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Hyundai Tucson Headlight Bulbs Replacement Guide
How to change a burnt out headlight bulb in a third generation 2016, 2017 and 2018 Hyundai Tucson SUV.

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2018 Tucson Headlights
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Low Beam - Outer Edge
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Black Plastic Dust Cap
This automotive maintenance tutorial was specifically written to assist owners of the third generation (2016, 2017, 2018 plus the updated 2019 and 2020 model years) Hyundai Tucson SUV in changing a burnt out low beam, high beam, front turn signal or side marker light bulb in the headlight housings.

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 light bulb part numbers as as follows: Low Beam # H7, High Beam # H7, Front Turn Signal 2357NA (or 2357A & PY28/8W) and Side Marker # 2825 (or W5W).

No tools are needed to access and replace any of the light bulbs in the driver or passenger side headlight assemblies.



 
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1/4 Turn Counterclockwise
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Dust Cover Removed
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Low Beam Connector
The first two steps are to open the hood and then move to the side of the SUV with the burnt out headlight bulb.

The low beam light bulb is located near the outer edge of the headlight assembly. The low beam lens looks like a cloudy eye.

Reach in behind the assembly and rotate the round black plastic dust cover 1/4 turn in the counterclockwise direction before pulling it straight off.

Set the dust cap aside in a safe place.

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1/4 Turn Counterclockwise
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Pull Out Old Low Beam
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Attached To Connector
Rotate the black plastic socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.
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Pull Off Old Low Beam
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Old Low Beam Detached
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Push On New Low Beam
Carefully pull the old low beam light bulb out of the electrical socket on the black plastic bracket.

You may need to gently wiggle and old low beam bulb back and forth while pulling it out of the socket.

Try to avoid touching the glass part of the new halogen light bulb with your fingers or anything greasy in the engine bay. If you do get the new bulb dirty, wipe it clean with a paper towel and some rubbing alcohol.

Push a new number H7 light bulb straight into the socket.

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New Bulb In Socket
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Empty Bulb Housing
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1/4 Turn Clockwise - Lock
Double check that the new low beam bulb is securely attached to the black plastic bracket and fully seated in the socket.

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

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Line Up Round Cover
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1/4 Turn Clockwise
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High Beam - Middle
Twist on the round black plastic dust cover 1/4 turn in the clockwise direction to secure it into place.

The high beam light is located near the center of the headlight assembly.

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Twist Off Dust Cover
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Dust Cover Removed
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Old High Beam Bulb
Remove the round black plastic dust cap on the back of the headlight assembly by twisting it off 1/4 turn in the counterclockwise direction.

Set the dust cover aside in a safe place.

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Pull Off Power Plug
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Metal Retaining Arm
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Push In & Move Left
Carefully pull the black plastic electrical connector straight off the base of the old high beam bulb.

The high beam bulb is held in place to the housing by a metal retaining arm.

Push the top part of the arm in and then out to the left to unhook it from the metal tab.



 

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Arm Released From Hook
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Pull Out Old High Beam
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Install New High Beam
Swing down the metal retaining clip to release the old high beam bulb.

Pull the old high beam bulb straight out of the socket.

Avoid touching the glass part of the new halogen bulb with your fingers or anything greasy in the engine bay. If you do get it dirty, wipe it clean with a paper towel moistened with rubbing alcohol.

Having grease or dirt on the halogen bulb can cause a "hot spot" that will either reduce the bulb's life or cause it to shatter.

Push a new number H7 light bulb straight into the socket.

It can only be inserted in one orientation with the metal tab located at the bottom of the bulb.

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Re-Attach Retaining Arm
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Metal Bar Secured
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Push On Electrical Connector
Swing up the retaining arms over the new high beam bulb.

Push the top of the bar towards the front of the car and swing it over to the right to secure it in place behind the metal tab.

Double check that the metal retaining clip and the new high beam bulb are securely in place.

Push the black plastic power plug straight on to the base of the new high beam bulb.

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Twist On Dust Cover
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Turn Signal - Inner Corner
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Large Black Plastic Tab
Replace the dust cap by twisting it on 1/4 turn in the clockwise direction.

The front turn signal light bulb is located near the inner edge of the headlight housing closer to the center of the engine bay.

Reach in behind the headlight and locate the long black plastic tab on the socket holder.

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1/4 Turn Counterclockwise
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Pull Out Bulb Socket
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Front Turn Signal Socket
Rotate the black plastic tab 1/4 turn in the counterclockwise direction before pulling the socket straight out of the housing.
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Push Down & 1/4 Turn CC
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Install New Light Bulb
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Empty Bulb Housing
Push the old turn signal light bulb down into the socket and rotate it 1/4 turn in the counterclockwise direction before pulling it straight out.

Push a new amber colored number 2357NA (also known as part numbers 2357A or PY28/8W) straight into the socket and rotate it 1/4 turn in the clockwise direction to secure it into place.

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1/4 Turn Clockwise - Lock
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Side Marker - Outer Edge
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Small Black Bulb Socket
Re-insert the front turn signal bulb and socket into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

The front side marker light is located at the far outer edge of the housing.

Locate the small black plastic bulb socket with the tab on the end of it.

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1/4 Turn Counterclockwise
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Side Marker Bulb Socket
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Pull Out Old Light Bulb
Rotate the tab at the end of the bulb socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

Pull the old light bulb straight out of the socket.

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Push In New Light Bulb
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Empty Bulb Housing
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1/4 Turn Clockwise - Lock
Push a new number 2825 (or W5W) miniature wedge base light bulb straight into the socket.

If you would like to have brighter side marker lights, install some compatible replacement 2825 LED bulbs.

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

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Side Marker Installed
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Test New Headlight Bulbs
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Testing New High Beam
To test the new light bulbs, turn on the headlights, flash the high beams and activate the hazard signals.

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

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

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