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Hyundai Tucson Vanity Mirror Light Bulb Replacement Guide
How to change a burnt out vanity mirror light bulb in a 3rd generation 2016, 2017 and 2018 Hyundai Tucson SUV.

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2018 Tucson Sun Visor
Vanity Mirror Light Housing
This automotive maintenance tutorial was specifically written to assist owners of the third generation (2016, 2017, 2018 and the revised 2019 and 2020 model years) Hyundai Tucson SUV in changing a burnt out light bulb in the housing attached to the headliner above the sun visor and vanity mirror.

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

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

For brighter vanity lights, install some DE3175 LED bulbs.

The only tool needed to access and replace the light bulbs is a small plastic pry bar tool or a flathead screwdriver.

Insert Tool By Switch
Pry Out Light Housing
To prevent from tearing the fabric headliner or scratching the plastic light housing, you could either cover your screwdriver with a micro fiber cloth or use a plastic pry bar tool.

Insert the tool in between the headliner and the side of the light housing with the "On/Off" switch.

Gently pry out the light housing to release the metal retaining clip.

Carefully pull the light housing out of the opening in the headliner.

Push In Release Tab
Power Plug Disconnected
Push in the release tab on the black plastic electrical connector before sliding it straight off the base of the light housing.
Pull Back Electrical Contact
Old Light Bulb Removed
Gently pull back the metal electrical contact to release the old light bulb from the socket.

Pull the old light bulb straight out of the socket.

KHA 12V8W 47K18C
Install New Light Bulb
The OEM light bulb in this 2018 Tucson was marked as Hyundai / Kia part number KHA12V5W 17K10B.

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


New Light Bulb Installed
Push On Electrical Connector
Make sure the new light bulb is securely installed into the socket.

Push the power plug straight on to the electrical contacts on the end of the light housing.

The power plug should "click" securely into place.

Re-Insert Wires First
Push In Retaining Clip
Then re-insert the wires into the opening in the headliner.

Firmly snap the metal retaining clip on the other side of the housing into the headliner.

Light Housing Replaced
Test New Light Bulb
To test the new light bulb, move the "On / Off" rocker switch to the "On" position.

If you installed an LED bulb and it doesn't work at first, you may need to remove it, rotate it 180 degrees and push it back into the socket.

Some LED bulbs are "polarized" and will only work when installed in the correct orientation.

For more, check out all of my 2016-2018 Hyundai Tucson DIY Repair & Maintenance Guides.

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