Tips Sahabat

8 Causes of Dimming Car Lights and How to Overcome Them

10 April 2025
8 Penyebab Lampu Mobil Redup dan Cara Mengatasinya

Car lights are a very important component and must always be taken care of. Car lights function as a source of illumination when the car is driving in dark places or at night. If this part is dim, it can pose a risk of accidents when the car is driving in dark areas. So what are the causes of dim car lights and how can they be addressed? For more details, please pay attention to the following review.

Here Are the Causes of Dim Car Lights

Here are some causes of dim car lights:

1. The car battery is worn out or weak

The first cause of dim car lights is because the car battery is starting to wear out and weaken. As is known, the car battery is an electrical component that supplies electricity to all electrical components, including car lights.

If the battery condition is weak or worn out, then automatically the light produced by the lamp becomes dim. This happens because the electricity supplied to the car lights is not optimal.

2. Loose lamp socket and wires

In the car electrical system, there are many wires connected. If the wires and lamp socket are loose, it can cause the car lights to dim and short circuit.

3. Reflector is too dull

The next cause of dim car lights is because the reflector is too dull. The reflector in the car functions to regulate the beam of light from the lamp so that it can extend and spread.

If this component is too dull, then the light emitted by the lamp is less bright due to being covered by a lot of dirt.

Read Also: Types of Car Lamp Sockets and Their Functions, Let's Understand!

4. Worn out car relay

Car relay is a component that bridges the battery and car lights to produce light. If this component has problems or is worn out, then automatically the car lights become dim. 

5. Poor quality bulb

Poor quality bulbs will also affect the light of the car lights. Bulbs of lower quality usually have a shorter lifespan.

6. Incompatible car voltage

Before you buy a bulb, you should pay attention to the voltage rating. A bulb with a higher or lower voltage can also be a cause of dim car lights.

7. Problematic or blown car fuse

As you know, car fuses are components that can prevent short circuits. If this component has problems or is blown, it can cause the car lights to become dim. 

8. Rusty or melted lamp socket

The last cause of dim car lights is because the lamp socket is rusty or even melted. The presence of rust or corrosion on the socket part, or a melted socket holder can hinder the flow of electricity to the car lights. As a result, the light produced becomes dim.

How to Fix Dim Car Lights

Here are some ways you can practice when you want to fix dim car lights. 

1. Pay attention to the quality and wattage of the bulb

Using quality bulbs and paying attention to the voltage of the bulbs that meet the car's standards can produce bright light.

Read Also: Some Causes of Main Light Bulbs Burning Out Quickly

2. Replace problematic relay, fuse, socket, or electrical wires

When the condition of the relay, fuse, socket, or electrical wires is problematic or worn out. You can immediately replace these components with new ones.

If you are inexperienced, you can ask for help from a skilled technician. You can also visit a Daihatsu dealer to replace components with quality ones.

3. Regularly clean the reflector part

As explained above, the condition of a dull reflector can affect the light produced by the car lights.

To prevent the reflector from becoming dull and rusty, you need to perform regular maintenance on this component. If you are not skilled in cleaning this component, you can have maintenance done at the nearest Daihatsu dealer. 

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