Fog lights help you see clearly and stay visible in fog, heavy rain, or snow—but since they sit low on the vehicle, they’re prone to damage. Cracks, water leaks, and burnt-out bulbs are common. If your fog lights stop working or seem too dim, it might be time for a replacement. Sometimes it’s just the bulb, but in other cases, the entire fog light assembly may need attention.

Not all issues are caused by damage—older halogen bulbs simply fade over time. Upgrading to modern LED fog light bulbs can improve both brightness and lifespan.

This guide aims to help you understand the fog light replacement cost, so that you can make an informed decision and avoid unnecessary expenses.

Fog Light Replacement Cost Estimate

Fog Light Bulb Replacement Cost

Replacing a fog light bulb is generally straightforward. On average, you can expect to pay between $85 and $112, which includes both parts and labor. For instance, a typical service might involve $33 for parts and $79 for labor, according to the RepairPal.

Full Fog Light Assembly Replacement Cost

If the entire fog light assembly needs replacement—due to damage or upgrading to LED lights—the costs are higher. Parts alone can range from $100 to $400 per light, depending on whether you choose OEM or aftermarket options. Labor charges can add another $50 to $100 per light, especially if the bumper needs removal for installation.

Dealer vs. Independent Shop Costs

Dealerships often charge more for fog light replacements. For example, a dealer might quote over $700 for replacing a fog lamp, with $300+ for the part and $400+ for labor. In contrast, independent shops or mobile mechanics may offer the same service for $180 to $250, especially if you supply the parts yourself.

DIY Replacement

If you're comfortable with car repairs, replacing a fog light bulb yourself can save money. Fog light bulbs typically cost between $15 and $35, depending on the bulb type. And the installation process usually requires basic tools. We’ll walk you through the process later in this article.

However, if the replacement involves removing the bumper or dealing with complex wiring, it might be best to seek professional help.

Factors Affecting the Fog Light Replacement Cost

These numbers are only averages, though, and don’t include taxes, shop fees, or any related repairs that might come up during the job.

Several factors can drive that price higher or lower. The make and model of your car plays a big role. Some vehicles, like the Honda Civic or Ford Focus, have fairly accessible fog lights, while others require partial disassembly of the front bumper—significantly increasing labor time.

The type of bulb matters too. Halogen fog light bulbs are usually cheaper, while LED fog light bulbs offer better performance and cost more.

Always get multiple quotes and weigh the cost of parts from online retailers versus what your mechanic or dealership offers.

Related Guide: How Much Does Headlight Bulb Replacement Cost?

Diagnosing Fog Light Issues

Most fog light failures start with removing the bulb from behind the bumper cover. Once it’s out, mechanics will check if the filament inside the bulb has snapped—a clear sign the bulb has burned out.

But if the bulb looks intact, the next step is testing the socket to make sure it’s getting power. If there’s no voltage, the issue could lie elsewhere in the electrical circuit, such as a damaged wire or a bad relay.

If both fog lights have stopped working at the same time, the problem is often with the switch or a shared fuse.

Can You Replace a Fog Light Bulb Yourself?

In many cases, yes. You’ll usually need a screwdriver, gloves, and the right replacement bulb. Some vehicles give you easy access through the wheel well or from underneath the bumper, while others might require removing panels or even the bumper itself.

Here’s how to change fog light bulb:

Step 1: Turn off the car and let it cool down.

Step 2: Access the fog light bulb from underneath the vehicle or through the wheel well (check your owner’s manual for the easiest route).

Step 3: Remove the old bulb by twisting and disconnecting it from the housing.

Step 4: Disconnect the wiring harness gently.

Step 5: Install the new bulb, reconnecting the harness first and then securing it in place.

Step 6: Test the lights before reassembling any panels.

Important: Never touch the glass of a halogen bulb with your bare hands. Oils can cause it to overheat and fail early.

If the fog light housing is cracked or the mounting hardware is broken, the job may be more complex. Removing the bumper or dealing with electrical connections could make it worth having a professional handle the repair.

Get Quality Fog Light Bulbs at a Great Price

If you're shopping for replacement bulbs, SEALIGHT offers high-performance LED fog light bulbs that are brighter, longer-lasting, and more energy-efficient than traditional halogen options.

You can get a pair of high quality LED fog light bulbs for just $21.99 at SEALIGHT—great value without compromising quality. SEALIGHT also offers a wide selection of LED bulbs for headlights, interior lights, brake lights, reverse lights, turn signals, and more.

Finding the right fit is quick and easy. Just use the online bulb finder tool by entering your car’s year, make, model, and engine to ensure compatibility and avoid costly mistakes.

Visit SEALIGHT.com to browse bulbs by vehicle and find the perfect match for your car.