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Toyota Corolla Headlight

Two Important Tips for Proper Maintenance of Your Toyota Corolla Headlight

Your Toyota Corolla headlight assembly makes it possible for you to safely navigate the road at night and in dark driving conditions. Since it serves as your Corolla's eyes on the road, your headlight set needs to have 20/20 nighttime vision to ensure driving safety. That can only be achieved if the headlamp lenses are always crystal clear and the bulbs as well as the electrical connections are all working well. That goes without saying that ideal nighttime vision can only be realized if the headlights are properly maintained. To help you with that, here a few tips on how to get the most out of your Toyota Corolla's headlight assembly:

  • Clean the headlights from time to time.

The sun's UV rays cause the headlights—especially polycarbonate ones—to cloud or become hazy over time. While it normally happens, yellowing or fogging of the headlights is something you shouldn't ignore as it can affect the beam of lights coming out of the lamps. This issue is easy to fix, though. While you don't need the help of a pro in restoring your cloudy headlights, you may find the whole task a bit lengthy as you need to prep up your lights first before actually going into the process of restoring the lens, which usually include sanding and polishing.

If you will sand the headlights, it would be wise that you apply UV sealant or high-temperature-resistant UV coating afterwards. You see, sanding or using abrasives eliminates the headlight's protective layer. So, it is just right that you provide it with the same protection after restoration.

  • Make sure your headlights are properly aimed all the time.

It is also a good idea to check the aiming of your Toyota Corolla headlight assembly at least once a week and every time you put it back into the car after cleaning. The process is very simple. You just have to park on a level surface a few inches from a wall. With a chalk, mark the location of the headlight beams. Drive in reverse for about 25 feet and observe the beam of the light given off by the headlamps. The low beam must still be level and must point straight ahead within only a few inches off the points that you've marked. If this isn't the case, you have to adjust the beams by turning the headlamp's two setscrews.

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  • Common Toyota Corolla Headlight Problems and How to Troubleshoot Them

    If you are behind the wheels of your Toyota Corolla, most of your decisions will depend on what you see around you. At nighttime, your headlights greatly affect your driving decisions and safety as they act as your eyes on the road. Hence, it is important that you keep your Toyota Corolla headlight in excellent working condition. As soon as the first sign of irregularity occurs, have it diagnosed immediately to know the proper way to deal with it. Here are some of the problems you are likely to experience with your Toyota Corolla headlight and how to troubleshoot them:

    One headlight isn't working

    The common culprit for this is a burn out bulb on the lamp that went out. To confirm if it's indeed the cause of the problem, you have to inspect the bulb visually. A burn-out bulb is usually discolored and the filament inside seems to have a gap or loose pieces. If the bulb is burned-out, the only fix for that is replacement. But before doing that, make sure also that the electrical connection on the back of the headlight is not loose or corroded. If the bulb seems okay, you have to do further troubleshooting as the problem might be a bad switch or a broken or loose wire.

    Both headlights aren't working

    In this case, your primary suspect shouldn't be the bulb as there is a very slim chance that both bulbs will burn out at the same time. The first thing you might look into when this happens is the fuse. You have to remove and visually inspect it. Pay attention to the filament. If there's a gap in it, that means your fuse is now burnt. If it doesn't, you can check the ohms setting on a multimeter. A good fuse has about zero ohms of impedance.

    If there seems to be no problem with the fuse, the next component you should check is the headlight relay or the control module. If your Toyota Corolla headlight's electrical system makes use of a relay, determine where it is located, pull it out, and shake it. If there's something rattling inside, it indicates that your relay is now in need of replacement.

    On headlights using control module, you have to check first for a bad relay, wiring faults, or bad switch. If it's clear that power is delivered into the module yet the lights aren't turning on, then the problem lies with the control module.