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Hyundai Elantra Headlight Bulbs Replacement Guide
How to change a burnt out low beam, high beam, front turn signal or side marker light bulb in a 2017 to 2020 Elantra.

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2018 Elantra Headlights
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Low Beam Headlight
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Rear of Headlight Housing
This automotive maintenance tutorial was specifically written to assist owners of the 6th generation (2017, 2018, 2019, 2020 and perhaps also the 2021 model year) Hyundai Elantra sedan in changing a burnt out low beam, high beam, front turn signal or front side marker light bulb in either the driver or passenger side headlight assemblies.

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 light bulb part numbers are as follows: Low Beam # 9005, High Beam # H7, Front Turn Signal # 2357A and Front Side Marker # 2825 (or W5W).

No tools are required to access and replace any of the light bulbs. A flat head screwdriver might be helpful for turning the side marker bulb socket.

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

The low beam light is situated near the outer middle area of the headlight assembly. The low beam light's lens resembles a cloudy eye.



 

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Twist Off Dust Cover
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1/4 Turn Counterclockwise
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Low Beam Removed
Reach in behind the headlight assembly and twist off the round black plastic dust cover 1/4 turn in the counterclockwise direction.

Set the dust cap aside in a safe place.

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

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Push Down Release Tab
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Power Plug Disconnected
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Old Halogen Bulb
Push down the release tab on the electrical connector before sliding it straight off the base of the old low beam light bulb.
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Sylvania Low Beam
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Lower In New Bulb
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Push On Power Plug
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 the electrical connector on to the base of a new number 9005 low beam light bulb.

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

You should feel or hear the power plug "click" securely on to the base of the new light bulb.

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1/4 Turn Clockwise - Lock
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Replace Dust Cap
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High Beam - Center
Install the new low beam light bulb into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

Replace the round black plastic dust cover by rotating it 1/4 turn in the clockwise direction.

The high beam light is located near the middle of the headlight housing. The high beam light bulb is fully exposed and can easily be seen from the front of the headlight unlike the low beam which is behind a cloudy lens cover.

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Round Plastic Dust Cover
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Remove Counterclockwise
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High Beam Bulb Exposed
Reach in behind the headlight housing and rotate the round black plastic dust cap 1/4 turn in the counterclockwise direction.

Set the dust cap aside in a safe place.

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1/4 Turn Counterclockwise
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High Beam Bulb Removed
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Pull Bulb Out of Socket
Rotate the high beam bulb's socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

Carefully pull the black plastic socket off the base of the old high beam light bulb.

You may need to wiggle and rock the old light bulb from side to side to separate it from the socket.

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Old High Beam Light Bulb
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Electrical Connector
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Push On New Light Bulb
Avoid touching the glass part of the new halogen light bulb with your fingers. If you do get the new bulb dirty, clean it with a paper towel and some rubbing alcohol.

Push a new number H7 light bulb on to the electrical connector.

If you would like to have brighter high beam lights, install some compatible replacement H7 LED bulbs.

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Empty Bulb Housing
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1/4 Turn Clockwise
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New High Beam Installed
Insert the new high beam light bulb into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.



 

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Replace Dust Cap
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Turn Signal - Inner Corner
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Black Plastic Bulb Socket
Replace the dust cover for the high beam light bulb by twisting it on 1/4 turn in the clockwise direction.

The front turn signal light bulb is located at the inner corner of the housing closer to the center line of the car.

Locate the round black plastic bulb socket.

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1/4 Turn Counterclockwise
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Signal Socket Removed
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Push In - 1/4 Turn CCW
Rotate the base of the bulb socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

Push the old light bulb down into the socket and rotate it 1/4 turn in the counterclockwise direction before pulling it straight out of the socket.

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Install New Light Bulb
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Empty Bulb Housing
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1/4 Turn Clockwise - Lock
Push a new bayonet style number 2357A amber colored light bulb straight down into the socket and rotate it 1/4 turn in the clockwise direction to secure it in place.

If you would like to have brighter

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

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Side Marker - Outer Edge
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Black Plastic Cover
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1/4 Turn Counterclockwise
The front side marker light is located near the outer corner of the headlight housing.

Locate the small round black plastic cover for the side marker light bulb socket.

Rotate the cover 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

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Plastic Cover Removed
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Small Bulb Socket Exposed
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Screwdriver Turn Socket
Set the cover aside in a safe place.

Rotate the small side marker bulb socket 1/4 turn in the counterclockwise direction to release it from the housing.

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Turn Counterclockwise
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Bulb Socket Removed
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Pull Out Old Light Bulb
If you have trouble reaching the side marker bulb socket, use a flat head screwdriver to rotate the socket in the counterclockwise direction.

Remove the bulb socket from the housing.

Pull the old light bulb straight out of the socket.

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

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

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Push In New Light Bulb
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1/4 Turn Clockwise
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Plastic Side Marker Cover
Re-insert the bulb socket into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

Line up the plastic cover with the opening for the side marker bulb socket.

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1/4 Turn Clockwise - Lock
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Plastic Cover Replaced
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Test New Headlight Bulbs
Rotate the plastic cover 1/4 turn in the clockwise direction to secure it into place.

To test the new light bulbs, turn on the headlights, activate the hazard signals and flash the high beams.

Tip - If you installed any LED bulbs and they don't work, try reversing the electrical connectors or pull the light bulb out of the socket and rotate it 180 degrees before pushing it back into the socket. 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.

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

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