Get a professional mechanic or electrician to help you fix it. This can happen if you frequently drive with your Lo beam headlights on during the day for visibility. If your headlights always seem dim, or they don’t seem to illuminate the road correctly, there are a handful of factors that could be at play. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Can you help. Ive replaced all the bulbs (front one was blown) but still not working. One of the most common symptoms of a faulty headlight switch is issues switching between headlight modes. In the case of dual filament headlight capsules, this literally sends power to the high beam filament. To troubleshoot the motorcycle headlight in this case, you would remove the relay, and replace with a known working relay. If you’re lucky, you will find that the same relay used in your headlight circuit is used in one or more other circuits. However, you’ll still want to dig a little deeper to figure out why it came loose in the first place. There was a known issue included with the purchase. So it’s actually pretty common to have one bulb burn out before the other. What Causes a Car's Electrical System to Suddenly Stop Working? wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. When the charging system can’t keep up with the demands of aftermarket components like amplifiers, the dash lights and headlights are often the easiest sign to pick up on. If the headlights start working at that point, then the relay was the problem. My mechanic replaced my crankshaft sensor without disconnecting the battery on my Hyundai i120. So if you find that your headlights have suddenly stopped working, it’s important to take note of the type of failure you’re dealing with and go from there. The diagnostic procedure that a professional technician will actually follow is similar to the one outlined below. This is a process that involves removing the oxidation with an abrasive and then applying a protective clear coat. High beam headlights don’t work or low beams don’t work. So if it has been a long time since you replaced your headlights, a brand new set of bulbs may shine a light on your problem. Based on which bulbs have stopped working, and under what circumstances, you can use the following information to narrow down a solution: High intensity discharge (HID) headlights can also fail due to other associated components. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Yes. ", "The dash lights helped me a lot, and the tail light tinting as well. If you pull the relay and shake it, and you hear something rattling inside, then it has probably failed. Fortunately, all 3 problems are relatively easy to fix. Front headlight, indicator, parking light and full beam - not working. Before you write off your headlight bulb as bad, it’s important to look at the electrical connector for any signs of damage or corrosion. % of people told us that this article helped them. When you return home, press the replacement fuse into the correct fuse slot until you hear it click. Many of the same problems that can cause headlights to stop working altogether can also cause just low or high beams to malfunction. If you find that the fuse isn’t blown, then the next step is to check for power with a voltmeter. Have checked fuse. If your headlights always seem dim, the problem could be foggy lenses or worn out bulbs. This image may not be used by other entities without the express written consent of wikiHow, Inc.