Headlights significantly impact and play an integral part in a safe driving experience. Drivers rely on headlights when driving at night or in low-visibility conditions. These car components provide adequate illumination to prevent vision impairment. However, headlights can become dim with time and compromise ride safety.
This issue can occur due to multiple reasons. Before you opt for a solution, it is crucial to understand the underlying causes of dim headlights on a car. That said, we have listed the most common causes of the problem and how you can fix them.
Headlights Rules in the UAE
In the UAE, drivers need to understand the importance of car lights. The car headlights, indicators and rear lights must work properly. In line with the UAE traffic law, the motorists will be fined AED 400 and six black points in case the headlights are not working properly.
Consequently, if you are facing an issue with your car headlights, it’s best to get them inspected and fixed at the earliest. In case you’re noticing dim car lights, here are the underlying reasons and their solutions.
Causes and Fixes of Dim Headlights on a Car
Like any other car part, headlights are also prone to damage. You might notice the headlights flickering or a drop in light brightness. When it comes to a decrease in the headlight illumination, there can be several reasons for the problem. The headlights might become worn out over time, or a fault in the wiring might cause them to malfunction.
That said, the following are the reasons for dim headlights on a car.
Burnt Out Bulb
When you use headlights for long periods, even during the day, they will eventually wear out. This makes a burnt-out bulb one of the causes of dim headlights. Also, like the lenses, the headlights bulb can become oxidized. In the case of halogen bulbs, the buildup of gas dims the light.
How to fix it?
For burnt-out headlight bulbs, it is best to replace them. When placing the new bulb, do not touch it with a bare hand. It creates a spot on the surface which heats up and can cause the bulb to blow out.
Also, it is advised to switch to LED headlights which are much brighter, easy to install and provide a broad pattern of light.
Ageing and Oxidized Headlights
One of the main reasons for dim car headlights is the ageing and oxidation of the lenses. The headlight lenses are made from polycarbonate acrylic. Over time, the material becomes yellowish and cloudy due to dust and grime.
The constant exposure to UV rays also causes lenses to oxidize. It causes a dimming effect despite the proper working of headlight bulbs. Also, if the seal around the headlights becomes worn and breaks, it causes condensation on the lenses and makes them foggy.
How to fix it?
You can restore car headlights to get rid of foggy lenses. A proper cleanup will make the headlights shine as new and restore their brightness. Clean the car headlights from the inside to remove any blemishes and stains.
You can also seek professional assistance for restoring the dimmed headlights.
Wiring Problems
A wiring network carries out the headlight illumination. The ground wire connected to the car chassis is vital to provide the required power to the headlights. However, if the wiring becomes damaged, you will notice dim headlights on a car.
When there is an improper flow of electricity, low power will be delivered to the headlights, resulting in a dimmed appearance. Also, if the grounding wire becomes too dirty or corroded, it will disrupt the power flow.
How to fix it?
To fix such wiring problems, you must refer to a professional electrician. The grounding wire must be replaced or a new wiring harness must be installed. Also, in case of car fuse damage, it must be replaced.
Faulty Alternator and Alternator Belt
A car alternator provides power to different parts of the vehicle including headlights. It also recharges the car battery as you drive around. However, a malfunctioning alternator can be another cause of dim headlights. When an alternator goes bad, the power supply is hindered and components start to underperform.
Apart from the alternator, a faulty alternator belt also causes the headlights to get dimmer. An alternator belt connects the alternator to the engine’s driving shaft. If this belt gets damaged or fails, it disrupts the power supply across the car components.
How to fix it?
A malfunctioning car alternator and its belt must be replaced. You can diagnose the problem with a simple test. Start the car, turn on the headlights and put it in Park mode. Press the accelerator and ask another person to observe the headlights. When the accelerator is pressed down, and headlights appear dim or seem to flicker, it is an indication of a bad alternator.
However, it is best to take your car to a service centre for professional help.
Dead Battery
The most common reasons for dim headlights on a car are either a bad alternator or a battery. However, if the alternator is working properly, the car battery might be an underlying issue. If the battery has drained, you will notice dim headlights. Also, the car will start and suddenly die if the battery is not functioning properly.
How to fix it?
To fix a drained or dead car battery, you can jump-start the car. Moreover, if the issue doesn’t get resolved you must replace the battery and get it checked by a professional mechanic.
Apart from the above-mentioned solutions, there are other easy ways how to fix dim headlights. Check the adjustment of headlights and the configuration settings. These methods will help to overcome misalignment and visibility issues.
Moreover, if you are dealing with a broken tail light, head over to this guide on how to replace car tail lights and follow the simple steps to change them.
These were the different reasons and their solutions for dim headlights on a car. There are several benefits of upgrading the car lighting system, for instance, properly functioning headlights are important for safe driving and must be checked regularly. Therefore, whether you drive a new or a used car in the UAE, and notice dim headlights, you can go through these causes to troubleshoot the problem.
Also, you can check these car headlights and parts and accessories for sale on dubizzle.
Stay tuned to dubizzle’s auto blog for more useful tips on car maintenance.
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