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  1. 4th Generation Optima (2016 - 2020)
    Hello, My passenger side headlight (low beam) has burnt out and I can't seem to get the darn thing out of its housing. I can get the lid off, I unscrewed and moved the coolant tank so I'd have a bit more room, but I cannot--for the life of me--get the burnt out bulb out of the housing to...
  2. 4th Generation Optima (2016 - 2020)
    Is there anyway to change the color of the bulbs. I looked at the back of my unit online and it looks sealed. I would like to change to a LED bulbs Also is the shifter a regular 194 bulb with a red film or is it a special bulb?
  3. 3rd Generation Optima (2011 - 2015)
    Hello, This is my first post so please go light on me, although open to constructive criticism in terms of how to categorize or what info to include from the jump. I'll try and keep this short. I failed Virginia State Inspection because my front blinker lamps do not stay on per my DRLs or my...
  4. 3rd Generation Optima (2011 - 2015)
    Hello Everyone, I was on my second set of tail lights after the dealer replaced the originals under warranty for moisture and some LEDs being out. Unfortunately, water started getting into my driver side tail light again after a couple years, but I am well past my warranty period now so I would...
  5. New Member Introductions
    How difficult isit to replace a map bulb in a 2017 Optima? The owners manuel says the car has to brought it to a Kia dealer, is it really that hard to replace?
  6. Interior and Exterior Modifications
    Hi folks. I have looked at a number of threads here without actually seeing the answer i was looking for. This one is hopefully pretty simple. I am going to change my halogen low beams out with some LED lights. I understand that it is easier to remove the cap/bulb on the passenger side by...
  7. Interior and Exterior Modifications
    I purchased a $30 item to turn LED tail lights into turn signals. I never understood why auto manufacturers put old style amber turns with LED brake/parking lights . Anyhow the vids and pics are below. If you do this mod the left side has two brake wires (pink) and the turn is white. You will...
  8. DIY Projects
    I've finally gotten around to changing out my HID system into Morimoto XB35 HID kit from K5optima store and I am having 2 fitment issues.... 1st problem i'm having is that I got into an accident couple of years ago and I've had my driver side headlight replaced. The shop that my insurance used...
  9. The Service Center
    Hey guys I have a 2012 ex the amber parking light and the taillight is out. What size are these or rather what’s a good place to get these where do I get them? Thanks
  10. 3rd Generation Optima (2011 - 2015)
    I have a 2015 EX, has anyone replaced the standard bulbs for LEDs? I replaced the bulbs on my old 05 Spectra with Zevo bulbs, but if I remember correctly I needed to put some sort of adapter on it. Is that needed on these newer cars? I'd eventually like to change all the bulbs to LEDs (with...
  11. 4th Generation Optima (2016 - 2020)
    I've looked all over, but for the life of me I can't find how to remove the license plate bulbs and vanity bulbs in my 2016 Optima. I'm afraid of breaking the housings or messing up the car. Anyone know where there's a walk through for the 2016+ models? Thank you in advance.
  12. The Service Center
    Greetz! I'm new to Optima ownership and have just purchased a 2011 Optima with 57K on it. I've run into a minor problem and am hoping someone here has the information I'm looking for. The passenger side marker light was out and I followed a video guide that showed me how to do it from the side...
  13. 4th Generation Optima (2016 - 2020)
    I have a light out over the rear passenger door of my car. (Only 3k miles. I'm HOPING it's just a bulb) I've previous had LED lights in the interior of other vehicles and I don't like the brightness. Does anyone know a part # for the OEM bulbs in the SXLs?
  14. 4th Generation Optima (2016 - 2020)
    Received my LED kit from K5 OS today. Installed the reverse, license, rear dome light, glove box. Having trouble with the map dome. Been researching I am not finding anything on it. The manual states to bring it to a KIA dealer. Anyone with any experience removing the lens for a 16 SX no...
  15. The Service Center
    My left low beam headlight isn't working on my 2013 Optima EX. I bought a replacement bulb, removed that back cover, but was unable to get the actual bulb housing to come out. I gather it also needs a counter-clockwise twist, but I can't get it to budge. The awkward angle doesn't help much...
  16. 4th Generation Optima (2016 - 2020)
    I am thinking of upgrading the stock HID bulb to get a whiter output but I noticed the owner's manual warns against replacing it. It says to have the KIA dealer do it. I see that the bulb replacement doesn't look as easy, but has anyone replaced it on their own? Also, any warranty-void issues...
  17. K5OS - 2016-2020 Kia Optima Products
    Is here to introduce to the 2016-2020 Optima community, the: OSRAM XENARC 66340 CBI D3S HID Bulbs (BUY NOW) Description: Replace your stock HID bulbs with a pair of these high quality Osram D3S bulbs & brighten up the road These OSRAM bulbs offer more lumens than the once industry-standard...
  18. K5OS - 2016-2020 Kia Optima Products
    Is here to introduce to the 2016-2020 Optima community, the: Morimoto XB D3S HID Bulbs (BUY NOW) Description: Replace your stock HID bulbs with a pair of these high quality Morimoto D3S bulbs Easily change out the boring yellowish headlight bulb color you have now These are a direct...
  19. DIY Projects
    Is there a fix for after market high beam bulb on 2013, that's 5000 kelvin?
  20. Interior and Exterior Modifications
    I'm dead set on ordering the dual projectors from K5OS. I understand that the new lens provide a better, clearer line of sight than the OEM US spec headlights. I have a '15 SXL so it would be the HID set up. My question is, has anyone upgraded the stock D1S bulbs that ships with the dual...
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