Diagnosing Toyota Tacoma Headlight Assembly Problems
Your Toyota Tacoma headlight assembly is an essential part of your vehicle. It ensures your safety while driving at night or in poorly lit road conditions. Located on the front of your car, the headlights can easily be damaged by various road substances. Knowing the usual problems in your headlight assembly and their causes will be very helpful in determining how to fix it. The following are the common headlight troubles you might encounter with your Toyota Tacoma:
If you notice your headlights dimming especially when you're driving at night, check on them as soon as possible because there may be electrical glitches that need to be given proper attention. Usually, dimming occurs because of a bad alternator. The alternator is responsible for keeping the battery charged. That's why when it becomes defective, the battery loses its power quickly and then causes the headlights to dim. To know if the power in your battery is flowing properly, it is best to use a volt meter.
Headlights not working
If only one headlight is not functioning, the reason would be a burned-out bulb. Bulbs die out eventually, and that's normal. Generally, a Toyota Tacoma headlight can last up to a maximum of 2,000 hours or 12,000 to 15,000 miles a year. But premature failure of the headlight could be due to a weak filament or when the vehicle is often driven on rough roads. If, on the other hand, both headlights are not working, the most likely cause would be a bad fuse, relay, or faulty wiring.
Electrical shorts are usually caused by moisture in the headlight housing or damage in the wirings. Moisture usually builds up when the seal on the headlight lens gets worn out. It eventually reaches the bulb terminals, which causes the short or the bulbs to blow out. You might want to check your headlight housing for cracks, which could be where the moisture originated. Frayed wiring can also result into a short circuit, and in this case, you will need the help of a professional. Lastly, you can check on the headlight fuse for damage as well. If the metal strip inside it is broken, the fuse would have to be replaced to prevent more incidents of electrical short.