Why Does My Headlights Turn Off While Driving?

What if you’re enjoying a night drive with your partner and meanwhile your car’s headlights suddenly turn off. If you wonder, “Why do my headlights turn off while driving?” then this article is exactly for you. Please keep reading to find out the causes and the way to fix them!

What Causes My Headlights Turn Off While Driving?

The headlight system is usually not overly complicated. It consists of a few basic components such as a bulb, relay, fuse, and switch. Thus, when they fail, it could be due to these components.

1. One Headlight Gets Burn-out:-

It is the most common cause of these headlights turning off while driving problem. When the bulb of one headlight gets burnt out it will lead to this problem. You need to keep in mind that if one bulb fails, the other can soon fail too. However, power and grounding problems can cause this.

2. High Or Low Beams Stops Working:-

Low beams are normal lights. They are used when driving at night or in dimly lit environments so that other vehicles can see your car without being blinded. High beams are long lights with a larger inclination angle than low beams. They are used on roads with almost no light and little oncoming traffic.

3. Headlights Becomes Dim:-

The dim lights are usually caused by old bulbs, fog lenses, and power sources. On the contrary, if it only dims under certain circumstances, then the problem lies in the charging system.

4. Both The Headlights Doesn’t Work:-

Bulbs usually don’t burn out together, but it’s still important to rule that out by checking for power. Most total headlight failures are caused by a bad component like a fuse, relay, or module. Wiring problems can also cause both headlights to stop working.


Hence, these are some causes behind the cause which kept you wondering why do my headlights turn off while driving?

What Should I Do If My Headlights Go Out While Driving?

1. The first thing you need to do is retry the dimmer switch, which can be flexible between modes.

2. If that does not work, you should use other lights such as parking, hazard, or turn signals to let other vehicles notice your presence on the road.

3. Then you should find a place to park, and check the headlights.

4. If the problem does not improve, then replace the light bulb.

5. When one or both of the high or low beam lights fail to work, it could be a burn-out, a faulty high switch, or a loose relay. At that time, you need to check, replace or repair if necessary.

6. If the headlights become dim. You can fix it yourself by checking the wiring, accumulator condition, voltage drop, and other system details. Or the auto repair shop can handle them faster and more guaranteed.

Therefore, you can follow these basic steps to resolve the issue of my headlights turn off while driving.

How Do I Know If The Headlight Switch Is Bad?:

1. When the switch fails, only one or certain modes of headlights including low/high beams, fog, parking, and daytime running lights can be controlled. Disturbance of the control mode can cause the lights to go out or limit the light and visibility for the driver.

2. High beams are often used when traveling at high speed with no light and no oncoming vehicles. When the light switch is broken, the high beam will be separated and used.

3. Signs of a faulty switch are often easier to spot than other faults because they involve many parts of the light. A faulty switch will prevent the current from reaching the bulbs. It is unsafe if your car does not have headlights, especially on poorly lit roads.

Therefore, the warning signs of a broken headlight switch are easily recognizable if you pay a little attention before it fails. It is important to check it before driving, especially when traveling at night.


We hope the above-mentioned information about the issue of my headlights turn off while driving will be helpful to all the readers. If anybody’s doubts persist feel free to comment in the comment section below. We’ll definitely try to solve your doubts as soon as possible.

Leave a Comment