Owners of other Kia, Hyundai or Genesis vehicles such as the Niro, Sportage, Sedona, Telluride, Sorento, Rio, Forte, Soul, K900, Cadenza, K5, Stinger, Tucson, Santa Fe, Kona, Palisade, Elantra, Sonata, Accent, Veloster, Ioniq, Nexo, Venue, G70, G80 and G90 may also find these DIY instructions to be helpful.

The compatible replacement light bulb part numbers are as follows: Low Beam # 9005, High Beam # 9005 and Front Side Marker # 2825 (also known as W5W).

If you would like to have brighter and longer lasting headlight bulbs, choose some 9005 LED and 2825 LED bulbs.

No tools are required to access and replace any of the bulbs in either the driver side or passenger side headlight housings.

(Check out my 2016-2020 Kia Optima Front Turn Signal Light Bulb Replacement Guide if you need to change a burnt out front turn signal light bulb in the separate housing located near the bottom of the front bumper cover. On some trim levels the lower housing may also contain the fog light bulb.)

The first two steps are to open the hood and then move to the side of the vehicle with the burnt out light bulb.

Reach in behind the headlight housing and remove the round black plastic dust cap by rotating it 1/4 turn in the counterclockwise direction before pulling it straight off.

Set the dust cover aside in a safe place.

If you have trouble removing a stubborn or stuck dust cover, try gently tapping one of the ridges with a flat head screwdriver and a small hammer to loosen the rubber o-ring gasket from the plastic housing.

The o-ring gasket on the cover may have dried out or become attached to the plastic due to heat or extreme cold.

Slide the power plug straight down off the base of the old low beam light bulb.

Rotate the base of the old light bulb 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

If you do get the bulb dirty, clean it with a paper towel and some rubbing alcohol.

Install the new number 9005 bulb into the housing and rotate it 1/4 turn in the clockwise direction to lock it into place.

If you would like to have brighter low beam headlights that will also last much longer than traditional halogen bulbs, install some compatible replacement 9005 LED bulbs.

Be sure to read the directions for the LED headlight bulbs if you buy a pair. They may need to be adjusted (rotated) so that the LEDs are pointing in the correct orientation for the proper beam spread.

Replace the dust cap by twisting it on 1/4 turn in the clockwise direction.

Remove the dust cap by rotating it 1/4 turn in the counterclockwise direction.

Set the dust cover aside in a safe place.

Gently pull back on the release tab before sliding the electrical connector straight off the base of the old light bulb.

If you do get the new bulb dirty, wipe it clean with a paper towel and some rubbing alcohol.

Push the electrical connector on to the base of a new number 9005 high beam bulb.

You should feel or hear the power plug "click" securely into place.

Install the new bulb into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

If you would like to have brighter high beam bulbs, install some compatible replacement 9005 LED bulbs.

The front side marker light is situated at the outer edge of the headlight assembly.

Rotate the tab 1/4 turn in the counterclockwise direction to unlock the socket before pulling it straight out of the housing.

If you have trouble removing an old stubborn or stuck bulb due to corrosion (rust) or debris such as sand, try gently wiggling the bulb back and forth while pulling it straight out.

Push a new number 2825 miniature wedge base light bulb straight into the socket.

For brighter and longer lasting front side marker lights, install some compatible replacement 2825 LED bulbs.

Re-insert the bulb socket into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

Tip - If you installed an LED bulb and it doesn't work, try removing the bulb from the socket, rotate it 180 degrees and push it back into the socket again. Some LED bulbs are "polarized" and will only work when the "+" positive and "-" negative electrical contacts are in the correct orientation.

Check out my 2016-2020 Kia Optima Front Turn Signal Light Bulb Replacement Guide if you need to change a burnt out front turn signal light bulb in the separate housing located near the bottom of the front bumper cover. On some trim levels the lower housing might also contain a fog light bulb.

Please check out all of my 2016-2020 Kia Optima DIY Repair & Maintenance Guides.