How to Replace 2015 Acura TLX Headlight Bulb - DIY Guide

Last Updated on 2025-09-07

What’s up bro, making sure your headlights are clean and functional isn’t only a requirement but a vital component to your visibility at night. Believe me, nobody wants to be that individual who has to try and guess what they are looking at or get stopped by the cops since you are missing a bulb. In this guide, we will go over how to clean and replace the headlights for a 2015 Acura TLX.

When Should You Replace Your Acura TLX Headlight Bulbs?

You might not think much about your headlights until one burns out, but there are a few signs to watch for before you’re stuck in the dark:

If your lights look dim or flicker, they’re on their way out.
One side is weaker than the other – yeah, that’s a dead giveaway.
If you see a weird yellowish tint, your bulbs are probably getting old.
Obviously, if one goes out completely, it’s time to swap it.

Halogen bulbs usually last around 1,000 hours, while HID (Xenon) ones can push it up to 2,000. If you’ve got LED headlights, those can last even longer, but here’s the kicker – if one burns out, you might have to replace the whole assembly, and that can get expensive real quick.

If you’re the type to hit potholes at full speed or take your TLX on rough roads, you might be shaking those bulbs loose sooner than expected. So keep an eye on them.

How Much Does It Cost to Replace a Headlight?

Alright, let’s talk money. If all you need is a basic halogen bulb, you’re looking at around 30 bucks for the part. But if you don’t want to get your hands dirty, a shop will charge about $95 for labor, so you’re looking at $127 total.

Now, if you’ve got HID or Xenon headlights, brace yourself – it can run anywhere from 400 to 700 bucks, depending on your trim. And if you’ve got LED headlights, some unlucky TLX owners have had to cough up $1,700 because the entire assembly had to be replaced. Yeah, that’s a real gut punch.

Your exact cost depends on things like where you live, the model of your TLX, and whether you go to a dealership or an independent shop. But if you can do it yourself, you’re saving a nice chunk of change.

How to Replace a 2015 Acura TLX Headlight Bulb Like a Pro

Don’t worry, man – this isn’t rocket science. You don’t need a full mechanic’s toolbox to get it done. Here’s what you’ll need:

A new bulb (make sure it’s the right type)
A screwdriver
A pair of gloves (seriously, don’t touch the bulb with your bare hands)
Safety glasses (optional, but better safe than sorry)

Now, here’s how you do it:

Make sure the car is off and cooled down. You don’t want to burn yourself like an idiot.
Pop the hood. Get it open and secure it in place.
Find the headlight assembly. Look right behind the headlight housing – you’ll see the bulb connection.
Remove the old bulb. Twist it counterclockwise and pull it out. If it doesn’t come out easily, don’t force it or you’ll break something. If there’s rust in the socket, you might need a little help from WD-40 or a pro.
Install the new bulb. Don’t touch the glass part – use gloves or a paper towel. Line it up and twist it back in place.
Test it out. Turn your lights on and make sure it’s working.
Close the hood. And boom, you’re good to go.

If you ever feel unsure, check a YouTube video or hit up a buddy who knows their way around cars. No shame in that.

How to Pick the Right Headlight Bulb for Your TLX

Before you put the new bulb in, confirm that it’s compatible with your TLX. The easiest way to do this is by looking in your owner’s manual because it will tell you the exact type you need. If that isn’t available, try checking the old bulb for markings. An alternate option is to use an online bulb finder that most automotive websites provide, too. But if these solutions do not help, walk into any parts store and ask the employees. They are familiar with these components and will be more than happy to assist you.

If you have plans to retrofy with high intensity discharge or light emitting diodes, ensure that you do adequate research beforehand. Not every TLX can adapt to simple swaps of bulbs without extra wiring and resistors, and none of us want obnoxious error codes on the dashboard. Seeking out some advice from a mechanic or experienced person in headlight adaptations can help avoid getting a useless setup instead.

How to Keep Your TLX’s Headlights in Top Shape

If you want your headlights to last, you’ve got to take care of them. A good habit is to clean them regularly since dirt and oxidation can dim your lights over time. Also, keep an eye out for condensation inside the headlight housing – if moisture builds up, it means the seal might be bad, and that can lead to electrical issues. When handling new bulbs, always wear gloves or use a cloth since the oils from your fingers can shorten their lifespan. Lastly, inspect the wiring from time to time because loose connections or corroded sockets can cause flickering or total failure. A little maintenance now will save you from costly replacements later.

Common Questions About Replacing Acura TLX Headlights

Do I need to disconnect the battery before replacing a headlight?

Not necessarily, but it’s a good idea. Your headlights are part of the electrical system, so disconnecting the battery prevents any short circuits or surprises.

Should I replace both headlights at the same time?

Technically, you don’t have to, but it’s smart. If one’s dying, the other probably isn’t far behind. Replacing both keeps them evenly bright and saves you from doing the job twice in a short period.

What’s the worst mistake people make when changing bulbs?

Touching the bulb with bare fingers – seriously, don’t do it.
Forcing the bulb in and breaking the socket.
Using the wrong bulb type and wondering why their lights don’t work.
Forgetting to test the light before putting everything back together.

Final Thoughts

Honestly, taking on the task of replacing a headlight on your 2015 Acura TLX isn't as complicated as it seems. If you have some spare time, this is a DIY project that could help you save some money. Just be sure not to scratch the part, use the properly fitting bulbs, take your time so you don’t rush the steps, and follow the protocol. If at any point you need assistance, don’t hesitate to ask, that’s way better than making things worse.

So pick up a bulb, change it out, and get on the road with full confidence. Have a good day, and stay safe!