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How to remove moisture from headlights


Maybe you just got home from the state motor vehicle inspection and need to figure out how to remove moisture from your headlight assembly to pass the inspection. Or maybe you’ve noticed that you can’t see as well at night as you’d like.

Either way, too much moisture in the headlight assembly is a big problem. Figuring out how moisture gets there plays a huge role in what you need to do to remove it, so we’ve addressed all the possible causes and solutions here.

Don’t worry, your headlights will dry out and your vehicle will be back on the road in no time!

See also: 11 types of headlights

What causes moisture to enter a headlight?

clogged headlight vent
headlight vent

There are three main causes of moisture inside your headlight. Each of these elements can also be applied to other exterior lights, such as fog lights, tail lights, and side markers.

#1 – Lighthouse

A second possible cause is a blocked moisture vent. This is the best-case scenario because you won’t have to break the seal and fix the headlight if you do everything right.

A wet wind blocker causes your headlamp to fill with water because as the halogen bulb heats up and cools, it creates condensation, and without that condensation, moisture will build up in the headlamp.

#2 – headlight gasket

The first was a faulty headlight seal. If so, you will need to repair the gasket or replace the headlight.

#3 – Lighthouse Damage

Finally, you could have a cracked or damaged headlight assembly. If so, you’ll need to get creative with repairs or, more likely, replace the headlight assembly.

Also Read: HID vs LED vs Laser Headlights Comparison

Is condensation on the headlight assembly bad?

water in the lighthouse

It is certainly possible. There are many reasons why condensation in your headlights is bad. For starters, it’s water around electrical components, which is always bad. It can shorten the system, corrode cables, and cause many problems that will require additional repairs.

Not only that, but condensation in the headlights results in foggy headlights. When you turn on your headlights, condensation will block a ton of light, meaning you won’t have as much visibility. It’s not hard to see why this is so important.

See also: How to remove mold from inside your car

How to remove condensation from headlights

how to repair wet headlights

If you have condensation on the headlight assembly, it must be removed. There are several ways to do this, and it all depends on how the condensation gets in and how much condensation is present.

Broken headlight assembly

Let’s start with the worst-case scenario: a cracked headlight assembly. We’re not talking about a faulty seal or a blocked vent here, but rather a complete crack. In this case, you will need to replace the entire headlight assembly to prevent water from entering.

For short-term solutions, you can try a hair dryer to dry everything, but it will be hit or miss if it works well enough. But even if you do, the next time there’s morning dew, rain, or other condensation, you’ll be right back where you started.

bad seal

The next problem is a faulty seal. This is a big problem because, most of the time, the seal is not an easy solution. You should start by removing the headlight assembly and gently separating the gasket assembly.

Start by drying everything upside-down. After that, you’ll need to get a hot glue gun and apply a new bead to the entire assembly, or, if you’re lucky, use a headlight gasket from an auto parts store. .

But most headlights don’t have gaskets like this, so you’ll probably have to do it yourself. You need to get a tight seal, so take your time and do it right the first time.

Also read: How to dry the interior of a car after a water leak

blocked moisture vent

The last possible problem is a blocked wind. This allows condensation that rises due to the temperature change caused by the bulb to escape. All types of debris can block this vent, so check to make sure it is clear before removing the seals.

If so, do your best to remove debris from the headlight instead of pushing it in. If it gets stuck inside the headlight assembly, you have to break the gasket again to clean everything out.

See also: Taillights don’t work, but brake lights do

What happens if water keeps getting into the headlights?

If water continues to get into your headlight after repairs, you may still have a faulty seal or a clogged vent. You can try the repairs again or replace the headlight assembly.

Although replacing a set of headlights is not always cheap, the result is better than shorting out the system and causing a fire or losing visibility at night and having an accident.

Whatever you do, do not allow moisture to enter the headlight assembly. It’s only a matter of time before the small inconvenience becomes a big problem.



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