IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Check Headlight System After Replacing Headlights

Thread Tools
 
Search this Thread
 
Old Oct 26, 2024 | 05:07 AM
  #1  
1segovia's Avatar
1segovia
Thread Starter
8th Gear
5 Year Member
 
Joined: Oct 2016
Posts: 8
Likes: 0
From: Wi
Default Check Headlight System After Replacing Headlights

Hello,
I recently replaced my headlights on my 2014 Lexus is250 and the ‘check headlight system’ light came up on my dash. Everything works fine so I contacted the eBay seller who sold the lights. They said that the Lexus computer will not recognize the after market lights so I will need to go to a repair shop and have them eliminate the code. WTH?! I called the dealership and they said they said they don’t deal with aftermarket stuff but I should take it in and they would diagnose it. Not looking to fork over more money on this. Anyways, I know the previous generations had an AFS fuse that could be removed but I didn’t see anything with the2014. If you happen to have any advice on a solution to rid this warning light would be greatly appreciated.
Reply
Old Oct 26, 2024 | 10:33 AM
  #2  
kj07xk's Avatar
kj07xk
Instructor
10 Year Member
Photoriffic
Liked
Loved
 
Joined: Jan 2016
Posts: 1,189
Likes: 413
From: IL
Default

Let me guess, new headlights are LED and the originals were HID?
Reply
Old Oct 26, 2024 | 11:51 AM
  #3  
1segovia's Avatar
1segovia
Thread Starter
8th Gear
5 Year Member
 
Joined: Oct 2016
Posts: 8
Likes: 0
From: Wi
Default

Originally Posted by kj07xk
Let me guess, new headlights are LED and the originals were HID?

The new headlights are LED but I’m not sure what the original ones are. I just bought the car and the headlights that came with it are original from the base OEM package . Not sure if the base uses HID. Thank you for the reply.
Reply
Old Oct 26, 2024 | 03:30 PM
  #4  
kj07xk's Avatar
kj07xk
Instructor
10 Year Member
Photoriffic
Liked
Loved
 
Joined: Jan 2016
Posts: 1,189
Likes: 413
From: IL
Default

The load presented by the aftermarket headlights doesn’t match the expected load, so you get the warning message.
These issues are usually resolved by adding resistors and/or relays. Took both to resolve issues with the LED taillights I added to my other car.
Reply
Old Oct 26, 2024 | 10:31 PM
  #5  
1segovia's Avatar
1segovia
Thread Starter
8th Gear
5 Year Member
 
Joined: Oct 2016
Posts: 8
Likes: 0
From: Wi
Default

Originally Posted by kj07xk
The load presented by the aftermarket headlights doesn’t match the expected load, so you get the warning message.
These issues are usually resolved by adding resistors and/or relays. Took both to resolve issues with the LED taillights I added to my other car.
Thank you so much. I will look into these possibilities and see if I can get this resolved. I know it is just a warning light but annoys the bleep outta me.
Reply
Old Oct 27, 2024 | 12:17 PM
  #6  
1segovia's Avatar
1segovia
Thread Starter
8th Gear
5 Year Member
 
Joined: Oct 2016
Posts: 8
Likes: 0
From: Wi
Default

Originally Posted by kj07xk
The load presented by the aftermarket headlights doesn’t match the expected load, so you get the warning message.
These issues are usually resolved by adding resistors and/or relays. Took both to resolve issues with the LED taillights I added to my other car.
come to think of it, the new headlights did not come with turn signal bulbs for what ever reason. So I took the oem turn signal bulbs from the other headlights and used them in the new ones. Do you think I should buy led turn signals to possibly rid the warning light or not bother?
Reply
Old Oct 27, 2024 | 02:44 PM
  #7  
kj07xk's Avatar
kj07xk
Instructor
10 Year Member
Photoriffic
Liked
Loved
 
Joined: Jan 2016
Posts: 1,189
Likes: 413
From: IL
Default

Originally Posted by 1segovia
come to think of it, the new headlights did not come with turn signal bulbs for what ever reason. So I took the oem turn signal bulbs from the other headlights and used them in the new ones. Do you think I should buy led turn signals to possibly rid the warning light or not bother?
In another thread you said everything is fine until you turn on the lights. So does that mean no warning in the daytime when using the turn signals? If so, I wouldn’t worry about the turn signal bulbs. Headlights and turn signals are on different circuits.
Reply
Old Oct 27, 2024 | 02:58 PM
  #8  
1segovia's Avatar
1segovia
Thread Starter
8th Gear
5 Year Member
 
