2018 Hyundai Elantra Headlight Bulb Upgrade Advice - Hyundai Elantra Forum
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post #1 of 3 (permalink) Old 07-10-2018, 01:44 PM Thread Starter
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2018 Hyundai Elantra Headlight Bulb Upgrade Advice

Hello All,

Iím brand new to this forum as I just purchased a 2018 Elantra Value Edition. I am not satisfied at all with the halogen headlights as my previous Mazda had Hid. I knew Iíd want to upgrade them to an aftermarket bulb kit. I am wondering if LED or HID would be better? I had an HID kit in my 2012 Kia Optima that was great for awhile then randomly started shutting off while driving. Also I noticed the Elantra indicates if the bulb is blown out, and with the lower current draw Iím guessing this could be an issue. Could someone please direct me to a decent output LED or HID kit thatís going to be reliable and have no bulb outage errors?

Thank you so much,

-Nick
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post #2 of 3 (permalink) Old 08-18-2018, 07:28 PM
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For LEDs, there WILL be bulb outage errors, but it is not that bad.

I have tried with three different LEDs, hikari, opt7, and oxbeam. All of them show error. There is no way out of those errors except HID.
Code:
https://www.amazon.com/gp/product/B01LCE1AY2/
https://www.amazon.com/gp/product/B00VNBDOV2/
https://www.amazon.com/Auxbeam-Headlights-Headlight-Conversion-Bridgelux/dp/B01KFBPAJO/
I've had these amazing OPT7 ones for couple of months now on my 2018 elantra SEL.
Code:
https://www.amazon.com/gp/product/B00VNBDOV2/
These are as bright as my HID on a mazda, but whiter, although both are 6000K. HID link below for comparison.
Code:
https://www.amazon.com/OPT7-Bolt-55w-Hi-Power-H11/dp/B00CC2ZUHM/
Although there are bulb out warning in the dash with LEDs, I've managed to ignore them. Initially it was irritating, but withing a week, I started not noticing it any more. With just a click on the ok button on the steering (as soon as I switch on the car), the warning goes away and my default speedometer comes back on.

I supposed you could use HIDs, but that would require drilling through the dust cap, and I don't want to scratch any OEM item.

I'd strongly suggest you to try the LED for a week and see if you can be habituated with the warnings.

Last edited by piby2; 08-18-2018 at 07:32 PM.
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post #3 of 3 (permalink) Old 08-27-2018, 11:22 PM
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As mentioned, LEDs will give bulb out warning on 2018 Elantras, because this car definitely has a system check. The car computer probably checks for current drawn and sends a warning if low amount of current is drawn. Therefore adding the LED gives a dash warning. So I added this resistor to my low beam 9005 bulb, and the warnings are gone now.

Code:
https://www.amazon.com/gp/product/B01N3B0NLE/
The installation was easy plug and play, add the resistor to the car adapter, then add the bulb adapter to the resistor, zip-tie everything and done.

The resistor get extremely hot, so I screwed it to a metal plate. Fortunately my 2018 elantra has a couple of holes nearby for screwing. Just to be sure, I will add some heat resistant tape as well.

Code:
https://www.amazon.com/gp/product/B072Z92QZ2/
But the low beam dust cap needs to be removed. I plan to buy a pair of spares, and drill small hole to get the wirings through it.
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