Have you ever encountered a situation that Toyota Corolla headlights do not work while you are moving on a dark road. This is dangerous if that stretch of road does not have street lights or lighting aids.
Therefore, we don’t need to talk about the importance of car headlights or how dangerous it is if the headlights don’t work.
In this article, we will learn about the causes of Toyota Corolla headlights not working and how to fix the problem quickly in dangerous situations.
How To Deal With Toyota Corolla Headlights Not Working?
Headlight technology is not too complicated, but it can encounter errors in different situations.
So, if you notice your headlights suddenly stop working, the first thing you should do is observe and discover the cause of that condition to find a way to fix it.
Most headlight systems are designed quite simply, including a few basic components such as bulbs, relays, fuses, and switches.
When your headlights stop working, it’s usually an electrical problem or a physical problem with the headlight bulb.
Here are some common mistakes that cause your car’s headlights to stop working.
1. Check The Car’s Power Supply
The first reason you need to consider is that your car is likely running out of power or the battery is low. This will make the car’s headlight system inoperable.
You can check the overall power of the car. If other car accessories such as the radio, windshield wipers, or audio system don’t work or behave erratically, the car’s battery may be low or dead.
If you notice dimmed headlights or dark lights when you start your vehicle, the problem may be with the electrical system. The most common cause is a bad alternator or loose belts.
If you find that your battery voltage is below 13V while the engine is running, you should check the charging system to make sure the headlights are getting enough power to illuminate.
Therefore, you should quickly recharge or replace the battery if necessary. The battery in the Toyota Corolla is usually located behind the driver’s headlight in the engine compartment.
2. Fuse Not Working
All electrical systems, including headlights, are protected by fuses in your car. If one or more fuses are damaged, the car headlights may not receive the battery and may not light up.
The purpose of the fuse is to break the circuit if too much electricity passes through them. This will help protect all components on the circuit. If the headlight fuse is blown, it can cause the headlights to stop working.
Most headlight systems are also designed with two low beams and high beams. So if the fuse doesn’t supply enough power, the high beams can work, but not enough power for the low beams to light.
Therefore, you should check the activity of the fuse. The main fuse in the Toyota Corolla is located under the dashboard on the driver’s side to the left of the steering wheel, usually behind a small door.
When replacing a headlamp fuse, you must use a new fuse of the same amperage rating.
If the fuse in your car is blown, it may have a problem elsewhere in the circuit, and replacing a new fuse with a higher amperage can cause serious damage such as a current burn, wiring, or headlight system.
If you see that the fuse is not blown then the next step is to check the power with a voltmeter. You should find the voltage of the battery on both sides of the fuse.
3. Check Bulb Integrity
If you observe one or two bulbs not working while the fuse is intact, the bulb may have burned out.
As you know, one of the two main causes of headlights not working is the power supply and the physical problems of the bulb. If you are sure that your car does not have a power problem, the second factor you need to check right away is the headlight bulb.
If you can remove the bulb from the headlight position, you can check to see if the filament is intact.
If you want to replace the headlights, you should contact Toyota Corolla for replacement parts according to your vehicle type. This will help your headlight system be properly connected, durable, and compatible with the vehicle’s electrical system.
4. The Headlight Connection Wire Is Broken
Headlight wiring is also a cause you can check while other causes have been ruled out.
If the wire connected to your headlights is broken or damaged, it will cause the headlights of your car to stop working.
This often happens if you leave your car outdoors or in areas with lots of rodents such as mice, ferrets or cats can cause the connection to be broken, open, or loose.
If you have a voltmeter, you can check the power of the headlights and determine if anything is blocking power to the headlights.
5. Corroded Power Socket
Most car headlights are plugged into an outlet. Overtime or weather problems these sockets can corrode.
The cause can come from parking the car in wet ground or metal areas for a long time as well as the life of the vehicle causing the connection to the headlight bulb to fail.
If the socket is corroded, it means that the connection of the bulb and the power supply is not good, leading to the headlight being turned off in one of the lighting phases.
Since the high beams are on a different circuit, they usually work well even when the low beams stop working due to insufficient power supply or bulb damage.
The Last Word
Toyota Corolla headlights may not work for a variety of reasons. It can appear from objective factors such as the weather, the age of the vehicle, or destructive animals.
However, if you can eliminate the above objective reasons, then you can consider the reasons we have just given above.
Immediately check the power supply, fuses, relays, sockets, connections, or physical problems of the light bulb.
Whenever you want to replace any part that causes Toyota Corolla headlights to not work, you should also thoroughly research the capacity, amperage, efficiency, etc.