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Hyundai Elantra Trunk Light Bulb Replacement Guide
How to change a burnt out cargo area light bulb in the trunk of a 6th generation 2017 to 2020 Hyundai Elantra.

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2018 Elantra Trunk Light
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Cargo Area Light Housing
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Push In Release Tab
This automotive maintenance tutorial was specifically written to assist owners of the 6th generation (2017, 2018, 2019, 2020 and maybe also the 2021 model year) Hyundai Elantra sedan in changing a burnt out cargo area light bulb located in the trunk.

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

The compatible replacement festoon style light bulb is part number DE3175.

If you would like to have a brighter trunk light, install a DE3175 LED bulb.

The only tool needed to remove the light housing is a small flat head screwdriver or a plastic pry bar tool.

Locate the small release tab for the retaining clip on the right (passenger) side of the light housing.

Gently push in the plastic tab to release the retaining clip and pull down the right side of the housing from the ceiling of the trunk.



 

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Pull Out Light Housing
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Push In Release Tab
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Pliers - Stiff Release Tab
Remove the left side of the light housing from the roof of the cargo area.

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

If the release tab is very stiff and hard to push down, use a pair of needle nose pliers.

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Power Plug Detached
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Pry Off Rear Cover
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Black Cover Removed
Use a small flat head screwdriver to gently pry the black plastic cover off the top of the light housing.

Set the black plastic cover aside in a safe place.

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Pull Out Old Light Bulb
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Old Light Bulb Removed
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Push In New Light Bulb
If the old light bulb was recently turned on, allow it to cool off for a few minutes. Be careful when you remove the old light bulb since it might still be hot enough to burn your fingers.

Grasp the old light bulb with your thumb and forefinger before pulling it straight out of the socket.

Try to avoid bending or damaging the metal electrical contacts.

Push the new festoon style number DE3175 light bulb straight into the socket.

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

The OEM (original equipment manufacturer) light bulb was marked as part number KHA12V5W 46107F.

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Line Up Back Cover
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Light Housing Assembled
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Slide On Power Plug
Line up the black plastic cover over the rear of the light housing.

Gently pop the rear cover back into place.

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

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

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Re-Insert Wires First
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Pop In Retaining Clip
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Test New Light Bulb
Re-insert the wires on the left (driver) side of the light housing into the opening in the ceiling of the trunk first.

Then gently pop in the retaining clip on the right (driver) side of the light housing.

If the new light bulb didn't turn on as soon as you re-attached the electrical connector, re-activate the interior lights by pressing the "Unlock" button on the key fob.

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

For more, please check out all of my 2017-2020 Hyundai Elantra DIY Repair & Maintenance Guides.
 

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