1. Welcome to 4Runners.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Dim Headlights

Discussion in '5th Gen 4Runners (2010-2024)' started by PD Dillon, Dec 30, 2023.

  1. Dec 30, 2023 at 7:42 AM
    #1
    PD Dillon

    PD Dillon [OP] New Member

    Joined:
    Jan 17, 2023
    Member:
    #30712
    Messages:
    7
    Gender:
    Male
    First Name:
    PD
    Hello all - My headlights are incredibly dim, and after checking fuse box, it appears that I am missing a fuse. What are your thoughts? LMK / thx

    IMG_3419.jpg IMG_0030.jpg
     
  2. Dec 30, 2023 at 8:24 AM
    #2
    Borracho Loco

    Borracho Loco My 4Runner identifies as a Prius!

    Joined:
    Sep 23, 2023
    Member:
    #35824
    Messages:
    1,332
    Gender:
    Male
    Dallas/Ft Worth
    Vehicle:
    2023 40th Anniversary Special Edition
    Oooh look, another mod.....

    Someone correct me if I'm wrong (I usually am), but if you're missing a fuse, then the lights wouldn't work at all. If you're missing a fuse or a blew a fuse, the lights wouldn't go dim.

    These are the reasons a headlight would start to go dim:

    https://www.chapelhilltire.com/why-are-my-headlights-dim-5-problems-and-solutions/

    Your issue is probably #1 on that list. The bulb is going out.
     
    icebear likes this.
  3. Dec 30, 2023 at 8:29 AM
    #3
    catbrown357

    catbrown357 New Member

    Joined:
    Dec 19, 2023
    Member:
    #37386
    Messages:
    367
    Gender:
    Male
    Tempe
    Vehicle:
    2011 Limited 4WD
    Yeah, I would say you're missing a 10A fuse. But, I believe that the fuse missing is on the high beam circuit. Are you running around with just the high beams on? If so, you will be pushing light further down the road, and with only one functioning, it's going to appear dim. Either way, replace the fuse first. See if that corrects your problem.
     
  4. Dec 30, 2023 at 8:30 AM
    #4
    Too Stroked

    Too Stroked New Member

    Joined:
    Sep 16, 2021
    Member:
    #23370
    Messages:
    429
    Gender:
    Male
    First Name:
    Tom
    South shore of Lake Ontario
    Vehicle:
    2021 SR5 Premium
    You beat me to it. A blown or missing fuse will not lead to dim headlights. It will lead to no headlights.

    I'd vote for a bad ground, a connection going bad or a bulb going bad.
     
    icebear likes this.
  5. Dec 30, 2023 at 9:51 AM
    #5
    bassist

    bassist New Member

    Joined:
    Aug 15, 2023
    Member:
    #34926
    Messages:
    903
    Gender:
    Male
    Vehicle:
    2023 TRD Offroad Premium
    It doesn’t look like your fuses actually match the diagram.

    Look at the next row over to see what I mean.
     
  6. Dec 30, 2023 at 9:59 AM
    #6
    Borracho Loco

    Borracho Loco My 4Runner identifies as a Prius!

    Joined:
    Sep 23, 2023
    Member:
    #35824
    Messages:
    1,332
    Gender:
    Male
    Dallas/Ft Worth
    Vehicle:
    2023 40th Anniversary Special Edition
    Oooh look, another mod.....

    I was confused at first also, but then I put both pictures side by side, and they do line up. You'll note the "140A" on the left picture and how it lines up with the right picture.

    Screenshot 2023-12-30 11.58.16.png
     
  7. Dec 30, 2023 at 11:09 AM
    #7
    gomiami

    gomiami I Bought a Luxury Station Wagon

    Joined:
    Jul 22, 2023
    Member:
    #34287
    Messages:
    1,213
    Gender:
    Male
    First Name:
    Jay
    SE of Kansas City
    Vehicle:
    2023 Lexus GX460 Nightfall Mica
    Got a "Not Legal in California" patch.
    You have a spare 10a just sitting there. Plug it in.
     
  8. Dec 30, 2023 at 12:02 PM
    #8
    icebear

    icebear Recovering Kia Owner

    Joined:
    Oct 10, 2023
    Member:
    #36091
    Messages:
    397
    Vehicle:
    2021 Toyota 4Runner SR5
    Just in case you haven’t, also check whether they’re aimed right. Last time I got a lift installed (different car) I asked that the headlights be adjusted accordingly and the shop just aimed them down as far as they would go so I had to do it myself anyway.
     
  9. Dec 30, 2023 at 4:13 PM
    #9
    Kezin

    Kezin New Member

    Joined:
    Sep 5, 2022
    Member:
    #28498
    Messages:
    392
    Gender:
    Male
    Houston
    Vehicle:
    ‘21 and ‘17 Limiteds
    Turn your headlights on, walk in front of the vehicle, look at driver’s side headlight. If it’s off, it’s because that’s the fuse you’re missing in the pictures. If it’s on, you have some messed up wiring
     
  10. Dec 30, 2023 at 8:09 PM
    #10
    bassist

    bassist New Member

    Joined:
    Aug 15, 2023
    Member:
    #34926
    Messages:
    903
    Gender:
    Male
    Vehicle:
    2023 TRD Offroad Premium
    Except it looks like the 30 amp fuse is missing in the row to the right of the row that everyone is focusing on.
     
  11. Apr 2, 2024 at 9:02 AM
    #11
    exc380

    exc380 New Member

    Joined:
    Apr 2, 2024
    Member:
    #39541
    Messages:
    1
    Gender:
    Male
    Dim headlight Do this first. It took me a while to figure out why my headlights were so dim, many suggest new bulbs... Go to the inner fenders and grind the ground contacts and where it contacts on BOTH sides. Each headlight assembly has a ground connection. Use dielectric grease to keep corrosion away.
     
    steelevo likes this.
  12. Apr 2, 2024 at 4:51 PM
    #12
    steelevo

    steelevo Not so new anymore...

    Joined:
    Nov 29, 2022
    Member:
    #29845
    Messages:
    2,070
    Utah
    Vehicle:
    2023 4Runner TRD Pro Solar Octane
    This.

    Dim halogen headlights are usually caused by a faulty ground wire.
     

Products Discussed in

To Top