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 festoon style light bulb part number is DE3175 which is available from various manufacturers such as Sylvania, GE, Bosch and Philips.

If you would like to have a brighter and much longer lasting cargo area light, install a DE3175 LED bulb.

The only tool needed to access and replace the light bulb is a small flat head screwdriver or a plastic pry bar tool.

The first step is to open the trunk lid. Then look on the ceiling of the cargo area to locate the light housing.

The housing is situated near the two trunk lid torsion bars.

Use the blade of your flat head screwdriver or a plastic pry bar tool to gently push in the release tab on the right (passenger) side of the light housing.

Push in the release tab on the black plastic electrical connector before sliding it straight off the base of the light housing.

Allow the light housing to cool off for at least a minute or two.

Set the rear cover aside in a safe place.

Gently pull back the flexible brass metal electrical contact to release the old light bulb from the socket.

Make sure the new bulb is securely attached between the two electrical contacts.

If you would like to have a brighter cargo area light, install a compatible replacement DE3175 LED light bulb.

Slide the electrical connector straight in to the socket on the base of the light housing.

Then gently snap in the plastic retaining clip on the right (passenger) side of the housing to secure it into place.

If the new light bulb didn't turn on as soon as you pushed in the electrical connector, re-activate the interior lights by pressing the "Unlock" button on the key fob or close and open the trunk.

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.

Be sure to write down the bulb change in your vehicle's service records.

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