Your Toyota alternator supports all of the electrical components in your vehicle, as it is constantly working while the vehicle is running. It continuously replenishes the power of the battery, which is why the electrical components in the vehicle do not totally drain the battery. Without the Toyota alternator serving this purpose, the electrical demands of the vehicle would leave the battery so drained of energy as to be unable to start the vehicle after it is shut down. With the degree to which the Toyota alternator is affects the starting and running of the vehicle, it is fortunate that it is much less common today for a Toyota alternator to fail all at once. Because there is a bit of redundancy built into the Toyota alternator, with three energy producing sections within it, it is far more common for the alternator to fail gradually, helping to allow you to avoid being left completely stranded somewhere, provided, of course, that you are familiar with the symptoms that typically indicate a problem with the Toyota alternator. Because of the degree to which the Toyota alternator is involved in powering the electrical components of the vehicle, when the Toyota alternator is struggling, you are likely to notice a variety of little electrical disruptions, such as power windows that are sluggish, windshield wipers that drag slowly through their task, interior lights and headlights that seem dimmer and turn signals that seem to be blinking slower than they usually do. If you are experiencing such symptoms, you should take a peek under the hood and make sure that all of the belts and wires of your Toyota alternator are in place and in good condition. You should also have a voltage test done, which will let you know if your Toyota alternator is on its way to failure. If the voltage test reveals that a new Toyota alternator is on the horizon, you can easily order one from our affordable, quality selection, either online or by dialing our toll-free telephone number.