The major respond for the starter motor is to turn the engine over during the ignition. When you put the key in and turn the ignition on, the starter motor will turn the engine over and ask it to take in more air. After the engine turns over, the starter motor disengages. A failing starter motor does damage to the engine and it is the last thing you want it happen. So do not wait until it is too late. If your Subaru doesn't start or doesn't start immediately; if there is a single loud click but the engine doesn't work; if there is voice form the starter motor operation, it is the time to take care of your starter motor. We are glad to help you when you don't know what to do. You can change your starter motor easily at your place. Before that, you need to order a brand new starter motor here. We offer you all Subaru genuine OEM starter motor with a surprisingly cheap price.