Tips Sahabat

Important, Know the Causes of Dim Car Lights

09 April 2025
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The lighting system in cars is not just used as decoration. Rather, the car lights function as an active safety system. Dim car lights can pose a risk of accidents while driving.

Especially if you are driving at night and the street lighting is very minimal, certainly bright car lights will be more beneficial for your safety. Therefore, it is important to recognize the causes of dim car lights.

Here Are the Causes of Dim Car Lights

There are several types of lights that can be used as car lights. The most commonly used type is halogen (bulb). Usually, the common problem with bulb lights is a broken filament.

In addition, there is a type of light that is currently popular and widely used, which is LED. LED lights are brighter because they use a diode circuit. However, the reason both types of lights become dim is due to a lack of electrical current. The causes of insufficient electrical current are as follows.

1. Faulty light relay

The relay in the light functions as a bridge for the main electrical current connected directly from the battery to the light. In this relay, there are two circuits: a small current circuit that enters the switch and the main current circuit that enters the light.

The main circuit in the relay can connect because the switch has been turned on, allowing the light to shine brightly. Now, the common problem with lights that cannot turn on is loose contacts inside the relay.

2. Rusty light socket

Rust can be an obstacle that causes dim car lights. Just like with water, if there is an obstruction in the hose, the volume of water that comes out will be less.

In lights, a socket that has rust can reduce the voltage entering the light. This condition causes the light's illumination to be less than optimal.

3. Melted light socket

A melted light socket is a cause of dim car lights. The melting in the socket area becomes an obstruction to the electrical flow entering the light.

The cause of a light socket melting can begin with the socket not being fully inserted into the light terminal. This leads to an electron jump from two conductors that have a gap.

As a result of the electron jump that generates heat, it melts the socket area made of plastic.

4. Weak battery

A weak battery indicates that the voltage produced will also be weak. Not only the lights, but the electricity generated is also less than optimal. 

For example, during the starting process and the horn also weaken. This condition often occurs in dead cars. However, if the car has been started, the alternator can supply the electrical current needs.

5. Dull light lens

The light glass or lens in a new condition is usually very clear. In contrast, if the light glass has been used for three years, it will appear dull and even cloudy.

With such a condition, the light produced by the lamp will not be maximally bright. You can clean the dirt on the light glass to make it cleaner. However, to open the light glass requires special tools because it is usually installed quite tightly.

Well, those are various causes of dim car lights. Replace your car lights immediately if their illumination is no longer optimal. Your safety while driving is the top priority.

If you want a car with the best quality and maximum lighting, you can buy a car from Daihatsu. Visit our website, Daihatsu, for complete information.

If you want to have a vehicle with sufficiently bright car lights, make sure to buy car products from Daihatsu. Let's drive comfortably with our products!

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