC power that feeds your battery, electronics, power windows, wiper blades, and more.

How to Spot Alternator Problems

Even the best alternator can go bad eventually, though. When that happens, your battery becomes the sole source of electricity √ê which means it can drain fast and leave you stranded without power. Avoid that. Signs of a failing alternator include:

Power windows stop working
Dim or flickering headlights
Sound system problems
Your battery keeps dying
Strange engine noises

Save up to 35% on the Genuine OEM Alternators Perform Best

When you do need to replace your alternator, it's important to choose one that's compatible with your vehicle and its engine. Your manufacturer makes their alternators specifically to work with their models, meaning that compatibility you want comes guaranteed. Our online auto parts center has everything you need for the project, in stock and priced well below the MSRP that others charge. Buy now to save both time and money!