Joined: Oct 2016
Posts: 8
Likes: 0
From: Wi
Default

Originally Posted by kj07xk
In another thread you said everything is fine until you turn on the lights. So does that mean no warning in the daytime when using the turn signals? If so, I wouldn’t worry about the turn signal bulbs. Headlights and turn signals are on different circuits.
oh duh, that makes sense. Yes, it only comes on when I turn the headlights on. Not daylight blinker usage. Thank you for the info.
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

10 Lexus Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-1

8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

 Michael S. Palmer
story-2

10 Best Lexus Models No One Remembers

 Joe Kucinski
story-3

TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

 Michael S. Palmer
story-4

Top 10 Lexus & Toyotas to Drive Before You Die!

 Joe Kucinski
story-5

Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

 Joe Kucinski
story-6

Lexus LC500 Convertible Auction: A Preview of Rising Values?

 Brett Foote
story-7

GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

 Michael S. Palmer
story-8

9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

 Joe Kucinski
story-9

2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

 Brett Foote
Old Sep 20, 2025 | 07:08 PM
  #9  
Gage20's Avatar
Gage20
1st Gear
 
Joined: Sep 2025
Posts: 1
Likes: 0
Default Resolved?

Originally Posted by 1segovia
Hello,
I recently replaced my headlights on my 2014 Lexus is250 and the ‘check headlight system’ light came up on my dash. Everything works fine so I contacted the eBay seller who sold the lights. They said that the Lexus computer will not recognize the after market lights so I will need to go to a repair shop and have them eliminate the code. WTH?! I called the dealership and they said they said they don’t deal with aftermarket stuff but I should take it in and they would diagnose it. Not looking to fork over more money on this. Anyways, I know the previous generations had an AFS fuse that could be removed but I didn’t see anything with the2014. If you happen to have any advice on a solution to rid this warning light would be greatly appreciated.
Were you able to remove the warning? I just installed aftermarket lights and the same thing happened on my 2014.
Reply
Old Sep 20, 2025 | 08:13 PM
  #10  
1segovia's Avatar
1segovia
Thread Starter
8th Gear
5 Year Member
 
Joined: Oct 2016
Posts: 8
Likes: 0
From: Wi
Default

Originally Posted by Gage20
Were you able to remove the warning? I just installed aftermarket lights and the same thing happened on my 2014.
No, I just live with it. Still worth installing them since my car looks new now.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GS350LuxuryFsport
RX - 3rd Gen (2010-2015)
3
May 22, 2024 10:15 AM
ameer90
IS - 2nd Gen (2006-2013)
0
Dec 14, 2022 08:10 AM
MM97
IS - 3rd Gen (2014-present)
0
Nov 14, 2022 11:50 PM
Aliabdo45
RC F (2015-present)
1
Jun 3, 2022 09:09 AM
pvvdds
RX - 2nd Gen (2004-2009)
2
Nov 28, 2019 03:20 AM




All times are GMT -7. The time now is 07:55 AM.

story-0
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE
story-1
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-2
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-3
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-4
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE
story-5
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

Slideshow: Top 10 Lexus/Toyota models with the lowest 5-year depreciation rate.

By Joe Kucinski | 2026-04-08 12:19:06


VIEW MORE
story-6
Lexus LC500 Convertible Auction: A Preview of Rising Values?

The LC hasn't even disappeared from the Lexus lineup yet, and we're already seeing signs of an explosive market.

By Brett Foote | 2026-04-06 09:25:02


VIEW MORE
story-7
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

Slideshow: comparing the pricings, specs, power, fuel economy, fun-factor, and features of the GX 550 Luxury+ and TX 550h+ Luxury.

By Michael S. Palmer | 2026-03-19 13:44:11


VIEW MORE
story-8
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

Slideshow: 9 best Lexus models you can buy for half price and 1 you should avoid

By Joe Kucinski | 2026-03-19 12:01:07


VIEW MORE
story-9
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

Here's everything you need to know about the latest NX.

By Brett Foote | 2026-03-19 11:56:59


VIEW MORE