How To Clean Inside Of A Sealed Headlight

Do you have a sealed headlight that looks foggy or dirty on the inside? While it may seem like an impossible task, cleaning the inside of a sealed headlight is actually doable with the right tools and techniques. Not only will a clean headlight improve your visibility while driving at night, but it will also enhance the overall appearance of your vehicle.

In this article, we’ll go over step-by-step instructions on how to clean inside of a sealed headlight. We’ll cover everything from removing the headlight assembly to using different cleaning solutions and tools. Whether you’re an experienced DIYer or just looking to save some money on repairs, our guide will help you achieve clear and bright headlights in no time.

Tools Required:

To begin with, you’ll need some essential tools for this job.

  • Screwdriver set
  • Torx or Allen wrench set
  • Heat gun or hairdryer
  • Clean microfiber cloth
  • Plastic scraper or trim removal tool
  • Clear adhesive sealant or headlight sealant kit

How To Clean Inside Of A Sealed Headlight – 4 Easy Steps

Step 1: Remove the headlight from the vehicle

To accomplish this, locate the screws holding the headlight in place and pry them out using a screwdriver. After removing each screw, carefully pry the headlamp away from the car and unhook any electrical connections. During this operation, be careful to keep track of all the screws and any small pieces that might come loose.

It’s time to clean the inside of your car once you’ve removed the headlight. While there are a number of ways to clean sealed headlights, one well-liked technique involves using toothpaste and a soft cloth.

Step 2: Disassemble the headlight

Start by taking out any screws or clips around the edge of the lens to start disassembling your headlamp. Utilizing a plastic trim tool or flathead screwdriver after these have been taken out, carefully peel the lens from the housing away. As you work, take care to avoid breaking or damaging the lens.

Once you’ve separated the lens from its housing, remove any bulbs or wiring that may be connected to it. This will give you access to clean out any debris that has accumulated inside your headlight over time.

Next, melt any remaining adhesive between the lens cover and housing using a heat gun. This will make it simpler to remove any remaining adhesive or sealant between them without causing any damage.

Step 3: Clean the inside of the headlight

Once you’ve successfully removed all visible dirt, it’s time to remove the interior cover by accessing the backside of your headlight assembly. This will allow you to access all areas that need cleaning without damaging any other parts.

Starting with soap and water, clear away any dirt or debris from the headlights outside. Wait until it is completely dry before moving on.

To clean the inside of the headlight, prepare a cleaning solution consisting of warm water and dishwashing soap. Mix them together thoroughly before applying them to a microfiber cloth or sponge.

Step 4: Reassemble the headlight and seal it back up

It’s time to reinstall and seal a sealed headlamp after satisfactorily cleaning the interior. Reinstalling the bulb into its socket and fixing it in place should come first. Next, place the lens cover over the headlight assembly gently, making sure it fits tightly.

Once you’re happy with how everything is positioned, apply a high-quality sealant to fill in any gaps or openings in the headlight housing. Your headlights will keep as clear as possible for the longest time thanks to this prevention of moisture entry.

It’s important to note that while this process may seem simple, it requires attention to detail and care. Rushing through any step can result in damage or improper sealing, which could ultimately lead to costly repairs down the line. So take your time, focus on each step, and enjoy brighter, clearer headlights!

How To Clean Inside Headlights Without Opening Them

It can be difficult to clean the interior of headlights without opening them. Here are a few quick instructions that will enable you to attain spotless headlights without having to disassemble them.

1. Prepare the cleaning solution

In a bucket or spray bottle, first combine warm water and mild dish soap.

Avoid applying aggressive chemicals that could harm the lens or housing of the headlights.

2. Soak a microfiber cloth

To remove any extra liquid, dip a soft microfiber cloth into the soapy water mixture. Make sure the towel is slightly moist but not dripping.

3. Wipe the headlights

Use the damp microfiber cloth to gently wash the internal surface of each headlight, working your way from one edge to the other in a circle. Be meticulous, but try to avoid putting too much pressure on the lens, since this could scratch or harm it.

4. Dry with another cloth

After cleaning the interior of the headlights with soapy water, wipe out any remaining moisture using a clean, dry microfiber cloth.

Safety Measures

The chemicals used in cleaning can cause irritation or even damage your skin or eyes if not handled with care. So

  • Wear protective gear such as gloves and goggles
  • Choose an appropriate cleaner that is safe for use
  • Consult a professional mechanic for guidance

What Causes Oxidation Inside Headlights

How To Clean Inside Of A Sealed Headlight

The majority of car owners have dealt with oxidation inside headlights at some point. But what precisely is the root of this annoying problem? These are the following problems

  • Exposure to UV rays
  • Accumulation of dirt and grime
  • Chemical reactions with pollutants in the air
  • Moisture and condensation build up inside the headlights
  • Degradation of protective coatings or sealants
  • Low-quality materials are used in the manufacturing process.

How to Clean the Dirt Inside the Headlights

For cleaning the dirt inside the headlights you need to follow the same procedure already discussed at the start of the article. These easy methods will help you easily remove the bothersome dirt from inside your headlights so that you may drive at night or in poor weather situations with brighter illumination.

Alternative Method At Home To Clean Outside Of The Headlight

Tips for maintaining clean headlights

Firstly, it’s important to note that sealed headlights cannot be opened up for cleaning without damaging them. Therefore, the best way to clean the inside of a sealed headlight is by using a headlight restoration kit. These kits come with everything you need to restore your headlights back to their original shine and clarity.

To use a headlight restoration kit, start by thoroughly cleaning the outside of your headlights with soap and water. Once they are dry, apply the solution provided in the kit onto each headlight lens.

Conclusion: Clearer, safer driving at night,

In conclusion, maintaining clear headlights is crucial for the safety of both drivers and pedestrians on the road. Regular cleaning and maintenance of sealed headlights can prevent fogging, yellowing, and overall degradation of the headlight’s effectiveness. Knowing how to clean the inside of a sealed headlight is not only practical but also financially beneficial as it can save you from costly replacements.

With these tips in mind, it’s important to make sure your vehicle’s headlights are always functioning at their best. So take some time to clean your headlights today and ensure a safer drive for yourself and others on the road.


1. How can moisture be removed from sealed headlights?

The simplest technique is to make a few tiny holes at the bottom of the headlight assembly and let it air out. For results, just wait for your headlight to cool down.

2. Can I prevent headlight oxidation?

Even though it might not entirely be avoidable, there are steps you can take to reduce headlight oxidation. Applying a protective coating or sealer on a regular basis will help lessen the harm UV rays and other elements cause.

3. How frequently should sealed headlights be cleaned?

Cleaning the interior of sealed headlights is not subject to a set schedule. Depending on the weather and other variables, once every year or two is often advised.

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