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Tundra headache

Discussion in '1st Gen Tundras (2000-2006)' started by Doorjam, Sep 1, 2025 at 3:44 PM.

  1. Sep 1, 2025 at 3:44 PM
    #1
    Doorjam

    #1
    Doorjam [OP] New Member

    Joined:
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    The alternator went out on my 2006 Doublecab SR5, 2wd. Put a new one in and a new battery. Now the ABS light is on. The brake light is on. Windows won't work, including the back full window. Door locks do work. The speedometer doesn't work. I've checked fuses. Still scratching my head as to what it could be. Any help getting pointed in the right direction is greatly appreciated.
     
    Doorjam, Sep 1, 2025 at 3:44 PM
    #1
  2. Sep 1, 2025 at 4:12 PM
    #2
    shifty`

    #2
    shifty` Earth acid cleanses me, cleanses me clean

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    31,487
    Gender:
    Male
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    You checked both the fuses in the dash AND the fuses inside the engine bay? Because it sounds like one of the fuses in the engine bay is blown based on the circuits that are out. Inspect all of them, including the square fuses.
     
    shifty`, Sep 1, 2025 at 4:12 PM
    #2
  3. Sep 1, 2025 at 4:26 PM
    #3
    KNABORES

    #3
    KNABORES Sarcasm incoming

    Joined:
    Jan 1, 2020
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    Arkansas
    Vehicle:
    2000 Limited TRD AC 4X4 Thunder Grey 278k miles. *SOLD* 2019 Limited TRD CM 4x4
    Bilstein 5100's on the forbidden notch Husky HD rear leafs 16x8 Eagle Alloy 187's with 285/75/16 MagnaFlow 3" flow through Pioneer touchscreen with backup camera Full interior and dash LED conversion Trailer brake controller with 7 pin Bedliner coat bumpers & trim ARE Mpulse topper - Rhino Vortex rack
    Probably that big 120amp fuse is blown
     
    KNABORES, Sep 1, 2025 at 4:26 PM
    #3
    shifty` likes this.
  4. Sep 1, 2025 at 5:37 PM
    #4
    Aerindel

    #4
    Aerindel New Member

    Joined:
    Jan 31, 2019
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    Montana
    Vehicle:
    2000 Tundra AC, SR5, 4.7 V8 4WD, 325,00ish miles.
    Sounds like a bad ground to me.
     
    Aerindel, Sep 1, 2025 at 5:37 PM
    #4
    ZappBrannigan and ATBAV8 like this.
  5. Sep 1, 2025 at 7:11 PM
    #5
    ZappBrannigan

    #5
    ZappBrannigan The mind is willing but the flesh is weak

    Joined:
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    Canada, by way of Hawaii
    Vehicle:
    2018 1794 MGM
    NVS light bar
    Check those grounds.
     
    ZappBrannigan, Sep 1, 2025 at 7:11 PM
    #5
  6. Sep 2, 2025 at 12:16 PM
    #6
    Doorjam

    #6
    Doorjam [OP] New Member

    Joined:
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    #140148
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    Replaced both of the square fuses and checked under the dash and in the engine bay. I'll start checking grounds next opportunity I get to work on it. Thank you all for your input
     
    Doorjam, Sep 2, 2025 at 12:16 PM
    #6
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