How to Replace Both Headlight Bulbs on a 2016-2019 Kia Optima (Low Beam & High Beam) (Trim: SX)
Step-by-step bulb type check (halogen/HID/LED), required tools/parts, and safety tips for both sides
How to Replace Both Headlight Bulbs on a 2016-2019 Kia Optima (Low Beam & High Beam) (Trim: SX)
Step-by-step bulb type check (halogen/HID/LED), required tools/parts, and safety tips for both sides for 2016, 2017, 2018, 2019
đź”§ Optima - Headlight Bulb Replacement
On your Optima, the exact “headlight bulb” replacement procedure depends on which headlight system you have (halogen, HID/Xenon, or full LED). Some LED headlamps do not use replaceable bulbs—you replace the whole headlamp or LED module instead.
Difficulty Level: Intermediate | Estimated Time: 0.5-1.5 hours
⚠️ Safety & Precautions
- ⚠️ Turn lights OFF and let the headlamp cool before touching anything.
- ⚠️ If equipped with HID/Xenon, the igniter can produce high voltage—do not unplug/plug components with power on.
- ⚠️ Don’t touch any bulb glass with bare fingers; skin oil can shorten bulb life.
- ⚠️ Support the hood securely; avoid leaning on hot engine parts.
đź”§ Required Tools
You'll need the following tools for this repair:
- Nitrile gloves
- Safety glasses
- Flashlight
- Trim clip removal tool
- Phillips screwdriver
- 10mm socket
- 1/4" ratchet
- 6" extension for 1/4" ratchet
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Headlight bulbs (correct type for your Optima’s headlamp system) - Qty: 2
- Dielectric grease - Qty: 1
đź“‹ Before You Begin
- Park on level ground, turn the headlights OFF, and open the hood.
- A trim clip removal tool is a small pry tool used to pop plastic clips without breaking them.
- Please answer these 2 quick questions so I can give you the exact, trim-accurate steps:
- Are you replacing the low beams, the high beams, or both?
- Do your headlights appear to be LED (very white, crisp, often no “bulb” access cap) or do they have a replaceable bulb with a rear dust cap? If you can, tell me what the bulb label says (example: H7, 9005, D3S) without removing anything.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Confirm the headlamp type (needed before disassembly)
- Use a flashlight to look behind each headlamp for a round rear cover/dust cap and a wiring connector.
- If there’s no service cover and the back looks like a sealed housing with a large module and multiple connectors, you may have LED headlamps (no bulb replacement).
- Reply with what you see (dust cap present: yes/no), and which beams you’re replacing.
Step 2: (Pending) Provide exact Optima procedure
- Once you answer the two questions above, I’ll give you the exact Optima steps (access method, bulb type, and any clip/fastener locations) for both sides.
âś… After Repair
- Turn the headlights ON and verify left and right brightness match.
- Check high beam/low beam function (whichever you replaced).
- If a bulb doesn’t light, turn lights OFF and re-seat the connector.
đź’° DIY vs Shop Cost
Shop Cost: $120-$350 (parts + labor)
DIY Cost: $30-$240 (parts only)
You Save: $90-$110 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.
Guide for Headlight Bulb replace for these Kia vehicles
| Year Make Model | Sub Model | Engine | Body Style |
|---|---|---|---|
| 2019 Kia Optima | EX | - | - |
| 2019 Kia Optima | Hybrid EX | - | - |
| 2019 Kia Optima | LX | - | - |
| 2018 Kia Optima | EX | - | - |
| 2018 Kia Optima | Hybrid EX | - | - |
| 2018 Kia Optima | LX | - | - |
| 2018 Kia Optima | LX 1.6T | - | - |
| 2017 Kia Optima | EX | - | - |
| 2017 Kia Optima | Hybrid EX | - | - |
| 2017 Kia Optima | LX | - | - |
| 2017 Kia Optima | LX 1.6T | - | - |
| 2016 Kia Optima | EX | - | - |
| 2016 Kia Optima | Hybrid | - | - |
| 2016 Kia Optima | Hybrid EX | - | - |
| 2016 Kia Optima | LX | - | - |
| 2016 Kia Optima | LX 1.6T | - | - |


















